A Randomized comparative clinical study of two surgical procedures to improve root coverage with the acellular dermal matrix graft.
OBJECTIVE
This randomized, controlled, clinical study compared two surgical techniques for root coverage with the acellular dermal matrix graft (ADMG) to evaluate which procedure could provide better root coverage and greater amounts of keratinized tissue.


METHODS
Fifteen pairs of bilateral Miller Class I or II gingival recessions were treated and assigned randomly to the test group, and the contra-lateral recessions were assigned to the control group. The ADMG was used in both groups. In the control group, the graft and flap were positioned at the level of the cemento-enamel junction (CEJ), and in the test group, the graft was positioned 1 mm apical to the CEJ and the flap 1 mm coronal to the CEJ. The clinical parameters were taken before the surgeries and after 6 months. The gingival recession area, a new parameter, was measured in standardized photographs through a special device and software.


RESULTS
There were statistically significant differences favouring the proposed technique for all parameters except for the amount of keratinized tissue at 6 months.


CONCLUSIONS
The proposed test technique is more suitable for root coverage procedures with ADMG, and the new parameter evaluated appears valuable for root coverage analysis. (Clinicaltrials.gov Identifier: NCT01175720).
Department of Bucco-Maxillo-Facial Surgery and Traumatology and Periodontology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirão Preto, Brazil.
Lauro G
LG
Ayub
Umberto D
UD
Ramos
Danilo M
DM
Reino
Márcio F M
MF
Grisi
Mário
M
Taba
Sérgio L S
SL
Souza
Daniela B
DB
Palioto
Arthur B
AB
Novaes
D062088:Acellular Dermis; D000328:Adult; D001672:Biocompatible Materials / Q000627:therapeutic use; D005500:Follow-Up Studies; D005889:Gingival Recession / Q000601:surgery*; D006085:Graft Survival; D006801:Humans; D008875:Middle Aged; D019647:Oral Surgical Procedures / Q000379:methods*; D013524:Surgical Flaps; D014092:Tooth Root; D016896:Treatment Outcome; D014945:Wound Healing; D055815:Young Adult
D001672:Biocompatible Materials