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Introduction: The management of eruption disturbances in orthodontics may be challenging and requires a careful diagnosis and treatment planning. This case report discusses the challenges of a two-phase orthodontic treatment of a patient presenting with a dental eruption pattern anomaly. Patient concerns: A 10-year-old boy presented with no complaints for a routine orthodontic evaluation during the mixed dentition. Primary diagnoses: The patient was diagnosed with a skeletal Class I malocclusion with unilateral posterior crossbite, incomplete mandibular lateral incisor-canine transposition and a unilateral maxillary ectopic canine. Interventions: Phase 1 started with rapid maxillary expansion to correct the maxillary constriction and the ectopic eruption of the right maxillary canine. In the mandibular arch, phase 1 included the extraction of the left primary lateral incisor and canine, alignment of the left permanent lateral incisor and orthodontic traction of the left permanent canine. The duration of phase 1 was 14 months. Phase 2 involved a comprehensive course of orthodontic treatment and started when the patient was aged 13 years. This phase lasted 18 months. Results: An adequate dental occlusion was obtained, and the treatment results were stable after an 18-month follow-up. Conclusion: In this case, the early diagnosis of the dental anomalies was valuable as it allowed an early intervention to be undertaken, which resulted in overall treatment simplification and potentially minimised the adverse effects. This case report reinforces the importance of a careful follow-up during mixed dentition. [ABSTRACT FROM AUTHOR]

Copyright of Turkiye Klinikleri Journal of Dental Sciences is the property of Turkiye Klinikleri and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

OBJECTIVES: Impacted canine (IC) is a dental anomaly that varies in its frequency according to the population of interest. The aim of this study is to investigate the frequency and distribution pattern of maxillary ICs (MxIC) and mandibular ICs (MnIC) in the population of Al-Madinah, Saudi Arabia. MATERIALS AND METHODS: A cross-sectional retrospective study of all patients attended Taibah University Dental Hospital, Madinah, Saudi Arabia. Inclusion criteria were individuals aged 15 years and older and no history of orthodontic treatment or craniofacial syndromes. Patients with incomplete dental records or missing/distorted Orthopantomograph (OPG) were excluded. All OPGs were taken using standardized equipment. Data were explored for frequency and pattern of canine impaction both in the maxilla and the mandible and statistically tested to detect significant differences. RESULTS: A total of 7466 individuals fulfilled the inclusion criteria with mean age of 37.43 ± 14.5 years. Of the total sample, 173 individuals had at least one IC. MxIC alone occurred in 86.71% of the cases, while MnIC occurred in 8.67%. The remaining 4.62% had at least one IC in each jaw. Unilateral IC occurred in 89.2% of the cases with left-side predominance in the maxilla. CONCLUSION: In this sample, the frequency of MxIC was 2.1% and MnIC was 0.3%. Almost equal distribution of IC occurred between females and males (IC Odds ratio F:M 1:1.08). Further studies are required to investigate the potential association of IC incidence with other predictor variables. [ABSTRACT FROM AUTHOR]

This case report describes a simple alternative for treatment of mesioangulation of mandibular second molars. An 11-year-old girl was diagnosed with unilateral posterior crossbite, moderate incisor crowding and mesioangulation of the right mandibular second molar. The ectopic second molar was uprighted using a modified lingual arch with a distal hook and elastic chains. Orthodontic traction began after appliance installation and was activated once per month using 120 g of force. After six months, the right mandibular second molar was in an upright position. Orthodontic treatment continued with teeth levelling and alignment until acceptable occlusal and aesthetic results were achieved. Adequate stability was observed one year after debonding. The modified mandibular lingual arch with a distal hook is a simple and effective alternative to manage mesioangulation of mandibular second molars with minimum adverse effects and stable outcomes. [ABSTRACT FROM AUTHOR]

Ectopic eruption of teeth is a rare phenomenon, when teeth are found outside their regular site of eruption. This condition is quite rare in non-dentate regions such as maxillary sinus, nasal septum, mandibular condyle, coronoid process and the palate. The most typical symptomatic presentation of this condition is facial pain. Most of the reported cases of ectopic eruption are permanent third molars and only few cases of ectopic deciduous tooth have been reported in the literature. The purpose of this study is to report a case of ectopic deciduous molar tooth in maxillary sinus in a 13-year-old patient with no related signs and symptoms. [ABSTRACT FROM AUTHOR]

