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Bruxism is a repetitive jaw-muscle activity characterized by the clenching or grinding of teeth and/or the bracing or thrusting of the mandible.This study assessed parents/guardians' knowledge of nocturnal bruxism in children/adolescents.A cross-sectional study using a validated questionnaire was carried out on 134 Brazilian guardians. Data were analyzed descriptively and through the chi-square test to assess the association if guardians reported bruxism and the causes and consequences of nocturnal bruxism.Mothers (68.7%) were the main contributors; 23.1% said their child had bruxism. Although most participants (73.9%) had no opinion, some believe bruxism is linked to emotional stress (13.4%), mysticism/religiosity (3.7%), health (3.7%) or dental problems (3.0%), and presence of parasites (2.2%). Among the parents/guardians of children without bruxism, 81.9% were unaware of some possible cause versus 18.1% of those with bruxism (p=0.011). There was no association between children with bruxism and the type of sleep (p=0.191) or sleep duration (p=0.377). The majority (90.3%) of guardians whose children have bruxism believe the condition affects their health (p=0.006).Guardians have a widespread ignorance about the causes and consequences of sleep bruxism.

Objectives: A cross-sectional study was performed to assess the association between possible sleep bruxism (SB) and awake bruxism (AB) with sleep characteristics and chronotype (i.e. circadian cycle preference). Methods: One-hundred-nineteen young adults filled out a self-reported questionnaire to assess SB and AB, a questionnaire about daily life aspects, as well as the Morningness-Eveningness Questionnaire (MEQ) to profile chronotype. Results: The frequency of self-reported SB and AB was 25.2% and 37.0%, respectively. Both SB and AB were significantly more frequent in females than males. Most participants had an intermediate chronotype profile (n = 85; 71.4%). Neither SB (p = 0.556) nor AB (p = 0.334) were associated with chronotype. Nightmares were more prevalent among individuals with possible SB (38.3%). Difficulty concentrating in daily activities was more frequently reported among individuals with AB (51.9%). Conclusion: There was no association between possible SB and AB or the chronotype profiles among Italian dental students.

Objective: Identify factors associated with the prevalence of reported bruxism in children/adolescents with Down Syndrome (DS). Methods: The study included 112 children/adolescents with DS and thei...

Sleep bruxism (SB) is a masticatory muscle activity that affects children. Parents' knowledge is important for its identification and report to dentists.To investigate parents' knowledge about SB among their children.A cross-sectional study included 1325 parents of children from dental clinics of seven institutions from all regions of Brazil. Parents answered questions about child's sleep, knowledge about SB and its occurrence among children and parents. SB definition given by parents was dichotomized as "correct"/"incorrect", based on the American Academy of Sleep Medicine definition. Descriptive, bivariate and multivariate analyses were performed (P 0.05).Most parents (57.3%) did not know what SB is and 88.9% would like to receive more information. SB prevalence among parents was 15.4% and 24.0% among children. Between parents who correctly defined SB, its prevalence increased to 27.5% among parents and 40.6% among children. Parents whose children had/have SB, who would like to receive more information about SB and were from the North, Central-West, Southeast, and South regions were more likely to define SB correctly (P 0.05).There is a lack of knowledge of parents about SB. SB among children, parents' interest in receiving more information and their location were factors associated to their knowledge.

To investigate the prevalence of probable sleep bruxism (SB) in the primary and mixed dentitions using non-instrumental approach and evaluate whether sleep quality is associate with probable SB in different age ranges. School-based cross-sectional study with children aged 2–5 (primary dentition, n = 372) and 8–10 years old (mixed dentition, n = 563) enrolled in public schools at Florianopolis and their parents. The sleep characteristics, socioeconomic status, and presence of probable SB were assessed using questionnaires. Seven trained examiners (Kappa > 0.7) assessed tooth wear. Children were selected following a stratified sample (2–5); and a system of the proportionality, first the schools of the sanitary districts and after the classrooms (8–10). Unadjusted and adjusted Poisson regression was performed with probable SB as a dependent variable. Independent variables were as follows: family income, parent schooling, drooling, tooth wear, and sleep quality. The independent variables presenting p value ≤ 0.20 were included in the adjusted model. The prevalence of probable SB was 22.3% in primary and 32.7% in mixed dentition. Probable SB was significantly associated with poor sleep quality (p

Study Objectives:To evaluate the prevalence of probable sleep bruxism (SB) and its association with sleep features, orthodontic fixed appliance wearing, and extraoral and intraoral clinical signs a...

Article Title and Bibliographic Information Prosthodontic planning in patients with temporomandibular disorders and/or bruxism: A systematic review. Manfredini D, Poggio CE. J Prosthet Dent. 2017;117(5):606-13. Source of Funding Information not available. Type of Study/Design Review.

The immaturity of born to preterm infants may predispose to sucking difficulties. This research aimed to evaluate if pacifier use is associated with preterm birth and influenced in type of infant feeding. This comparative cross-sectional study was conducted in Belo Horizonte, Brazil and evaluated 250 children aged 3 to 5 years. As a sample, two groups were established: the normal term children group (n=125) was selected at a day-care centre and the group of preterm children (125) was identified at a public university hospital with a preterm care project from birth to seven years of age. To collect data, a pre-tested questionnaire regarding information on gestational age, infant development, infant feeding and non-nutritive sucking habits was used for both groups. Bivariate and multivariate Poisson regression was used for the statistical analysis. Pacifier use was more prevalent in the preterm group (PR=1.20, 95% CI=1.02-1.42) who used the bottle (PR=1.38, 95% CI=1.15-1.64) and were breastfed for less than six months (PR=1.19, 95% CI=1.01-1.41). The majority of breastfed infants were of normal term birth (PR=1.14, 95% CI=1.04-1.20) and had monthly family income greater than USD 450.28 (RP= 1.10, 95% CI=1.01-1.20). In this study, pacifier use was more prevalent among preterm infants and associated with less than six months of breastfeeding and used of bottle. Monthly family income was associated with a prevalence of breastfeeding.

