Doctoral student, Faculty of Dentistry, McGill University, Montreal, Quebec, Canada; and Lecturer, Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
Associate Dean of Knowledge Transfer and Internationalization and Associate Professor, Department of Restorative Dentistry, Department of Social and Preventive Medicine, Faculty of Dentistry, School of Public Health, University of Montreal, Montreal, Quebec, Canada.
J Prosthet Dent. 2018 Apr;119(4):560-567.e1. doi: 10.1016/j.prosdent.2017.04.021. Epub 2017 Jul 11.
Clinical data regarding newly introduced laser-sintered removable partial dentures (RPDs) are needed before this technique can be recommended. Currently, only a few clinical reports have been published, with no clinical studies.
This clinical trial compared short-term satisfaction in patients wearing RPDs fabricated with conventional or computer-aided design and computer-aided manufacturing (CAD-CAM) laser-sintering technology.
Twelve participants with partial edentulism were enrolled in this pilot crossover double-blinded clinical trial. Participants were randomly assigned to wear cast or CAD-CAM laser-sintered RPDs for alternate periods of 30 days. The outcome of interest was patient satisfaction as measured using the McGill Denture Satisfaction Instrument. Assessments was conducted at 1, 2, and 4 weeks. The participant's preference in regard to the type of prosthesis was assessed at the final evaluation. The linear mixed effects regression models for repeated measures were used to analyze the data, using the intention-to-treat principle. To assess the robustness of potential, incomplete adherence, sensitivity analyses were conducted.
Statistically significant differences were found in patients' satisfaction between the 2 methods of RPD fabrication. Participants were significantly more satisfied with laser-sintered prostheses than cast prostheses in regard to general satisfaction, ability to speak, ability to clean, comfort, ability to masticate, masticatory efficiency, and oral condition (P<.05). At the end of the study, 5 participants preferred the laser-sintered, 1 preferred the cast RPD, and 3 had no preference.
The use of CAD-CAM laser-sintering technology in the fabrication of removable partial dentures may lead to better outcomes in terms of patient satisfaction in the short term. The conclusion from this pilot study requires confirmation by a larger randomized controlled trial.
ClinicalTrials.gov. A study about patient satisfaction with laser-sintered removable partial dentures; NCT02769715.
在推荐这种技术之前，需要有关于新引入的激光烧结可摘局部义齿（RPD）的临床数据。目前，只有少数临床报告发表，没有临床研究。
本临床试验比较了使用传统或计算机辅助设计和计算机辅助制造（CAD-CAM）激光烧结技术制作的 RPD 短期佩戴患者的满意度。
本试点交叉双盲临床试验纳入了 12 名部分牙列缺失的参与者。参与者随机分配佩戴铸造或 CAD-CAM 激光烧结 RPD，交替佩戴 30 天。感兴趣的结果是使用 McGill 义齿满意度量表测量的患者满意度。在 1、2 和 4 周进行评估。在最终评估时评估患者对义齿类型的偏好。使用重复测量的线性混合效应回归模型分析数据，采用意向治疗原则。为了评估潜在的不完全依从性的稳健性，进行了敏感性分析。
两种 RPD 制作方法的患者满意度存在统计学显著差异。在总体满意度、说话能力、清洁能力、舒适度、咀嚼能力、咀嚼效率和口腔状况方面，患者对激光烧结义齿的满意度明显高于铸造义齿（P<.05）。研究结束时，5 名参与者更喜欢激光烧结义齿，1 名更喜欢铸造 RPD，3 名没有偏好。
在制作可摘局部义齿时使用 CAD-CAM 激光烧结技术可能会在短期内提高患者的满意度。这项初步研究的结论需要更大的随机对照试验来证实。
ClinicalTrials.gov。一项关于激光烧结可摘局部义齿患者满意度的研究；NCT02769715。