Ectopic eruption of the permanent molar may absorb the distal root of the primary second molar and may result in a decreased arch length or delayed eruption of the permanent tooth, requiring timely treatment. Therefore, we devised an effective and convenient method to unlock the entrapped tooth using a novel device called a "piston-elastic". This case report aims to explain the design and clinical application of this piston-elastic and to describe successful cases. Three patients (aged 6, 13, and 16 years) with ectopically erupted maxillary and mandibular molars, respectively, were treated with a piston-elastic. It was bound to the locked molar to improve the eruption path. After a certain time period, the repulsive force pushed the surface of the adjacent tooth, improving the eruption path of the entrapped tooth. The piston-elastic is a novel device that simply and effectively changes the direction of eruption of ectopically entrapped molars. As it can be manufactured and attached to the chair side, impression acquisition on a model cast and laboratory procedures are unnecessary. Compared to existing methods, the piston-elastic can be easily produced and delivered, causes little irritation, and is inexpensive. [ABSTRACT FROM AUTHOR]

Maxillary canine and first premolar transposition is a complicated dental anomaly to treat, especially if the clinician's goal is to orthodontically move the canine into its normal position. Early diagnosis with cone-beam computed tomography simplifies the treatment of this pathology. This case report describes a patient with bilateral transposition, one complete and the other incomplete, involving the maxillary canine and the first premolar (Mx.C.1P). The orthodontic treatment involved the correction of both transpositions. In the complete transposition, the traction was mesial and upward to move the canine into a more apical position with a wider dentoalveolar process for easier crown interchange. [ABSTRACT FROM AUTHOR]

Copyright of Kieferorthopädie: die Zeitschrift für die Praxis is the property of Quintessenz Verlags GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Firat Universitesi Sağlik Bilimleri Tip Dergisi is the property of Firat Universitesiu, Saglik Bilimleri Enstitusu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Ectopic eruption of teeth is a rare phenomenon although there have been reports of teeth in the nasal septum, mandibular condyle, and maxillary sinus. This impaction can present itself in a variety of ways such as chronic or recurrent sinusitis, sepsis, and facial numbness and can also be asymptomatic. The aim of this study was to describe, by means of research literature and by a case report, the characteristics and occurrence of ectopic eruption in the maxillary sinus. We have analyzed and compared clinical cases of ectopic teeth in the maxillary sinus with a search on PubMed utilizing keywords such as "ectopic," "teeth," "sinus," "maxillary," and Boolean operators "or" and "and" up until 2016. Fifty-one cases were found, of which 53% were female. The age ranged between 3 and 72 years, with an average age of 28.36 years. The higher prevalence of ectopic teeth is the 3rd molars. Ten of these teeth are associated with a dentigerous cyst, 1 by an osteoma, and 2 by soft tissue. Standard treatment for an ectopic tooth is extraction, but for other patients, treatment of choice in asymptomatic ectopic tooth cases is continued observation. Ectopic teeth tend to form a cyst or tumor if not managed. [ABSTRACT FROM AUTHOR]

Although many reports have demonstrated that ectopic pain develops in the orofacial region following tooth pulp inflammation, which often causes misdiagnosis and inappropriate treatment for patients with pulpitis, the precise mechanism remains unknown. In the present study, we hypothesized that the functional interaction between satellite glial cells and neurons mediated by interleukin 1β (IL-1β) in the trigeminal ganglion (TG) is involved in ectopic orofacial pain associated with tooth pulp inflammation. The digastric muscle electromyogram (D-EMG) activity elicited by capsaicin administration into the maxillary second molar tooth pulp was analyzed to evaluate the noxious reflex and was significantly increased in rats with inflammation of the maxillary first molar (M1) versus rats injected with saline. A significant increase in the expression of connexin43 (Cx43), a gap junction containing protein, was observed in activated satellite glial cells surrounding second molar-innervating neurons in the TG after M1 pulpitis. Daily administration of Gap26, a Cx43 mimetic peptide and inhibitor, in the TG significantly suppressed the enhancement of capsaicin-induced D-EMG activity and the percentage of Fluoro-Gold (FG)-labeled cells encircled by glial fibrillary acid protein-immunoreactive (IR) + Cx43-IR cells after M1 pulp inflammation ( P < 0.01). The percentage of FG-labeled cells encircled by glial fibrillary acid protein-IR + IL-1β-IR cells, IL-1 type I receptor-IR cells labeled with FG, and TRPV1-IR cells labeled with FG significantly increased after M1 pulp inflammation ( P < 0.01). Daily administration of IL-1ra, an IL-1 receptor antagonist, into the TG significantly reduced the enhancement of capsaicin-induced D-EMG activity and the percentage of TRPV1-IR neurons labeled with FG after M1 pulp inflammation ( P < 0.01). The present findings suggest that satellite glial cell is activated in the TG via activated gap junctions composed of Cx43 following tooth pulp inflammation, which leads to the hyperactivation of remote neurons via IL-1β mechanisms and results in ectopic tooth pulp pain in the adjacent tooth. [ABSTRACT FROM AUTHOR]

