open access
Relationship between mandibular symphysis dimensions and skeletal pattern in adults
, 2, 3, 4, 1, 5
Affiliations- Orthodontic Department, Faculty of Dentistry King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Orthodontics, University of Pennsylvania, Philadelphia, United States
- Private Practice, Albany, NY, United States
- School of Orthodontics, Jacksonville University, United States
- Department of Orthodontics, School of Dental Medicine, University of Buffalo, NY, United States
open access
Abstract
Background: The knowledge of dimensions of the symphysis is important for morphological and orthodontic studies. This research evaluates the association between mandibular symphysis dimensions and anteroposterior and vertical
skeletal patterns in adults.
Materials and methods: This cross-sectional cephalometric study included 90 lateral cephalograms of untreated subjects presenting for orthodontic treatment. The inclusion criteria were adults with lateral cephalograms showing the symphyseal region and anterior cranial base. One investigator traced and analysed all cephalograms. Symphyseal height, thickness, and ratio between height and thickness were measured in relation to seven anteroposterior and vertical skeletal measurements in females and males.
Results: Symphyseal measurements were associated with SNAo (anteroposterior) in females and Gonial angle (vertical) in males. When analysed by anteroposterior skeletal classification (ANBo), no significant differences in symphyseal dimensions were found. Multiple linear regression analyses showed that Gonion-Nerve (mm) and Gonial angle were significantly associated with symphyseal height. Gonion-Nerve (mm), basal bone width (mm), and alveolar bone height (mm) were associated with symphyseal thickness. Basal bone width (mm) and alveolar bone height (mm) were associated with symphyseal ratio.
Conclusions: Symphyseal dimensions were significantly associated with vertical but not anteroposterior skeletal patterns. Future studies are warranted to evaluate the Gonion-Nerve measurements concerning the symphysis in relation to vertical and anteroposterior skeletal patterns.
Abstract
Background: The knowledge of dimensions of the symphysis is important for morphological and orthodontic studies. This research evaluates the association between mandibular symphysis dimensions and anteroposterior and vertical
skeletal patterns in adults.
Materials and methods: This cross-sectional cephalometric study included 90 lateral cephalograms of untreated subjects presenting for orthodontic treatment. The inclusion criteria were adults with lateral cephalograms showing the symphyseal region and anterior cranial base. One investigator traced and analysed all cephalograms. Symphyseal height, thickness, and ratio between height and thickness were measured in relation to seven anteroposterior and vertical skeletal measurements in females and males.
Results: Symphyseal measurements were associated with SNAo (anteroposterior) in females and Gonial angle (vertical) in males. When analysed by anteroposterior skeletal classification (ANBo), no significant differences in symphyseal dimensions were found. Multiple linear regression analyses showed that Gonion-Nerve (mm) and Gonial angle were significantly associated with symphyseal height. Gonion-Nerve (mm), basal bone width (mm), and alveolar bone height (mm) were associated with symphyseal thickness. Basal bone width (mm) and alveolar bone height (mm) were associated with symphyseal ratio.
Conclusions: Symphyseal dimensions were significantly associated with vertical but not anteroposterior skeletal patterns. Future studies are warranted to evaluate the Gonion-Nerve measurements concerning the symphysis in relation to vertical and anteroposterior skeletal patterns.
Keywords
mandible, skeletal patterns, dimensions, symphysis
About this articleTitle
Relationship between mandibular symphysis dimensions and skeletal pattern in adults
Journal
Issue
Article type
Original article
Pages
464-471
Published online
2021-04-29
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5596
Article views/downloads
1651
DOI
Pubmed
Bibliographic record
Folia Morphol 2022;81(2):464-471.
Keywords
mandible
skeletal patterns
dimensions
symphysis
Authors
H.Y.A. Marghalani
G. Guan
P. Hyun
S. Tabbaa
A. I. Linjawi
T. Al-Jewair
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