Third Molar Agenesis Related To Craniofacial Pattern And Sella Turcica Bridging: A Retrospective Cephalometric Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 400
- 试验地点
- 1
- 主要终点
- Linear regression between third molar agenesis and Interclinoid Distance
研究概览
简要总结
The aim of this retrospective study is to analyze the third molar agenesis with respect to sella turcica bridging and other craniofacial patterns in patients asking for orthodontic consultation. The main question[s] it aims to answer are:
- is there a relationship between third molar agenesis and sella turchina bridging?
- is there a relationship between third molar agenesis and craniofacial patterns?
详细描述
Patients referring for orthodontic consultation at the Unit of Orthodontics and Pediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy, will be enrolled for the study according to the inclusion criteria. For each patient, lateral cephalometric radiograph and panoramic radiograph will be performed. For each lateral cephalometric radiograph, a cephalometric tracing will be performed with DeltaDent software (version 2.5.12, Outside Format, Pandino, Italy). Riedel's ANB angle [Riedel 1952] has been chosen to determine patients' skeletal class. Steiner's SN^GoGn angle [Steiner 1953] has been chosen to evaluate skeletal divergence. Facial axis (BaNa^CCGn), Lower Facial Height (LFH) and mandibular plan angle (FH^GoMe) from Rickett's analysis [Rickett's 1961] have been adopted to determine facial growth. According to Jaraback's cephalometric analysis [Jaraback 1985], saddle angle, articular angle, upper gonial angle, lower gonial angle will be measured to assess the growth pattern. Linear measurements of sella depth, sella diameter and interclinoid distance [Silverman 1957; Kisling 1966] will be calculated. Linear regressions between craniofacial patterns, sella turcica bridging and third molar agenesis will be calculated. A control group with no third molar agenesis will be provided.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 8 Years 至 18 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •G stage of Demirjian's classification for third molar maturation or absence of third molar germs
- •Patients with one lateral cephalometric digital radiograph executed in Natural Head Position (patients were asked to keep the teeth in contact and the lips relaxed).
- •Patients with panoramic radiograph;
排除标准
- •Ascertained previous surgical extraction/s of third molar/s
- •Orthopedic/orthodontic therapy
- •Orthognathic surgery.
结局指标
主要结局
Linear regression between third molar agenesis and Interclinoid Distance
时间窗: Baseline
Distance between tuberculum sella (TS) and dorsum sella (DS).
Linear regression between third molar agenesis and Sn^GoGn.
时间窗: Baseline
Steiner's Sn\^GoGn is the angle formed between 2 planes: cranial base line (SN) and mandibular plane (GoGn)
Linear regression between third molar agenesis and ANB
时间窗: Baseline
ANB is calculated according to Riedel's analysis: angle formed between Point A (maxillary sovraspinal point), point B (Bubmental mandibular point) and N (Nasion)
Linear regression between third molar agenesis and Sella Depth.
时间窗: Baseline
Distance of a line dropped perpendicular from the interclinoid distance to the deepest point of the sella floor.
Linear regression between third molar agenesis and Sella Diameter
时间窗: Baseline
Distance between tuberculum sella and the farthest point on the inner wall of the sella.
Linear regression between third molar agenesis and ArGo^GoGn
时间窗: Baseline
Jaraback's Ar\^Go\^Gn is the angle formed between the 2 planes: ArGo and GoGn
次要结局
未报告次要终点
研究者
Andrea Scribante
Associate Professor, Principal Investigator
University of Pavia