Purpose The aim of this study was to investigate the prevalence and characteristics of ectopically erupting first permanent molars (FPMs) in children attending the clinics of the Pediatric Dentistry Department at İstanbul University. Materials and methods This retrospective study was performed using panoramic radiographs of 7,649 patients (3,506 females and 4,143 males) aged from 5 to 11 years. The age and gender of the subjects, the number and location of the ectopic molars, bilateral versus unilateral occurrence, the degree of resorption of the roots of the primary molars, and other associated dental anomalies were assessed. Ectopic eruption was categorized according to a grading system based on the resorption rates of the primary molars. Results Of the 7,649 reviewed subjects, 203 (118 males and 85 females) were diagnosed with ectopic eruption of the FPMs, resulting in a frequency of 2.65%. The mean age of the subjects with ectopic FPMs was 6.82±1.25 (range: 5--11) years. Of the 273 ectopic FPMs, 157 (57.5%) were detected in the maxilla and 116 (42.5%) in the mandible. Severe and very severe degrees of ectopic eruption were found to be more common in the maxilla than in the mandible, whereas a moderate degree of ectopic eruption was more prevalent in the mandible (p=0.251). Conclusion To our knowledge, this is the first study in a Turkish population reporting the prevalence of ectopic eruption of FPMs. Although the difference between the right and the left sides was not significant, the severity of ectopic eruption was different between the maxilla and the mandible. [ABSTRACT FROM AUTHOR]

Copyright of Acta Odontológica Colombiana is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Ectopic mandibular third molar is a rare clinical entity with incompletely known etiology. Here, we sought to delineate its epidemiological, clinical and radiographic characteristics, and therapy by integrating and analyzing the cases treated in our institution together with previously reported cases. Method: A new definition and classification for ectopic mandibular third molar was proposed based on its anatomic location on panoramic images. Thirty-eight ectopic mandibular third molars in 37 patients and 51 teeth in 49 patients were identified in our disease registry and from literature (1990-2016), respectively. These cases were further categorized and compared according to our classification protocol. The demographic, clinicopathological and radiographic data were collected and analyzed. Results: These ectopic teeth were categorized into four levels, 33 in level I(upper ramus), 32 in level II (middle ramus), 15 in level III (mandibular angle) and 9 in level IV (mandibular body). The common clinical presentations included pain, swelling and limited mouth opening, although sometimes asymptomatic. Most teeth were associated with pathological lesions. Treatments included clinical monitor and surgical removal by intra- or extraoral approach with favorable outcomes. Clinical presentations and treatment options for these teeth were significantly associated with their ectopic locations as we classified. Conclusions: Ectopic mandibular third molars are usually found in patients with middle ages and in upper and middle ramus of mandible. Surgery is preferred to remove these ectopic teeth and associated pathologies when possible. [ABSTRACT FROM AUTHOR]

Objective: The purpose of this study was to investigate the diagnostic aspects, contributing conditions, and predictive key factors associated with ectopic eruption of maxillary second molars. Material and Methods: This retrospective study evaluated the study models, lateral cephalographs, and panoramic radiographs of 40 adult subjects (20 men, 20 women) with bilateral ectopic eruption and 40 subjects (20 men, 20 women) with normal eruption of the maxillary second molars. Studied variables were analyzed statistically by independent t-tests, univariate and multivariate logistic regression analysis, followed by receiver-operating characteristic analysis. Results: Tooth widths of bilateral lateral incisors, canines, and premolars were wider in the ectopic group, which resulted in greater arch lengths. The ANB angle and maxillary tuberosity distance (PTV-M1, PTV-M2) were smaller in the ectopic group. The long axes of the maxillary molars showed significant distal inclination in the ectopic group. The multivariate logistic regression analysis showed that three key factors�arch length, ANB angle, and PTV-M1 distance�were significantly associated with ectopic eruption of the second molars. The area under the curve (AUC) was the largest for the combination of the three key factors with an AUC greater than 0.75. PTV-M1 alone was the single factor that showed the strongest association with ectopic eruption (AUC 0.7363). Conclusions: An increase in arch length, decrease in ANB angle, and decrease in maxillary tuberosity distance to the distal aspect of the maxillary first molar (PTV-M1) were the most predictive factors associated with ectopic eruption of maxillary second molars. [ABSTRACT FROM AUTHOR]

