The objective is to compare the sagittal and vertical skeletal parameters of patients with an impacted third molar.
Patients will be analyzed according to their skeletal characteristics: skeletal class (sagittal direction) and facial skeletal typology (vertical direction).
The inclusion characteristics of third molars will also be analyzed, to see the links between typology and inclusion. The principal hypothesis is no significant difference in third molar inclusion patterns in relation to skeletal divergence.
CMV stage 5 on lateral radiography (end of growth)
at least one impacted third molar at minimum Nolla stage 6 development
Previous maxillofacial trauma
Growing patients
Missing permanent tooth or early avulsion
Dysplasia
French adults with at least one impacted third molar
Other
Retrospective
Radiographic measurement
Other interventionMeasurements taken on 3D radiographs, to assess third molar inclusion and skeletal typology (vertical and sagittal)
Distance between the occlusal plane and the second molar
Depth of the third molar in mm
Angle of the third molar
The coronal-radicular axis of the mandibular third molar, and the occlusal plane of the mandibular 1st and 2nd molars, when these are in a normal, functional position on the arch (in degrees)
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