Platform switch versus platform match in the posterior mandible – 1-year results of a multicentre randomized clinical trial.
Platform switch versus platform match in the posterior mandible – 1-year results of a multicentre randomized clinical trial.
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DOI：
10.1111/jcpe.12244
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发表时间：
2014-05
影响因子：
6.7
通讯作者：
Nicolau P
中科院分区：
文献类型：
--
作者：
Guerra F;Wagner W;Wiltfang J;Rocha S;Moergel M;Behrens E;Nicolau P
这项正在进行的随机研究的目的是评估骨水平变化和成功率的差异，使用种植体支持单冠在下颌后骨与平台匹配或平台转换基台。入选患者年龄在18岁及以上，下颌后牙缺失至少两颗牙齿，并且在最近端种植体部位近中有一颗天然牙齿。种植体植入后随机分组。在最少8周的穿龈愈合期后放置连续性牙周炎。X线片测量了从手术和负重（基线）到负重后12个月的牙槽嵴水平变化。确定植入物存活率和成功率。68名患者在平台转换组中接受了74个植入物，另一组中接受了72个植入物。从手术到12个月的平均边缘骨水平变化组间差异显著（p < 0.004）。67.1%的平台转换和49.2%的平台匹配种植体的X线片平均骨增量或无骨丢失。植入成功率分别为97.3%和100%。在相同的种植体系统中，与平台匹配的种植体相比，平台转换概念对边缘骨水平有积极影响。
The purpose of this ongoing randomized study was to assess differences in bone level changes and success rates using implants supporting single crowns in the posterior mandible either with platform matched or platform switched abutments. Patients aged 18 and above, missing at least two teeth in the posterior mandible and with a natural tooth mesial to the most proximal implant site were enrolled. Randomization followed implant placement. Definitive restorations were placed after a minimum transgingival healing period of 8 weeks. Changes in crestal bone level from surgery and loading (baseline) to 12-month post-loading were radiographically measured. Implant survival and success were determined. Sixty-eight patients received 74 implants in the platform switching group and 72 in the other one. The difference of mean marginal bone level change from surgery to 12 months was significant between groups (p < 0.004). Radiographical mean bone gain or no bone loss from loading was noted for 67.1% of the platform switching and 49.2% of the platform matching implants. Implant success rates were 97.3% and 100%, respectively. Within the same implant system the platform switching concept showed a positive effect on marginal bone levels when compared with restorations with platform matching.
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影响因子：
4.3
作者：
Åstrand, P;Engquist, B;Feldmann, H
通讯作者：
Feldmann, H
影响因子：
4.6
作者：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
Schwarz, Frank