ATTACHMENTS USED FOR IMPLANT-RETAINED MANDIBULAR OVERDENTURES

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可以在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 尽管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，但关于种植体附着系统的特定固位强度对患者满意度的影响知之甚少。 种植体附着体系统有三种不同的固位强度，广泛用于稳定下颌种植体固位覆盖义齿。 这项受试者内交叉研究旨在检查患者对三种不同固位强度的种植体附着体稳定下颌种植体固位覆盖义齿的满意度。 40例计划接受种植体固位下颌覆盖义齿使用的种植体附着系统将参与这项研究。 使用随机分布，将依次为每位患者的假体安装三种附着体固位强度中的每一种，每种持续一个月。 使用相同的问卷，在不同的时间点获得患者对现有修复体和使用不同固位锚强度的种植体固位覆盖义齿的满意度。 种植体相对于咬合平面的角度以及修复体的稳定性和固位力将由一名检查员进行评估，并与患者的反应相关联。

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.