TY - JOUR
T1 - Effect of temperature on water sorption and solubility of dental adhesive resins
AU - Dhanpal, P.
AU - Yiu, C. K.Y.
AU - King, N. M.
AU - Tay, F. R.
AU - Hiraishi, N.
PY - 2009/2
Y1 - 2009/2
N2 - Objective: This study examined the effect of temperature on water sorption and solubility characteristics of four commercial dental adhesives. The null hypothesis tested was that temperature has no effect on the water sorption and solubility characteristics of these adhesives. Methods: The tested materials were: three-step etch-and-rinse (All-Bond 2, AB), two-step etch-and-rinse (One-Step, OS), two-step self-etch (Clearfil SE Bond, SE) and one-step self-etch (Clearfil S3 Bond, S3) adhesives. Seven resin disks (6 mm in diameter × 1 mm in thickness) were prepared from each tested material and were stored in deionized water at 23 °C, 37 °C and 55 °C. Water sorption and solubility of the resin disks were measured before and after water immersion and desiccation following two consecutive sorption and desorption cycles. The water sorption and solubility values obtained were analyzed using two-way ANOVA and Tukey's multiple comparison tests. The relationships between maximum water sorption, solubility and kinetics of water diffusion with temperature were evaluated by means of Pearson correlation statistic. Results: OS exhibited the highest water sorption and solubility values in the second sorption-desorption cycle at 55 °C (p < 0.001). This is followed by S3, SE and AB with no significant difference between SE and AB. Significant positive correlations were observed between maximum water sorption (r = 0.307, p < 0.01), solubility (r = 0.244, p < 0.05), water sorption (r = 0.651, p < 0.001) and desorption (r = 0.733, p < 0.001) diffusion coefficients (obtained using Fick's law of diffusion) with temperature in the second cycle. Significance: High temperatures increased water sorption of simplified adhesives. Such water sorption may contribute to the failure of resin-dentin bonds.
AB - Objective: This study examined the effect of temperature on water sorption and solubility characteristics of four commercial dental adhesives. The null hypothesis tested was that temperature has no effect on the water sorption and solubility characteristics of these adhesives. Methods: The tested materials were: three-step etch-and-rinse (All-Bond 2, AB), two-step etch-and-rinse (One-Step, OS), two-step self-etch (Clearfil SE Bond, SE) and one-step self-etch (Clearfil S3 Bond, S3) adhesives. Seven resin disks (6 mm in diameter × 1 mm in thickness) were prepared from each tested material and were stored in deionized water at 23 °C, 37 °C and 55 °C. Water sorption and solubility of the resin disks were measured before and after water immersion and desiccation following two consecutive sorption and desorption cycles. The water sorption and solubility values obtained were analyzed using two-way ANOVA and Tukey's multiple comparison tests. The relationships between maximum water sorption, solubility and kinetics of water diffusion with temperature were evaluated by means of Pearson correlation statistic. Results: OS exhibited the highest water sorption and solubility values in the second sorption-desorption cycle at 55 °C (p < 0.001). This is followed by S3, SE and AB with no significant difference between SE and AB. Significant positive correlations were observed between maximum water sorption (r = 0.307, p < 0.01), solubility (r = 0.244, p < 0.05), water sorption (r = 0.651, p < 0.001) and desorption (r = 0.733, p < 0.001) diffusion coefficients (obtained using Fick's law of diffusion) with temperature in the second cycle. Significance: High temperatures increased water sorption of simplified adhesives. Such water sorption may contribute to the failure of resin-dentin bonds.
KW - Dental adhesives
KW - Resin
KW - Solubility
KW - Temperature
KW - Water sorption
UR - http://www.scopus.com/inward/record.url?scp=58149161673&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=58149161673&partnerID=8YFLogxK
U2 - 10.1016/j.jdent.2008.10.004
DO - 10.1016/j.jdent.2008.10.004
M3 - Article
C2 - 19062151
AN - SCOPUS:58149161673
SN - 0300-5712
VL - 37
SP - 122
EP - 132
JO - Journal of Dentistry
JF - Journal of Dentistry
IS - 2
ER -