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Polymers 2016, 8(4), 147; doi:10.3390/polym8040147

Physical and Mechanical Evaluation of Five Suture Materials on Three Knot Configurations: An in Vitro Study

1
Department of Periodontics, School of Dentistry, Universitat Internacional de Catalunya (UIC), Barcelona 08195, Spain
2
Department of Periodontics and Endodontics, University at Buffalo, Buffalo 14260, NY, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Naozumi Teramoto
Received: 4 December 2015 / Revised: 21 March 2016 / Accepted: 25 March 2016 / Published: 20 April 2016
(This article belongs to the Special Issue Biodegradable Polymers)
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Abstract

The aim of this study was to evaluate and compare the mechanical properties of five suture materials on three knot configurations when subjected to different physical conditions. Five 5-0 (silk, polyamide 6/66, polyglycolic acid, glycolide-e-caprolactone copolymer, polytetrafluoroethylene) suture materials were used. Ten samples per group of each material were used. Three knot configurations were compared A.2=1=1 (forward–forward–reverse), B.2=1=1 (forward–reverse–forward), C.1=2=1 (forward–forward–reverse). Mechanical properties (failure load, elongation, knot slippage/breakage) were measured using a universal testing machine. Samples were immersed in three different pH concentrations (4,7,9) at room temperature for 7 and 14 days. For the thermal cycle process, sutures were immersed in two water tanks at different temperatures (5 and 55 °C). Elongation and failure load were directly dependent on the suture material. Polyglycolic acid followed by glycolide-e-caprolactone copolymer showed the most knot failure load, while polytetrafluoroethylene showed the lowest (P < 0.001). Physical conditions had no effect on knot failure load (P = 0.494). Statistically significant differences were observed between knot configurations (P = 0.008). Additionally, individual assessment of suture material showed statistically significant results for combinations of particular knot configurations. Physical conditions, such as pH concentration and thermal cycle process, have no influence on suture mechanical properties. However, knot failure load depends on the suture material and knot configuration used. Consequently, specific suturing protocols might be recommended to obtain higher results of knot security. View Full-Text
Keywords: suture materials; failure load; physical conditions; knot configuration; knot slippage suture materials; failure load; physical conditions; knot configuration; knot slippage
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Abellán, D.; Nart, J.; Pascual, A.; Cohen, R.E.; Sanz-Moliner, J.D. Physical and Mechanical Evaluation of Five Suture Materials on Three Knot Configurations: An in Vitro Study. Polymers 2016, 8, 147.

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