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Volume 35 , Issue 1
January/February 2015

Pages 99-103


Evaluation of a Porcine Collagen Matrix Used to Augment Keratinized Tissue and Increase Soft Tissue Thickness Around Existing Dental Implants

Rachel A. Schallhorn, DDS, MS/Pamela K. McClain, DDS/Allan Charles, DDS/Donald Clem, DDS, PhD/Michael G. Newman, DDS


PMID: 25734712
DOI: 10.11607/prd.1888

Implant-supported prostheses often present with mucogingival deficiencies that may cause esthetic or hygienic issues. These issues may present as limited or no keratinized tissue, irregular soft tissue contour or concavity, and gray “showthrough” of the implant abutment and root forms. An interpositional soft tissue graft substitute that generates keratinized tissue and increases soft tissue thickness would be beneficial, as it would reduce donor site morbidity and be available in unlimited, off-the-shelf supply. Thirty patients were assessed as part of a multicenter, practice-based evaluation of the material. A xenogeneic collagen matrix was placed as an interpositional graft on the buccal aspect of implant sites; sites were reassessed at 6 months posttreatment. Results indicated that the collagen matrix increased tissue thickness and keratinized tissue around existing dental implants.


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