________________________________________________________________________________________ KRESZINGER, M., B. TOHOLJ, A. AČANSKI, S. BALOŠ, M. CINCOVIĆ, M. PEĆIN, M. LIPAR, O. SMOLEC: Tensile strength retention of resorptive suture materials applied in the stomach wall -an in vitro study. Vet. arhiv 88, 235-243, 2018. ABSTRACTThe primary objective of this study was to determine whether polyglyconate or polydioxanone resorptive surgical materials are superior in terms of tensile strength retention in implantation in the cadaveric submucosa of the stomach wall. A secondary objective was to compare the tensile strength retention, in the same conditions, of polydioxanone suture materials produced by different manufacturers. Five samples of resorptive suture materials (polyglyconate (Maxon ® , Covidien), polydioxanone (PDS ® , Ethicon, PDX ® Kruuse, Surgicryl ® SMI), Catgut chromic, Kruuse) all diameter USP 2-0, were incubated in vitro in the cadaveric submucosa of the stomach wall for fifty days. Measurements of tensile strength were made on day 0 and the 10 th day. Polyglyconate (Maxon ® ) showed the greatest initial tensile strength. After 10 days of incubation in the submucosa of the stomach, the tensile strength decreases more rapidly for polyglyconate (Maxon ® ) in comparison to polydioxanone sutures, but they were still higher compared with the others on the 10 th day. Polydioxanone Surgicryl ® had the highest tensile strength retention -91.4% after 10 days of incubation in the submucosa of the stomach. Polydioxanone PDX ® maintained only 58.5% of its initial tensile strength. Polydioxanone Surgicryl ® had the highest initial Young's modulus.