Assessment of Vertical Pattern in Correlation With Third Molar Inclusion : A 3D CBCT Analysis

Central Hospital, Nancy, France

Status: Enrolling

Conditions: Impacted Third Molar Tooth

Treatments: Other: Radiographic measurement

Study type: Observational

Funder types: Other

Identifiers

NCT06320665

2024PI003

Details and patient eligibility

About

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.

Full description

The study is a non-interventional (observational) research involving the human person, research on existing data (retrospective study) and samples dealing with dentofacial orthopedics.

This study analyzes third molar inclusion patterns in relation with the skeletal characteristics, sagittal and vertical typology.

This is a comparative retrospective study of radiographs in three dimensions before any orthodontic treatment. The patients studied are at Bacchetti CS stage 5 (adults), and the third molar must be at least at Nolla stage 6 of formation.

There is no control group but there are subgroups depending of the skeletal characterics.

Enrollment: 80 estimated patients

Sex: All

Ages: 15+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• CMV stage 5 on lateral radiography (end of growth)
• at least one impacted third molar at minimum Nolla stage 6 development

Exclusion criteria

• Previous maxillofacial trauma
• Growing patients
• Missing permanent tooth or early avulsion
• Dysplasia
• Dentofacial deformities
• Endocrinological pathologies with implications for maxillofacial growth
• Syndromes
• History of maxillofacial or orthognathic surgery
• History of orthodontic treatment
• Incomplete data

Trial design

80 participants in 3 patient groups

Class I

Description:

Patient with class I occlusion, with at least one impacted third molar

Treatment:

Other: Radiographic measurement

Class II

Description:

Patients with class II malocclusion, with at least one impacted third molar

Treatment:

Other: Radiographic measurement

Class III

Description:

Patients with class III malocclusion, with at least one impacted third molar

Treatment:

Other: Radiographic measurement