Dentoalveolar and Skeletal Characteristics Associated with Maxillary Lateral Incisor Agenesis in Orthodontic Patients with Permanent Dentition

Abstract

Background & Aim: The aim of this study was to investigate the dentoalveolar and skeletal characteristics associated with maxillary lateral incisor agenesis in orthodontic patients with permanent dentition.

Materials and Methods: The records of the 2506 patients seeking orthodontic treatment were screened for maxillary lateral incisor agenesis (MLIA). The following data were recorded for each subject: age; gender; unilateral or bilateral agenesis of MLI. The lateral cephalogram of each subject with MLIA was traced. The data were compared to with the available cephlometric norm for Syrian individuals with Class I in permanent dentition.

Results: The following cephalometric variables )SNA, SNB, SNPog, NS-SPP, NS-GoMe, SPp-GoMe, ArGoMe, Bjork Sum, Y Axis, Jarabak ratio, I-SN, i-Go Me (, have shown significant differences between the two groups.

Conclusion: The patients with maxillary lateral incisor agenesis had a skeletal class I with both maxillary and mandibular retrognathism, increased vertical proportions, and retroclined upper and lower incisors.