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This within subject clinical experiment assessed oral health impacts before and after Invisalign orthodontic treatment and their relationships with personality characteristics. 50 patients (26 females and 24 males; mean age = 27.62 ± 8.25 years, SE = 1.17, 95% CI = 24.71–29.89 years) were assessed before and after treatment with Invisalign orthodontic treatment. Treatment clinical success was evaluated according defined clinical guidelines. Oral health impacts before and after Invisalign orthodontic treatment were measured via the Oral Health Impact Profile (OHIP). Personality features were measured via the NEO Five-Factor Inventory (NEO-FFI). Probability of α = .05 was utilized to identify significant findings. Females scored less OHIP scores after treatment (had less negative impacts) in comparison to baseline OHIP scores (t = 3.782, df = 25, P = .001, 95% CI of mean difference = 2.750–9.327). Among males, openness scores (R2 = .911, B = 5.235, 95% CI for B = 0.062–10.407, t = 2.601, P = .048) were able to predict OHIP scores before treatment; meanwhile, extraversion (R2 = .959, B = − 8.224, 95% CI for B = − 14.605–1.843, t = − 3.313, P = .021), openness (R2 = .959, B = 21.795, 95% CI for B = 10.737–32.853, t = 5.067, P = .004), and conscientiousness (R2 = .959, B = 10.293, 95% CI for B = 4.796–15.790, t = 4.813, P = .005) scores were useful to predict OHIP scores after treatment (R2 = .959, P P > .05). These findings demonstrate that oral health impacts of Invisalign orthodontic treatment and personality profiles contribution to oral health impacts were different between genders.

Purpose The aim of the present randomized controlled clinical trial was to evaluate the efficacy of photodynamic therapy (PDT) on halitosis in adolescent patients undergoing fixed orthodontic treatment. Materials and methods Forty-five adolescents with halitosis undergoing orthodontic treatment were equally randomized into three groups: Group – I: provision of treatment through PDT on dorsum of tongue; Group – II: provision of treatment with the help of tongue scrappers (TS); Group – III: provision of treatment with the help of TS and adjunctive PDT. Presence of halitosis confirmed on the basis of gas chromatography and estimation of oral malodour with a cysteine challenge and H2S values recorded ≥112 parts per billion (ppb). A portable device Oral Chroma™ was used for performing breath analysis. A total of 5 bacterial species including P. gingivalis, F. nucleatum, P. intermedia, T. forsythia and T. denticola were studied as the proportion of sites defined as having ≥1.0 × 105 bacterial cells. Results The mean age of the participants in Group-I, II and III were 15.4 years, 13.8 years, and 14.2 years, respectively. The median values for Group-I, II and III at initial breath analysis were 874 ppb, 613 ppb and 1089 ppb, respectively. After treatment with the respective therapeutic modalities, a statistically significant difference was seen among groups after 2-weeks (p Table 3 ). After applying Kruskal-Wallis test, group-III showed the highest amount of reduction in H2S concentration (100 %) at final 2-weeks breath analysis compared to group-I and group-II (p = 0.0001). Descriptive statistics for all bacteria showed that group-III (TS + PDT) statistically significantly reduced the proportional distribution of all bacteria at 2-week follow-up (p Conclusion PDT along with tongue scrapping showed effective immediate reduction of H2S concentration and reduction of oral pathogens in adolescent patients undergoing fixed orthodontic treatment with short-term follow up. Long-term evaluation and complete eradication of halitosis needs to be explored in further clinical trials. In addition, the cost of PDT and its potential side effects should not be disregarded.

Aim: The aim of this study was to assess the oral health knowledge, behavior, and practices related to use of miswak (chewing stick) in population of Aseer Region, Saudi Arabia. Subjects and Methods: Of the 2023 participants, 1666 (83.3%) were females and 334 (16.7%) were males. The questionnaires having 10 online questions were used to assess the knowledge of oral hygiene methods, including frequency, reason, and methods for miswak use. Statistical Analysis Used: The survey data were collected and organized into Microsoft Excel spreadsheets (Microsoft Inc., USA) and were statistically analyzed utilizing the Statistical Package for the Social Sciences version 20.0 software (IBM Inc., USA). The statistical test used here was the Chi-square test, and P < 0.05 was considered to be statistically significant (P < 0.05). Results: Participants responded regarding the primary oral hygiene methods; 46.5% respondents used toothbrushes, 44.5% used both toothbrushing and miswak, and 8% used only miswak as their primary tooth cleaning method. 28.2% respondents cleaned their teeth with tooth brush or miswak at least once a day, 37.6% twice, 28.4% whenever required, and 5.9% infrequently. Majority of the participants, i.e. 70.2% were using miswak with taper and as a brush to clean all tooth surfaces. About 84.7% feel fresh, and teeth are whiter after the use of miswak. Nearly, 84.7% prefer to continue using miswak in combination with other teeth cleaning methods, which may have more benefits. Conclusions: In our study, most common type of oral hygiene method employed is toothbrush and in combination with miswak. Chewing stick use was common among participants with religious advice being the dominant reason for usage.