We are using cookies to implement functions like login, shopping cart or language selection for this website and to create anonymized statistical reports of the usage. You will find more information in our privacy policy. By continuing to use our website, you agree to this. Yes, I agree
The Journal of Adhesive Dentistry
Login:
username:

password:

Plattform:

Forgotten password?

Registration

J Adhes Dent 18 (2016), No. 1     18. Feb. 2016
J Adhes Dent 18 (2016), No. 1  (18.02.2016)

Page 35-42, doi:10.3290/j.jad.a35514, PubMed:26814314


Five-year Effects of Chlorhexidine on the In Vitro Durability of Resin/Dentin Interfaces
Loguercio, Alessandro D. / Hass, Viviane / Gutierrez, Mario Felipe / Luque-Martinez, Issis Virginia / Szezs, Anna / Stanislawczuk, Rodrigo / Bandeca, Matheus Coelho / Reis, Alessandra
Purpose: To evaluate the effect of an acid containing 2% chlorhexidine (Ac/CHX) or a 2% CHX aqueous solution (Aq/CHX) on the immediate and 5-year bonding properties of resin/dentin interfaces produced by two adhesives. The presence of CHX in these interfaces was also evaluated under micro-Raman spectroscopy.
Materials and Methods: Forty-two molars were ground to expose a flat dentin surface. In the control group, the surfaces were etched with conventional phosphoric acid, and Prime&Bond NT (PB) and Adper Single Bond 2 (SB) were applied. In Ac/CHX, an acid containing 2% CHX was applied after adhesive application. In the Aq/CHX group, an aqueous solution of 2% CHX was applied for 60 s after etching. After placing the restoration, specimens were prepared and tested using the microtensile bond strength test (μTBS, 0.5 mm/min) immediately or after 5 years. For nanoleakage (NL), specimens at each period were immersed in silver nitrate solution and examined by EDX-SEM. In addition, specimens at each period underwent examination for CHX using micro-Raman spectroscopy. Data were submitted to appropriate statistical analysis (a = 0.05).
Results: After 5 years, NL was more pronounced in the control than in the Ac/CHX or Aq/CHX (p < 0.001). Significant reductions in the μTBS were observed for all groups; however, they were more pronounced for the control (p < 0.001). CHX was still present in the hybrid layers Ac/CHX or Aq/CHX groups after 5 years.
Conclusion: The use of a 2% chlorhexidine-containing acid or the application of an aqueous CHX primer may increase the long-term stability of resin/dentin interfaces.

Keywords: adhesive systems, chlorhexidine, water sorption, nanoleakage, microtensile bond strength, longevity
fulltext (no access granted) order article as PDF-file (20.00 €)