治疗牙龈退缩缺损的骨膜基底移植愈合:兔子组织学研究

National journal of maxillofacial surgery Pub Date : 2024-05-01 Epub Date: 2024-07-24 DOI:10.4103/njms.njms_187_22
Asi Kanwarjit Singh, Ajay Mahajan, Deepa Rayast
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引用次数: 0

摘要

目的:文献中描述了多种治疗牙龈退缩缺损的手术技术,但支持现有技术的组织病理学证据却很少。最近,骨膜基底移植术(PPG)被证明是治疗牙龈退缩缺损(GRD)的有效方法,其效果与上皮下结缔组织移植术(SCTG)相当:本组织病理学研究旨在评估骨膜蒂自体移植物与冠状前移皮瓣在治疗牙龈退缩缺损中的愈合模式:本研究在 5 只兔子的 10 个部位进行。每只兔子选取两个部位,通过手术形成牙龈退缩缺损,然后使用骨膜基底自体移植术和冠状前移皮瓣术进行治疗。每隔 6 个月对愈合模式进行组织病理学评估:结果:愈合第 7 天,可见扩张的血管和炎性细胞,第 14 天出现不发育的齿痕。3 个月至 6 个月期间,观察到结缔组织组织的高级组织学修复,开始出现交界上皮、骨水泥和骨形成:结论:使用 PPG 治疗的牙龈退缩缺损具有骨水泥、骨和牙周韧带纤维再生以及新结缔组织附着的证据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Healing of periosteal pedicle graft in the treatment of gingival recession defects: A histological study in rabbits.

Purpose: Various surgical techniques are described in the literature to manage gingival recession defects but the histopathologic evidence to support the current available techniques, is scarce. Recently periosteal pedicle graft (PPG) has proven to be an effective treatment option to treat gingival recession defects (GRD) with results comparable to subepithelial connective tissue graft (SCTG).

Objective: The present histopathological study was done to evaluate the healing pattern of periosteal pedicle autogenous graft along with coronally advanced flap in the treatment of gingival recession defects.

Materials and methods: The present study was performed on 10 sites in 5 rabbits. Two sites were selected in each animal and gingival recession defects were surgically created and then treated using periosteal pedicle pedicle graft along with coronally advanced flap procedure. Healing pattern was assessed histopathologically at pre-defined intervals till 6 months.

Results: On the 7th day of healing, dilated blood vessels with inflammatory cells were seen, while rudimentary rete-pegs appeared on 14th day. Between 3 months to 6 months, advanced histological repair with connective tissue organization with initiation of junctional epithelium, cementum and bone formation were observed.

Conclusion: Gingival recession defects treated with PPG had evidences of regeneration of cementum, bone and periodontal ligament fibers with new connective tissue attachment.

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