Back to Search Start Over

An in vivo comparison of wound healing characteristics of two commercial acellular dermal matrices

Authors :
Sophie R. Couto
Xianghong Luan
Jeffrey A. Rossmann
William V. Stenberg
Karen Yen
Sarah Atwi
Kathy K. Svoboda
Source :
Clinical and Experimental Dental Research, Vol 7, Iss 5, Pp 679-691 (2021)
Publication Year :
2021
Publisher :
Wiley, 2021.

Abstract

Abstract Objectives Many acellular dermal matrices (ADMs) are available for use in periodontal surgical procedures. However, few studies exist evaluating their in vivo healing properties. The objectives of this study were to compare the wound healing and remodeling of two ADMs used for gingival augmentation procedures in the rat model. Materials and methods This was a nonrandomized controlled split‐mouth study. Envelope flaps were surgically created in the maxillary quadrants of 24 Sprague Dawley rats. Each received either (a) AlloDerm Regenerative Tissue Matrix, or (b) OrACELL. Gingival tissue from one mandibular quadrant served as the untreated control. Six male and six female rats were treated for 7 or 21 days. Biopsies were processed for histologic analysis (H&E, Picro‐sirius red, Verhoeff's solution) or RNA analysis (RT‐PCR) to analyze the expression of type I collagen (Col1a1), fibronectin (Fn‐1) and VEGF‐A (Vegf‐A). Results There was a greater density of fibroblasts in OrACELL compared to AlloDerm at both timepoints. There was a greater density of elastin present in AlloDerm compared to OrACELL at 7 days but no differences at 21 days. There were no differences between test groups in the percentage of birefringent collagen or in the expression of Vegf‐A or Fn‐1. At 7 days, there were significantly more fibroblasts for males in the OrACELL group compared to females. At 21 days, there was a significantly greater expression of Col1a1 for males in the OrACELL group compared to females. Conclusions Early wound healing and remodeling of OrACELL appeared to occur more rapidly than AlloDerm and was accelerated in male rats. Whether these results have clinical implications for soft tissue grafting procedures in humans remains to be determined.

Details

Language :
English
ISSN :
20574347
Volume :
7
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Clinical and Experimental Dental Research
Publication Type :
Academic Journal
Accession number :
edsdoj.98e0d4b4331d4750b76b55fe072fbbda
Document Type :
article
Full Text :
https://doi.org/10.1002/cre2.412