Intervening Factors in Tooth Color Assessment
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 50
- 试验地点
- 2
- 主要终点
- Tooth color change measured before and after professional dental prophylaxis, assessed with visual shade guide (VITA Toothguide 3D-Master)
研究概览
简要总结
The aim of this study is to evaluate the influence of several factors (light, extrinsic stain removal and operator's experience) in tooth color assessment. Tooth color will be assessed by two different operators with visual shade guides under standardized light conditions and using a light correcting device (Smile Lite) or with a dental spectrophotometer in human subjects. Color measurement will be made before and 1 week after dental prophylaxis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
盲法说明
Neither the patient, the investigator that made the color acquisition or the spectrophotometer had knowledge of tooth color assessed by the other person/method
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Capability to sign the informed consent
- •Presence of upper teeth canines and central incisors, free of tooth decay, dental fillings, endodontic treatment or fixed rehabilitation
- •Tooth color at least A3 in one of the included teeth
- •Teeth should be possible to be subject to tooth color assessment with the predefined methods (color within the visual shade guides range)
- •Absence of fixed orthodontic appliances or severe tooth structure anomalies
排除标准
- •Pregnant patients
- •Patients subjected to professional dental prophylaxis in less than 4 months
结局指标
主要结局
Tooth color change measured before and after professional dental prophylaxis, assessed with visual shade guide (VITA Toothguide 3D-Master)
时间窗: 1 week (measurements before and 1 week after dental prophylaxis)
Tooth color will be determined prior to dental prophylaxis by the investigator and dental spectrophotometer, using visual shade guide VITA Toothguide 3D-Master. 1 week after the intervention, the tooth color will be determined once again with the same protocol.
Tooth color change determined before and after professional dental prophylaxis, assessed with visual shade guide (VITA Classical)
时间窗: 1 week (measurements before and 1 week after dental prophylaxis)
Tooth color will be determined prior to dental prophylaxis by the participant, investigator and spectrophotometer, using visual shade guide VITA Classical. 1 week after the intervention, the tooth color will be determined once again with the same protocol.
Tooth color change in CIELab system measured before and after professional dental prophylaxis
时间窗: 1 week (measurements before and 1 week after dental prophylaxis)
Tooth color in CIELab system will be determined by the conversion of VITA Classical shade guides in CIELab parameters assessed by the participant and investigator and by the spectroshade prior to professional dental prophylaxis. 1 week after the procedure tooth color will be determined once again with the same protocol.
次要结局
- Agreement between operators in tooth color assessment with visual shade guides(Sequencial; repeated before and 1 week after intervention)
- Influence of light conditions in tooth color assessment - change between determination with and without a light correcting device(Sequencial; repeated before and 1 week after intervention)