Single-step, self-etch adhesives behave as permeable membranes after polymerization. Part I. Bond strength and morphologic evidence

Franklin Chi Meng Tay, David Henry Pashley, Byong Suh, Ricardo Carvalho, Michael Miller

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

Purpose: To test the hypotheses that microtensile bond strengths of single-step, self-etch adhesives to hydrated dentin are adversely affected by delayed-activation of a light-cured composite, as well as the use of a chemical-cured composite. Methods: Seven commercially available and one experimental single-step, self-etch adhesives were bonded to hydrated human dentin. A dual-cured composite was used and activated using: [1] the light-cured mode (base paste only - control), [2] the chemical-cured mode (base and catalyst pastes, in the dark); and [3] delayed light-activation (base syringe only, left on top of cured adhesives in the dark for 20 minutes before activation). After micro-tensile bond strength evaluation, fractured samples were examined using SEM. Intact, unstressed interfaces of [1] and [3] were examined with TEM. Microtensile bond strengths were also evaluated for selected adhesives bonded to dehydrated dentin and coupled with the composite activated by [2] or [3]. Results: For all adhesives, bond strengths decreased significantly to bonded hydrated dentin when the composites were activated with [2] or [3] (P< 0.001). Whereas the hybrid layer-adhesive interface was intact, water-blisters that developed along the adhesive-composite interface in these two modes were responsible for the decline in bond strength. When bonded to dehydrated dentin, delayed light-activation of the light-cured composite did not result in compromised bond strength. The results of chemical-cured composites improved but were more variable and system-dependent.

Original languageEnglish (US)
Pages (from-to)271-278
Number of pages8
JournalAmerican journal of dentistry
Volume17
Issue number4
StatePublished - Aug 1 2004

Fingerprint

Polymerization
Adhesives
Dentin
Membranes
Light
Ointments
Tensile Strength
Syringes
Blister
Water

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Single-step, self-etch adhesives behave as permeable membranes after polymerization. Part I. Bond strength and morphologic evidence. / Tay, Franklin Chi Meng; Pashley, David Henry; Suh, Byong; Carvalho, Ricardo; Miller, Michael.

In: American journal of dentistry, Vol. 17, No. 4, 01.08.2004, p. 271-278.

Research output: Contribution to journalArticle

@article{b7a53b9fcb7b45868778939ffafe145a,
title = "Single-step, self-etch adhesives behave as permeable membranes after polymerization. Part I. Bond strength and morphologic evidence",
abstract = "Purpose: To test the hypotheses that microtensile bond strengths of single-step, self-etch adhesives to hydrated dentin are adversely affected by delayed-activation of a light-cured composite, as well as the use of a chemical-cured composite. Methods: Seven commercially available and one experimental single-step, self-etch adhesives were bonded to hydrated human dentin. A dual-cured composite was used and activated using: [1] the light-cured mode (base paste only - control), [2] the chemical-cured mode (base and catalyst pastes, in the dark); and [3] delayed light-activation (base syringe only, left on top of cured adhesives in the dark for 20 minutes before activation). After micro-tensile bond strength evaluation, fractured samples were examined using SEM. Intact, unstressed interfaces of [1] and [3] were examined with TEM. Microtensile bond strengths were also evaluated for selected adhesives bonded to dehydrated dentin and coupled with the composite activated by [2] or [3]. Results: For all adhesives, bond strengths decreased significantly to bonded hydrated dentin when the composites were activated with [2] or [3] (P< 0.001). Whereas the hybrid layer-adhesive interface was intact, water-blisters that developed along the adhesive-composite interface in these two modes were responsible for the decline in bond strength. When bonded to dehydrated dentin, delayed light-activation of the light-cured composite did not result in compromised bond strength. The results of chemical-cured composites improved but were more variable and system-dependent.",
author = "Tay, {Franklin Chi Meng} and Pashley, {David Henry} and Byong Suh and Ricardo Carvalho and Michael Miller",
year = "2004",
month = "8",
day = "1",
language = "English (US)",
volume = "17",
pages = "271--278",
journal = "American Journal of Dentistry",
issn = "0894-8275",
publisher = "Mosher and Linder, Inc",
number = "4",

}

TY - JOUR

T1 - Single-step, self-etch adhesives behave as permeable membranes after polymerization. Part I. Bond strength and morphologic evidence

AU - Tay, Franklin Chi Meng

AU - Pashley, David Henry

AU - Suh, Byong

AU - Carvalho, Ricardo

AU - Miller, Michael

PY - 2004/8/1

Y1 - 2004/8/1

N2 - Purpose: To test the hypotheses that microtensile bond strengths of single-step, self-etch adhesives to hydrated dentin are adversely affected by delayed-activation of a light-cured composite, as well as the use of a chemical-cured composite. Methods: Seven commercially available and one experimental single-step, self-etch adhesives were bonded to hydrated human dentin. A dual-cured composite was used and activated using: [1] the light-cured mode (base paste only - control), [2] the chemical-cured mode (base and catalyst pastes, in the dark); and [3] delayed light-activation (base syringe only, left on top of cured adhesives in the dark for 20 minutes before activation). After micro-tensile bond strength evaluation, fractured samples were examined using SEM. Intact, unstressed interfaces of [1] and [3] were examined with TEM. Microtensile bond strengths were also evaluated for selected adhesives bonded to dehydrated dentin and coupled with the composite activated by [2] or [3]. Results: For all adhesives, bond strengths decreased significantly to bonded hydrated dentin when the composites were activated with [2] or [3] (P< 0.001). Whereas the hybrid layer-adhesive interface was intact, water-blisters that developed along the adhesive-composite interface in these two modes were responsible for the decline in bond strength. When bonded to dehydrated dentin, delayed light-activation of the light-cured composite did not result in compromised bond strength. The results of chemical-cured composites improved but were more variable and system-dependent.

AB - Purpose: To test the hypotheses that microtensile bond strengths of single-step, self-etch adhesives to hydrated dentin are adversely affected by delayed-activation of a light-cured composite, as well as the use of a chemical-cured composite. Methods: Seven commercially available and one experimental single-step, self-etch adhesives were bonded to hydrated human dentin. A dual-cured composite was used and activated using: [1] the light-cured mode (base paste only - control), [2] the chemical-cured mode (base and catalyst pastes, in the dark); and [3] delayed light-activation (base syringe only, left on top of cured adhesives in the dark for 20 minutes before activation). After micro-tensile bond strength evaluation, fractured samples were examined using SEM. Intact, unstressed interfaces of [1] and [3] were examined with TEM. Microtensile bond strengths were also evaluated for selected adhesives bonded to dehydrated dentin and coupled with the composite activated by [2] or [3]. Results: For all adhesives, bond strengths decreased significantly to bonded hydrated dentin when the composites were activated with [2] or [3] (P< 0.001). Whereas the hybrid layer-adhesive interface was intact, water-blisters that developed along the adhesive-composite interface in these two modes were responsible for the decline in bond strength. When bonded to dehydrated dentin, delayed light-activation of the light-cured composite did not result in compromised bond strength. The results of chemical-cured composites improved but were more variable and system-dependent.

UR - http://www.scopus.com/inward/record.url?scp=1942473521&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1942473521&partnerID=8YFLogxK

M3 - Article

VL - 17

SP - 271

EP - 278

JO - American Journal of Dentistry

JF - American Journal of Dentistry

SN - 0894-8275

IS - 4

ER -