BACKGROUND Dental caries (DC) remains a public health issue. Chronotype, diet, and oral hygiene may influence its development. OBJECTIVE To investigate the association of chronotype, diet, oral hygiene, and DC among 12-year-olds. METHODS A cross-sectional study with 245 adolescents was conducted in public and private schools in southeast Brazil. Sociodemographics, dietary and oral hygiene habits were collected through a self-reported questionnaire. Chronotype was assessed using the Portuguese version of the Puberty and Phase Preference Scale (PPPS). Subjects were examined for DC (WHO criteria). Bivariate and multivariate analyses were performed (P

Objective: The aim of this study was to evaluate the prevalence of self-reported awake and sleep bruxism among Brazilian dental students. Methodology: A cross-sectional study was carried 153 students of a Brazilian Dental School. The students, who accepted to participate, answered a questionnaire with open-ended and closed-ended questions, through which the following information was collected: gender, age, place of living, paid work (extracurricular activities), nocturnal paid work, number of hours of sleep per night, time to fall asleep, quality of sleep, if the participant sleeps with a bedroom partner, if participant is not quiet on bed while sleeping and intake of sleep medication. Information on intake of energy drink, if participant wake up overnight, if participant wake up tired and it has been difficult to concentrate on daily activities was also collected. The diagnosis of awake bruxism and sleep bruxism was based on self-report. Descriptive analysis was carried out. Results: Participants' mean age was 21 years (±3.25). Most students were female (73%). The prevalence of self-reported awake bruxism was 36.8% and sleep bruxism was 11.3%. Most participants rated their sleep quality as good (57.2%). However, 52.6% reported that they woke up feeling tired and 51.3% had difficulty of concentration on daily activities. The use of sleeping pills was reported by 5.9%, and 10.5% reported that they had used energy drinks and/or pills to stay awake at least once within the last 30 days. Conclusion: The prevalence of self-reported awake bruxism was greater than sleep bruxism among Brazilian dental students. Objetivo: Avaliar a prevalência de bruxismo em vigília e do sono auto-relatados por estudantes de odontologia brasileiros. Metodologia: Foi realizado um estudo transversal com 153 estudantes de uma Faculdade de Odontologia brasileira. Os alunos que aceitaram participar responderam a um questionário com perguntas abertas e fechadas, avaliando: gênero, idade, endereço, realização de trabalho remunerado (atividades extracurriculares) e/ou trabalho noturno remunerado, horas de sono por noite, tempo para adormecer, qualidade do sono, se o participante dorme com um colega de quarto e se o participante tem sono agitado. Também foram coletadas informações sobre a ingestão de bebida energética e pílulas para dormir, se o participante acordava durante a noite, se acordava cansado e tinha dificuldades de concentração nas atividades diárias. O diagnóstico de bruxismo em vigília e do sono baseou-se em auto-relato. Foi realizada a análise descritiva dos dados. Resultados: A média de idade dos participantes foi de 21 anos (±3,25) e 73% eram do sexo feminino. A prevalência do bruxismo em vigília foi de 36,8% e do bruxismo do sono foi de 11,3%. A maioria dos participantes, 57,2%, classificou a qualidade do sono como boa. No entanto, 52,6% relataram que acordavam cansados e 51,3% tiveram dificuldade de concentração nas atividades diárias. 5.9% relataram o uso de pílulas para dormir e 10,5% relataram consumo de bebidas energéticas e/ou pílulas para ficarem acordados pelo menos uma vez nos últimos 30 dias. Conclusão: A prevalência do bruxismo em vigília auto-relatado foi maior do que o bruxismo do sono entre estudantes de odontologia brasileiros.

Background Bullying is a common occurrence in adolescence that may damage the physical and emotional health. Objective The purpose of the present cross-sectional study was to analyze the profile of the adolescent aggressor only, aggressor/victim, victim only, and those not involved in verbal school bullying, and to associate their profiles with life satisfaction and familial characteristics evaluated through socioeconomic status. Subjects and methods A cross-sectional study was carried out with 366 Brazilian adolescents between 13 and 15 years. Verbal school bullying was identified using the Brazilian National School-Based Adolescent Health Survey (PeNSE) questionnaire. The life satisfaction of the adolescents was assessed using the Multidimensional Life Satisfaction Scale for Adolescents (MLSSA). Statistical analyses involved the chi-square test, Fisher's exact test and the Poisson regression with robust variance. Results Sixty-six adolescents (18%) were aggressors, 5.5% were victims, 2.7% were both aggressor and victim, and 73.8% were not involved in verbal school bullying. Most aggressors were male (PR = 1.97, 95% CI: 1.23–3.14) and were satisfied with their family life (PR = 2.13, 95% CI: 1.18–3.8). Victims of verbal school bullying exhibited a low prevalence of non-violence (PR = 0.24, 95% CI: 0.09–0.64). Those who were both aggressors and victims were associated with factors of family support (PR = 0.25, 95% CI: 0.07–0.89) and self-efficacy (PR = 6.29, 95% CI: 1.54–25.6). Most of the adolescents who were not involved in verbal school bullying were female (PR = 1.32, 95% CI: 1.16–1.51). Conclusions Boys tend to be aggressors and girls tend not to get involved in verbal school bullying. Family satisfaction, self-esteem, self-efficacy, and levels of violence are important factors that can influence the profile of adolescents in relation to verbal school bullying.

