The Use of a Soft Tissue Substitute at Immediate Postextractive Implants to Reduce Tissue Shrinkage: One-Year Results from a Randomized Controlled Trial
Int J Periodontics Restorative Dent.2023 Jul-Aug;43(4):463-469.
doi: 10.11607/prd.5620.
Abstract
The aim of this randomized controlled trial (RCT) was to evaluate
whether placement of a soft tissue graft substitute (STGS) could
decrease peri-implant tissue shrinkage at immediate postextractive
implants. Twenty patients with one missing tooth between two adjacent
healthy teeth in esthetic areas and at least 4 mm of bone apical to the
tooth apex were randomly allocated (after tooth extraction) to receive
(n = 10; test group) or not receive (n = 10; control group) a
subepithelial buccal STGS. Implants were inserted with a torque of at
least 30 Ncm, and sites were grafted with a cancellous particulate
allograft. All patients were restored with nonoccluding immediate
provisional screw-retained crowns, replaced after 6 months by definitive
metal-ceramic crowns. One year after loading, no dropouts, crown or
implant failure, or complications occurred. No statistically significant
difference or trends in volume shrinkage, esthetics, peri-implant
marginal bone loss, and keratinized mucosa heights between the two
groups were observed. Acknowledging that the sample size was small, no
clinical benefit could be observed for the use of a STGS in immediate
postextractive implants.
Source: Dental Technology Blog - Category: Dentistry Source Type: news