A comparative study of cyanoacrylate-based tissue adhesive and surgical sutures on marginal flap stability following coronally advanced flap

Abstract

Abstract Introduction: The present study evaluated the biomechanical characteristics of cyanoacrylate-based tissue adhesive (TA) compared to surgical sutures in coronally advanced flap (CAF) procedures using an ex-vivo model. Material and Methods Thirty-six half pig mandibles were divided into 3 groups, n = 12 each: (I) CAF fixed with sutures (sling and tag suture technique), (II) CAF fixed with TA, and (III) CAF fixed with sutures and TA. At mandibular molars, gingival recession defects extending 3 mm apical to the cemento-enamel junction (CEJ) were created. CAF procedures were performed using a split-full-split approach, with coronal advancement of the flap to 1 mm above the marked CEJ and stabilization according to the respective group I-III. Marginal flap stability against pull-of forces (maximum tensile force) was measured with an universal material testing machine until the CEJ became visible. Results The comparison between the groups I-III demonstrated a significantly increased maximum tensile force for the TA (II) compared to the suture group (I) (p < 0.001). A significantly increased maximum tensile force was found for the suture and TA (III) compared to the suture group (I) (p < 0.001). There was also a significantly increased maximum tensile force in the suture and TA (III) compared to the TA group (II) (p < 0.001). Conclusion The results suggest that cyanoacrylate-based TA can increase marginal flap stability compared to sutures in CAF procedures. Clinical Relevance: Cyanoacrylate-based TA can be considered as a useful and valuable adjunct to conventional suturing techniques in periodontal plastic surgery, especially in cases where high flap stability is required.