种植体支持可摘局部义齿的应力中断附着体的临床评估。
Clinical Evaluation of Implant-Supported Removable Partial Dentures With a Stress-Breaking Attachment.
机构信息
*Associate Professor, Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan; Implant Center, Tsurumi University School of Dental Medicine, Yokohama, Japan. †Instructor, Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan. ‡Assistant Professor, Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan. §Professor, Department of Removable Prosthodontics, Tsurumi University School of Dental Medicine, Yokohama, Japan; Implant Center, Tsurumi University School of Dental Medicine, Yokohama, Japan.
出版信息
Implant Dent. 2017 Aug;26(4):516-523. doi: 10.1097/ID.0000000000000592.
PURPOSE
The stress-breaking ball (SBB) attachment can distribute the occlusal force equally between the alveolar ridge and the implants. The purpose of this study was to evaluate the implant-supported distal extension removable partial dentures (RPDs) with SBB attachment in 10 patients who were partially edentulous.
METHODS
This randomized crossover study was designed to compare the function of RPDs with and without healing abutments and SBB attachments to support the posterior aspects of the RPDs. Mandibular jaw movements during mastication and the occlusal force and contact area were measured with a commercially available tracking device and pressure-sensitive sheets. Using a visual analog scale, 4 criteria-chewing, retention, stability, and comfort-were evaluated. All of the data obtained were analyzed using a 1-way analysis of variance (α = 0.05).
RESULTS
There were no significant differences in either the mean time or the coefficient of variation among the SBB attachments and healing abutments of implant-supported removable partial dentures (ISRPDs) and conventional removable partial dentures (CRPDs). SBB attachments and healing abutments of ISRPDs had greater forces and contact areas than those of CRPDs with significant differences. For all criteria, patients preferred SBB attachments to healing abutments and CRPDs.
CONCLUSIONS
The implant-supported distal extension RPDs with SBB attachment improved denture stability and patients' satisfaction.
目的
应力中断球（SBB）附着体能在牙槽嵴和种植体之间均匀分布咬合力。本研究的目的是评估 10 名部分缺牙患者中带有 SBB 附着体的种植体支持的远中游离端可摘局部义齿（RPD）的功能。
方法
本随机交叉研究旨在比较带有和不带有愈合基台和 SBB 附着体的 RPD 支持 RPD 后牙区的功能。使用市售的跟踪装置和压敏片测量咀嚼过程中的下颌运动以及咬合力和接触面积。使用视觉模拟评分法评估 4 个标准-咀嚼、固位、稳定性和舒适度。使用单向方差分析（α=0.05）对所有获得的数据进行分析。
结果
种植体支持的可摘局部义齿（ISRPD）和传统可摘局部义齿（CRPD）的 SBB 附着体和愈合基台的平均时间和变异系数之间均无显著差异。ISRPD 的 SBB 附着体和愈合基台的力和接触面积均大于 CRPD，差异有统计学意义。对于所有标准，患者更喜欢 SBB 附着体而不是愈合基台和 CRPD。
结论
带有 SBB 附着体的种植体支持的远中游离端 RPD 可提高义齿稳定性和患者满意度。
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