Association of flap tension with flap design and graft volume in soft tissue augmentation: a cadaveric study in pigs.

IF 2.2 4区 医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE
Miha Pirc, Leonardo Mancini, Nicolas Müller, Hyun-Chang Lim, Ronald E Jung, Daniel S Thoma, Stefan P Bienz
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Abstract

Purpose: This study was performed to evaluate the effects of flap design, grafting material, and graft dimension on flap tension and the initial volume increase achieved in soft tissue augmentation.

Methods: Six fresh porcine jaw cadavers were used in this study. Each side of the jaw was randomly assigned to receive either a standard split-thickness flap or a split-thickness flap with a palatal island. Following flap preparation, random allocation was employed to determine the order of 4 treatment modalities: 3 mm of a volume-stable collagen matrix (VCMX), 6 mm VCMX, 3 mm of a subepithelial connective tissue graft (SCTG), and 6 mm SCTG. Flap tension was measured and the wound was closed after the insertion of each specimen. Intraoral scans were taken before flap preparation and after closure to facilitate profilometric analysis.

Results: The palatal island flap exhibited significantly greater overall (P=0.010) and crestal (P=0.007) volume gains compared to the split-thickness flap, regardless of the use of VCMX or SCTG. The palatal island flap was associated with significantly lower flap tension force values (0.6 N; P=0.035) than the split-thickness flap. Both materials (VCMX and SCTG) demonstrated comparable volume gains.

Conclusions: The findings of this cadaveric study indicate that the use of a palatal island flap effectively reduces flap tension. While both materials (VCMX and SCTG) yielded similar increases in volume, the palatal island flap demonstrated greater volume gains than the split-thickness flap for each grafting material.

软组织扩张中皮瓣张力与皮瓣设计和移植物体积的关系:猪的尸体研究。
目的:本研究评估皮瓣设计、移植物材料和移植物尺寸对软组织隆胸皮瓣张力和初始体积增加的影响。方法:以6具新鲜猪颚尸体为研究对象。每侧颌骨被随机分配接受一个标准的裂厚皮瓣或裂厚皮瓣与腭岛。皮瓣制备后,采用随机分配的方法确定4种治疗方式的顺序:3mm体积稳定的胶原基质(VCMX)、6mm VCMX、3mm上皮下结缔组织移植物(SCTG)和6mm SCTG。测量皮瓣张力,并在每个标本插入后关闭伤口。在皮瓣准备前和关闭后进行口内扫描,以方便轮廓分析。结果:无论使用VCMX还是SCTG,腭岛状皮瓣的总体体积(P=0.010)和嵴体积(P=0.007)均明显大于裂厚皮瓣。腭岛状皮瓣张力值明显降低(0.6 N;P=0.035)。两种材料(VCMX和SCTG)均表现出相当的体积增益。结论:本尸体研究结果表明,使用腭岛状皮瓣可有效降低皮瓣张力。虽然两种材料(VCMX和SCTG)的体积增加相似,但每种移植材料的腭岛状皮瓣的体积增加都比裂厚瓣大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Periodontal and Implant Science
Journal of Periodontal and Implant Science DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
3.30
自引率
5.30%
发文量
38
期刊介绍: Journal of Periodontal & Implant Science (JPIS) is a peer-reviewed and open-access journal providing up-to-date information relevant to professionalism of periodontology and dental implantology. JPIS is dedicated to global and extensive publication which includes evidence-based original articles, and fundamental reviews in order to cover a variety of interests in the field of periodontal as well as implant science.
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