In orthodontics and dentofacial orthopaedics, a thorough knowledge of growth and development is essential in order to understand various factors that contribute as to how a particular type of growth takes place. When planning of orthodontic treatment for a malocclusion, one has to take into account the growth pattern, because it would considerably affect the success of the treatment. The purpose of this study was to compare antegonial notch depth, symphysis morphology, and ramus morphology in different growth patterns in skeletal class I and class II subjects. In this study, a total of 60 cephalograms were taken which comprised 30 cephalograms in skeletal class I and 30 cephalograms of skeletal class II patients. The groups were further divided into three groups, namely average, horizontal, and vertical growth patterns based on Jarabak’s ratio. Antegonial notch depth, symphysis width and symphysis angle, and ramus height were measured and compared between the growth patterns and between class I and class II skeletal patterns. An analysis of variance (ANOVA) test was performed to determine the comparison between groups for all these variables in both skeletal class I and class II. Independent 't' test was done to determine the comparison between skeletal class I and class II subjects for all variables. Mean and SD values for all variables were determined for all the groups. Depth of antegonial notch was found to be greater in vertical growth patterns compared to horizontal and average growth patterns. Large symphysis angle and symphysis width were noted in a horizontal growth pattern. Increased ramus height was noted in horizontal and average growth patterns. There was no significant difference between skeletal class I and class II malocclusion for all parameters.
Biomedical Waste Management practice in Dentistry is an important issue. Therefore, it is of interest to document awareness on such issues among clinical practitioners, academicians and students. A survey was completed using a questionnaire from 355 dentists consisting of 201 students, 39 academicians and 115 clinicians in India. Analysis of the survey data shows that majority of students, practitioners, and academicians are aware of laws binding with such issues. However, the Biomedical Waste Management practice among them is not satisfactory. Therefore, education on such issues among clinical practitioners, academicians and students is critical in this part of the globe.
Mandibular growth pattern (MGP) prediction plays an important role in orthodontic treatment planning. This study sought to assess the mandibular symphyseal width in adolescents with different mandibular growth patterns (MGPs) so as to see whether a correlation exists. This study was conducted on 90 lateral cephalograms of patients aged between 10 and 16 years. The subjects were divided into normo-divergent, hypodivergent and hyperdivergent subgroups based on the gonial angle. The symphyseal measurement included width or depth of the mandibular symphysis according to Akietal study. He suggested that a mandible with anterior growth direction was associated with a large depth of the symphysis. In contrast, a mandible with a posterior growth direction was associated with a small depth of symphysis. To assess the correlation between mandibular symphyseal width and mandibular growth pattern, Pearson’s correlation test was done. Correlation is significant at the 0.01 level (2 tailed). A P-value which is less than 0.05 was considered statistically significant. The mandibular symphyseal width was found to be strongly associated with the MGP. It can be inferred from the results that in vertical growth pattern, as the gonial angle increases, symphyseal width decreases and in horizontal growth pattern, as the gonial angle decreases, symphyseal width increases. Also, in vertical growth pattern subjects, the mandibular symphyseal width is narrower. In contrast, in horizontal growth pattern subjects, the mandibular symphyseal width is wider.
Identifying alveolar bony fenestration and dehiscence preceding orthodontic treatment, especially arch expansion, is needed. An unrevealed and undiagnosed buccal alveolar bone defect leads to treatment relapse and further loss of bony support. The aim of this study was to determine the extent of posterior alveolar bony dehiscence and fenestration in adults undergoing orthodontic treatment. A total of 20 subjects in the age range 18-35 years were selected for this study randomly and their CBCT records were retrieved from the Department of Orthodontics, Saveetha dental college. All statistical analysis was performed using SPSS. Chi-square test was used to determine the association of extent of fenestrations and dehiscence between males and females. Females presented with wider and extensive dehiscence defects than males (p=0.019, p<0.05). On the other hand, there was a statistically non-significant association of fenestration severity between males and females. (p=0.178, p>0.05) Within the limits of this study, it was observed that females presented with more severe bony alveolar dehiscence than males.
Orthognathic surgery is a unique endeavour in facial surgery, a patient’s appearance and occlusal function can be improved significantly, which has a great impact on the patient’s sense of self and well-being. Successful outcomes in modern orthognathic surgery rely on a close collaboration between the surgeon and the orthodontist across all stages of treatment. To assess the frequency of orthognathic surgery in a university hospital setting. Data required for the study was procured by reviewing patient records and analyzed data of 86000 patients between June 2019 to March 2020. The data was sorted in excel and statistically analyzed using the IBM SPSS software analysis and the results tabulated. The frequency of orthognathic surgery in this study was found to be 22.4%. Orthognathic surgery improves the quality of life for all age groups of dentofacial deformities and hence it is imperative to educate people regarding the same.
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