Objective: This study was aimed at understanding the differences in dentoskeletal parameters in short face and long face individuals and to evaluate the factors governing overbite.
Materials and methods:Pretreatment lateral cephalograms of 80 individuals were traced and analyzed. The sample was divided into four groups: -short face male, short face female, long face male and long face female. The descriptive data for all the groups were obtained. Student's t-test (unpaired) was used to compare the dentoskeletal parameters of the groups and correlation analysis was used to study the factors governing overbite.Results: In this study, it was found that there were highly significant differences in the dentoskeletal parameters among the short face and long face groups. It was also revealed that not all short faces had deep bite and, similarly, not all long faces had open bite.
Conclusion:Overbite was governed by a multitude of factors. In the long face group, the major factors governing overbite were lower anterior facial height and the height of anterior mandibular alveolar process. On the contrary, in the short face group, ANB angle and overjet were the governing factors. This study further highlights the interaction between the vertical and sagittal component of malocclusion.
BackgroundPatients seeking orthodontic treatment are usually eager to receive precise information about and objectives: the facial changes that surgical intervention may bring about. Predictions provide a realistic estimate of the outcome of anticipated surgery. It is also an important tool for treatment planning by the clinician. But there are only a few studies which have verified the accuracy of these predictions. Therefore, the aim of the present study was to analyze the accuracy of prediction for mandibular advancement with vertical reduction augmentation genioplasty using the ratios given in the previous studies.
Method:Presurgical and postsurgical lateral cephalograms of 15 patients who had undergone mandibular advancement and vertical reduction augmentation genioplasty were obtained. Paired t-test was used to compare between presurgical prediction and postsurgical outcome. A 'P' value of <0.05 was set for statistical significance.
Results:Findings of this study demonstrate that there is no considerable difference between the predicted finding and the actual postsurgical outcome for mandibular advancement and genioplasty. Previous studies have shown that genioplasty along with mandibular advancement is a stable surgical procedure when rigid fixation is used. As the long term postsurgical changes are minimum, we can rely on these predictions to a greater extent.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.