Objectives: The aims of this study were to assess long-term impact of tooth eruption stages (ES) on sealant retention on occlusal surfaces previously coated with intermediary bonding layer and to determine caries prevention. Materials and methods: Sixty-five school children were selected (aged 6-10 years), with four non-carious permanent first molar in different ES (OP (operculum present), ME (marginal edge), CE (completely erupted)). Split-mouth and single-blind study design was used. The teeth (260) were randomly selected according to treatment (sealant/technique): F (Fluroshield), H (Helioseal Clear Chroma), SF (Single Bond + F), EH (Excite + H). Sealant retention, marginal integrity, discoloration, and caries prevention were assessed after 6, 12, 18, and 24 months by calibrated examiner (Spearman = 0.91) using visual inspection. Data were submitted to the Cox proportional hazard model (survival analysis) and Likelihood ratio χ test (correlation), p ≤ 0.05. Results: At baseline, ES was 20 % in OP, 54 % in ME, and 26 % in CE. There was no significant difference on sealant retention between the treatments ( p = 0.2774). However, significant differences were found regarding the ES on sealant retention ( p = 0.0041). The CE stage showed the highest retention survival rate during the 24 months. The overall sealant prevention average was found to be about 99.4 % and showed no difference between the groups. Conclusions: Eruption stages affect sealant retention irregardless of the intermediate layer and type of sealant. However, there was caries prevention on tooth occlusal surfaces after 24 months, regardless of treatment. Clinical relevance: Sealing is recommended to prevent occlusal caries of newly erupted teeth in high-caries-risk patients. However, its application is critical on moisture limited control surfaces independently of sealer material and technique. [ABSTRACT FROM AUTHOR]

Background: Ectopic eruption and/or impaction of maxillary permanent canines is a frequent problem in clinical dentistry. Previous studies aimed to identify potential associated factors and predictors for impacted maxillary canines have only used conventional univariate statistics, which does not allow the analysis of the interaction between and within variables. Multivariate data analysis (MVDA) is a better and more powerful tool for the integration and interpretation of complex datasets. Aim: The aim of this study was to validate previously explored predictors of permanent maxillary canine impaction using MVDA. Subjects and methods: This cohort study included all the patients referred during 2011 to Mölndal Hospital, Sweden for surgical exposure of impacted canines (N = 45). Age- and gender-matched orthodontic patients (N = 45) with normally erupting canines comprised the control group. The age range for both groups was 11-17 years. The positions of the canine teeth (orthopantograms), the skeletal variables (profile radiographs), and dentoalveolar traits (casts) were evaluated as potential predictive factors for impaction. Results: None of the parameters evaluated with either profile radiography or casts were positively correlated with impacted maxillary canines, with the exception of the location of the already impacted canines, as identified by orthopantogram. Conclusion: No correlation between clinical variables and impaction was found using MVDA. Therefore, these variables could not be used as predictors of canine impaction. Other types of parameters, such as inheritance and molecular factors that regulate the biological mechanisms of the eruption process, need to be further investigated. [ABSTRACT FROM AUTHOR]

The report presents examples of successful cases of autotransplantation of ectopic teeth as donor in the treatment of clinically missing maxillary anterior teeth in young patients. The transplanted teeth were either severely ectopic, inverted, rotated or in an unfavourable position that they are commonly sacrificed as a result. Details of surgical technique as well as clinical and radiographic assessments were discussed. [ABSTRACT FROM AUTHOR]

Background: The etiology of ectopic third molars located in the sigmoid notch of the mandible is unclear. Only a few cases have been reported. The aim of this article is to discuss the etiology as well as treatment options and diagnostic imaging techniques. Methods: A PubMed and Medline search of the literature from 1965 to 2015 to ectopic third molars in the mandibular notch was performed. Furthermore, a clinical case provided by the authors is reported. Results: Among the eight reviewed cases, two male and six female patients were affected that ranged from 25 to 62 years of age (mean 48.4). Pain and swelling in the preauricular region or trismus but also the absence of symptoms was reported. Only in two of the summarized articles an extra-oral access for the removal of the tooth was used. The etiology seems to be individually different, however dentigerous cysts and chronic inflammation seem to play an important role in their appearance. While previous diagnostic reports described two-dimensional diagnostic imaging, currently the three-dimensional imaging is common for preoperative surgical planning with respect to removing ectopic molars. Conclusions: Ectopic third molars in the mandible are a rare condition. The etiology seems to be individually different. Nowadays, three-dimensional imaging is common for preoperative surgical planning. [ABSTRACT FROM AUTHOR]

