Microtensile bond strength of prehybridized dentin

storage time and surface treatment effects.

Alvaro L K Dillenburg, Clarissa G. Soares, Maria Paula G Paranhos, Ana Maria Spohr, Alessandro D. Loguercio, Luis Henrique Burnett

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Purpose: This study evaluated the effect of surface treatments of the prepolymerized adhesive layer in the immediate dentin sealing technique (IDS) on the microtensile bond strength of two-step etch-and-rinse adhesive systems. Materials and Methods: The occlusal dentin surfaces of 60 human third molars were exposed and Adper Single Bond 2 (SB) or Prime & Bond NT (PB) adhesive systems were applied (control groups). Immediately afterwards, the temporary cement RelyXTemp NE was applied on the bonded dentin surface, and the teeth were stored in artificial saliva for 48 h or 4 months. After the storage time, the temporary cement layer was removed and the following surface treatments were applied: aluminum oxide (AO), 37% phosphoric acid (PA), or AO+PA. Next, a second adhesive layer was applied for each adhesive system, and a composite resin block restoration (Z250) was built. The specimens were cut and submitted to microtensile strength (µTBS) testing. The adhesive layer thickness (ALT) was evaluated in other specimens from all groups by SEM. The fracture pattern was evaluated in all sticks tested by SEM. µTBS and ALT values were analyzed with two-way ANOVA and Tukey’s test (α = 0.05). Results: The highest µTBS, similar to the control, was obtained with aluminum oxide and phosphoric acid (AO+PA) for both adhesives systems. The use of aluminum oxide alone (AO) or associated with phosphoric acid (AO+PA) showed values close to those of the control groups in relation to the ALT. The failure pattern was the same for control groups and AO +PA groups. Conclusion: Dentin prehybridization can improve the adhesive bond strength if the bonded surface is treated with airborne aluminum oxide particle abrasion associated with 37% phosphoric acid, followed by application of a second adhesive layer.

Original languageEnglish (US)
Pages (from-to)231-237
Number of pages7
JournalThe journal of adhesive dentistry
Volume11
Issue number3
DOIs
StatePublished - Jun 1 2009

Fingerprint

Dentin
Adhesives
Aluminum Oxide
Control Groups
Artificial Saliva
Third Molar
phosphoric acid
Composite Resins
Analysis of Variance
Tooth

Keywords

  • Microtensile bond strength
  • Prehybridized dentin
  • Resin coating technique
  • Storage time

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Dillenburg, A. L. K., Soares, C. G., Paranhos, M. P. G., Spohr, A. M., Loguercio, A. D., & Burnett, L. H. (2009). Microtensile bond strength of prehybridized dentin: storage time and surface treatment effects. The journal of adhesive dentistry, 11(3), 231-237. https://doi.org/10.3290/j.jad.a15629

Microtensile bond strength of prehybridized dentin : storage time and surface treatment effects. / Dillenburg, Alvaro L K; Soares, Clarissa G.; Paranhos, Maria Paula G; Spohr, Ana Maria; Loguercio, Alessandro D.; Burnett, Luis Henrique.

In: The journal of adhesive dentistry, Vol. 11, No. 3, 01.06.2009, p. 231-237.

Research output: Contribution to journalArticle

Dillenburg, ALK, Soares, CG, Paranhos, MPG, Spohr, AM, Loguercio, AD & Burnett, LH 2009, 'Microtensile bond strength of prehybridized dentin: storage time and surface treatment effects.', The journal of adhesive dentistry, vol. 11, no. 3, pp. 231-237. https://doi.org/10.3290/j.jad.a15629
Dillenburg, Alvaro L K ; Soares, Clarissa G. ; Paranhos, Maria Paula G ; Spohr, Ana Maria ; Loguercio, Alessandro D. ; Burnett, Luis Henrique. / Microtensile bond strength of prehybridized dentin : storage time and surface treatment effects. In: The journal of adhesive dentistry. 2009 ; Vol. 11, No. 3. pp. 231-237.
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abstract = "Purpose: This study evaluated the effect of surface treatments of the prepolymerized adhesive layer in the immediate dentin sealing technique (IDS) on the microtensile bond strength of two-step etch-and-rinse adhesive systems. Materials and Methods: The occlusal dentin surfaces of 60 human third molars were exposed and Adper Single Bond 2 (SB) or Prime & Bond NT (PB) adhesive systems were applied (control groups). Immediately afterwards, the temporary cement RelyXTemp NE was applied on the bonded dentin surface, and the teeth were stored in artificial saliva for 48 h or 4 months. After the storage time, the temporary cement layer was removed and the following surface treatments were applied: aluminum oxide (AO), 37{\%} phosphoric acid (PA), or AO+PA. Next, a second adhesive layer was applied for each adhesive system, and a composite resin block restoration (Z250) was built. The specimens were cut and submitted to microtensile strength (µTBS) testing. The adhesive layer thickness (ALT) was evaluated in other specimens from all groups by SEM. The fracture pattern was evaluated in all sticks tested by SEM. µTBS and ALT values were analyzed with two-way ANOVA and Tukey’s test (α = 0.05). Results: The highest µTBS, similar to the control, was obtained with aluminum oxide and phosphoric acid (AO+PA) for both adhesives systems. The use of aluminum oxide alone (AO) or associated with phosphoric acid (AO+PA) showed values close to those of the control groups in relation to the ALT. The failure pattern was the same for control groups and AO +PA groups. Conclusion: Dentin prehybridization can improve the adhesive bond strength if the bonded surface is treated with airborne aluminum oxide particle abrasion associated with 37{\%} phosphoric acid, followed by application of a second adhesive layer.",
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