[Analysis of modified laterally positioned flap]

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.