Digital Evaluation of the Accuracy of Final Impressions Recorded by Three Different Techniques for Severely Resorbed Complete Mandibular Ridges: An In Vivo Crossover Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 8
- 试验地点
- 1
- 主要终点
- 3D deviation (RMS) between final impression scans
研究概览
简要总结
This in vivo crossover study aims to compare the accuracy of three different final impression techniques for severely resorbed mandibular ridges in completely edentulous patients. The accuracy of the impressions will be evaluated digitally using three-dimensional scanning and deviation analysis to determine differences among the impression techniques.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Other
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- 未提供
排除标准
- •Inclusion Criteria:
- •Completely edentulous patients with severely resorbed mandibular ridges.
- •Patients requiring a mandibular complete denture.
- •Patients able to tolerate the impression procedures and attend the required study visits.
- •Patients willing to participate in the study and provide informed consent.
- •Exclusion Criteria:
- •Patients with systemic or local conditions that contraindicate conventional dental impression procedures.
- •Patients with pathological lesions or significant abnormalities affecting the mandibular denture-bearing area.
- •Patients unable to tolerate or cooperate with the impression procedures.
- •Patients who decline to participate or withdraw their informed consent. -
研究组 & 干预措施
Convensional final impression
Conventional final impression technique using alginate impression material followed by zinc oxide eugenol (ZOE) impression material.
干预措施: Conventional final impression (Procedure)
Wax impression technique
Wax impression technique using a wax impression followed by alginate impression material.
干预措施: Wax impression technique (Procedure)
compound impression technique
Wash compound impression technique using a low-fusing impression compound wash followed by alginate impression material.
干预措施: Compound impression technique (Procedure)
结局指标
主要结局
3D deviation (RMS) between final impression scans
时间窗: Immediately after each final impression was recorded
The accuracy of the final impression techniques was assessed by three-dimensional deviation analysis of the impression scans using Geomagic Control software. Root Mean Square (RMS) deviation was calculated by comparing the scans obtained using the different impression techniques.
次要结局
未报告次要终点
研究者
Nashwa ali saleh
Lecturer of Prosthodontics
Tanta University