Biao Kang, DDS, PhD,(a) Yi-min Zhao, DDS, PhD,(a) Xin-yi Zhao, DDS, PhD,(b) Guo-feng Wu, DDS, PhD,(a) and Chao Xie, DDS, PhD(a)
(a)Department of Prosthodontics and (b)Department of Dental Materials, College of Stomatology, The Fourth Military Medical University, Xi’an, P. R. China
Purpose: The purpose of this study was to investigate the bond strength performance of two facial prosthetic adhesives on human skin with or without immersion in water for different periods of time.The purpose of this study was to investigate the bond strength performance of two facial prosthetic adhesives on human skin with or without immersion in water for different periods of time.
Materials and Methods: Two facial prosthetic adhesives (silicone-based Secure2 Adhesive and acrylic polymer-based Daro B-200 ES) were used in this study. Silicone specimens (with the diameter of 5 mm) retained with facial prosthetic adhesive were submitted to tensile bond strength on five volunteers’ forearms skin with immersion in distilled water. According to different disposal time, four groups of 0, 1, 10, and 30 minutes of two adhesives were divided, respectively. The specimens were pulled off by use of a desktop material tester with a crosshead speed of 1 mm/minute. Ten specimens of each group were tested, and a total of 80 tests were carried out.
Results: Statistical analysis showed that for Secure2 Adhesive, tensile bond strength didn’t change after immersion for 30 minutes (p>0.05), while for Daro B-200 ES, the tensile bond strength reduced significantly after 10 minutes in water (p<0.05). Observation of the rupture mode showed that Daro-200-ES left more adhesive residue on skin than Secure2 Adhesive did (p<0.05).
Conclusion: Considering study methodology and limitations, it could be concluded that immersion in water didn’t influence the bond strength of silicone-based adhesive, whereas affected that of acrylic polymer-based adhesive . (Int Chin J Dent 2008; 8: 11-15.)
Key Words: prosthetic adhesive, silicone elastomer, tensile bond strength .