Root coverage comparing acellular dermal matrix to connective tissue graft using the coronally positioned tunnel technique.

摘要

Aims. The primary aim of this randomized, blinded, controlled clinical trial was to compare the percent root coverage obtained using acellular dermal matrix allograft and connective tissue graft using the coronally positioned tunnel technique 4 months post-surgically.;Results. The mean facial recession defect at the initial exam for the ADM group was 3.1 +/- 0.3 mm which was reduced to 0.1 +/- 0.3 mm at the 4 month exam for a gain of 3.0 +/- 0.4 mm or 97% defect coverage (p < 0.05). The mean facial recession defect at the initial exam for the CT group was 3.0 +/- 0.1 mm which was reduced to 0.2 +/- 0.6 mm at the 4 month exam for a gain of 2.8 +/- 0.4 mm or 95% defect coverage (p 0.05). Probing depth increased 0.1 mm for both groups (p > 0.05) from baseline to 4 months. Clinical attachment level increased 3.0 mm for the ADM group (p < 0.05) and 2.9 mm for the CT group (p < 0.05) at the 4-month final measurement. Mean keratinized tissue increased 0.3 mm for the ADM group (p > 0.05) and 0.4 mm for the CT group (p > 0.05). Creeping attachment was 0.1 mm for the ADM group (p > 0.05) and 0.2 mm for the CT group (p > 0.05) at the 4-month final measurement.;Conclusions. The coronally positioned tunnel plus ADM produced 97% defect coverage while the coronally positioned tunnel plus CT produced 95% defect coverage.;Methods. Twenty-four patients with 1 site of ≥ 3 mm Miller Class I or II recession were treated and followed for 4 months. Twelve patients received a coronally positioned tunnel plus ADM and were considered the test group. The positive control group consisted of 12 patients treated with a coronally positioned tunnel technique plus connective tissue graft and were considered the control group. Patients were randomly selected by a coin toss to receive either the test or control treatment.