Evaluation of Patient Satisfaction and Color Difference Between Natural Teeth and Monolithic All-ceramic Crowns Fabricated From Zirconia Reinforced Lithium Silicate Ceramics "Celtra Press" Treated With Different Surface Finishing Protocols.
试验速览
- 阶段
- 不适用
- 入组人数
- 10
- 主要终点
- color match
研究概览
简要总结
investigating the effect of glazing and polishing on the color difference between natural teeth and all ceramic crowns made from celtra press (zirconia reinforced lithium silicate ceramic).
详细描述
Two groups of patients will be selected according to special inclusion criteria N=5 in each group total of 10 patients, one of the two groups will receive a glazed zirconia reinforced lithium silicate ''celtra press'' crowns and the other group will receive a polished ones of the same material , after crowns delivery color difference (ΔE) between the natural teeth and the celtra press crown will be measured by a spectrophotometer device (intra oral) and patient satisfaction will be recorded.
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
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 20 Years 至 45 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age range of the patients from 20-45 years old; able to read and sign the informed consent document, illiterate patient will be avoided.
- •Patients able physically and psychologically to tolerate conventional restorative procedures.
- •Patients with no active periodontal or pulpal diseases, having teeth with good restorations.
- •Patients with teeth problems indicated for full coverage restoration ( coronal fracture where partial coverage would lack retention, malposed or malformed teeth).
- •Patients with root canal treated teeth requiring full coverage restorations with contralatral tooth not filled or fractured.
- •Patients willing to return for follow-up examinations and evaluation.
排除标准
- •Patients in the growth stage with partially erupted teeth.
- •Patients with poor oral hygiene and motivation.
- •Pregnant women's to avoid any complication that may occur in dental office due to pregnancy or due to injected anesthetic solution.
- •Patients with psychiatric problems or unrealistic expectation
- •Deep discoloration of abutment .
研究组 & 干预措施
polished celtra press full coverage crowns
a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by just polishing
干预措施: polished celtra press full coverage crown (Other)
glazed celtra press full coverage crowns
a full coverage crown in esthetic area made from celtra press ceramic( zirconia reinforced lithium silicate) and finished by glazing
干预措施: glazed celtra press full coverage crowns (Other)
contralateral natural teeth
the poilshed and glazed all ceramic crowns will be compared by the contralateral natural teeth
干预措施: contralateral natural teeth (Other)
结局指标
主要结局
color match
时间窗: immediately after crown delivery
Color match will be measured using "United states pulplic health service " system . Scale system : * Alpha : Excellent colour match and shade between restoration and adjacent tooth, restoration almost invisible * Bravo : Slightly mismatching between the restoration and the adjacent tooth, which is in the normal range of tooth colour, translucence, and/or shade * Charlie : Obvious mismatch, beyond the normal range * Delta : Gross mismatch/aesthetically displeasing colour, shade, and/or translucence
次要结局
- Color difference(immediately after crown delivery)
研究者
Nurhan Sayed Saleh Ahmed
Principal investigator - Fixed prosthodontic department, faculty of oral and dental medicine
Cairo University