Xenogeneic collagen matrix versus connective tissue graft for buccal soft tissue augmentation at implant site. A randomized, controlled clinical trial.

Abstract:

BACKGROUND:Peri-implant soft tissue may be critical to prevent inflammation and promote gingival margin stability. The purpose of this randomized clinical trial (RCT) is to compare xenogeneic collagen matrix (XCM) versus connective tissue graft (CTG) to increase buccal soft tissue thickness at implant site. MATERIALS AND METHODS:Soft tissue augmentation with XCM (test) or CTG (control) was performed at 60 implants in 60 patients at the time of implant uncovering. Measurements were performed by a blinded examiner at baseline, 3 and 6 months. Outcome measures included buccal soft tissue thickness (GT), apico-coronal keratinized tissue (KT), chair time and post-operative discomfort. Visual Analogue Scale (VAS) was used to evaluate patient satisfaction. RESULTS:After 6 months, the final GT increase was 0.9 ± 0.2 in the XCM group and 1.2 ± 0.3 mm in the CTG group, with a significant difference favouring the control group (0.3 mm; p = .0001). Both procedures resulted in similar final KT amount with no significant difference between treatments. XCM was associated with significant less chair-time (p < .0001), less post-operative pain (p < .0001), painkillers intake (p < .0001) and higher final satisfaction than CTG (p = .0195). CONCLUSION:CTG was more effective than XCM to increase buccal peri-implant soft tissue thickness.

journal_name

J Clin Periodontol

authors

Cairo F,Barbato L,Tonelli P,Batalocco G,Pagavino G,Nieri M

doi

10.1111/jcpe.12750

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

769-776

issue

7

eissn

0303-6979

issn

1600-051X

journal_volume

44

pub_type

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