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Updated: Aug 26, 2026
Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
Published on: November 4, 2025
[Congenital absence of upper anterior teeth a dentofacial morphologic analysis]
1Department of Orthodontics, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China. jiguoping31@yahoo.com.cn
Objective:
This study was designed to examine the dentofacial morphology of the children in Shanghai with congenital absence of upper anterior teeth.
Methods:
Cephalometric analysis for 37 children with congenital absence of upper anterior teeth was conducted and was compared with that of the normal ones.
Results:
(1) There was no significant difference in all measurements between gender. (2) Craniofacial defection included a small SNA a small ANB a small AoBo a small angle of convexity,and a large AB plane angle. Vertical facial dimensions which was shown by Y axis and mandibular plane angle significantly decreased. Examination for soft tissue also revealed a small convexity of soft tissue and a large CmSnUL. (3) A compensative proclination of the upper central incisors as well as the upper lip was also found.
Conclusion:
Patients with congenital absence of upper anterior teeth might have a small maxilla a relatively normal mandibular dimension an anticlock rotation of the mandible plane, and a compensative proclination of the upper central incisors and the upper lip.
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