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- W125909537 abstract "This study aimed to investigate the range of mandibular and condylar movements in school children and adults using kinematic variables. Moreover, possible associations of mandibular movements and condylar kinematic variables with specific individual characteristics such as gender, facial type, weight, height, overjet and overbite were studied. In addition, possible differences between the right and the left side of the subjects were examined. For these purposes, axiographic registrations were carried out on 92 children aged 7.2 to 10.6 years (main group) and 40 adults aged 18 to 34.7 years (control group). For this purpose we used the Jaw Motion Analyzer (JMA-) system which was already tested by other researchers for its accuracy and reliability. Statistical analysis of the recording results was carried out using the SPSS for Windows software. The categorical data (facial type, gender) were evaluated by means of one-way analysis of variance (ANOVA). Significance was tested using the F distribution. The associations of continuous, but not normally distributed variables such as size, weight, overjet and overbite with the dependent variables were described using Spearman’s rank correlation rho. Results were considered significant at p<0.05. Since multiple testing of interdependent variables was performed, the significance level was adjusted after Bonferroni to p≤0,005.We used the arbitrary axis-orbital plane as our reference plane which is considered suitable by the manufacturer. The arbitrary axis was defined through the ear tragus superior points of the right and left side. We chose the arbitrary method which has been widely used because it is simple and fast. The bite fork was fastened on the labial surface of the front mandibular teeth. There should be no composite interfering in maximum intercuspation, in order not to affect the function of the mandible. The recorded movements were maximum opening, maximum protrusion, left laterotrusion, right laterotrusion, Posselt frontal and Posselt sagittal. Each movement was repeated twice in order to ensure the accuracy and reproducibility of results. The subjects were asked to sit in an upright and relaxed position, looking straight ahead. Each movement should start and end in maximum intercuspation, and the subjects should perform each movement toothguided and without manipulation.•The present study supports previous findings that younger school children have not yet reached the maximum mouth-opening capacity of the adults. •There was no significant correlation between the maximum mouth-opening capacity and gender, facial type, weight, height, overjet or even overbite for both groups. •A tendency was found in adults that gender may be associated with laterotrusion to the right and the right Bennett angle at 3 mm of laterotrusion (not significant after Bonferroni correction).•No significant correlation existed between the facial type and the kinematic variables for both groups.•A tendency was revealed that body weight may be associated with opening of the right condyle in children, and with the right HCN at 3 mm and 5 mm of protrusion in adults (not significant after Bonferroni correction).•Retrusion of both condyles showed a strong significant correlation with body height in the adults. •There was a tendendy in the children that HCN of both condyles at 5 mm of protrusion may be associated with body height (not significant after Bonferroni correction).•A tendency was found for the overjet to be associated with the condylar path inclination angle of the right condyle at 3 mm of protrusive movement in the children (not significant after Bonferroni correction).•There was a tendendy that the overbite may be associated with retrusion of the left condyle and the laterotrusion to the left in adults and with the left Bennett angle at 3 mm of laterotrusion in children (not significant after Bonferroni correction).•For condylar path length in both children and adults, significant differences were found between the right and the left side." @default.
- W125909537 created "2016-06-24" @default.
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- W125909537 date "2011-09-22" @default.
- W125909537 modified "2023-09-27" @default.
- W125909537 title "Mandibular and condylar movements in children and adults - a trial on kinematic parameters and their association with individual characteristics" @default.
- W125909537 hasPublicationYear "2011" @default.
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