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Original Research
Open AccessA Retrospective CBCT Study of the Relationship between
Mandibular Symphysis Bone Density and Mandibular Growth
Direction
A Retrospective CBCT Study of the Relationship between Mandibular Symphysis Bone Density and Mandibular Growth Direction
1Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, Korea
2Postgraduate Orthodontic Program, Arizona School of Dentistry & Oral Health, A.T. Still University, Mesa, AZ 85206 USA
3Dental Solutions of Cedarbrook 1000 Easton Road, Suite 465, Wyncote, PA USA
4Biostatistics, Department of Interdisciplinary Health Sciences, A.T. Still University, Mesa, AZ 85206 USA
5Department of Oral Anatomy and Developmental Biology, School of Dentistry, Kyung Hee University, Seoul, Korea
6Graduate School of Dentistry, Kyung Hee University, Seoul, Korea
DOI: 10.17796/1053-4625-44.5.11 Vol.44,Issue 5,September 2020 pp.356-363
Published: 01 September 2020
*Corresponding Author(s): Jae Hyun Park E-mail: JPark@atsu.edu
Abstract
Objective: The objective of this retrospective study was to investigate the relationship between mandibular symphysis bone density (BD) and mandibular growth direction in adolescent patients by facilitating the measurement of cortical and cancellous BDs at the mandibular symphysis using cone beam computed tomography (CBCT). Study Design: 224 adolescent patients (98 males and 126 females) were categorized by sex, age, and mandibular growth direction. Cortical and cancellous BDs were measured along with a sagittal slice at multiple locations. Results: Females exhibited higher cortical BD than males at menton (Me, P =0.002). Patients with a posterior growth direction exhibited a higher cortical BD than those with anterior and normal growth direction at Me (P <0.021, P <0.001, respectively), pogonion (Pog, P =0.037, P =0.037, respectively) and genion (Ge, P =0.007, P =0.008, respectively). Patients with a posterior growth direction exhibited a higher cortical BD than those with anterior growth direction at B point (P =0.009). Conclusions: Significant differences in BD were identified across anthropometric categories. These findings may be useful in determining mandibular growth direction in adolescents.
Keywords
Mandibular symphysis; Growth Direction; Bone Density; CBCT
Cite and Share
Jong-Moon Chae,Jay Gousman,Jung Won Seo,R Curtis Bay,Seong-Suk Jue,Jae Hyun Park. A Retrospective CBCT Study of the Relationship between Mandibular Symphysis Bone Density and Mandibular Growth Direction. Journal of Clinical Pediatric Dentistry. 2020. 44(5);356-363.
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