Shade Evaluation for Clinical Color Change of Discolored Teeth Treated by Bleaching vs Laminate Veneers.
试验速览
- 阶段
- 不适用
- 入组人数
- 1
- 主要终点
- Color change.
研究概览
简要总结
The present study is aimed to evaluation of shade for clinical color change of discolored teeth treated by bleaching vs laminate veneers.
详细描述
Dental aesthetics, including tooth color, is of great importance for majority of the people and any discoloration or staining can affect their quality of life negatively1,2. In the UK it has been reported that 28% of grownups are dissatisfied with the appearance of their teeth and in the USA that 34% of grownups population are dissatisfied with their current tooth color. Moreover, in a survey of 3215 subjects from the UK 50% have admitted that they had some kind of tooth discoloration3,4.
Tooth bleaching has become one of the most popular aesthetic dental treatments. Because tooth bleaching is an effective, non-invasive procedure for the change of tooth discoloration, it is the best of treatment options for improving teeth color 5.
Ceramic restorations with excellent biocompatibility are widely used to achieve highly aesthetic characteristics in fixed prosthodontics6. Porcelain laminate veneers have become a popular method of treated tooth discoloration. But are expensive, brittle and difficult to repair7.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
Single blinded (outcome assessor). Assessors supervisor and co-supervisor will be blinded to the assigned material. However the operator and patient can't be blinded due to the difference in preparation and shade of the ceramic materials and bleaching agent.
- The assessors will assess all outcomes blinded to the material assigned for each patient.
- Three spectrophotometer measurements will be recorded each time, with the active point of the instrument focused on the cervical third of each tooth, then mean color from three measurements will be calculated.
- Digital photograph measures the color of teeth based on the Adobe Photoshop software. (Version 5.5).
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
- •Patients included in this clinical trial :
- •Men and women between 15and 40 years of age.
- •Had good general and oral health.
- •The participants needed to have six vital maxillary or mandibular anterior teeth without caries lesions or restorations.
- •The maxillary canine was shade A3 or darker as judged by comparison with a shade guide (VITA Classical Shade Guide or Spectrophotometer measurement ).
排除标准
- •Participants were excluded from the study
- •If they presented with anterior restorations; had bruxism habits.
- •Were pregnant/lactating; presented with non vital tooth discoloration.
- •were taking any drug with anti-inflammatory, analgesic, or antioxidant effect; or presented with recession and dentin exposure
研究组 & 干预措施
bleaching agent
intervention : bleaching agent ( Boost 40%)
干预措施: Bleaching agent ( BOOST 40%) (Procedure)
laminate veneers
laminate veneers ( monolithic lithium - silicate)
干预措施: laminate veneers(lithium-silicate) (Procedure)
结局指标
主要结局
Color change.
时间窗: 1-4 weeks
measures the change of color before and after intervention by Easy Shade Spectrophotometry
次要结局
- Corresponding color with comparator.(1-4 weeks)
研究者
Hazim sherif ahmed
Dentist
Cairo University