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International Journal of Periodontics & Restorative Dentistry
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Int J Periodontics Restorative Dent 35 (2015), No. 1     5. Jan. 2015
Int J Periodontics Restorative Dent 35 (2015), No. 1  (05.01.2015)

Page 98-103, doi:10.11607/prd.1888, PubMed:25734712


Evaluation of a Porcine Collagen Matrix Used to Augment Keratinized Tissue and Increase Soft Tissue Thickness Around Existing Dental Implants
Schallhorn, Rachel A. / McClain, Pamela K. / Charles, Allan / Clem, Donald / Newman, Michael G.
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.