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Three-dimensional changes of a porcine collagen matrix and free gingival grafts for soft tissue augmentation to increase the width of keratinized tissue around dental implants: a randomized controlled clinical study.
| Content Provider | Europe PMC |
|---|---|
| Author | Ramanauskaite, Ausra Obreja, Karina Müller, Katharina Melissa Schliephake, Carla Wieland, Johanna Begic, Amira Dahmer, Iulia Parvini, Puria Schwarz, Frank |
| Abstract | BackgroundEmerging clinical data points to the relevance of the presence of keratinized tissue (KT). Although apically positioned flap/vestibuloplasty along with free gingival graft (FGG) is considered as a standard intervention for augmenting KT, substitute materials appear to be a viable treatment alternative. So far, there is a lack of data investigating the dimensional changes at implant sites treated with soft-tissue substitutes or FGG.AimThe present study aimed at comparing three-dimensional changes of a porcine derived collagen matrix (CM) and FGG for increasing KT at dental implants over a 6-month follow-up period.Materials and MethodsThe study enrolled 32 patients exhibiting deficient KT width (i.e., < 2 mm) at the vestibular aspect who underwent soft tissue augmentation using either CM (15 patients/23 implants) or FGG (17 patients/31 implants). The primary outcome was defined as tissue thickness change (mm) at treated implant sites between 1- (S0), 3- (S1), and 6-months (S2). Secondary outcomes considered changes of KT width over a 6-month follow-up period, surgical treatment time, and patient-reported outcomes.ResultsDimensional analyses from S0 to S1 and from S0 to S2 revealed a mean decrease in tissue thickness of − 0.14 ± 0.27 mm and − 0.04 ± 0.40 mm in the CM group, and − 0.08 ± 0.29 mm and − 0.13 ± 0.23 mm in the FGG group, with no significant differences noted between the groups (3 months: p = 0.542, 6 months: p = 0.659). Likewise, a comparable tissue thickness decrease was observed from S1 to S2 in both groups (CM: − 0.03 ± 0.22 mm, FGG: − 0.06 ± 0.14 mm; p = 0.467). The FGG group exhibited a significantly greater KT gain after 1, 3 and 6 months compared to the CM group (1 month: CM: 3.66 ± 1.67 mm, FGG: 5.90 ± 1.58 mm; p = 0.002; 3 months: CM: 2.22 ± 1.44; FGG: 4.91 ± 1.55; p = 0.0457; 6 months: CM: 1.45 ± 1.13 mm, FGG: 4.52 ± 1.40 mm; p < 0.1). Surgery time (CM: 23.33 ± 7.04 min.; FGG: 39.25 ± 10.64 min.; p = 0.001) and postoperative intake of analgesics were significantly lower in the CM group (CM: 1.2 ± 1.08 tablets; FGG: 5.64 ± 6.39 tablets; p = 0.001).ConclusionsCM and FGG were associated with comparable three-dimensional thickness changes between 1 and 6 months. While a wider KT band could be established with FGG, the use of CM significantly reduced surgical time and patients´ intake of analgesics.Graphical abstract |
| Related Links | https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC10275822&blobtype=pdf |
| Journal | International Journal of Implant Dentistry [Int J Implant Dent] |
| Volume Number | 9 |
| DOI | 10.1186/s40729-023-00482-2 |
| PubMed Central reference number | PMC10275822 |
| Issue Number | 1 |
| PubMed reference number | 37326686 |
| e-ISSN | 21984034 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2023-06-16 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | Open |
| Rights License | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2023, corrected publication 2023 |
| Subject Keyword | Dental implants Free gingival graft Keratinized mucosa Soft tissue grafting Three-dimensional analysis |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine |
