ASYMMETRY INDEX FOR THE PHOTOGRAMMETRIC EVALUATION OF THE DEGREE OF FACIAL ASYMMETRY
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Asymmetry index
研究概览
简要总结
We propose a transversal observational study, to be performed on three-dimensional images acquired through photogrammetry of patients who will undergo orthodontic treatments. The aim of our research consists in the evaluation of facial asymmetry through a graph built on three degrees of Asymmetry Index (symmetry, slight asymmetry, asymmetry) in an Italian population that meets the criteria of absence of craniofacial deformities and that has not undergone surgery or orthodontic treatment.
For the analysis, images acquired via photogrammetry are used, then analyzed with the Geomagic Control 2014 program (64 bit).
详细描述
Facial symmetry is considered one of the most significant factors in the perception of facial attractiveness. A slight degree of asymmetry is common in the human face and often does not require any treatment], as it is camouflaged by the presence of soft tissue, dental compensation or change in head posture .
However, the problem of asymmetry is difficult to manage for the dentist and, in particular, for the orthodontist. In fact, there are many etiological factors related to the development of facial asymmetry and asymmetries that share the same etiology can have different characteristics, as they are influenced by other factors, such as individual growth and compensation.
In fact, at the very moment of the physical examination, it is often not easy to identify the degree of severity of the patient's facial asymmetry. During the clinical examination, dental and skeletal asymmetry can be evaluated: facial asymmetry can be investigated by simple observation of the patient .
However, the aid of instrumental radiological examinations has always been considered the choice for determining the degree of asymmetry.
Orthopantomography is one of the first diagnostic tests that is performed, thanks to its low cost and low radiation dose.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •between the ages of 18 and 40;
- •absence of craniofacial deformities.
排除标准
- •must not have undergone orthodontic treatments in the past;
- •must not have performed orthognathic surgery;
- •must not have suffered facial trauma.
研究组 & 干预措施
stereophotogrammetry of orthodontic patients
To evaluate face asymmetry, the mirroring technique described in the literature by Verhoeven et al. on 16 facial landmarks, defined by Farkas.
Subsequently, the landmarks will be divided into:
- symmetrical (delta between 0-2 mm),
- slightly asymmetrical (delta between 2-4 mm),
- asymmetrical (delta between 4-6 mm).
An asymmetry graph will then be constructed taking into account the asymmetry index described in the literature by Huang et al.
干预措施: stereophotogrammetry (Other)
结局指标
主要结局
Asymmetry index
时间窗: 3 years
construction of a facial asymmetry index useful for distinguishing patients who can be treated with orthodontics from those who need maxillofacial surgery
次要结局
未报告次要终点
研究者
Grippaudo Cristina
associate professor
Fondazione Policlinico Universitario Agostino Gemelli IRCCS