Early function of splinted implants in maxillas and posterior mandibles using Brånemark system machined-surface implants: an 18-month prospective clinical multicenter study.
Early function of splinted implants in maxillas and posterior mandibles using Brånemark system machined-surface implants: an 18-month prospective clinical multicenter study.
复制标题
使用 Brånemark 系统加工表面种植体在上颌骨和后下颌骨中夹板种植体的早期功能：一项为期 18 个月的前瞻性临床多中心研究。
DOI：
10.1111/j.1708-8208.2003.tb00012.x
复制
发表时间：
2004
影响因子：
3.6
通讯作者：
B. Rangert
中科院分区：
文献类型：
--
作者：
L. Vanden Bogaerde;G. Pedretti;P. Dellacasa;M. Mozzati;B. Rangert
背景
在下颌骨和上颌骨后部植入即刻或早期加载种植体的临床数据有限。这可能是因为这些区域的骨密度通常较低，因此难以建立良好的初始植入物稳定性。然而，通过消除埋头孔并使用略微锥形的种植体（Brånemark系统，Mk IV，Nobel Biocare AB，哥德堡，瑞典），可以在这些区域实现较高的初始种植体稳定性。
目的
本研究的目的是调查在骨密度通常较低的口腔部位（即上颌骨和下颌后骨）早期应用种植体功能的可能性。
材料和方法
连续纳入31例患者，治疗了36个上颌骨和下颌后牙列缺失区域。所有患者均为非吸烟者，总体健康状况良好。磨牙症和未控制的牙周病是排除标准。使用至少40 Ncm的插入扭矩放置了124个机加工表面种植体。具有狭窄咬合平台、扁平尖和轻度咬合接触的临时修复体通常在种植体放置后1周内放置，不超过20天。
结果
在安装的124个种植体中，4个失败，4名患者各1个，18个月后的总生存率为96.8%。两个种植体在上颌骨和下颌骨失败。上颌骨和下颌骨中的一个种植体在早期丢失，另外两个种植体在放置后几个月丢失。假体的存活率为100%。
结论
这项研究表明，早期种植功能康复的上颌和下颌后牙是可行的，使用目前的临床协议。结果与传统的两阶段协议。
BACKGROUND
There are limited clinical data available for immediately or early loaded implants placed in posterior mandibles and maxillas. This is probably because bone density often is low in these areas, making it difficult to establish good initial implant stability. By eliminating countersinking and using slightly tapered implants (Brånemark System , Mk IV, Nobel Biocare AB, Gothenburg, Sweden), however, high initial implant stability might be achieved in these regions.
PURPOSE
The aim of this study was to investigate the possibility of early application of implant function in oral locations where the bone density is often low, namely the maxilla and posterior mandible.
MATERIALS AND METHODS
Thirty-one patients were included consecutively in the study, and 36 edentulous areas in maxillas and posterior mandibles were treated. All patients were nonsmokers in good general health. Bruxism and uncontrolled periodontal disease were exclusion criteria. One hundred twenty-four machined-surface implants were placed using an insertion torque of at least 40 Ncm. Temporary prostheses with narrow occlusal platforms, flat cusps, and light occlusal contacts were generally placed within 1 week and not exceeding 20 days from implant placement.
RESULTS
Of the 124 implants installed, 4 failed, 1 in each of four patients, giving an overall survival rate of 96.8% after 18 months. Two implants failed in maxillas and two in mandibles. One implant in a maxilla and one in a mandible were lost in an early stage, and the other two were lost a few months after placement. The prostheses' survival was 100%.
CONCLUSIONS
This study shows that early implant function rehabilitation in maxillas and posterior mandibles is viable using the present clinical protocol. The results are comparable with those of conventional two-stage protocols.