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The effect of different etching times of acidulated phosphate fluoride gel on the shear bond strength of high-leucite ceramics bonded to composite resin.
J Prosthet Dent. 2007 Jul; 98(1):17-23.JP

Abstract

STATEMENT OF PROBLEM

A 10-minute treatment with acidulated phosphate fluoride (APF) gel has been used as an alternative in ceramic surface etching before repairing with composite resin. However, the optimal etching time for APF gel is still unknown.

PURPOSE

The purpose of this study was to determine the in vitro shear bond strengths of composite resin on high-leucite ceramics after APF gel treatment over different time periods.

MATERIAL AND METHODS

One hundred and twenty high-leucite ceramic (Empress 1) specimens (12 mm in diameter and 1.5 mm thick) were prepared and divided into 12 groups (n=10). Ten experimental groups were surface treated with 1.23% APF gel, each group receiving 1 to 10 minutes of etching time in 1 minute increments. One group was treated with 9.6% hydrofluoric acid for 4 minutes and the final group received no treatment and served as a control. The surface condition of the treated specimens was analyzed under a scanning electron microscope (SEM). All specimens received a silane application and were bonded to a composite resin Filtek (Z250) cylinder with an adhesive system (Scotchbond Multi-Purpose Plus adhesive) and then stored in 100% humidity at 37 degrees C for 24 hours before shear bond strength testing in a universal testing machine. Mean bond strengths (MPa) were analyzed with 1-way ANOVA and the Tukey HSD test (alpha=.05).

RESULTS

Hydrofluoric acid etching produced the highest mean shear bond strength (SD) between composite resin and the ceramic (17.64 (1.48) MPa). Overall, APF gel etching produced lower bond strengths. No significant difference in mean bond strength (SD) was observed between etching with hydrofluoric acid and etching with APF gel for 7 to 10 minutes (15.21 (1.93) to 17.33 (1.43)). The lowest mean shear bond strengths (SD) were recorded in the untreated group (7.61 (1.03) MPa) (P<.05).

CONCLUSIONS

Within the limitations of this study, shear bond strength values between composite resin and high-leucite ceramics after etching with 1.23% APF gel for 7 to 10 minutes were not significantly different than that after etching with 9.6% hydrofluoric acid for 4 minutes.

Authors+Show Affiliations

Division of Crown and Bridge, Department of Conservative Dentistry, Prince of Songkla University, Songkhla, Thailand. boonlert.k@psu.ac.thNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17631170

Citation

Kukiattrakoon, Boonlert, and Kewalin Thammasitboon. "The Effect of Different Etching Times of Acidulated Phosphate Fluoride Gel On the Shear Bond Strength of High-leucite Ceramics Bonded to Composite Resin." The Journal of Prosthetic Dentistry, vol. 98, no. 1, 2007, pp. 17-23.
Kukiattrakoon B, Thammasitboon K. The effect of different etching times of acidulated phosphate fluoride gel on the shear bond strength of high-leucite ceramics bonded to composite resin. J Prosthet Dent. 2007;98(1):17-23.
Kukiattrakoon, B., & Thammasitboon, K. (2007). The effect of different etching times of acidulated phosphate fluoride gel on the shear bond strength of high-leucite ceramics bonded to composite resin. The Journal of Prosthetic Dentistry, 98(1), 17-23.
Kukiattrakoon B, Thammasitboon K. The Effect of Different Etching Times of Acidulated Phosphate Fluoride Gel On the Shear Bond Strength of High-leucite Ceramics Bonded to Composite Resin. J Prosthet Dent. 2007;98(1):17-23. PubMed PMID: 17631170.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effect of different etching times of acidulated phosphate fluoride gel on the shear bond strength of high-leucite ceramics bonded to composite resin. AU - Kukiattrakoon,Boonlert, AU - Thammasitboon,Kewalin, PY - 2007/7/17/pubmed PY - 2007/9/28/medline PY - 2007/7/17/entrez SP - 17 EP - 23 JF - The Journal of prosthetic dentistry JO - J Prosthet Dent VL - 98 IS - 1 N2 - STATEMENT OF PROBLEM: A 10-minute treatment with acidulated phosphate fluoride (APF) gel has been used as an alternative in ceramic surface etching before repairing with composite resin. However, the optimal etching time for APF gel is still unknown. PURPOSE: The purpose of this study was to determine the in vitro shear bond strengths of composite resin on high-leucite ceramics after APF gel treatment over different time periods. MATERIAL AND METHODS: One hundred and twenty high-leucite ceramic (Empress 1) specimens (12 mm in diameter and 1.5 mm thick) were prepared and divided into 12 groups (n=10). Ten experimental groups were surface treated with 1.23% APF gel, each group receiving 1 to 10 minutes of etching time in 1 minute increments. One group was treated with 9.6% hydrofluoric acid for 4 minutes and the final group received no treatment and served as a control. The surface condition of the treated specimens was analyzed under a scanning electron microscope (SEM). All specimens received a silane application and were bonded to a composite resin Filtek (Z250) cylinder with an adhesive system (Scotchbond Multi-Purpose Plus adhesive) and then stored in 100% humidity at 37 degrees C for 24 hours before shear bond strength testing in a universal testing machine. Mean bond strengths (MPa) were analyzed with 1-way ANOVA and the Tukey HSD test (alpha=.05). RESULTS: Hydrofluoric acid etching produced the highest mean shear bond strength (SD) between composite resin and the ceramic (17.64 (1.48) MPa). Overall, APF gel etching produced lower bond strengths. No significant difference in mean bond strength (SD) was observed between etching with hydrofluoric acid and etching with APF gel for 7 to 10 minutes (15.21 (1.93) to 17.33 (1.43)). The lowest mean shear bond strengths (SD) were recorded in the untreated group (7.61 (1.03) MPa) (P<.05). CONCLUSIONS: Within the limitations of this study, shear bond strength values between composite resin and high-leucite ceramics after etching with 1.23% APF gel for 7 to 10 minutes were not significantly different than that after etching with 9.6% hydrofluoric acid for 4 minutes. SN - 0022-3913 UR - https://www.unboundmedicine.com/medline/citation/17631170/The_effect_of_different_etching_times_of_acidulated_phosphate_fluoride_gel_on_the_shear_bond_strength_of_high_leucite_ceramics_bonded_to_composite_resin_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-3913(07)60033-X DB - PRIME DP - Unbound Medicine ER -