Ectopic eruption is a deviation from the normal eruption pattern, making the tooth erupt out of its normal position, and possibly causing resorption of adjacent primary teeth. A wide range of etiological factors may be responsible for ectopic eruption of the teeth, so their management depends on the correction of the established etiological factor. The present case report describes an unusual case of ectopically erupted central incisor encased within an abnormally thickened labial frenum, which was treated by orthodontic repositioning of the ectopically erupting tooth after frenectomy. [ABSTRACT FROM AUTHOR]

This review article describes the changing approach to the management of various impacted teeth. Currently, more third molars are being retained, and it is likely that more patients will develop impactions than a generation ago because of non-extraction orthodontic treatment plans. There are still valid reasons for the surgical removal of selected third molars during the teenage years, during which time impaction can be anticipated to avoid the higher rate of morbidity associated with later removal. Palatally-impacted canines (PIC) can now often be managed with interceptive and non-surgical approaches, which are attractive options. The various approaches addressed in the literature are discussed. [ABSTRACT FROM AUTHOR]

Background: The etiology of ectopic third molars located in the sigmoid notch of the mandible is unclear. Only a few cases have been reported. The aim of this article is to discuss the etiology as well as treatment options and diagnostic imaging techniques. Methods: A PubMed and Medline search of the literature from 1965 to 2015 to ectopic third molars in the mandibular notch was performed. Furthermore, a clinical case provided by the authors is reported. Results: Among the eight reviewed cases, two male and six female patients were affected that ranged from 25 to 62 years of age (mean 48.4). Pain and swelling in the preauricular region or trismus but also the absence of symptoms was reported. Only in two of the summarized articles an extra-oral access for the removal of the tooth was used. The etiology seems to be individually different, however dentigerous cysts and chronic inflammation seem to play an important role in their appearance. While previous diagnostic reports described two-dimensional diagnostic imaging, currently the three-dimensional imaging is common for preoperative surgical planning with respect to removing ectopic molars. Conclusions: Ectopic third molars in the mandible are a rare condition. The etiology seems to be individually different. Nowadays, three-dimensional imaging is common for preoperative surgical planning. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Health Sciences (2447-8938) is the property of Unopar Cientifica Ciencias Biologicas e da Saude and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Tooth eruption sequences vary in a non-random way among mammalian species. Several variables have been linked to this, including tooth and jaw shape, adaptations to diet, and food processing. Likewise, changes in eruption patterns correlate with the speed of postnatal growth in some groups, the Schultz's Rule pattern. Here, the eruption pattern of the permanent dentition in lower jaws from different cervid species have been investigated to discern the effect of these factors and phylogeny as well as to reconstruct the ancestral tooth eruption sequence of cervids. In ruminants, the different patterns of emergence of permanent teeth seem to be best explained by phylogeny. The degree of hypsodonty, age of first molar eruption, and life history parameters such as longevity and age of female sexual maturity do not explain the observed sequential differences in eruption patterns. The Parsimov-based analysis for the ancestral state resulted in a tooth eruption sequence of m1 - m2 - i1 - i2 - i3 - c - m3 - (ppp) for Cervidae; a pattern recorded in Odocoileus, Capreolus, and Hydropotes. The eruption pattern of Caenomeryx filholi, from the Oligocene of Gaimersheim, is identical to the result of the Parsimov-based analysis except for the presence of a first premolar, a tooth lost in cervids. [ABSTRACT FROM AUTHOR]

Objectives: The premature loss of primary teeth is a potential risk factor for poor arch length development. Adequate arch length is important to the progression of the permanent teeth. Poor arch length can lead to crowding, ectopic eruption, or impaction of these teeth. This study is designed to assess the prevalence of premature loss of primary teeth in the 5-10-year-old age group. Materials and Methods: The study group included 185 children, that is, 91 boys and 94 girls. The dental examination was conducted by an experienced examiner under sufficient artificial light. Data including patient age and missing teeth were collected. Descriptive statistics were applied for data analysis, and from the results, Chi-square tests were used at a level of significance of 5% (P < 0.05). Results: We observed a 40.54% prevalence of premature loss of primary teeth with no statistically significant difference between genders. The lower left primary second molar was the most commonly absent tooth in the dental arch (13.5%). Conclusion: The status of premature loss of primary teeth was high in the study group. Implementation of efficient educational and preventive programs to promote oral health would help children maintain a healthy primary dentition and eventually prevent the disturbances in the future development of normal occlusion. Early detection and management of the space problems associated with the early loss of primary teeth would help in reducing malocclusion problems. [ABSTRACT FROM AUTHOR]