Bruxism is a common phenomenon, and emerging evidence suggests that biologic, psychologic, and exogenous factors have greater involvement than morphologic factors in its etiology. Diagnosis should adopt the grading system of possible, probable, and definite. In children, it could be a warning sign of certain psychologic disorders. The proposed mechanism for the bruxism-pain relationship at the individual level is that stress sensitivity and anxious personality traits may be responsible for bruxism activities that may lead to temporomandibular pain, which in turn is modulated by psychosocial factors. A multiple-P (plates, pep talk, psychology, pills) approach involving reversible treatments is recommended, and adult prosthodontic management should be based on a common-sense cautionary approach.

Sleep (SB) and awake bruxism (AB) recognize a multifactorial etiology and have a relationship with several psychological factors. Psychological disorders have recently been associated also with the chronotype, which is the propensity for an individual to be especially active at a particular time during a 24-h period. Based on the chronotype, the two extreme profiles are morningness and eveningness individuals. Due to the relationship that both the chronotype and bruxism have with psychological factors and the fact that performing tasks not compatible with chronotype can trigger stress, this review presents the hypothesis that the prevalence of SB and AB can differ with the various chronotype profiles. New perspectives for the study of bruxism etiology may emerge from investigations on the topic.

The aim of this study was to determine the association between verbal school bullying and possible sleep bruxism (SB) in adolescents. A case-control study was carried out at the population level by recruiting 13- to 15-year-old participants among the attendants of schools of Itabira, Brazil. The case group was composed of 103 adolescents with possible SB (i.e. self- or parental-reported), while the control group included 206 adolescents without possible SB. All participants answered a questionnaire on the occurrence of their involvement in verbal school bullying episodes, based on the National School of Health Research (PeNSE) as well as an evaluation of their economic class according to the criteria of the Brazilian Association of Research Companies. Pearson's chi-square, McNemar test and conditional logistic regression were performed to assess the association between possible SB, verbal school bullying and economic class. There were 134 (43·3%) participants who reported involvement in verbal school bullying episodes as a victim, bully or both. The majority of them were males (90·3%). Adolescents with possible SB were more likely to have been involved in episodes of verbal school bullying (OR: 6·20; 95% CI: 3·67-10·48). Based on these findings, it can be suggested that possible SB in young teenagers is associated with a history of episodes of verbal school bullying.

The objective of this study was to analyze the reassuring role of music associated with the personality traits of children during dental care. The study involved a randomized crossover clinical trial with 34 children, aged from 4 to 6 years, who exhibited two carious lesions on the occlusal surfaces of the molars. The children were divided into two groups: (G1) first tooth restoration intervention session with music, second session without music; and (G2) first tooth restoration intervention session without music, second session with music. The first consultation was to perform a clinical examination, and the second and third to perform modified Atraumatic Restorative Treatment (mART). Symphony No. 40 by Mozart was played via headphones. Pulse rate (PR) was measured using a pulse oximeter. The Brazilian version of the Eysenck Personality Questionnaire-Junior (EPQ-J) was used to measure the children’s personality. For statistical analysis, descriptive, Chi-square, and Wilcoxon tests were carried out. The G1 group exhibited a lower PR at the time of the intervention during the second consultation compared to the third consultation (p = 0.012). The G2 group exhibited a lower PR at the time of the intervention during the third consultation compared to the first consultation (p = 0.002). The majority of the children with a low level of extraversion presented with higher PR (p = 0.005). Music could reduce the PR among children during dental intervention. Children with low extraversion showed a tendency towards a higher PR without music during dental care.

Background/Aim: Bruxism is the habitual, involuntary grinding or clenching of the teeth that affects both children and adults. The aim of the present study was to assess the level of knowledge parents/guardians have about the bruxism of their children. Materials and Methods: A cross-sectional epidemiological study was developed for 221 parents/guardians of patients of the pediatric dentist in the Faculty of Dentistry of the Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil. A previously tested questionnaire, based on the criteria of the American Association of Sleep Medicine (AASM), was used to collect data from the participants in the waiting room of the clinics involved. Descriptive analysis was elaborated and the chi-squared test was applied (level of significance of 5%) using statistical software SPSS 17.0. Results: The majority of the participants were mothers of the patients (84.2%). The mean age of the parents/guardians was 36.6 years. The mean age of children was 7.6 years. In total, 76.6% of the mothers, 40.2% of the fathers, and 48% of the children reported having bruxism. The participants believed that bruxism was associated with emotional factors (63.8%) and/or mystical factors (20.4%). The majority reported having sought help from doctors (54.4%), followed by mystics (20.4%) and dentists (19.1%). A statistically significant association was found between bruxism and children with restless sleep (P < 0.001) and in cases where both the parents and children were affected by bruxism (P < 0.001). Conclusion: Families require greater clarification regarding the factors that trigger bruxism.

A cross-sectional study was performed to assess the prevalence of tooth wear facets and sleep disorders.The sample was divided into two groups: Group I: police officers (n = 144), and Group II: industrial workers (n = 142). A self-reported questionnaire, a clinical examination recorded in the dental records, and the Brazilian version of the Pittsburgh Sleep Questionnaire Index were used for data collection. Descriptive analysis, chi-squared and multiple logistic regression were used as statistical tests at a 5% significance level.Group I was almost twice as likely to have tooth wear facets as was Group II (OR = 1.88 95% CI = 1.03-3.44). Sleep disorders were worse among the participants of Group I.The type of profession exerted an influence on sleep disorders and the presence of wear facets among the groups, with police officers most likely to suffer from these disorders.

