Photobiomodulation in acceleration of orthodontic tooth movement: A systematic review and meta analysis.

BACKGROUND: Photobiomodulation therapy, a non invasive method with no adverse effects, has been used to accelerate tooth movement in orthodontia. However, the specific characteristics of laser settings used in studies documented have reported varied inconsistent conflicting results. OBJECTIVES: We decided to undertake a systematic review to eliminate this inconsistency by quantifying the literature studies that indicated the link between photobiomodulation and acceleration of tooth movement and to assess if there is any association of photobiomodulation therapy in accelerating tooth movement. SEARCH STRATEGY: We systematically searched for articles of existing literatures on Photobiomodulation therapy and acceleration of tooth movement over Cochrane library, Pubmed central, EMBASE, Scopus and Web of sciences from 2000 to 2017. Mesh search terms using various descriptors were used to identify the studies. SEARCH CRITERIA: We included randomized control trial and clinical control trail studies that used Ga-Al-As diode laser and Oseeopulse laser with specific characteristics and company specifications, addressing relevant efficiency and safety outcomes. DATA COLLECTION AND ANALYSIS: Eligible studies were reviewed and data was extracted on a standard from. We used Cochrane review manager software (Revman version 5.3) to assess the qualities of each included trials. Data were analyzed using an inverse variance method with random effects model effect. RESULTS: We observed a statistical significant difference between the photobiomodulation therapy compared to non laser group in the acceleration of tooth movement (Mean difference 0.59 (95%CI- 0.24 to 0.95) I2 95%). However, these results need caution while generalizing in clinical practice due to the large amount of heterogeneity across the studies. CONCLUSION: Findings of the current systematic review suggest a possible benefit with photobiomodulation therapy and tooth movement in orthodontia. However these findings need to be further validated in larger trials using specific standardized characteristics of laser settings to uniform the methodological design that can be used in routine clinical practice.

Age estimation by measurement of open apices in tooth roots: Study using Saudi Arabian samples.

The aim of this study was to verify Cameriere's regression formula to predict chronologic age in Saudi Population and if proven to be inaccurate, develop a new algorithm specific for Saudi children. A total of 788 Orthopantamographs(495 boys and 293 girls) were analyzed. The tooth measurement parameters were: number of teeth with closed apex (N0), open apex width (a), crown length (l), A/L ratio for each tooth (x1to x7) and summation of all open apex width (s). The radiographic measurements were substituted in the formula: Age = 8.971 + 0.375g + 1.631 x5 + 0.674 N0 - 1.034s-0.176s * N0 The mean dental age assessed by Cameriere's method was significantly lower than chronologic age in Saudi population and with both genders and total study population (p < 0.05). A stepwise linear regression showed all parameters gender, N0, x1 to x7 except x2significantly associated with age (R2 = 0.6334, F (6,779) = 168.28, p < 0.05). There was no statistically significant difference between predicted and actual chronologic age for 788 children using regression equation for Saudi population (p = 1). Cameriere's formula verified in Saudi children was found to underestimate the chronologic age in both genders. A prediction formula based on Cameriere's method specific to Saudi children has been developed for estimating chronologic age. The new regression formula developed will be more accurate for age assessment in Saudi children.

Efficacy of a Self-Designed Mobile Application to Improve Child Dental Health Knowledge among Parents.

OBJECTIVES: The objective of the study is to develop a mobile-based application and assess its efficacy in improving child dental health knowledge of parents. SUBJECTS AND METHODS: A mobile-based application (Your child's smile) was developed and made available on application-store and play store. This application provided all essential information to parents on child dental health prepartum and from infancy to adolescence. To assess improvement in parent's knowledge two similar pretested questionnaires were incorporated within the application, one to be filled at initial registration and other after the parents had utilized the application. Responses were entered into MS excel sheet and analyzed using IBM SPSS statistics version 20.0. RESULTS: Within the 15 days' research period, the application was downloaded by 230 parents out of whom 110 answered only the 1st and 120 both questionnaires. Out of the 120 who responded to both majority showed highly significant (P < 0.01) or significant (P < 0.05) improvement in their knowledge on tooth development, importance of deciduous teeth, importance of regular dental check-up, pit and fissure sealants, bedtime bottle use, and consequence of early loss of deciduous teeth. Confidence in child dental health knowledge was also evident in other areas with more parents opting for agreeing, strongly agree, or disagree options. A majority 75% of parents favored the use of mobile applications as an effective child dental health knowledge tool. CONCLUSION: Within the limitations of the study, we can conclude that mobile based applications are an effective tool for providing child oral health knowledge to parents and significant improvement in knowledge is evident after parents utilized the mobile-based application.

Dentists' opinion and knowledge about preventive dental care in Saudi Arabia: a nationwide cross-sectional study.

AIM: The aim of this study was to determine the dentists' opinions on causes for high prevalence of dental caries in the country and to assess their level of knowledge about preventive dental care. MATERIALS AND METHODS: A questionnaire based national crosssectional survey among 500 dentists was conducted under the auspices of Directorate of Dentistry, Ministry of Health. The data was analyzed using SPSS software version 11.0 and descriptive statistics were obtained. RESULTS: The response rate was 87.8% (n = 439). 83% of dentists identified poor oral hygiene as the major reason for high prevalence of caries, only 39% of patients reportedly brushed teeth at least once a day, oral prophylaxis (83%) is the most common preventive practice followed, social factors (62.5%) are the most challenging barriers in preventive dental programs, 71.3% always give chair side dental health education, school based programs (66.6%) are most effective tools for dental health education. CONCLUSION: Majority of dentists in Saudi Arabia are adequately informed and motivated toward preventive dental care but they are in need of further support from policy makers to enhance preventive dental programs in the Kingdom. CLINICAL SIGNIFICANCE: Oral hygiene should be improved in the country by reaching out to the entire community through extensive and continued education programs.