Tooth transposition is a rare dental anomaly that often represents a challenge for the clinician. The case of a girl with skeletal Class III malocclusion and concomitant maxillary canine-first premolar bilateral transposition, followed from 7 to 17 years of age, is presented. After a first phase of treatment aimed at resolving the Class III malocclusion, the transposition was maintained and the case finalized with a multibracket appliance. [ABSTRACT FROM AUTHOR]

Ectopic eruption of a tooth within the dentate region of the jaws is often noticed in clinical practice and is well documented in the literature but the ectopic eruption into the non dentate region is rare. Diverse anatomical locations such as nasal cavity, nasal septum, mandibular condyle, coronoid process, the palate and the maxillary sinus can infrequently be non dentate sites of ectopic eruptions of teeth. While conducting an anthropometric study on 100 skulls an incidental and interesting case of ectopic maxillary third molar tooth was found. The tooth was partially erupted with the unerupted part lying impacted in the posterior wall of maxilla. The case is reported and discussed for its significant clinical implications. [ABSTRACT FROM AUTHOR]

Copyright of Firat Universitesi Saglik Bilimleri Veteriner Dergisi is the property of Firat Universitesiu, Saglik Bilimleri Enstitusu and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective. To assess the incidence and severity of root resorption of maxillary incisors caused by ectopically and normally erupting maxillary canines and to analyse factors influencing root resorption of incisors using cone beam computed tomography. Subjects and methods. The study sample comprised 59 patients with a total of 80 canines. Forty-six of the canines, in 37 patients, were defined as ectopic and 34 canines, in 22 patients, were defined as normal. The severity of root resorptions were analysed according to studies by Ericson and Kurol. Multiple logistics regression was used to evaluate the association between various factors and root resorptions. Results. The prevalence of root resorptions was significantly higher in the ectopic canine group, 11.0% of the central incisors and 67.6% of the lateral incisors in comparison to 0% and 36.2% in the normal erupting group. Most resorptions were defined as 'slight' and were located in the middle third of the root. There was a statistically significant relationship between canines located mesial to the midline of the lateral incisor and root resorption on the maxillary incisors. Conclusion. The present results show that root resorption of maxillary lateral incisors was common in patients referred to CBCT imaging due to maxillary canine eruption disturbances. Although significantly more frequent in patients with ectopically erupting canines, lateral incisor resorption was also found in association with approximately every third of the normally erupting canines. The best predictor for root resorption seemed to be location of the canine mesial in relation to the midline of the lateral incisor root. [ABSTRACT FROM AUTHOR]

Purpose To describe a nasolacrimal duct ( NLD) obstruction secondary to an ectopic tooth in a 5-year-old male Border collie. The dog was presented with a 1-month history of mucopurulent discharge from the left eye ( OS) preceded by a lifelong history of epiphora OS. Treatment with neomycin/polymyxin B/dexamethasone ophthalmic solution had not improved the clinical signs, and the NLD was not patent when irrigated by the referring veterinarian. Methods A complete ophthalmologic examination was performed followed by dacryocystorhinography and computed tomography ( CT). Results The ophthalmologic examination revealed marked mucopurulent discharge, mild conjunctivitis, slightly elevated STT measurements, and a negative Jones test OS. Both nasolacrimal puncta OS could be cannulated without resistance for approximately 1.5 cm. Upon irrigation, copious amounts of mucopurulent discharge were exited through the corresponding punctum, while no fluid could be detected at the nares. Dacryocystorhinography was performed. Radiographs revealed an ectopic left canine tooth within the left nasal cavity. A cystic dilation of the NLD was observed proximal to the ectopic tooth. Computed tomography was performed to determine the exact position of the tooth and possible involvement of adjacent structures; CT confirmed the previous imaging findings. Treatment with systemic antibiotics, NSAIDs, and ofloxacin ophthalmic solution led to resolution of the clinical signs within several days. Surgery was declined by the owner. Conclusion This is the first case report describing a blocked NLD due to an ectopic tooth in a dog. Ectopic teeth should be included as a differential diagnosis in cases of dacryocystitis and chronic epiphora in dogs. [ABSTRACT FROM AUTHOR]

Copyright of Médecine Buccale Chirurgie Buccale is the property of EDP Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Nuclear factor kappa B (NF-κB) signaling plays critical roles in many physiological and pathological processes, including regulating organogenesis. Down-regulation of NF-κB signaling during development results in hypohidrotic ectodermal dysplasia. The roles of NF-κB signaling in tooth development, however, are not fully understood. We examined mice overexpressing IKKβ, an essential component of the NF-κB pathway, under keratin 5 promoter (K5-Ikkβ). K5-Ikkβ mice showed supernumerary incisors whose formation was accompanied by up-regulation of canonical Wnt signaling. Apoptosis that is normally observed in wild-type incisor epithelium was reduced in K5-Ikkβ mice. The supernumerary incisors in K5-Ikkβ mice were found to phenocopy extra incisors in mice with mutations of Wnt inhibitor, Wise. Excess NF-κB activity thus induces an ectopic odontogenesis program that is usually suppressed under physiological conditions. [ABSTRACT FROM PUBLISHER]

