Assessment of Vertical Pattern in Correlation With Third Molar Inclusion : a 3D CBCT Analysis
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 80
- 试验地点
- 1
- 主要终点
- Distance between the occlusal plane and the second molar
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 15 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •CMV stage 5 on lateral radiography (end of growth)
- •at least one impacted third molar at minimum Nolla stage 6 development
排除标准
- •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
结局指标
主要结局
Distance between the occlusal plane and the second molar
时间窗: One day
Depth of the third molar in mm
Angle of the third molar
时间窗: One day
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)
次要结局
未报告次要终点
研究者
VANDE VANNET Bart
Professor
Central Hospital, Nancy, France