Soft tissue volume alterations after connective tissue grafting at teeth: the subepithelial autologous connective tissue graft versus a porcine collagen matrix - a pre-clinical volumetric analysis.

摘要: Aim This study evaluates a porcine collagen matrix (CM) for soft tissue thickening in comparison to the subepithelial connective graft (SCTG). Material and Methods In eight beagle dogs, was performed at buccal aspects of upper canines (SCTG CM). Impressions were taken before augmentation (i1), after surgery (i2), one (i3), three (i4) ten month (i5). Casts optically scanned with 3D scanner each augmented region (unit analysis) evaluated (primary outcome variable: volume increase mm3; secondary variables: percent, mean maximum thickness increases mm). Results 3D measurements revealed significant higher CM (86.37 mm3 ± 35.16 mm3) than SCTG group (47.65 mm3 ± 17.90 mm3). After 10 months, non-significant between groups (SCTG:11.36 mm3 ± 9.26 mm3; CM: 8.67 mm3 ± 13.67 mm3). Maximum (i1-i5) 0.66 mm ± 0.29 mm (SCTG) 0.79 mm ± 0.37 mm no difference. Conclusions Ten months thickening, is statistically non-inferior terms increase. Further studies are needed confirm data.