Introduction: Ectopic teeth occur in a wide variety of sites, including the maxillary sinus, mandibular condyle, coronoid process, orbital, and nasal cavities. Reported symptoms and signs associated with nasal teeth include facial pain, external nasal deformities, foul-smelling rhinorrhea, recurrent epistaxis, and oronasal fistula. Ectopic teeth occurring bilaterally in the nasal cavity is very very rare. Case Report: A bilateral intranasal ectopic teeth case, which is asymptomatic on the right side and symptomatic on the left side, is presented. The tooth on left side was extracted endoscopically. There were no complications. Conclusion: Extraction of an intranasal tooth under endoscopic guidance is an adequate treatment. If the ectopic intranasal tooth is asymptomatic, clinicians should follow with clinical examination and radiological imaging. [ABSTRACT FROM AUTHOR]

Ectopic eruption is a developmental disturbance in which the tooth fails to follow its normal eruption pathway. Ectopic eruption of the second molar is relatively rare. This paper presents the case of thirteen-year-old male with an ectopic mandibular second permanent molar. The condition was corrected with surgical exposure and placement of elastic separators. This case report lays emphasis on the practice of basic methods to obtain acceptable results rather than extensive surgical or orthodontic corrections. It is advised that ectopic teeth should not be neglected especially when it concerns developing caries and malocclusion. [ABSTRACT FROM AUTHOR]

Copyright of Universitas Odontológica is the property of Pontificia Universidad Javeriana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: Ectopic tooth eruption may result owing to one of 3 processes: developmentalDisturbance, iatrogenic activity, or pathologic process, such as a tumor or a cyst. In rare cases, occlusion of the sinus ostia may predispose a patient to develop a maxillary sinus mucocele. When the maxillary sinus is invaded, symptoms usually occur late in the process. Case Report: A 17 years old boy referred to department of Otolaryngology, Head and Neck Surgery of university of medical sciences, Tabriz_Iran in 2010 with chronic recurrent mucoprulent discharge from retromollar trigone, posterior to right superior alveolar ridge. CT scan revealed a dense mass resembling tooth, obstructing sinus ostium with homogenous opacity with ring enhancement, occupying whole sinus and expanding all walls. A Caldwell Luke approach in combination with endoscopy was selected. Conclusion: In the present patient, removal of ectopic tooth resolved the symptoms completely, the fistula obstructed and discharges discontinued. An ectopic tooth is a rare entity obstructing sinus ostium. The etiology of ectopic eruption has not yet been completely clarified, but many theories have been suggested,including trauma, infection, developmental anomalies and pathologic conditions, such as dentigerous cysts. In summary, although the ectopic teeth is rare but it would be assumed in presence of unilateral symptoms of sinonasal cavity. Therefore in peristant unilateral sinonasal symptoms we should complete examining of this site to rule out rare causes of these symptoms. [ABSTRACT FROM AUTHOR]

Introduction: Nasal teeth eruption is a rare phenomenon. The variability of symptoms and generic history makes the diagnosis difficult. This difficulty is more challenging when the tooth is placed in the depth of septum. Case Report: Our case is an example of this problem. Herein, we present a case of intraseptal tooth with nasal obstruction and septal deviation and recurrent sinusitis. We present preoperative imaging. Conclusion: Great suspicion may helpful for preoperative diagnosis and good deciding. [ABSTRACT FROM AUTHOR]

Rothmund-Thomson syndrome (RTS) is an extremely rare genetic condition exhibiting some dermatological, craniofacial, ophthalmological, and central nervous system abnormalities. It has an autosomal, recessive inheritance and its signs begin at childhood. Essential dermatological alteration is poikilodermatosis. A large head with an frontal bossing and broad low nasal bridge has been described in patients with RTS. Bilateral juvenile cataract is a characteristic finding of patients with RTS. Most of the patients have beenmarkedly short and the growth retardation has been proportionate. Mental retardation is a rare condition. An 11-year-old girl who had been previously diagnosed with RTS was consulted with a chief complaint of delaying in tooth eruption. Intraoral examination revealed median rhomboid glossitis in addition to hyperkeratotic tongue. This report aimed to not only present intraoral findings of RTS, but also to demonstrate the lingual findings of a patient with RTS. [ABSTRACT FROM AUTHOR]

