Marginal Adaptation of E.Max Laminate Veneers Prepared With Modified Gull Wing Preparation and Conventional Preparation
试验速览
- 阶段
- 不适用
- 入组人数
- 38
- 主要终点
- measuring marginal adaptation of laminates veneers using stero-microscope
研究概览
简要总结
The aim of this study is to evaluate tooth sensitivity and marginal adaptation of porcelain laminates veneers prepared with modified gull wing preparation and conventional preparation.
详细描述
Visit 1: Preoperative records, face-to-face adherence reminder session, clinical, radio-graphic examination and primary impression for diagnostic cast construction.
Visit 2: Teeth preparation, secondary impression,temporary restoration and teeth sensitivity evaluation using United States Public Health Service criteria.
Visit 3: Placement and permanent cementation of the final restoration
Visit 4: marginal adaptation measurement by electron microscope using impression replica.
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 (Investigator)
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
- •From 18-40 years old, be able to read and sign the informed consent document.
- •Be physically and psychologically able to tolerate conventional restorative Procedures.
- •Have no active periodontal or pulpal diseases, have teeth with good restorations.
- •Patients with teeth problems indicated for laminate veneer (e.g:discoloration, fracture not involve more than 50% enamel loss, mild malposition.
- •Be willing to return for follow-up examinations and evaluation.
排除标准
- •Patients in the growth stage with partially erupted teeth.
- •Patient with fractured teeth of more than 50% enamel loss.
- •Patients with poor oral hygiene and motivation.
- •Pregnant women.
- •Patient with post and core endodontically treated teeth.
- •Psychiatric problems or unrealistic expectations.
- •Lack of opposite occluding dentition in the area intended for restoration
研究组 & 干预措施
gull wing preparation veneers
intervention: gull wing preparation in laminates veneers proximal margin of the preparation is placed toward the lingual .The area of the proximal margin between the contact area and the gingival papilla is placed even further to the lingual. This preparation design helps to hide the margin when the restorations are viewed from an angle.
干预措施: gull wing preparation of laminates veneers (Procedure)
conventional preparation veneers
intervention: conventional preparation in laminates veneers preparation of veneers without lingual extension of preparation in mesial and distal areas
干预措施: conventional preparation of laminates veneers (Procedure)
结局指标
主要结局
measuring marginal adaptation of laminates veneers using stero-microscope
时间窗: immediately before laminates delivery up to 4 week sfter tooth preparation
marginal adaptation of laminates veneers will be assess as follows, before laminates cementation, an impression material will be placed in the fitting surface of the veneers and placed over the reduced tooth using finger pressure, after material set the impression replica is separated from the laminates and the replica is section and measures under stero-microscope for marginal adaptation, measurement will be performed in eight different points on the buccal and mesio-distal sections, measurement will be in micrometer.
次要结局
- measuring tooth sensitivity after tooth preparation for laminates veneers(one week after tooth preparation)
研究者
Housham nabiel hassan musa
principal investigator
Cairo University