Periodontology Unit, School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain.
J Clin Periodontol. 2013 Apr;40(4):412-20. doi: 10.1111/jcpe.12068. Epub 2013 Feb 21.
The goal of this study was to investigate the effect of a modified transgingival implant collar surface (acid-etched structure and hydrophilic properties) comparatively to a machined collar surface on the clinical and soft tissue integration to pure titanium implants (Ti) and titanium implants alloyed with zirconium (TiZr).
Twenty-seven implants belonging to the following groups (9 of each group): Ti modSLA with machined collar (Ti-M), Ti modSLA with machined, acid-etched surface collar (Ti-modMA) and TiZr modSLA with machined, acid-etched surface collar (TiZr-modMA) were placed in the mandible of 6 minipigs. After 8 weeks of healing, clinical measurements were taken and the sample sites were dissected and processed for histological evaluation.
Eight weeks after implantation, the mucosa was generally located above the implant shoulder for all implant types. Histomorphometric evaluation revealed that the sulcular epithelium, junctional epithelium and the connective tissue contact were similar in the three groups. Adjusted comparisons showed that the first bone-to-implant contact was statistically more coronal for the Ti-modMA in comparison with the machined.
The soft tissue dimensions around all implant prototypes were similar and not affected by the implant surface modification.
本研究旨在比较经改良的龈下种植体颈缘表面(酸蚀结构和亲水性能)和机械加工颈缘表面对纯钛种植体(Ti)和钛锆合金种植体(TiZr)的临床和软组织整合的影响。
将 27 枚种植体分为以下 3 组(每组 9 枚):机械加工颈缘的改良 SLA 表面(Ti-M)、机械加工和酸蚀颈缘表面的改良 SLA 表面(Ti-modMA)以及机械加工和酸蚀颈缘表面的钛锆合金改良 SLA 表面(TiZr-modMA)。将这些种植体植入 6 只小型猪的下颌骨中,愈合 8 周后进行临床测量,并对样本部位进行解剖和组织学评估。
种植后 8 周,所有种植体类型的黏膜通常位于种植体肩上方。组织形态计量学评估显示,三组的沟内上皮、结合上皮和结缔组织与种植体的接触均相似。调整后比较显示,与机械加工相比,Ti-modMA 的初始骨-种植体接触更接近冠方。
所有种植体原型周围的软组织尺寸相似,不受种植体表面改性的影响。