The term odontogenic keratocyst was first used by Philipsen in the year 1956. The lesion was renamed by him as keratocystic odontogenic tumor (KCOT) and reclassified as odontogenic neoplasm in theWorld Health Organization's 2005 edition that occurs commonly in the jaws having a predilection for the angle and ascending ramus of mandible. In contrast, KCOTs arising in the maxillary premolar region are relatively rare. Here, we discuss a rare case of keratocystic odontogenic tumor occurring in the maxilla with an ectopic tooth position. [ABSTRACT FROM AUTHOR]

Ectopic eruption of teeth has been reported in mandibular condyle, coronoid process, orbit, maxillary antrum, palate, nasal septum and chin. But an erupted supernumerary nasal tooth is rare. Although asymptomatic in some, a nasal tooth has the potential to cause epistaxis, septal perforation, rhinorrhea and several other complications. It is still rare for a nasal tooth to be associated with Oro-facial-digital syndrome which is a genetic malformation involving oral, facial and digital structures accompanied with varying degrees of mental retardation. The oral and dental manifestations of this syndrome include hypertrophic frenula, lingual hamartomas, ankyloglossia, dental caries, anomalous anterior teeth, enamel hypoplasia, supernumerary teeth and missing teeth. Presented is a case of an erupted tubercular mesiodens in the nasal cavity of a boy aged ten years. To the best of our knowledge, this is the first reported case of a nasal tooth in a child with oro-facial-digital syndrome. Children born with structural anomalies of the face, oral cavity and digits should be thoroughly evaluated to rule out the possibility of syndromes. Moreover, a multidisciplinary approach is required to render the best treatment to the patient. Also, a nasal tooth should be considered a possibility amongst undiagnosed nasal masses. [ABSTRACT FROM AUTHOR]

Ectopic eruption of teeth within the dentate region of the jaws is frequently noticed in routine clinical practice. However, the ectopic eruption in a non-dentate region is rare, especially in the area of the maxillary sinus. Early surgical intervention for the removal of ectopic teeth along with enucleation of associated cyst, such as a dentigerous cyst, if present, is the preferred treatment. We report a case of a patient who was referred due to chronic mucopurulent discharge and epistaxis, nasal obstruction and unilateral facial pain due to an ectopic third molar. This condition was caused by an ectopic tooth near the sinus ostium; however, the patient had no dental complaints. [ABSTRACT FROM AUTHOR]

Osseous choristoma is a normal bone tissue in an ectopic position. These are slow growing lesions that are usually completely asymptomatic and only present when there is a disruption in the function of the organ due to its large size as it grows. Definitive diagnosis is obtained only after the histopathological examination. The etiology remains still questionable. The treatment of choice is surgical excision. Here we report a case of choristoma in the lower labial mucosa in a 47-year-old female. [ABSTRACT FROM AUTHOR]

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Location of ectopic tooth in a nondentate area like the maxillary antrum is rare. A17-year-oldboy, with one year history of recurrent right facial swelling and radiographic finding of a maxillary third molar tooth located at the posterior wall of the maxillary antrum, is presented. Under endotracheal intubation, the tooth was extracted through a Caldwell-Luc antrostomy approach and patient had an uneventful recovery and has been symptom free for eight months. Ectopic tooth in the maxillary antrum is rare and is commonest with maxillary third molar. It may be symptomless but is more commonly associated with inflammatory symptoms. The treatment of choice is surgical excision which is mostly carried out with Caldwell-Luc approach, even though endoscopic approach is being reported. [ABSTRACT FROM AUTHOR]

Third molar removal is among the most common surgical procedures performed around the world.1,2 Nevertheless; few cases of ectopic third molar in the subcondylar region of the mandible have been reported. Considering the rarity of this condition, the etiology and management remain unclear3-8. [ABSTRACT FROM AUTHOR]

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Only few cases of ectopic third molar in relation to the roof of maxillary sinus and posteroinferior to the floor of the orbit have been reported in the literature. The diagnosis is usually done by plain-film radiography. "Caldwell-Luc" operation or endoscopic procedures have been used for the removal of such type of ectopic tooth. We report a case of 46-year-old female patient who presented with pain, swelling and watering of eye due to the ectopic tooth. The trans oral removal (via "Caldwell-Luc" operation) of the ectopic maxillary third molar situated superior to maxillary antrum and posteroinferior to the floor of orbit has been described in this case without any complication. [ABSTRACT FROM AUTHOR]