title: A comparative study of root coverage using two different acellular dermal matrix products.
abstract: BACKGROUND
  Gingival recession remains an important problem in dental esthetics. A new dermal matrix material has been introduced, but its effectiveness has not been studied and compared to current dermal matrix material. The aim of this study is to compare the healing associated with a coronally advanced flap for root coverage in areas of localized tissue recession when using Alloderm (ADM) and Puros Dermis (PDM).
  
  
  METHODS
  A split-mouth design was used for this study, with 52 contralateral sites in 14 patients with Miller Class I or III facial tissue recession. Twenty-six sites were treated with coronally advanced flap using PDM, and 26 sites were treated with coronally advanced flap using ADM, all followed for 6 months. Clinical measurements of vertical recession, keratinized tissue, probing depths, and attachment levels were made initially, at 3 months, and at 6 months.
  
  
  RESULTS
  Both groups had significant improvement in the amount of recession coverage with means of 2.83 mm for the PDM and 3.13 mm for the ADM. The percentage of root coverage was 81.4% for the PDM and 83.4% for the ADM; differences between the materials were not statistically significant.
  
  
  CONCLUSIONS
  Based on the results of this study, there was no statistical or clinical difference in the amount of root coverage, probing depth, or keratinized tissue in coronally advanced flaps for root coverage with either of the two acellular dermal matrix materials. Both materials were successful in achieving root coverage.
authors.affiliation: Department of Periodontics, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas, TX 75246, USA.
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Barker
authors.forename: Marco A
authors.initials: MA
authors.lastname: Cueva
authors.forename: Francisco
authors.initials: F
authors.lastname: Rivera-Hidalgo
authors.forename: M Miles
authors.initials: MM
authors.lastname: Beach
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Rossmann
authors.forename: David G
authors.initials: DG
authors.lastname: Kerns
authors.forename: T Bradley
authors.initials: TB
authors.lastname: Crump
authors.forename: Jay D
authors.initials: JD
authors.lastname: Shulman
mesh_terms: D000328:Adult; D001672:Biocompatible Materials / Q000627:therapeutic use*; D003094:Collagen / Q000627:therapeutic use*; D005260:Female; D005500:Follow-Up Studies; D005881:Gingiva / Q000473:pathology; D005889:Gingival Recession / Q000145:classification / Q000601:surgery*; D005893:Gingivoplasty / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D017622:Periodontal Attachment Loss / Q000601:surgery; D010514:Periodontal Pocket / Q000601:surgery; D019651:Plastic Surgery Procedures / Q000379:methods*; D016745:Root Planing / Q000379:methods; D013524:Surgical Flaps; D013536:Suture Techniques; D014092:Tooth Root / Q000601:surgery*
chemical_list: C440568:Alloderm; D001672:Biocompatible Materials; D003094:Collagen