Tizzoni R, Tizzoni M
M.D. and D.D.S. Private practice, Milan, Italy;
Oral Implantol (Rome). 2010 Jan;3(1):2-11. Epub 2010 Nov 19.
Interimplant papilla reconstruction is difficult because the biologic width around an implant is apical to the implant-abutment connection and because the biologic width creates subcrestally. The aim of this study is to investigate whether the reconstruction of the interimplant papilla can be achieved by the use of an innovative surgical technique combined with scalloped implants, in the most severe surgical conditions, i.e. in variably reabsorbed ridges with flat anatomy.
Nine surgical sites, in eight consecutive patients, were treated with at least two adjacent scalloped implants and fixed prosthesis. 23 scalloped implants were placed using this new surgical technique on bone and soft tissue structures. One flat platform implant was also placed between two other scalloped implants. A total of 15 interimplant papillae were examined.
100% of papilla reconstruction at first prosthesis insertion. 13.3% failed to maintain interimplant papillae after 6 months and 20% after 12 months. Also, papilla reconstruction was maintained for 12 months in the mesial and distal embrasure spaces of the flat platform implant.
The combination of the use of adjacent scalloped implants with this surgical approach, even in reabsorbed ridges with flat anatomy, may reform inter-implant bone peaks as support for the papillae.
种植体间乳头重建具有挑战性,这是因为种植体周围的生物学宽度位于种植体 - 基台连接的根尖方向,且生物学宽度是在牙槽嵴顶下方形成的。本研究的目的是探讨在最严峻的手术条件下,即解剖形态平坦且存在不同程度吸收的牙槽嵴中,采用创新手术技术结合扇贝形种植体是否能够实现种植体间乳头的重建。
对连续8例患者的9个手术部位进行治疗,使用至少两个相邻的扇贝形种植体和固定修复体。采用这种新手术技术在骨和软组织结构上植入了23枚扇贝形种植体。还在另外两个扇贝形种植体之间植入了一枚平平台种植体。共检查了15个种植体间乳头。
初次戴入修复体时乳头重建率为100%。6个月后,13.3%的种植体间乳头未能维持,12个月后为20%。此外,平平台种植体近中及远中牙间隙的乳头重建维持了12个月。
即使在解剖形态平坦且存在吸收的牙槽嵴中,将相邻扇贝形种植体与这种手术方法相结合,也可能重塑种植体间的骨嵴顶以支持乳头。