Background Adolescence is a period with changes and conflicts. Aim The aim of this study was to investigate the association between sleep bruxism, verbal bullying at school, and life satisfaction among Brazilian adolescents. Design A cross-sectional study of 1344 Brazilian adolescents was performed. Possible sleep bruxism was identified using the consensus criteria based on the reports of parents. The parents and the adolescents answered validated questionnaires. The data were statistically analyzed using the chi-squared test, Mann–Whitney U-test, and Poisson regression with robust variance. Results A total of 205 adolescents presented possible sleep bruxism (15.3%). This parafunction was more prevalent among adolescents who were victims of verbal bullying at school (PR: 6.31; 95% CI: 4.78–8.32), victim/perpetrators (PR: 5.27; 95% CI: 3.82–7.27), and who belonged to families from a higher socioeconomic status (RP: 1.51; 95% CI: 1.23–1.86). Possible sleep bruxism was also associated with higher scores in the domains of self (PR: 1.04; 95% CI: 1.00–1.08), school (PR: 1.05; 95% CI: 1.02–1.09) and self-efficacy (PR: 1.07; 95% CI: 1.03–1.12), and lower scores in the non-violence domain (PR: 0.96; 95% CI: 0.93–0.99). Conclusions Possible sleep bruxism can assist in the detection of adolescents involved in school bullying at school in the roles of victim and victim/perpetrator.

The aim of the present study was to evaluate the association between childhood dental experiences and dental fear in adulthood among dentistry, psychology and mathematics undergraduate students. A cross-sectional study of 1,256 students from the city of Belo Horizonte, Brazil, was performed. Students responded to the Brazilian version of the Dental Fear Survey (DFS) and a questionnaire regarding previous dental experiences. Both the DFS and the questionnaire were self-administered. Association was tested using descriptive, bivariate and multivariate linear regression analysis, with a 5% significance level. Dentistry undergraduates reported lower scores than psychology (p < 0.001) and mathematics undergraduates (p < 0.05) for all three dimensions of the DFS. Negative dental experiences in childhood was associated with dimensions of Avoidance (B = 2.70, p < 0.001), Physiological arousal (B = 1.42, p < 0.001) and Fears of specific stimuli/situations (B = 3.44, p < 0.001). The reason for first visit to dentist was associated with dimensions of Physiological arousal (B = 0.76, p < 0.01) and Fears of specific stimuli/situations (B = 1.29, p < 0.01). Dentists should be encouraged to evaluate the dental fear of their patients before treatment. The DFS has been found to be an effective instrument for this purpose.

The aim of the present study was to compare self-reported dental fear among dental students and patients at a School of Dentistry in Belo Horizonte, Brazil. Eighty students ranging in age from 20 to 29 years and 80 patients ranging in age from 18 to 65 years participated in the study. A self-administered pre-tested questionnaire consisting of 13 items was used for data acquisition. The city of Belo Horizonte Social Vulnerability Index (SVI) was employed for socioeconomic classification. The chi-square test and binary and multinomial logistic regression were employed in the statistical analysis, with the significance level set at 0.05. The majority of dental students (76.5%) sought the dentist for the first time for a routine exam, while patients (77.3%) mostly sought a dentist for the treatment of dental pain. Dental fear was more prevalent among the patients (72.5%) than the students (27.5%). A total of 47.1% of the students and 52.9% of the patients reported having had negative dental experiences in childhood. The logistic model revealed an association between dental fear and a pain-related experience (OR: 1.8; 95%CI: 1.3–2.6). Patients were more prone to dental fear (OR: 2.2; 95%CI: 1.0–5.0). Although at different percentages, both students and patients experienced dental fear. Current patient with previous experience of dental pain had more dental fear.

To assess the impact of wearing a fixed orthodontic appliance on oral health-related quality of life (OHRQoL) among Brazilian children.Cross-sectional study.The Department of Paediatric Dentistry and Orthodontics at Federal University of Minas Gerais, Belo Horizonte, Brazil.Sample of 579 children aged 11-14 years. The children were divided into two groups: wearing (n = 160)and not wearing (n = 419)a fixed orthodontic appliance.A clinical examination was performed by a single examiner to determine whether or not a fixed orthodontic appliance was worn,the presence of a malocclusion using the Dental Aesthetic Index (DAI)and cavitated carious lesions. The impact of wearing a fixed orthodontic appliance on OHRQoL was measured using the short form of the Brazilian version of the Child Perceptions Questionnaire (CPQ(11-14)). Data analysis involved descriptive statistics, Mann-Whitney test and univariate/multiple logistic regression.The total CPQ(11-14) score revealed a more frequent impact among children who wore a fixed orthodontic appliance than those who did not (P = 0·002).Similar findings were observed for the FL (P = 0·005),EWB (P = 0·006) and SWB (P = 0·003) subscales.There was no statistically significant difference between the two groups regarding the score on the OS subscale (P = 0·124).While females were 1·76 times more likely to have a worse OHRQoL than males, the use of a fixed orthodontic appliance was also significantly associated with a greater chance (OR = 1·60; CI = 1·11-2·33)of impacting OHRQoL when both variables were inserted together in the regression model.Children wearing a fixed orthodontic appliance had significantly worse OHRQoL compared with a control group with no malocclusion and not wearing a fixed appliance.

