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Effect of different pretreatment methods on dentin bond strength of a one-step self-etch adhesive.
J Contemp Dent Pract. 2009 Jan 01; 10(1):41-8.JC

Abstract

AIM

The aim of this in vitro study was to evaluate the shear bond strength of a one-step self-etch adhesive to dentin pretreated with phosphoric acid, air abrasion, or laser.

METHODS AND MATERIALS

Fifty-six extracted non-carious human mandibular molars were mounted and the occlusal surfaces ground with a mechanical grinder to obtain flat occlusal dentin surfaces. The teeth were randomly divided into four groups of 14 teeth according to the different dentin surface pretreatment methods: Group I--acid, Group II--laser, Group III--air abrasion, Group IV (control)--no surface treatment. After applying a one-step self-etch adhesive system, Futura Bond NR, cylinders of Z250 composite resin were bonded to the dentin surfaces by transparent gelatin capsules (2.5 mm diameter; 3 mm high) and then polymerized. All specimens were stored in distilled water at 37 masculineC for 24 hours. Shear bond testing was carried out using an Universal testing machine with a crosshead speed of 0.5 mm/sec. Data were analyzed using the Kruskal Wallis and Mann-Whitney tests at a significance level of 0.05.

RESULTS

The bond strength of air abrasion (Group III) and the control group (Group IV) were statistically higher than both the acid (Group I) and laser (Group II) pretreatments (p < 0.05). No statistically significant differences were found in shear bond strength between surfaces treated with air abrasion and the control group (p > 0.05). Surfaces pretreated with laser (Group II) resulted in the lowest bond strength which was not statistically different from those pretreated with acid (Group I) (p > 0.05).

CONCLUSION

Surfaces pretreated with acid and laser adversely affected the bond strength of a one-step self-etch adhesive, Futura Bond NR, while pretreatment with air abrasion had no effect on bond strength.

CLINICAL SIGNIFICANCE

The pretreatment of dentin surfaces prior to self-etch adhesive seems to be unnecessary and defeats the original purpose of these systems.

Authors+Show Affiliations

Department of Conservative Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. ruyay@hacettepe.edu.trNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

19142255

Citation

Yazici, A Ruya, et al. "Effect of Different Pretreatment Methods On Dentin Bond Strength of a One-step Self-etch Adhesive." The Journal of Contemporary Dental Practice, vol. 10, no. 1, 2009, pp. 41-8.
Yazici AR, Karaman E, Ertan A, et al. Effect of different pretreatment methods on dentin bond strength of a one-step self-etch adhesive. J Contemp Dent Pract. 2009;10(1):41-8.
Yazici, A. R., Karaman, E., Ertan, A., Ozgunaltay, G., & Dayangac, B. (2009). Effect of different pretreatment methods on dentin bond strength of a one-step self-etch adhesive. The Journal of Contemporary Dental Practice, 10(1), 41-8.
Yazici AR, et al. Effect of Different Pretreatment Methods On Dentin Bond Strength of a One-step Self-etch Adhesive. J Contemp Dent Pract. 2009 Jan 1;10(1):41-8. PubMed PMID: 19142255.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of different pretreatment methods on dentin bond strength of a one-step self-etch adhesive. AU - Yazici,A Ruya, AU - Karaman,Emel, AU - Ertan,Atila, AU - Ozgunaltay,Gul, AU - Dayangac,Berrin, Y1 - 2009/01/01/ PY - 2009/1/15/entrez PY - 2009/1/15/pubmed PY - 2009/4/28/medline SP - 41 EP - 8 JF - The journal of contemporary dental practice JO - J Contemp Dent Pract VL - 10 IS - 1 N2 - AIM: The aim of this in vitro study was to evaluate the shear bond strength of a one-step self-etch adhesive to dentin pretreated with phosphoric acid, air abrasion, or laser. METHODS AND MATERIALS: Fifty-six extracted non-carious human mandibular molars were mounted and the occlusal surfaces ground with a mechanical grinder to obtain flat occlusal dentin surfaces. The teeth were randomly divided into four groups of 14 teeth according to the different dentin surface pretreatment methods: Group I--acid, Group II--laser, Group III--air abrasion, Group IV (control)--no surface treatment. After applying a one-step self-etch adhesive system, Futura Bond NR, cylinders of Z250 composite resin were bonded to the dentin surfaces by transparent gelatin capsules (2.5 mm diameter; 3 mm high) and then polymerized. All specimens were stored in distilled water at 37 masculineC for 24 hours. Shear bond testing was carried out using an Universal testing machine with a crosshead speed of 0.5 mm/sec. Data were analyzed using the Kruskal Wallis and Mann-Whitney tests at a significance level of 0.05. RESULTS: The bond strength of air abrasion (Group III) and the control group (Group IV) were statistically higher than both the acid (Group I) and laser (Group II) pretreatments (p < 0.05). No statistically significant differences were found in shear bond strength between surfaces treated with air abrasion and the control group (p > 0.05). Surfaces pretreated with laser (Group II) resulted in the lowest bond strength which was not statistically different from those pretreated with acid (Group I) (p > 0.05). CONCLUSION: Surfaces pretreated with acid and laser adversely affected the bond strength of a one-step self-etch adhesive, Futura Bond NR, while pretreatment with air abrasion had no effect on bond strength. CLINICAL SIGNIFICANCE: The pretreatment of dentin surfaces prior to self-etch adhesive seems to be unnecessary and defeats the original purpose of these systems. SN - 1526-3711 UR - https://www.unboundmedicine.com/medline/citation/19142255/Effect_of_different_pretreatment_methods_on_dentin_bond_strength_of_a_one_step_self_etch_adhesive_ DB - PRIME DP - Unbound Medicine ER -