Immediate versus delayed loading of dental implants placed in fresh extraction sockets in the maxillary esthetic zone: a clinical comparative study.
Immediate versus delayed loading of dental implants placed in fresh extraction sockets in the maxillary esthetic zone: a clinical comparative study.
复制标题
上颌美容区新拔牙槽内种植牙的立即负重与延迟负重：一项临床比较研究。
DOI：
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复制
发表时间：
2008
期刊：
影响因子：
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通讯作者：
G. Romanos
中科院分区：
文献类型：
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作者：
R. Crespi;P. Capparé;E. Gherlone;G. Romanos
目的
本研究的目的是报告一个临床比较评估周围的单种植体在新鲜拔牙窝在上颌骨的美学区无论是立即加载或加载后延迟的嵴骨水平的变化。
材料和方法
40例患者被纳入一项前瞻性随机研究。所有患者均需要拔牙1次（即，1颗预后不良的牙齿），并随机分为试验组或对照组。拔牙后立即放置种植体，试验组（20个种植体）立即加载，对照组（20个种植体）3个月后加载。准备种植体部位，种植体顶端下方至少有4 mm的完整根尖骨，种植体的冠状边缘位于骨嵴的颊侧水平。所有种植体长度为13 mm; 30个种植体直径为5 mm，10个直径为3.75 mm。在基线、6个月和24个月时进行放射学检查。为了比较试验组和对照组之间的平均值，进行配对t检验（认为P <0.05时具有统计学显著性）。
结果
在24个月的随访期后，所有种植体的累积存活率均为100%。对照组的平均近中骨丢失为1.16 +/- 0.32 mm，平均远端骨丢失为1.17 +/- 0.41 mm（平均骨丢失为1.16 +/- 0.51 mm）。试验组的近中骨丢失为0.93 +/- 0.51 mm，远端骨丢失为1.1 +/- 0.27 mm（平均骨丢失为1.02 +/- 0.53 mm）。对照组和试验组之间无统计学显著差异（P > 0.05）。
结论
新鲜拔牙窝内种植体即刻复位的成功率和影像学结果与延迟加载组相当。
PURPOSE
The aim of this study was to report a clinical comparative assessment of crestal bone level change around single implants in fresh extraction sockets in the esthetic zone of the maxilla either immediately loaded or loaded after a delay.
MATERIALS AND METHODS
Forty patients were included in a prospective, randomized study. All patients required 1 tooth extraction (ie, 1 tooth with a hopeless prognosis) and were randomized into either the test group or the control group. Implants were positioned immediately after tooth extraction and were loaded immediately in the test group (20 implants) and after 3 months in the control group (20 implants). The implant site was prepared, with at least 4 mm of sound apical bone below the implant apex, and the coronal margin of the implant was placed at the buccal level of the bone crest. All implants were 13 mm long; 30 implants had a diameter of 5 mm, and 10 had a diameter of 3.75 mm. Radiographic examinations were made at baseline, at 6 months, and at 24 months. To compare the mean values between test and control group, a paired t test was performed (considered statistically significant at P < .05).
RESULTS
After a 24-month follow-up period, a cumulative survival rate of 100% was reported for all implants. The control group resulted in a mean mesial bone loss of 1.16 +/- 0.32 mm and a mean distal bone loss of 1.17 +/- 0.41 (mean bone loss, 1.16 +/- 0.51 mm). The test group resulted in a mesial bone loss of 0.93 +/- 0.51 mm and a distal bone loss of 1.1 +/- 0.27 mm (mean bone loss, 1.02 +/- 0.53 mm). No statistically significant difference between control and test groups (P > .05) was found.
CONCLUSION
The success rate and radiographic results of immediate restorations of dental implants placed in fresh extraction sockets were comparable to those obtained in delayed loading group.
DOI：
10.1016/0267-6605(92)90049-y
发表时间：
1992-01-01
期刊：
Clinical Materials
影响因子：
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作者：
BRUNSKI J B
通讯作者：
BRUNSKI J B
即刻负重种植体牙槽嵴骨水平的变化。
DOI：
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发表时间：
2006
期刊：
The International journal of oral & maxillofacial implants.
影响因子：
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作者：
Yoo,RoyH;Chuang,Sung-Kiang;Erakat,MohammedS;Weed,Meghan;Dodson,ThomasB
通讯作者：
Dodson,ThomasB