AIM: This was to investigate the prevalence of sleep bruxism in Brazilian schoolchildren. METHODS: Across-sectional study was carried out examining 652 randomly selected children aged from 7 to 10 years of age from both public and private schools in Belo Horizonte, Brazil. Sleep bruxism among children was reported by parents by means of a pretested questionnaire based on the criteria of the American Academy of Sleep Disorders. The Social Vulnerability Index from Municipal database was used to determine social classification of families. A chi-square test was used with a significance level of 5%. RESULTS: Sleep bruxism was present in 230 children, showing a prevalence of 35.3%. Among the 652 children, 340 (52.0%) were girls and 312 (48.0%) were boys, predominatly of 8-year-olds (84.2%). Sleep bruxism was present in 56.5% of the girls and 43.5% of the boys. The majority of the families were of a low social vulnerability (54.2%), whereas another 45.8% were of a high social vulnerability. More than half of the children without sleep bruxism (55.2%) were of low socio-economic background. CONCLUSIONS: The high prevalence of 35.3% demonstrates the need for further research on this issue.

The mechanical control of supragingival biofilm is accepted as one of the most important measures to treat and prevent dental caries and periodontal diseases. Nevertheless, maintaining dental surfaces biofilm-free is not an easy task. In this regard, chemical agents, mainly in the form of mouthwashes, have been studied to help overcome the difficulties involved in the mechanical control of biofilm. The aim of this paper was to discuss proposals for the teaching of supragingival chemical control (SCC) in order to improve dentists' knowledge regarding this clinical issue. Firstly, the literature regarding the efficacy of antiseptics is presented, clearly showing that chemical agents are clinically effective in the reduction of biofilm and gingival inflammation when used as adjuvant agents to mechanical control. Thus, it is suggested that the content related to SCC be included in the curricular grid of dental schools. Secondly, some essential topics are recommended to be included in the teaching of SCC as follows: skills and competencies expected of a graduate dentist regarding SCC; how to include this content in the curricular grid; teaching-learning tools and techniques to be employed; and program content.

Background. Bruxism is described as an orofacial parafunction that affects both children and adults. The maintenance of the childhood habit into adulthood may compromise health. As there are few studies on this issue, there is a need for further research on sleep bruxism among children. Aim. The aim of this study was to assess the prevalence of sleep bruxism in children and the influence of psychosocial factors. Methods. A cross-sectional study was carried out on 652 randomly selected children aged 7–10 years at public and private schools in Belo Horizonte, Brazil. The instruments used were: questionnaire for parents, Child Stress Scale, and the scales on neuroticism and responsibility from the prevalidated Big Five Questionnaire for Children. Psychological tests were administered and evaluated by psychologists. Sleep bruxism among children was reported by parents. The Social Vulnerability Index from the city hall database was used to determine the social classification of the families. The chi-squared test, binary and multivariate logistic regressions were used, with the significance level set at 5%. Results. A 35.3% prevalence of bruxism was found. No association was found between bruxism and stress, gender, age, or social vulnerability. The adjusted logistic model determined that children with high levels of neuroticism (OR = 1.9, CI 1.3–2.6) and responsibility (OR = 2.2, CI 1.0–5.0) are twice as likely to have the habit of sleep bruxism when compared to those who have low levels of these personality traits. Conclusions. A high degree of responsibility and neuroticism, which are individual personality traits, are determinant factors for the development of sleep bruxism among children.

Objective: The aim of this study was to evaluate the association between sleep bruxism and orthodontic treatment in children and adolescents. Methods: Analysis was performed both before and during such treatment. A retrospective cross-sectional study was undertaken in two groups of seven to 15-year-old patients from the orthodontic clinic of a public university in Belo Horizonte, Brazil. The first group contained 22 patients with a mean age of ten years (SD = 2.058) who were awaiting orthodontic treatment. The second group contained 44 patients with a mean age of nine years (SD = 1.79) undergoing orthodontic treatment. Data collection was performed using a questionnaire completed by parents/caregivers and data from the medical records of the clinic. Diagnosis of bruxism was determined in accordance with American Academy of Sleep Medicine criteria. Descriptive analysis and Chi-square test were used for statistical analysis. Results: Sleep bruxism was observed in 27.3% of patients who were awaiting orthodontic treatment. Regarding the group undergoing treatment, 36.4% had sleep bruxism prior to the start of treatment and 25% continued to suffer from the Para function following placement of an orthodontic appliance. Among those who had sleep bruxism before treatment, 75% reported that the Para function ceased after placement of the appliance. There was an association between the presence of sleep bruxism among parents/ caregivers and among patients (p = 0.035). Interceptive orthodontics was associated in 77% of sleep bruxism stop during treatment (p = 0.029). The corrective orthodontics was in 22.8% patients with sleep bruxism only after fitting orthodontic appliance compared to 9% with interceptive orthodontic treatment (p = 0.002). Conclusion: There was an association between sleep bruxism in parents/caregivers and the presence of the Para function among children/adolescents. The type of orthodontic treatment influenced the time that sleep bruxism appeared. The interceptive orthodontic treatment was associated with the cases which sleep bruxism stopped during treatment.

