Kaminaka Akihiro, Nakano Tamaki, Ono Shinji, Kato Tokinori, Yatani Hirofumi
Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan.
Clin Implant Dent Relat Res. 2015 Oct;17 Suppl 2:e576-85. doi: 10.1111/cid.12286. Epub 2014 Dec 23.
This study evaluated changes in the horizontal and vertical dimensions of the buccal alveolar bone and soft tissue over a 1-year period following implant prosthesis.
Thirty-three participants with no history of guided bone regeneration or soft tissue augmentation underwent dental implant placement with different types of connections. The dimensions of the buccal alveolar bone and soft tissue were evaluated immediately and at 1 year after prosthesis from reconstructions of cross-sectional cone-beam computed tomography images.
The vertical and horizontal loss of buccal bone and soft tissue around implants with conical connections were lower than around those with external or internal connections. Statistically significant negative correlations were observed between initial horizontal bone thickness and changes in vertical bone and soft tissue height (p < .05), and between initial horizontal soft tissue thickness and the change in vertical soft tissue height (p < .05).
Implants with a conical connection preserve peri-implant alveolar bone and soft tissue more effectively than other connection types. Furthermore, the initial buccal alveolar bone and soft tissue thickness around the implant platform may influence their vertical dimensional changes at 1 year after implant prosthesis.
本研究评估了种植修复后1年内颊侧牙槽骨和软组织水平及垂直维度的变化。
33名无引导骨再生或软组织增量史的参与者接受了不同类型连接的牙种植体植入。通过横断面锥形束计算机断层扫描图像重建，在修复后即刻及1年时评估颊侧牙槽骨和软组织维度。
锥形连接种植体周围颊侧骨和软组织的垂直及水平吸收低于外部或内部连接种植体周围。初始水平骨厚度与垂直骨和软组织高度变化之间（p < 0.05），以及初始水平软组织厚度与垂直软组织高度变化之间（p < 0.05）存在统计学显著的负相关。
锥形连接种植体比其他连接类型更有效地保留种植体周围牙槽骨和软组织。此外，种植体平台周围初始颊侧牙槽骨和软组织厚度可能会影响种植修复后1年时它们的垂直维度变化。
