Viganò Paolo, Apaza Alccayhuaman Karol A, Sakuma Shigeru, Amari Yoshiyuki, Bengazi Franco, Botticelli Daniele
Ariminum Research & Dental Education Center, ARDEC Academy, Rimini, Italy.
Department of oral surgery, Faculty of Dentistry, University of Medical Science, La Habana, Cuba.
J Investig Clin Dent. 2019 Feb;10(1):e12378. doi: 10.1111/jicd.12378. Epub 2018 Nov 25.
The aim of the present study was to evaluate the efficacy on the healing of mechanical decontamination of infected implant surfaces performed with a titanium brush.
Mandibular premolars and first molars were extracted bilaterally in six dogs. After 3 months, two unsubmerged implants were installed on both sides of the mandible. Three months later, peri-implantitis was induced with ligatures for 3 months and then removed. After 1 month, surgical mechanical decontamination of the surfaces was performed either with a rotatory titanium brush or gauzes soaked in saline. Five month later, biopsies were retrieved. Evaluations on X-rays taken of the mesiodistal plane and on histological slides prepared in a buccal-lingual plane were performed.
After the induction of peri-implantitis, a mean marginal bone loss of 2.6 ± 0.6 mm and 1.9 ± 1.0 mm was observed in the brush and gauze groups by X-ray, respectively. Five months after treatment, a mean gain of marginal bone of 0.6 mm was obtained in both groups. The mean closures of the vertical and horizontal defects were 0.6 mm and 0.6 mm for the brush group, and 0.8 mm and 0.5 mm for the gauze group, respectively. Histologically, a loss of attachment at the buccal aspect of 2.2 ± 0.9 mm in the brush group and of 2.3 ± 0.5 mm in the gauze group was found. No statistically-significant differences were found after the treatment.
Mechanical implant surface decontamination performed with a rotatory titanium brush resulted in a marginal bone level gain, yielding a low content of inflammatory infiltrate close to the marginal bone.
本研究旨在评估用钛刷对感染种植体表面进行机械去污处理在愈合方面的疗效。
在六只犬双侧拔除下颌前磨牙和第一磨牙。3个月后，在下颌两侧植入两颗非潜入式种植体。3个月后，用结扎线诱导种植体周围炎3个月，然后去除结扎线。1个月后，用旋转钛刷或浸有生理盐水的纱布对种植体表面进行手术机械去污处理。5个月后，取活检组织。对近远中平面的X线片以及颊舌平面制备的组织学切片进行评估。
诱导种植体周围炎后，X线片显示钛刷组和纱布组的平均边缘骨吸收分别为2.6±0.6mm和1.9±1.0mm。治疗5个月后，两组的边缘骨平均增加0.6mm。钛刷组垂直和水平缺损的平均闭合分别为0.6mm和0.6mm，纱布组分别为0.8mm和0.5mm。组织学上，钛刷组颊侧附着丧失2.2±0.9mm，纱布组为2.3±0.5mm。治疗后未发现统计学上的显著差异。
用旋转钛刷对种植体表面进行机械去污处理可使边缘骨水平增加，且边缘骨附近的炎性浸润含量较低。
