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首页> 外文期刊>The International journal of oral & maxillofacial implants >Implant survival in maxillary and mandibular osseous onlay grafts and native bone: a 3-year clinical and computerized tomographic follow-up.
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Implant survival in maxillary and mandibular osseous onlay grafts and native bone: a 3-year clinical and computerized tomographic follow-up.

机译：上颌和下颌骨植入物和天然骨中的植入物存活：3年临床和计算机断层摄影随访。

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PURPOSE: This article discusses a 3-year retrospective survey of implant clinical survival and computerized tomographic analysis of bone remodeling in atrophic alveolar crests reconstructed via various autogenous bone grafting procedures and in similar regions of native bone. MATERIALS AND METHODS: The retrospective chart review included consecutive edentulous patients with severe alveolar crest atrophy treated between 2000 and 2002 with onlay autogenous bone grafts in the mandible and anterior maxilla (as needed) and implant insertion. Implant recipients were followed for 3 years. Defective areas were reconstructed by bone graft harvested from the chin or iliac crest. Implants in reconstructed areas were divided into two groups according to graft source. Implants in corresponding native areas served as controls. Cumulative survival rate (CSR), survival rate, and confidence interval (CI) were calculated, and linear measurements of bone remodeling around implants were assessed on computerized tomographic scans. Results were compared for statistically significant differences by Wilcoxon signed-rank test with a significance level a = .05. RESULTS: Forty patients were treated with 109 screw-type, root-form, rough-surfaced implants inserted in 48 onlay grafts; 88 implants were placed in native bone. The implant 3-year CSRs were 98.9% (CI 96.7% to 100%) in native bone and 99.1% (CI 97.3% to 100%) in onlay grafts, irrespective of bone source. Mean resorption in the maxilla was 4.6 +/- 0.9 mm buccally and 3.8 +/- 0.8 mm palatally in areas reconstructed with chin grafts, 3.4 +/- 1.7 mm buccally and 2.6 +/- 1.4 mm palatally in areas reconstructed with iliac crest grafts, and 3.2 +/- 1.2 mm buccally and 2.1 +/- 0.9 mm palatally in native areas. CONCLUSIONS: Similar implant CSRs were seen in native and grafted sites. Maximal implant CSR was observed in onlay grafts from the chin despite more marked linear bone remodeling in this group as compared to iliac crest grafts or native bone.
机译：目的：本文讨论了一项为期三年的回顾性调查，研究了通过各种自体骨移植程序以及在天然骨的类似区域重建的萎缩性牙槽rest的植入物临床存活率和计算机断层摄影术的骨重塑。材料与方法：回顾性图表回顾包括2000年至2002年间连续的无牙的严重牙槽rest萎缩患者，并在下颌骨和前上颌骨上植入了自体骨移植物（根据需要）并植入了植入物。对植入物接受者进行了3年的随访。通过从下巴或骨收获的骨移植物重建缺损区域。根据移植物来源，将重建区的植入物分为两组。在相应原生区域的植入物作为对照。计算累积生存率（CSR），生存率和置信区间（CI），并在计算机断层扫描中评估植入物周围骨重塑的线性测量。通过Wilcoxon符号秩和检验比较结果的统计学显着性差异，显着性水平a = .05。结果：40例患者接受了109枚螺钉型，根形，表面粗糙的植入物治疗，这些植入物插入了48个植入式移植物中。将88个植入物放置在天然骨中。无论骨来源如何，植入物的3年CSR在天然骨中为98.9％（CI为96.7％至100％），在嵌体移植物中为99.1％（CI为97.3％至100％）。在用下巴移植物重建的区域中上颌的平均吸收为4.6 +/- 0.9 mm，在lat骨中的平均吸收为3.8 +/- 0.8 mm，在用骨移植物重建的区域中，颊侧为3.4 +/- 1.7 mm和2.6 +/- 1.4 mm ，在自然区域的颊侧为3.2 +/- 1.2毫米，lat骨为2.1 +/- 0.9毫米。结论：在天然和嫁接部位均观察到相似的植入物CSR。尽管与c骨or骨或天然骨相比，该组lay骨的骨重塑更为明显，但在下巴的lay骨移植中仍观察到最大的种植体CSR。

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