Testori Tiziano, Deflorian Matteo Antonio, Mandelli Federico, Attardo Giulia, Maiorana Carlo, Del Fabbro Massimo, Vinci Raffaele
Dental Clinic, IRCCS Orthopedic Institute Galeazzi, 20161 Milan, Italy.
Department of Periodontics and Oral Medicine, School of Dentistry, The University of Michigan, Ann Arbor, MI 58259, USA.
Materials (Basel). 2021 May 11;14(10):2473. doi: 10.3390/ma14102473.
Analysis of short-term results regarding dimensional stability of post-extraction sockets managed via a preservation protocol using deproteinized bovine bone matrix and a xenogeneic collagen matrix. Materials and methods Fifteen patients needing extraction of one single-rooted premolar tooth were treated in a pilot study. Five patients were treated in each centre. After tooth extraction, sockets were filled with anorganic bovine bone matrix and covered with a xenogeneic collagen matrix. Six months later, implants were placed. Dimensional changes in the treated sites were digitally evaluated using the best-fit superimposition of pre-and post-socket preservation models. Results After six months of healing, the vertical reduction of the grafted sites was 0.31 ± 0.24 mm ( < 0.001). Volumetric analysis of superimposed models showed an average palatal-lingual contraction of 0.33 ± 0.51 mm ( = 0.02). At the vestibular level, the average contraction was found to be 0.8 ± 0.3 mm ( < 0.001). Finally, the analysis of linear variations in the treated sites on a single sagittal section at the crystal level, and at 3 and 7 mm apically respect to the crest, both towards the vestibule and palate, generally showed more marked resorption at the crestal level compared to apical measurements. Conclusion: The clinical protocol herein employed for socket preservation showed a positive effect in preventing the physiological post-extraction remodeling.
使用脱蛋白牛骨基质和异种胶原基质的保存方案对拔牙后牙槽窝尺寸稳定性的短期结果分析。材料与方法：在一项初步研究中，对15例需要拔除一颗单根前磨牙的患者进行了治疗。每个中心治疗5例患者。拔牙后，牙槽窝用无机牛骨基质填充，并用异种胶原基质覆盖。6个月后植入种植体。使用拔牙窝保存前后模型的最佳拟合叠加对治疗部位的尺寸变化进行数字评估。结果：愈合6个月后，移植部位的垂直减少量为0.31±0.24mm（P<0.001）。叠加模型的体积分析显示，腭舌向平均收缩量为0.33±0.51mm（P = 0.02）。在前庭水平，平均收缩量为0.8±0.3mm（P<0.001）。最后，在晶体水平以及相对于牙槽嵴顶端3mm和7mm处的单个矢状面上对治疗部位的线性变化进行分析，无论是朝向牙槽嵴顶还是腭侧，与根尖测量相比，牙槽嵴顶水平的吸收通常更为明显。结论：本文采用的牙槽窝保存临床方案在预防拔牙后生理性重塑方面显示出积极效果。
