Faculty of Medicine and Dentistry, Master's program in Oral Surgery and Implant Dentistry, Stomatology Department, University of Valencia, Valencia, Spain.
Clin Oral Implants Res. 2018 Apr;29(4):367-374. doi: 10.1111/clr.13131. Epub 2018 Feb 16.
To evaluate the effect of incision design in implant surgery on interproximal bone loss of posterior teeth adjacent to interdental single implants, comparing intrasulcular and paramarginal incision. A further aim was to assess the influence of the incision technique on peri-implant bone remodeling.
A controlled randomized clinical trial was carried out in a University Clinic. All the patients received an interdental posterior single implant. The incision type was randomly divided into two groups: (a) intrasulcular or (b) paramarginal. Standardized periapical digital radiographs were made with the parallel technique and a silicone index individualized in each patient. Radiographs were made immediately after implant placement, at abutment connection, 6 and 12 months post-loading. Two radiographic reference points were detected at the interproximal aspect of the adjacent teeth: (A) the cementoenamel junction and (B) the most coronal aspect of the bone crest. The interproximal bone loss of the adjacent teeth was calculated as the difference from A to B between the different follow-up periods and baseline. Two different examiners evaluated the radiographic measurements twice.
Sixty patients, each with one implant, were included, 30 in each group. A mean interproximal bone loss in teeth of 0.09 mm in the intrasulcular and 0.10 mm in the paramarginal group was found at 12 months post-loading. Mean peri-implant bone remodeling was 0.17 mm in the intrasulcular group and 0.15 mm in the paramarginal group. Differences between incision types were not statistically significant (p > .05).
Both incision designs used to place interdental single implants resulted in minimum bone loss at the interproximal aspect of adjacent teeth. The incision design did not significantly influence the radiographically assessed interproximal bone loss nor peri-implant bone remodeling.
评估种植术中切口设计对邻牙间单牙种植体近中骨丢失的影响，比较沟内切口和边缘切口。进一步的目的是评估切口技术对种植体周围骨重塑的影响。
在一所大学诊所进行了一项对照随机临床试验。所有患者均接受邻牙间后牙单牙种植。切口类型随机分为两组：（a）沟内或（b）边缘。采用平行技术和每位患者个体化的硅橡胶指数制作标准根尖数字射线照片。植入物放置后、基台连接后、负荷后 6 个月和 12 个月时立即拍摄放射照片。在邻牙近中面检测两个放射学参考点：（A）牙骨质-釉质交界和（B）牙槽嵴最冠方。相邻牙齿的近中骨丢失被计算为不同随访期和基线之间从 A 到 B 的差值。两名不同的检查者两次评估放射学测量值。
共纳入 60 名患者，每位患者植入一颗种植体，每组 30 名。负荷后 12 个月，沟内组的邻牙近中骨丢失平均为 0.09mm，边缘组为 0.10mm。沟内组的种植体周围骨重塑平均为 0.17mm，边缘组为 0.15mm。两种切口类型之间的差异无统计学意义（p>.05）。
用于放置邻牙间单牙种植体的两种切口设计均导致相邻牙齿近中面最小的骨丢失。切口设计对影像学评估的近中骨丢失和种植体周围骨重塑没有显著影响。
