Zelić O, Stevanović R
University School of Dental Medicine, Belgrade.
Stomatol Glas Srb. 1990 Mar-Apr;37(2):173-81.
The aim of this study was to investigate the effects of the covering of denuded root surfaces by the use of modified laterally positioned flap (MLPF) and application of supersaturated citric acid of pH 1. The following measurements were carried out: the width of attached gingiva, attachment of epithelium level, gingival recession, and plaque and gingival indices. The surface area of the exposed root was also measured. All measurements were made before MLPF and one, three, six and twelve months after the treatment. The average surface area of the gingival recession before surgery was 15.75 mm2 and one year after the treatment 4.20 mm2. This means that 73.30% of the denuded surfaces were covered. After the application of MLPF there was a statistically significant decrease of dental plaque index values and of gingival index values. The epithelium attachment was on the coronal level. Gingival recession was significantly decreased. The width of attached gingiva was statistically increased. It can be concluded that MLPF after the application of citric acid is a useful surgical procedure in the covering of denuded root surfaces.
本研究的目的是调查使用改良侧向转位瓣（MLPF）覆盖暴露的牙根表面以及应用pH值为1的过饱和柠檬酸的效果。进行了以下测量：附着龈宽度、上皮附着水平、牙龈退缩以及菌斑和牙龈指数。还测量了暴露牙根的表面积。所有测量均在MLPF治疗前以及治疗后1个月、3个月、6个月和12个月进行。手术前牙龈退缩的平均表面积为15.75平方毫米，治疗1年后为4.20平方毫米。这意味着73.30%的暴露表面被覆盖。应用MLPF后，牙菌斑指数值和牙龈指数值有统计学意义的下降。上皮附着位于冠方水平。牙龈退缩明显减少。附着龈宽度有统计学意义的增加。可以得出结论，在应用柠檬酸后，MLPF是覆盖暴露牙根表面的一种有用的外科手术。