Objective: To investigate the impact of wearing a fixed orthodontic appliance on oral health-related quality of life (OHRQoL) among adolescents. Materials and Methods: A case-control study (1∶2) was carried out with a population-based randomized sample of 327 adolescents aged 11 to 14 years enrolled at public and private schools in the City of Brumadinho, southeast of Brazil. The case group (n = 109) was made up of adolescents with a high negative impact on OHRQoL, and the control group (n = 218) was made up of adolescents with a low negative impact. The outcome variable was the impact on OHRQoL measured by the Brazilian version of the Child Perceptions Questionnaire (CPQ11–14) – Impact Short Form (ISF:16). The main independent variable was wearing fixed orthodontic appliances. Malocclusion and the type of school were identified as possible confounding variables. Bivariate and multiple conditional logistic regressions were employed in the statistical analysis. Results: A multiple conditional logistic regression model demonstrated that adolescents wearing fixed orthodontic appliances had a 4.88-fold greater chance of presenting high negative impact on OHRQoL (95% CI: 2.93–8.13; P < .001) than those who did not wear fixed orthodontic appliances. A bivariate conditional logistic regression demonstrated that malocclusion was significantly associated with OHRQoL (P = .017), whereas no statistically significant association was found between the type of school and OHRQoL (P = .108). Conclusions: Adolescents who wore fixed orthodontic appliances had a greater chance of reporting a negative impact on OHRQoL than those who did not wear such appliances.

Aim: This was to evaluate the potential factors that influence behaviour in the paediatric dentistry environment of children aged 48 to 68 months who have never before been to a dentist. Study Design. Cross sectional. Methods: Child behaviour was evaluated using the Frankl scale during both clinical examination procedures and prophylaxis. All mothers of the 118 children investigated underwent a test to assess their anxiety (Manifest Anxiety Scale-MAS) and responded to a questionnaire on the medical history of the child as well as socioeconomic factors. The children were given a test to assess their anxiety (Venham Picture Test-VPT). Statistics: The statistical tests adopted were the Chi-squared test and both simple and multiple unconditional logistic regression. Results: Children with high anxiety, those who had previously experienced toothache and those had behaved uncooperatively during prior medical experiences, had a greater probability of behaving uncooperatively during their first dental consultation. Conclusions: Dental professionals can identify the presence of predictive factors for child behaviour prior to the first clinical examination by including relevant questions in the dental and medical history, thereby facilitating a more positive initial contact between paediatric dentists and their patients.

The aim of the study was to evaluate the association of sleep bruxism, awake bruxism and sleep quality among dental students of the Federal University of Minas Gerais, Belo Horizonte, Brazil. A cross-sectional study was performed including 183 Brazilian dental students aged from 17 to 46 years old. The complete course curriculum consists of 9 semesters. Students enrolled in the first semester, the middle semester and the final semester of the course participated in the survey. The PSQI-BR (the Brazilian version of the Pittsburgh Sleep Questionnaire Index) was used for data collection. The PSQI-BR was distributed during lecture classes. Sleep bruxism and awake bruxism diagnosis was based on self-reported data. Descriptive analysis, Kruskal-Wallis, Mann-Whitney and Poisson regression with robust estimator were the statistical tests used. Sleep bruxism prevalence was 21.5% and awake bruxism prevalence was 36.5%. Sleep duration components were associated with sleep bruxism (PR=1.540; 95% CI: 1.00-2.37) and awake bruxism (PR=1.344; 95% CI: 1,008-1,790). There was an association between awake bruxism and habitual sleep efficiency component (PR=1.323; 95% CI: 1.03-1.70). Sleep disturbance component and awake bruxism were associated (PR=1.533; 95% CI: 1.03-2.27). Poor sleep quality was an important factor among dental students, who reported sleep bruxism as well as among those who presented awake bruxism O objetivo deste estudo foi avaliar a associação entre o bruxismo do sono, bruxismo diurno e qualidade do sono entre estudantes de odontologia da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil. Um estudo transversal foi desenvolvido com 183 estudantes de odontologia brasileiros com idade entre 17 e 46 anos. O curriculum completo do curso consiste de 9 semestres. Estudantes matriculados no primeiro semestre, no semestre do meio e no último semestre do curso participaram do estudo. O PSQI-BR (versão brasileira do Pittsburgh Sleep Questionnaire Index) foi utilizado para a coleta dos dados. O PSQI-BR foi distribuído em sala de aula. O diagnóstico de bruxismo do sono e bruxismo diurno foi baseado em auto-relato dos estudantes. Análise descritiva, Kruskal-Wallis, Mann-Whitney e regressão de Poisson com estimativa robusta foram os testes estatísticos utilizados. A prevalência do bruxismo do sono foi de 21,5% e a prevalência do bruxismo diurno foi de 36,5%. O componente duração do sono apresentou associação com bruxismo do sono (PR=1,540; 95%IC: 1,00-2,37) e com bruxismo diurno (PR=1,344; 95%CI: 1,008-1,790). Houve associação entre bruxismo diurno e o componente eficiência habitual do sono (PR=1,323; 95%IC: 1,03-1,70). O componente distúrbio do sono e o bruxismo diurno também apresentaram associação (PR=1,533; 95%IC: 1,03-2,27). A má qualidade do sono foi um fator importante tanto entre os universitários que relataram bruxismo do sono quanto entre os que apresentaram bruxismo diurno

Objective. The aim of this study was to evaluate the psychometric properties of the Brazilian version of the Dental Fear Survey (DFS), previously translated to the Brazilian Portuguese language and validated.Methods. A cross-sectional study with 1,256 undergraduates from the city of Belo Horizonte, Brazil, was carried out. The DFS and a questionnaire about previous dental experiences were self-administered. Data analysis involved descriptive statistics, principal components analysis (PCA), confirmatory factor analysis (CFA), internal consistency and test-retest reliability, and construct, discriminant, and convergent validity.Results. PCA identified a three-factor structure. CFA confirmed the multidimensionality of the Brazilian version of the DFS. A modified model of the Brazilian version of the DFS fits better than the hypothesized model. The Cronbach’s alpha coefficient for the total DFS scale was 0.95.Conclusion. The DFS demonstrated acceptable construct validity, convergent validity, and discriminant validity. These results supported the reliability and validity of the DFS among Brazilian undergraduates.

