Preliminary study of clinical outcomes for single implant-retained mandibular overdentures
Preliminary study of clinical outcomes for single implant-retained mandibular overdentures
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DOI：
10.2334/josnusd.19-0079
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发表时间：
2020-01-01
影响因子：
1.9
通讯作者：
Minakuchi, Shunsuke
中科院分区：
文献类型：
--
作者：
Asami, Mari;Kanazawa, Manabu;Minakuchi, Shunsuke
本研究评价了与带有定位附着体的单个种植体固位下颌覆盖义齿（1-IODs）相关的边缘骨丢失和修复并发症。在22例无牙颌患者中，使用传统的加载方案将1-IOD放置在下颌正中线上。通过影像学和牙槽骨评估评估在开始加载时和术后12个月的边缘骨丢失。牙槽嵴定义为定制基台肩与骨顶部之间的距离，如探测所示。此外，还记录了种植体稳定系数和假体并发症。累积种植体存活率为95.5%。中位种植体稳定商保持大于80，中位影像学骨丢失为0.56 mm。牙槽嵴测量显示颊侧、右侧、舌侧和左侧的中位牙槽嵴骨丢失分别为0.16、0.43、0.39和0.52 mm。在种植体加载开始和术后12个月之间，放射学和牙槽嵴骨丢失值均存在显著差异（颊侧和舌侧除外; P < 0.05）。需要更换尼龙内衬是最常见的并发症。1-IOD与定位器附件的传统负载导致了较高的存活率、良好的种植体稳定性和可接受的边缘骨丢失。
This study evaluated marginal bone loss and prosthetic complications associated with single implant-retained mandibular overdentures (1-IODs) with locator attachments. The 1-IOD was placed in the mandibular midline by using a conventional loading protocol in 22 patients with an edentulous mandible. Marginal bone loss at the start of loading and 12 months postoperatively was assessed by radiographic and crestal bone evaluation. The crestal bone was defined as the distance between the customized abutment shoulder and the top of the bone, as indicated by probing. In addition, implant stability quotient and prosthetic complications were recorded. The cumulative implant survival rate was 95.5%. Median implant stability quotient remained greater than 80, and median radiographic bone loss was 0.56 mm. Crestal measurement showed a median crestal bone loss of 0.16, 0.43, 0.39, and 0.52 mm on the buccal, right, lingual, and left sides, respectively. Both radiographic and crestal bone loss values significantly differed between the start of implant loading and 12 months postoperatively (except on the buccal and lingual sides; P < 0.05). The need to replace the nylon insert was the most common complication. Conventional loading of a 1-IOD with a locator attachment resulted in a high survival rate, good implant stability, and acceptable marginal bone loss.