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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

November/December 2014
Volume 45 , Issue 10

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Stage-two surgery using collagen soft tissue grafts: Clinical cases and ultrastructural analysis

Fischer, Kai R. / Fickl, Stefan / Mardas, Nikos / Bozec, Laurent / Donos, Nikolaos

Pages: 853-860
PMID: 25126630
DOI: 10.3290/j.qi.a32511

Objective: To present the application of two different soft tissue grafts around dental implants during stage-two surgery. Furthermore, the ultrastructure of these materials is shown and discussed using scanning electron microscopy (SEM).
Summary: Although soft tissue autografts may be currently regarded as the gold standard, harvesting of these grafts might lead to higher morbidity, longer chair time, and intra-/postoperative complications at the donor site. New developments in collagen scaff olds have provided an alternative to successfully replace autologous grafts in clinical practice. The SEM pictures clearly show the different composition of a bilayer scaff old (collagen matrix, CM) and a porcine acellular dermal matrix (ADM). These distinctive properties lead to different possible indications. Within the presented cases, ADM was used to augment the ridge contour and was placed into a buccal pouch to achieve complete coverage and an uneventful closed healing. On the other side, CM was left exposed to the oral cavity to successfully gain keratinized mucosa around and between two dental implants.

Keywords: acellular dermal matrix, bilayer collagen matrix, matrix structure, stage-two surgery, soft tissue augmentation

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