ATTACHMENTS USED FOR IMPLANT-RETAINED MANDIBULAR OVERDENTURES

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 虽然强有力的证据已经证实假体固位量是患者满意度的重要因素，但种植附着体系统的特定固位力对患者满意度的影响却知之甚少。Locator附着体系统有三种不同的固位强度，广泛用于固定下颌种植义齿。这项受试者内交叉研究旨在考察患者对三种不同固位强度的Locator附着体的满意度，以稳定下颌种植覆盖义齿。40名计划使用Locator附着体系统接受种植体固位下颌覆盖义齿的患者将参与这项研究。采用随机分布，每个患者的假体将按顺序安装三种定位器附着体固位强度，每种固位强度为期一个月。患者对现有修复体和种植覆盖义齿使用不同固位锚固强度的满意度将在不同的时间点通过相同的问卷获得。种植体相对于咬合平面的角度，以及假体的稳定性和固位性，将由一名检查员进行评估，并与患者的反应相关。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Although strong evidence has confirmed that the amount of prosthesis retention is an important factor for patient satisfaction, little is known about the impact of specific retentive strengths of implant attachment systems on patient satisfaction. The Locator attachment system is available in three different retentive strengths and is widely used to stabilize implant-retained overdentures in the mandible. This within-subject crossover study was designed to examine patient satisfaction with three different retentive strengths of the Locator attachment to stabilize implant-retained overdentures in the mandible. Forty patients scheduled to receive implant-retained mandibular overdentures using the Locator attachment system will participate in this study. Using a random distribution, each patient's prosthesis will be sequentially fitted with each of three Locator attachment retentive strengths, each for a period of one month. Patients' satisfaction with the existing prosthesis and with the implant-retained overdenture using different retentive anchor strengths will be obtained at various time points using identical questionnaires. The implants' angulation in reference to the occlusal plane, as well as the stability and retention of the prosthesis, will be evaluated by one examiner and correlated to the patients' responses.