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J Indian Soc Periodontol. 2016 Jul-Aug;20(4):441-445. doi: 10.4103/0972-124X.181245.

Changes of the peri-implant soft tissue thickness after grafting with a collagen matrix.

Author information

1
Department of Oral Hygiene, Claudiana University of Applied Health Sciences, Bolzano, Italy.
2
Division of Periodontology, School of Dentistry, Catholic University, Rome, Italy.
3
Department of Periodontology, School of Dentistry, Loma Linda University, Loma Linda, CA, USA.
4
Department of Oral Surgery, School of Dentistry, University of Duesseldorf, Duesseldorf, Germany.

Abstract

BACKGROUND:

The aim of this study was to determine the treatment outcome of the use of a porcine monolayer collagen matrix (mCM) to increase soft-tissue volume as a part of implant site development.

MATERIALS AND METHODS:

Implants were placed in single sites in 27 patients. In the test group, mCM was used for soft-tissue augmentation. No graft was placed in the control group. Soft-tissue thickness (STTh) was measured at the time of surgery (T0) and 6 months postoperatively (T1) at two sites (STTh 1, 1 mm below the gingival margin; STTh 2, 3 mm below the mucogingival margin).

RESULTS:

Significant increases (P < 0.001) in STTh (STTh 1 = 1.06 mm, 117%; STTh 2 = 0.89 mm, 81%) were observed in the test group. Biopsy results showed angiogenesis and mature connective tissue covered by keratinized epithelium.

CONCLUSIONS:

Within the limitations of this study, it could be concluded that mCM leads to a significant increase of peri-implant soft-tissue thickness, with good histological integration and replacement by soft tissue and may serve as an alternative to connective tissue grafting.

KEYWORDS:

Augmentation; collagen matrix; connective tissue; tissue thickness; tissue volume

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