Malocclusion in Lebanese orthodontic patients : An epidemiologic and analytic study – An observational retrospective study

The recognition of malocclusion as an important problem in the public dental health services implies the need of carrying out epidemiologic studies and analysing the prevalence rates of malocclusion. The aim of this present article was to determine the prevalence of malocclusion in 410 Lebanese orthodontic patients (258 girls and 152 boys) referred to the Department of Orthodontics Saint-Joseph University Beirut, at DS6 stage, from different geographic locations. The distribution of malocclusion types according to Angle classification and sex and record frequencies of sagittal, vertical and transverse occlusal abnormalities with possible correlation between them. Class II malocclusion was the most frequently seen (49%) whereas Class III, subdivision the least frequently encountered (2.20%). Statistically significant difference was observed in normal Overjet, Overbite, Cross-bite, slight midline deviation, ANB, NL/ML, NSL/ML according to sex and between FMA, NL/ML, NSL/ML in the hypodivergent and hyperdivergent groups, and between ANB –AoBo in the normal and distal groups. Class II female Lebanese patients have a higher motivation for orthodontic therapy, statistically significant difference was found between vertical and sagittal angles

Quantitative evaluation of adhesion of streptococcus mutans to three orthodontics adhesives: an in vitro study

L’objectif de cette étude in vitro est de comparer l’adhésion des S. mutans sur trois groupes d’adhésifs différents. 108 couronnes dentaires exemptes de carie et autres défauts amélaires sont choisies et calibrées à 4x3 mm2 avec 2mm d’épaisseur. Un échantillon de 36 brackets collés sur ces facettes d’émail avec du “Transbond XT™” (groupe de contrôle) est comparé respectivement à deux groupes d’échantillons identiques collés avec deux adhésifs différents “Transbond Plus™ Self Etching Primer” avec “Transbond XT™” (fluor) et “Clearfil Protect Bond™” avec pâte “Kurasper F™” (antibactérien et fluor). La méthode de culture cellulaire, Kit Dentocult, est adoptée pour compter les bactéries. Une différence significative est notée avec le groupe 2 qui dégage le fluor comparé au groupe 1 de contrôle et pas de différence significative avec le groupe 3 immobilisant le monomère MDPB dans sa résine matrice. Le Transbond Plus™ améliore la capacité antibactérienne due au mode de dégagement de fluor appelé « effet de salve » ou « burst effect ». Le Clearfil Protect™ Bond limite l’action externe autour des brackets par un effet inhibiteur bactériostatique

Evaluation esthétique du profil cutané : une étude transversale

Introduction : L’objectif de cette étude est d’identifier le profil le plus attirant parmi sept photographies distribuées à trois groupes : orthodontistes, dentistes et profanes. Matériels et méthodes : Deux photographies de profil d’un garçon et d’une fille en classe I squelettique ont été modifiées de six façons différentes dans le sens antéro-postérieur au niveau du maxillaire et/ou de la mandibule à l’aide du logiciel Dolphin Imaging System®. Les participants, au nombre de 120, ont classé les photographies de chaque sexe du plus au moins attirant. Résultats : Le profil droit féminin et masculin ont été les mieux classés. Cependant, la protrusion des lèvres chez la femme et la rétromaxillie chez l’homme sont tolérées. Discussion : Nos résultats expriment l’opinion moyenne d’une société caucasienne, cela ne veut pas dire que n’importe quel profil droit est perçu comme beau ou attirant, d’où l’importance d’un plan de traitement individualisé prenant en considération l’esthétique faciale de chaque patient

Cross-cultural adaptation and validation of the child perceptions questionnaire (CPQ11–14) among children in Lebanon

Abstract Background The aim of this study was to assess the reliability, reproducibility, and convergent and discriminant validity of the Child Perceptions Questionnaire (CPQ)11–14 in a group of 11–14-year-old Lebanese children. Methods This was a cross-sectional study. Children aged between 11 and 14 were recruited between March and June 2014 from five schools in Beirut and the surrounding region: a central public school and four private schools. Data were collected from self-administered questionnaires and a clinical intraoral examination was conducted. In addition to the CPQ11–14, the questionnaires included socio-demographic characteristics, questions about each child’s perception of oral and general health status and dental aesthetics, satisfaction with dental conditions and the need for dental treatment. The oral examination included the number of teeth affected by caries (D3 level), fillings, the number of missing teeth and an orthodontic assessment of malocclusion using the Dental Aesthetic Index (DAI). Results The final number of children included was 693 and their mean age was 13.14 ± 0.82 years; 54.4% were boys. The mean CPQ score was 15.60 ± 14.55, range 0 to 110. Cronbach’s alpha of the global CPQ score was 0.880 and varied from 0.897 to 0.908. The reproducibility of the overall CPQ score was good, as was the CPQ score for each of the four domain scores (ICC > 0.682; p < 0.001). Higher CPQ scores were found for children with self-perceived poor general health (p < 0.001) or oral health (p < 0.001), unsatisfactory oral health (p < 0.001), need for dental treatment (p < 0.001) and perception of dental aesthetic problems (p < 0.001). Multiple linear regression models showed that the recruitment setting, the DMFT index and the DAI index were significantly associated with the CPQ global score (p = 0.004). Conclusion The Lebanese version of the CPQ11–14 showed excellent psychometric properties and was able to distinguish children with different oral conditions. Additional longitudinal studies should be performed to test the properties of this questionnaire in clinical samples