Evaluation of Regular Market Ethyl Cyanoacrylate Cytotoxicity for Human Gingival Fibroblasts and Osteoblasts

Does cyanoacrylate have the best postoperative outcomes after third molar extractions when compared to conventional sutures? A systematic review and meta-analysis

Purpose

Tissue synthesis is extremely important for the attenuation of postoperative discomforts, as it keeps the tissues coapted, accelerates the healing process, and reduces the bleeding period of the surgical wound. Thus, this study aimed to systematically review the results of clinical trials that compared the use of cyanoacrylate with conventional sutures after third molars extraction.

Materials and methods

Searches were conducted on MEDLINE (via PubMed), Cochrane Central Registry of Controlled Trials (CENTRAL), Virtual Health Library (VHL), and Web of Science. Articles published up to February 20, 2022, were included. No restrictions were imposed on data or language of publication.

Results

A total of 8 studies (5 randomized controlled trials and 3 non-randomized comparative clinical studies) were included in this review and five studies were included in the meta-analysis, comprising 440 patients. The use of cyanoacrylate promoted better results in pain reduction in the first postoperative day when compared to the use of conventional suture (SMD: -1.01; 95%CI -1.90 to -0.12). Cyanoacrylate group promoted significant but borderline edema reduction compared to conventional sutures in the 7th postoperative day (SMD: -0.24, 95%CI -0.46 to -0.01, I2 = 0 %). For the trismus outcome, in all periods evaluated no differences were found between the groups.

Conclusion

Although promising results, there is no high-quality evidence to suggest the use of cyanoacrylate was better than conventional sutures.

Medical Adhesives and Their Role in Laparoscopic Surgery—A Review of Literature

Laparoscopic surgery is undergoing rapid development. Replacing the traditional method of joining cut tissues with sutures or staples could greatly simplify and speed up laparoscopic procedures. This alternative could undoubtedly be adhesives. For decades, scientists have been working on a material to bond tissues together to create the best possible conditions for tissue regeneration. The results of research on tissue adhesives achieved over the past years show comparable treatment effects to traditional methods. Tissue adhesives are a good alternative to surgical sutures in wound closure. This article is a review of the most important groups of tissue adhesives including their properties and possible applications. Recent reports on the development of biological adhesives are also discussed.

Fixation of free gingival grafts with cyanoacrylate glues: A histomorphometric and immunohistochemical study

Aim

The objective of this study was to evaluate the inflammatory process resulting from the use of two cyanoacrylate-based adhesives to stabilize grafts.

Methodology

A total of 45 male Wistar rats were randomly divided into three groups (n = 15/group) treated with ethyl cyanoacrylate glue (TG1), octyl-2-cyanoacrylate glue (TG2) or suture threads (CG). After de-epithelialization in the anterior gingival region of the mandible, the graft was removed from the donor site (hard palate), taken to the recipient site and stabilized according to the protocol of each group. After 7, 14, and 45 days, the animals were euthanized. The graft area was analysed macroscopically, histologically, histochemically (Masson trichrome), and immunohistochemically positive cell count for TGF-β, α-SMA, RANKL, OPG, FGF, and IL-10. The Kruskal-Wallis/Dunn test (SPSS 20.0, p < 0.05) was used for analysis.

Results

There was no difference in the clinical parameters among the three groups, but TG1 showed the lowest mononuclear inflammatory cell count and the highest amount of total collagen. FGF immunoexpression was significantly higher for the CG group, but the TG2 showed a significant reduction in the RANKL/OPG ratio.

Conclusion

TG1 had a mild inflammatory response and a higher collagen deposition than other glues, and TG2 had a reduction in the RANKL / OPG ratio.