A proposta do presente trabalho foi associar a forma de aleitamento com a instalação de hábitos bucais deletérios e conseqüentes maloclusões. Foram examinadas 357 crianças, na faixa etária de 3 a 5 anos, pertencentes a creches e escolas da cidade de Belo Horizonte. Para a obtenção de informações sobre o desenvolvimento das crianças, foram enviados questionários para as mães. Houve um retorno de 289 questionários, sendo avaliadas 289 fichas das crianças participantes. Constatou-se que há associação do aleitamento natural com a não instalação de hábitos bucais viciosos, pois 86,1% das crianças que não apresentaram hábitos deletérios foram aleitadas por, no mínimo, 6 meses. A associação de hábitos bucais com maloclusões foi significante, sendo mais prevalentes as mordidas cruzada posterior e aberta anterior The purpose of the present investigation was to assess the relationship between infant feeding methods, oral habits, and the occurrence of future malocclusions in children. The study comprised 357 children (aged 3 to 5 years) from different social classes who were clinically examined in their nursery schools. In order to gather information on the children's development, a previously tested questionnaire was sent to their homes to be answered by their mothers. Two hundred and eighty nine questionnaires were returned. Hence, only the corresponding 289 clinical examinations were considered for final analysis. It was observed that breast feeding was associated with the absence of oral habits, since 86.1% of the children breast-fed for a period longer than 6 months did not develop oral habits. Posterior crossbite and anterior open bite were the most prevalent types of malocclusion observed

Objective The purpose of our study was to evaluate the association between environmental factors, sleep duration, and sleep bruxism (SB) in schoolchildren. Methods A case-control study was performed. Individuals participating in the study were randomly chosen from public and private schools in Belo Horizonte, Brazil. A total of 120 children with bruxism and 240 without bruxism (mean age, 8years) participated in our study. A questionnaire for parents was used to collect data based on criteria taken from the American Academy of Sleep Medicine . Conditional binary logistic regression statistical tests and χ 2 tests were used for analysis. Results The final logistical model found that children with a median sleep time ⩽8h per night (odds ratio [OR], 2.561 [95% confidence interval {CI}, 1.480–4.433]), who did not enjoy a good night's sleep (OR, 3.253 [95% CI, 1.600–6.615]), who slept with noise in the room (OR, 2.699 [95% CI, 1.645–4.429]), and who had the light on (OR, 2.370 [95% CI, 1.446–3.884]), were more likely to have SB. Conclusion Children who sleep for less than 8h a night are more likely to have SB. Light and noise in the room were two predisposing factors for the occurrence of SB.

Background Tasks can be instruments of stress and may affect the health of children. Sleep bruxism is a multifactorial sleep-related movement disorder that affects children and adults. The aim of the present study was to analyze the association between children’s tasks, personality traits and sleep bruxism. Methods And Findings A cross-sectional, population-based study of 652 randomly selected Brazilian schoolchildren (52% of whom were female), aged from 7 to 10 years was conducted in the city of Belo Horizonte, Brazil. A questionnaire based on criteria proposed by the American Academy of Sleep Medicine (AASM) was completed by parents. In addition, the Neuroticism and Responsibility sub-scales of the Big Five Questionnaire for Children (BFQ-C) were administered to the children. Psychological tests were administered and evaluated by psychologists. The Social Vulnerability Index from the city council database was used to determine the social classification of the families. Chi-square and Poisson regression statistical tests were used with a 95% confidence interval. The majority of families were classified as having low social vulnerability (61.3%), whereas, 38.7% were classified as having high social vulnerability. Regarding extracurricular activities, the majority of girls performed household work (56.4%) and some artistic activity (51.3%) while sporting activities were most common among boys (61%). The results of the Poisson regression model indicated that sleep bruxism was most prevalent in children who scored highly in the Neuroticism sub-scale, and who frequently performed household tasks. Conclusion Children whose personality domain has a high level of Neuroticism and who perform household chores imposed by the family are more vulnerable to sleep bruxism.

Bruxism is the non-functional clenching or grinding of the teeth that may occur during sleep or less commonly in daytime. The aim of this study was to investigate the association between clinical signs and symptoms, parafunctions and associated factors of sleep bruxism in children. A population-based case-control study was carried out involving 120 children, 8 years of age, with sleep bruxism and 240 children without sleep bruxism. The sample was randomly selected from public and private schools in the city of Belo Horizonte, MG, Brazil. Groups were matched by gender and social class. The Social Vulnerability Index (SVI) drawn up by the city of Belo Horizonte was employed for social classification. Data collection instruments included clinical forms and pre-tested questionnaires. The diagnosis of sleep bruxism was supported by the American Association of Sleep Medicine (AASM) criteria. The McNemar test, binary and multivariate logistic regression models were used for statistical analysis. The risk factors associated with sleep bruxism included: primary canine wear (OR=2.3 IC 95% 1.2-4.3), biting of objects like pencils or pens (OR=2.0 IC 95% 1.2-3.3) and wake-time bruxism (tooth clenching) (OR=2.3 IC 95% 1.2-4.3). Children that present the parafunctions of object biting and wake-time bruxism were more susceptible to sleep bruxism. Bruxismo é o ato não funcional de ranger os dentes enquanto se dorme ou apertar os dentes em vigília. O objetivo deste estudo foi investigar a associação entre sinais e sintomas clínicos associados ao bruxismo noturno em crianças. Foi desenvolvido um estudo de base populacional com desenho caso-controle, envolvendo 120 crianças, de 8 anos de idade, com bruxismo e 240 crianças sem bruxismo. A amostra foi selecionada de forma randomizada em escolas públicas e particulares da cidade de Belo Horizonte, Brasil. Os grupos caso e controle foram pareados por gênero e classe social. O Índice de Vulnerabilidade Social (IVS) desenvolvido pela prefeitura da cidade de Belo Horizonte foi utilizado para a classificação social. Como instrumentos de coleta foram utilizados: uma ficha clínica e um questionário pré-testados. O diagnóstico de bruxismo noturno foi baseado nos critérios da American Association of Sleep Medicine (AASM). Os testes estatísticos de McNemar, regressão logística binária e multivariada com modelo de regressão foram utilizados para análise dos dados. Foram considerados fatores de risco para o bruxismo noturno: desgaste em caninos decíduos (OR=2,3 IC 95% 1,2-4,3), morder objetos como lápis e canetas (OR=2,0 IC 95% 1,2-3,3) e apertar os dentes em vigília (OR=2,3 IC 95% 1,2-4,3). Crianças que apresentam outras parafunções tais como: morder objetos e apertar os dentes em vigília são mais susceptíveis ao bruxismo noturno.

