Department of Periodontology, School of Dentistry, Oregon Health & Science University, Portland, OR, USA.
School of Dentistry, Espiritu Santo University, Samborondon, Ecuador.
J Periodontol. 2021 Jun;92(6):771-783. doi: 10.1002/JPER.20-0458. Epub 2020 Nov 11.
The aim of this 1-year prospective clinical trial was to compare clinical parameters and marginal bone levels (MBLs) around tissue level implants with a partially smooth collar between patients with thin (≤2 mm) and thick (>2 mm) vertical mucosal phenotypes.
Thirty patients needing a single dental implant were recruited and allocated to thin (n = 14) or thick (n = 16) phenotype groups. Post-restoration, clinical (probing depth, recession, width of keratinized mucosa, bleeding on probing, suppuration, implant mobility, plaque index, and gingival index) and radiographic bone level measurements were recorded at different timepoints for 1 year.
Twenty-six patients (13 per group) completed the 1-year examination. No implants were lost (100% survival rate). There were no significant differences (P >0.05) between thin and thick vertical mucosal phenotypes for any clinical parameter or for the radiographic MBL.
Tissue level implants at 1 year of function placed in thin vertical mucosa achieved similar clinical parameters and radiographic MBLs as those in thick tissue. The formation of the peri-implant supracrestal tissue height plays a key role in MBL than mucosal thickness in tissue level implant.
本为期 1 年的前瞻性临床试验旨在比较薄（≤2mm）和厚（>2mm）垂直黏膜表型患者中具有部分光滑颈缘的组织水平种植体的临床参数和边缘骨水平（MBL）。
招募了 30 名需要单颗牙种植体的患者，并将其分为薄（n=14）或厚（n=16）表型组。修复后，在 1 年内的不同时间点记录临床（探诊深度、退缩、角化黏膜宽度、探诊出血、化脓、种植体动度、菌斑指数和牙龈指数）和放射学骨水平测量值。
26 名患者（每组 13 名）完成了 1 年的检查。无种植体脱落（100%存活率）。在任何临床参数或放射学 MBL 方面，薄和厚垂直黏膜表型之间均无显著差异（P>0.05）。
在 1 年功能期内，在薄的垂直黏膜中放置组织水平种植体可获得与厚组织中相似的临床参数和放射学 MBL。在组织水平种植体中，种植体周围龈上组织高度的形成比黏膜厚度对 MBL 更为关键。
