Correlation between Posterior Occlusal Plane and Mandibular Morphology: A CBCT Study

doi:10.13701/j.cnki.kqyxyj.2019.11.017

Abstract

Abstract: Objective: To explore the correlation between posterior occlusal plane (POP) and mandibular morphology by CBCT measurement. Methods: 71 participants were included from imaging database according to the inclusion criteria. The POP and mandibular morphology were measured, and the data were exported to SPSS Ver.25 in which the correlation between both measurements were calculated. Results: (1) The second premolar height (U5 Ht) was positively correlated with PAFH; (2) POP was negatively correlated with Co-Go, Co-Gn and Go-Gn; (3) POP was negatively correlated with articular eminence height; (4) POP was correlated with upper second molar height (U7 Ht), but not significantly correlated with U5 Ht. Conclusion: (1) One main reason for steep POP was decreased U7 Ht which was consequently the key to level the OP; (2) In steep POP group, the mandible was small, retruded and rotated in a backward orientation; (3) Steep POP was strongly correlated with short AE Ht which could alter the morphology and function of mandible in a synergic way.

Key words: occlusal plane, posterior occlusal plane, mandibular morphology, CBCT

LIU Zhiao, XU Weihua, ZHENG Zhijun. Correlation between Posterior Occlusal Plane and Mandibular Morphology: A CBCT Study[J]. Journal of Oral Science Research, 2019, 35(11): 1078-1083.

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