OBJECTIVE: To determine the incidence of malocclusion in a 5-year follow-up of school children and verify the hypothesis that individuals with previous malocclusion are more prone to maintain the same characteristics in the transition from primary to mixed dentition. MATERIALS AND METHODS: School children, ages 8 to 11 years, participated. Inclusion criteria consisted of normal occlusion in primary dentition or subsequent malocclusions, anterior open bite and/or posterior crossbite and/or overjet measuring more than 3 mm, and that subjects had not submitted to orthodontic treatment and adenoidectomy. Data collection was based on evaluation of occlusion in school children in the actual stage of mixed dentition. Descriptive, Chi-square, and relative risk (RR) 95% confidence interval (CI) analyses were carried out. RESULTS: The greatest incidence of malocclusion was found in children with malocclusion (94.1%) when compared with those without malocclusion (67.7%) (RR = 1.4 [1.2–1.6]; P < .001). Anterior open bite (RR = 3.1 [1.7–5.8]), posterior crossbite (RR = 7.5 [4.9–11.5]), and overjet greater than 3 mm (RR = 5.2 [3.4–8.0]) in the primary dentition are risk factors for malocclusion in early mixed dentition. Spontaneous correction of the anterior open bite was confirmed in 70.1% of cases. Posterior crossbite and overjet greater than 3 mm were persistent in 87.8% and 72.9% of children. CONCLUSIONS: Malocclusion incidence was high. Individuals with previous anterior open bite, greater overjet, and posterior crossbite had greater risk of having the same characteristics in the mixed dentition.

To investigate the association of finger and pacifier-sucking habits, breathing pattern, and adenoid size with the development of malocclusion in primary dentition.A case-control study was carried out involving 300 preschool children, ages 3 to 6 years, randomly selected from 10 public and 10 private preschools from a large representative sample of 745 children. The study was developed to identify risk factors associated with the development of malocclusion. The case group (n = 150) was composed of individuals with at least one of the following malocclusions: anterior open bite, posterior crossbite, or overjet of more than 3 mm. The control group (n = 150) was made up of individuals without malocclusions. Other variables were assessed through questionnaires about oral habits, including the use of a dummy, finger sucking, duration of these habits; mouth-breathing analysis; and a lateral cephalometric radiograph to evaluate the airway obstruction related to the adenoids. Multiple logistic regression analyses were performed. Statistical significance was P.05.The risk factors for the occurrence of malocclusion in preschool children were duration of pacifier-sucking after 2 years of age (OR = 14.7) and mouth-breathing pattern (OR = 10.9). No significant associations were found between hypertrophied adenoids or finger-sucking habits and the occurrence of malocclusion.The malocclusion in the primary dentition in preschool children was directly related to the duration of pacifier-sucking after 2 years of age and the mouth-breathing pattern.

Introduction Sleep bruxism is an unusual orofacial disorder affecting both children and adults. Its consequences include temporomandibular disorder, muscle pain, periodontal problems, tooth wear and tooth loss. Its aetiology remains unclear, and a multifactorial nature has been attributed to pathophysiological, psychological and morphologic aspects. Most studies carried out so far involve adults and few have investigated younger groups. Hence this study aimed to assess the association between stress levels, personality traits and sleep bruxism in children. Methods A population-based case-control study (proportion of 1:2) was carried out involving 120 children with sleep bruxism and 240 children without this disorder aged between 7 and 11 years. The sample was randomly selected from schools in the city of Belo Horizonte, Brazil. The following instruments were employed for the data collection: questionnaire administered to parents; Child Stress Scale (CSS); and Neuroticism and Responsibility scales of the Big Five Questionnaire for Children (BFQ-C). Psychological tests were administered and evaluated by psychologists. Sleep bruxism was diagnosed from parents9 reports. The χ 2 test, binary and multivariate logistic regression were applied for the statistical analysis. Results In the adjusted logistic model, children with a high level of stress due to psychological reactions (OR=1.8; 95% CI 1.1 to 2.9) and high sense of responsibility (OR=1.6; 95% CI 1.0 to 2.5) had a nearly twofold greater chance of having sleep bruxism in comparison to those with low levels of these psychological traits. Conclusion High levels of stress and responsibility are associated factors for the development of sleep bruxism among children.