Department of Oral and Maxillofacial Surgery, Ansbach General Hospital, Ansbach, Germany.
Int J Oral Maxillofac Implants. 2013 Jul-Aug;28(4):1132-9. doi: 10.11607/jomi.3009.
The aim of this study was to assess the long-term reliability of Locator-retained mandibular or maxillary overdentures and to examine clinical and radiographic parameters of the supporting implants.
The authors performed a retrospective analysis of a case series. After implant placement and a submerged healing phase of about 3 months, all implants were restored with Locator-retained overdentures. The follow-up examinations included the assessment of the Plaque Index (PI) and sulcus Bleeding Index (SBI) as well as peri-implant soft tissue parameters, such as bleeding on probing (BOP) and pocket probing depth (PPD). The mean marginal bone loss was measured on panoramic radiographs. The clinical performance of Locator components and the prosthetic restoration were evaluated. Descriptive statistics were computed. For statistical analysis, non-parametric and parametric tests with respect to the variable scale were used. The significance level was set as P ≤ .05.
The sample was composed of 33 patients (18 men, 15 women) with a mean age of 66.8 years who received 132 implants (84 in the anterior maxilla, 48 in the anterior mandible). After 32.9 months of follow-up, one maxillary implant was lost. All prosthetic restorations were still functionally in place at the last follow-up appointment with moderate prosthodontic maintenance effort. Clinical parameters and radiographs revealed healthy tissues around most implants.
Within the limitations of this study, it can be concluded that Locators are a predictable alternative for anchorage of mandibular and maxillary overdentures with good clinical performance of both the prosthetic restorations and the supporting implants.
本研究旨在评估Locator 固位下颌或上颌覆盖义齿的长期可靠性，并检查支持种植体的临床和影像学参数。
作者对一项病例系列进行了回顾性分析。植入物放置和大约 3 个月的埋入式愈合期后，所有植入物均用Locator 固位覆盖义齿修复。随访检查包括菌斑指数（PI）和龈沟出血指数（SBI）以及种植体周围软组织参数，如探诊出血（BOP）和探诊袋深度（PPD）。在全景片上测量平均边缘骨丧失量。评估Locator 组件和修复体的临床性能。计算描述性统计数据。对于变量尺度，使用非参数和参数检验进行统计分析。显著性水平设为 P ≤.05。
该样本由 33 名患者（18 名男性，15 名女性）组成，平均年龄为 66.8 岁，共植入 132 枚种植体（84 枚在前上颌，48 枚在前下颌）。随访 32.9 个月后，上颌有一枚种植体脱落。最后一次随访时，所有的修复体仍在功能位置，且有中度的修复体维护需求。临床参数和影像学显示大多数种植体周围组织健康。
在本研究的限制范围内，可以得出结论，Locator 是下颌和上颌覆盖义齿的一种可预测的替代方案，具有良好的临床性能，修复体和支持种植体的性能都很好。
