Evaluation of Symphysis Dimensions in Different Skeletal Growth Patterns & Malocclusion in an Iranian Population

Fattahi, HamidReza and Yosefipour, Ehsan and Hedayati, Zohreh (2008) Evaluation of Symphysis Dimensions in Different Skeletal Growth Patterns & Malocclusion in an Iranian Population. Journal of Mashhad Dental School, 32 (2). pp. 151-160.

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Abstract

Introduction: Facial growth pattern especially the mandible is one of the important factors in diagnosing and treatment planning. There are some parameters for evaluation of the growth pattern that symphysis morphology is one of them. The aim of this study was to evaluate symphysis morphology in different growth patterns and malocclusions of Iranian orthodontic patients to determine correlation and relation between them. Materials & Methods: This descriptive cross-sectional study was carried out on 150 cephalometric radiographs of the patients (72 males and 78 females) who had been selected through non probability sampling method. These patients were 13 to 26 years old with mean of 19.1±2.2 years. Height, depth, ratio and angle of symphysis were measured and compared with sagittal & vertical parameters in cephalomtric radiographs. The data were analyzed & compared using ANOVA, and Pearson correlation test through SPSS software. Results: The results showed that there was a significant correlation between symphysis morphology as height, ratio and angle of symphysis with growth pattern of the patients (P<0.01). However, this relation in depth of symphysis was not significant (P>0.05). This study showed that longer symphysis (28.5±2.4), greater height to depth ratio (2.5±2.5) and acute angle (76.3±3.3) of symphysis to mandibular plane were accompanying with vertical growth pattern, while, shorter symphysis (20.2±1.9), less height to depth ratio (1.2±0.4) and obtuse angle (83.8±1.9) of symphysis to mandibular plane were accompanying with horizontal growth pattern. Conclusion: Symphysis ratio (height to depth) is the most important index of symphysis morphology and could be used as an easy way in determining growth pattern. Key words: Symphysis, Facial growth pattern, Malocclusion

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 24 Sep 2017 12:51
Last Modified: 24 Sep 2017 12:51
URI: http://eprints.mums.ac.ir/id/eprint/3106

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