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相關植體學術文章：
Clinical Evaluation of Laser Microtexturing for Soft Tissue and Bone Attachment to Dental Implants

將具有雷射微溝槽的植體用於臨床評估軟組織和骨頭附著的能力

G. E. Pecora, DDS, MD,* R. Ceccarelli, DDS,* M. Bonelli, DDS,* H. Alexander, PhD,† and J. L. Ricci, PhD‡

出處：IMPLANT DENTISTRY / VOLUME 18, NUMBER 1 2009

介紹：
Introduction

A tapered dental implant (Laser-Lok [LL] surface treatment) with a 2 mm wide collar, that has been laser micromachined in the lower 1.5 mm to preferentially accomplish bone and connective tissue attachment while inhibiting epithelial downgrowth, was evaluated in a prospective, controlled, multicenter clinical trial.

在多管預設對照的臨床實驗中，將2mm植體頸部中下端1.5mm的部分刻上雷射微溝槽，評估其促使骨頭與結締組織附著並抑制上皮組織向下生長的效果。

材料：
Materials

Data are reported at measurement periods from 1 to 37 months postoperative for 20 pairs of implants in 15 patients. The implants are placed adjacent to machined collar control implants of the same design. Measurement values are reported for bleeding index, plaque index, probing depth, and crestal bone loss.

將20對植體植入15個病患身上，對照組的植體頸部2mm為光滑面；並將術後1到37個月的資料紀錄下來。這些測量的資料包含牙齦溝出血指數、牙菌斑指數、探針可插入深度及皮質骨萎縮高度等。

結果：
Results

No statistical differences are measured for either bleeding or plaque index. At all measurement periods there are significant differences in the probing depths and the crestal bone loss differences are significant after 7 months (P < 0.001). At 37 months the mean probing depth is 2.30 mm and the mean crestal bone loss is 0.59 mm for LL versus 3.60 and 1.94 mm, respectively, for control implant. Also, comparing results in the mandible versus those in the maxilla demonstrates a bigger difference(control implant _ LL) in the mean in crestal bone loss and probing depth in the maxilla. However, this result was not statistically significant.

牙齦溝出血及牙菌斑指數測量結果沒有明顯差異。探針可插入深度在全部的測量期間都有明顯的差異，而皮質骨萎縮高度則是在術後第7個月才開始出現顯著差異(P < 0.001)。術後第37個月的測量結果，有雷射微溝槽的植體，探針可插入深度為2.3mm，皮質骨萎縮高度為0.59mm，對照組則為3.6mm及1.94mm。另外，這些數值的差異在上顎比在下顎更大，然而，這個結果並不明顯。

Discussion: 討論
The consistent difference in probing depth between LL and control implant demonstrates the formation of a stable soft-tissue seal above the crestal bone. LL limited the crestal bone loss to the 0.59 mm range as opposed to the 1.94 mm crestal bone loss reported for control implant. The LL implant was found to be comparable with the control implant in safety endpoints plaque index and sulcular bleeding index. There is a nonstatistically significant suggestion that the LL crestal bone retention superiority is greater in the maxilla than the mandible.

從探針可插入深度的差異得知雷射微溝槽植體周圍的皮質骨上方有穩定的軟組織密封保護，因此皮質骨的萎縮為0.59mm，相較對照組的皮質骨就萎縮1.94mm。而牙齦溝出血及牙菌斑指數測量結果沒有明顯差異。此外，建議將雷射微溝槽植體使用在上顎會比下顎效果更明顯。