PhD student, Department of Biomaterials and Biomimetics, New York University, New York, NY.
PhD student, Department of Biomaterials and Biomimetics, New York University, New York, NY PhD student, Prosthodontics and Periodontology Department, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
Implant Dent. 2019 Aug;28(4):319-328. doi: 10.1097/ID.0000000000000886.
To compare hard-tissue healing after 3 exodontia approaches.
Premolars of dogs were extracted: (1) flapless, (2) flap, and (3) flap + socket coverage with polytetrafluoroethylene (dPTFE) nonresorbable membrane (flap + dPTFE). Animals were euthanized at 1 and 4 weeks. Amount of bone formation within socket and socket total area were measured.
Amount of bone formation revealed significant difference between 1 and 4 weeks; however, there was no differences among groups. Socket total area decreased after 4 weeks, and the flap + dPTFE group showed significantly higher socket total area. As a function of time and group, flap + dPTFE 4 weeks presented similar socket total area values relative to flap + dPTFE at 1 week, and significantly higher socket total area than flapless and flap. The histological sections revealed almost no bone formation within socket after 1 week, which increased for all groups at 4 weeks.
Socket coverage with polytetrafluoroethylene (dPTFE) membrane showed to effectively preserve bone architecture. Bone formation within sockets was not influenced by tooth extraction technique.
比较 3 种拔牙方法后硬组织的愈合情况。
从犬的磨牙中提取：（1）无瓣，（2）瓣，（3）瓣+聚四氟乙烯（dPTFE）不可吸收膜（瓣+dPTFE）覆盖牙槽窝。动物在 1 周和 4 周时安乐死。测量牙槽窝内骨形成量和牙槽窝总面积。
骨形成量在 1 周和 4 周之间有显著差异；然而，各组之间没有差异。4 周后牙槽窝总面积减小，瓣+dPTFE 组的牙槽窝总面积明显较高。随着时间和组的变化，瓣+dPTFE 4 周时的牙槽窝总面积与瓣+dPTFE 1 周时相似，且明显高于无瓣和瓣。组织学切片显示，第 1 周牙槽窝内几乎没有骨形成，所有组在第 4 周时骨形成增加。
聚四氟乙烯（dPTFE）膜覆盖牙槽窝可有效保存骨结构。拔牙技术不影响牙槽窝内的骨形成。
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