*Adjunct Professor, Department of Dentistry, Vita Salute University, IRCCS San Raffaele Hospital, Milan, Italy. †Researcher, Department of Dentistry, Vita Salute University, IRCCS San Raffaele Hospital, Milan, Italy. ‡Fellow MD, Insubria University, Varese, Italy. §Associate Professor, Dental School, Vita-Salute University, Milan, Italy. ¶Full Professor and Chairmen, Department of Dentistry, Vita Salute University, IRCCS San Raffaele Hospital, Milan, Italy.
Implant Dent. 2017 Jun;26(3):417-422. doi: 10.1097/ID.0000000000000587.
The aim of this study was to assess dimensional changes of the fresh sockets grafted with collagen sheets and maintenance of reactive soft tissue, using cone beam computed tomography (CBCT).
Tooth extractions were performed with maximum preservation of the alveolar housing, reactive soft tissue was left into the sockets and collagen sheets filled bone defects. Cone beam computed tomography were performed before and 3 months after extractions.
One hundred forty-five teeth, 60 monoradiculars and 85 molars, were extracted. In total, 269 alveoli were evaluated. In Group A, not statistically significant differences were found between monoradiculars, whereas statistically significant differences (P < 0.05) were found between molars, both for mesial and distal alveoli. In Group B, not statistically significant differences were found between maxillary and mandibular bone changes values (P > 0.05) for all types of teeth.
This study reported an atraumatic tooth extraction, reactive soft tissue left in situ, and grafted collagen sponge may be helpful to reduce fresh socket collapse after extraction procedures.
本研究旨在使用锥形束计算机断层扫描(CBCT)评估胶原片移植的新鲜牙槽窝的三维变化和反应性软组织的维持情况。
拔牙时最大程度地保留牙槽骨,将反应性软组织留在牙槽窝中,并用胶原片填充骨缺损。拔牙前和拔牙后 3 个月进行锥形束计算机断层扫描。
共拔除 145 颗牙齿,其中单根牙 60 颗,磨牙 85 颗。共评估了 269 个牙槽。在 A 组中,单根牙之间无统计学差异,而磨牙之间存在统计学差异(P <0.05),无论是近中还是远中牙槽。在 B 组中,上颌骨和下颌骨变化值之间无统计学差异(P >0.05),所有类型的牙齿均如此。
本研究报道了一种微创拔牙方法,将反应性软组织原位保留并用胶原海绵移植可能有助于减少拔牙后新鲜牙槽窝的塌陷。