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The relationship between the chin and anteroposterior cephalometric indices in an Iranian Population

Authors: Rastin Sadeghian, Mohammad Monirifard and Saeid Sadeghian

Int J Med Res Health Sci.93-101 | pdf PDF Full Text

The morphology of mandibular symphysis is considered as one of references for the profile evaluation. This study
tried to investigate the relationship between anteroposterior profile cephalometric indicators and indicators related
to the chin in lateral cephalometric radiography. This observational analytical study (historical cohort) is
performed in the School of Dentistry of Isfahan university of Medical Science. The study was conducted on
201Lateral cephalometry. 67 samples in each group containing 67 class I Patient , 67 adult patients with class II
and 67 adult class III patients. Indices that analyzed Are : B-B1-GN , Si to Li-PGS B-B1-GN , Id-B to Mp ,Id-B to
Mp , Si to Li-PGS ,PG-ME-GO ,Basal Symphisis Width ,Alveolar Symphysis Width , Symphysial Axis , Basal Ratio ,
Alveolar Ratio , Basal Symphysis Angle and Alveolar Symphysis Angle . Data analyzed by using the Spearman test
and ANOVA. Statistical test results showed that there is a correlation between anteroposterior and factor B-B1-GN
and SitoLi-PGs. Based on the results of analysis of variance, and Tukey test of classification I and II factor POGME-
GO, the classification I and III factor of B-B1-GN and Si to Li-PGS and the classification II and III B -B1-GN,
Id-B to Mp, Id-B to Mp, Si to Li-PGS, PG-ME-GO , Alveolar Symphysis Width, Alveolar Ratio, Basal Symphysis
Angle and Alveolar Symphysis Angle , there is a significant difference. There is a significant difference in chin form
in various skeletal classes
Keywords: chin morphology, anteroposterior relationship, Cephalometrics

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