Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
Clin Implant Dent Relat Res. 2019 Jun;21(3):482-491. doi: 10.1111/cid.12785. Epub 2019 Apr 29.
A 1-2 mm thick labial plate is generally advocated in immediate implant placement and provisionalization (IIPP). However, most of the human labial plates fail to meet this requirement.
This study aimed to investigate the effect of labial plate thickness on hard tissue, soft tissue, and esthetic outcomes in IIPP.
In this prospective cohort study, 40 patients received IIPP of 50 single-crown implants in the anterior maxilla. Patients were categorized into three groups according to their presurgical thickness of labial bone: 0-0.5, 0.5-1, and ≥ 1 mm. CBCT, mucosa recession and the papilla index were used to analyze labial hard and soft tissue alterations with a 1-year follow-up.
At 1 year, OCI bone losses were 1.17 ± 0.73, 0.37 ± 0.39, 0.46 ± 0.35 mm; ICH bone losses were 2.23 ± 1.83, 0.74 ± 0.71, 0.72 ± 1.27 mm; TM recessions were 1.00 ± 0.51, -0.06 ± 0.37, -0.30 ± 0.88 mm; TL recessions were 0.61 ± 1.02, -0.18 ± 0.40, -0.26 ± 1.15 mm; TD recessions were 0.61 ± 1.02, -0.18 ± 0.40, -0.26 ± 1.15 mm; PIS scores were 1.63 ± 0.64, 2.20 ± 0.71, 2.71 ± 0.57 in group 0-0.5, 0.5-1 and ≥ 1 mm, respectively. No statistical significance was found between group 0.5-1 and ≥ 1 mm in bone resorption, gingival recession, and papilla index. The bone resorption and gingival recession were significantly the highest in group 0-0.5 mm at 6 months and 1 year.
Group 0.5-1 mm had similar tissue dimensional alteration as group ≥1 mm, while group <0.5 mm suffered more massive bone resorption and gingival recession. Concerning the thickness of the labial plate, this study may suggest an expansion in the indication of IIPP.
在即刻种植和临时修复（IIPP）中，通常提倡使用 1-2 毫米厚的唇板。然而，大多数人的唇板无法满足这一要求。
本研究旨在探讨 IIPP 中唇板厚度对硬组织、软组织和美学效果的影响。
在这项前瞻性队列研究中，40 名患者在前上颌接受了 50 个单冠种植体的 IIPP。根据术前唇骨厚度将患者分为三组：0-0.5mm、0.5-1mm 和≥1mm。使用 CBCT、黏膜退缩和乳头指数在 1 年随访中分析唇侧软硬组织的改变。
在 1 年时，OCI 骨吸收分别为 1.17±0.73mm、0.37±0.39mm 和 0.46±0.35mm；ICH 骨吸收分别为 2.23±1.83mm、0.74±0.71mm 和 0.72±1.27mm；TM 退缩分别为 1.00±0.51mm、-0.06±0.37mm 和-0.30±0.88mm；TL 退缩分别为 0.61±1.02mm、-0.18±0.40mm 和-0.26±1.15mm；TD 退缩分别为 0.61±1.02mm、-0.18±0.40mm 和-0.26±1.15mm；PIS 评分分别为 1.63±0.64、2.20±0.71 和 2.71±0.57，在 0-0.5mm、0.5-1mm 和≥1mm 组中分别为 1.63±0.64、2.20±0.71 和 2.71±0.57。0.5-1mm 和≥1mm 组之间在骨吸收、牙龈退缩和乳头指数方面无统计学意义。0-0.5mm 组在 6 个月和 1 年时的骨吸收和牙龈退缩最大。
0.5-1mm 组与≥1mm 组的组织维度改变相似，而<0.5mm 组的骨吸收和牙龈退缩更为严重。就唇板厚度而言，本研究可能表明 IIPP 的适应证有所扩大。
