Resin-dentin bonds to EDTA-treated vs. acid-etched dentin using ethanol wet-bonding. Part II: Effects of mechanical cycling load on microtensile bond strengths

Salvatore Sauro, Manuel Toledano, Fatima Sánchez Aguilera, Francesco Mannocci, David Henry Pashley, Franklin Chi Meng Tay, Timothy F. Watson, Raquel Osorio

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Objective: To compare microtensile bond strengths (MTBS) subsequent to load cycling of resin bonded acid-etched or EDTA-treated dentin using a modified ethanol wet-bonding technique. Methods: Flat dentin surfaces were obtained from extracted human molars and conditioned using 37% H3PO4 (PA) (15 s) or 0.1 M EDTA (60 s). Five experimental adhesives and one commercial bonding agent were applied to the dentin and light-cured. Solvated experimental resins (50% ethanol/50% comonomers) were used as primers and their respective neat resins were used as the adhesives. The resin-bonded teeth were stored in distilled water (24 h) or submitted to 5000 loading cycles of 90 N. The bonded teeth were then sectioned in beams for MTBS. Modes of failure were examined by scanning electron microscopy. Results: The most hydrophobic resin 1 gave the lowest bond strength values to both acid and EDTA-treated dentin. The hydrophobic resin 2 applied to EDTA-treated dentin showed lower bond strengths after cycling load but this did not occur when it was bonded to PA-etched dentin. Resins 3 and 4, which contained hydrophilic monomers, gave higher bond strengths to both EDTA-treated or acid-etched dentin and showed no significant difference after load cycling. The most hydrophilic resin 5 showed no significant difference in bond strengths after cycling loading when bonded to EDTA or phosphoric acid treated dentin but exhibited low bond strengths. Significance: The presence of different functional monomers influences the MTBS of the adhesive systems when submitted to cyclic loads. Adhesives containing hydrophilic comonomers are not affected by cycling load challenge especially when applied on EDTA-treated dentin followed by ethanol wet bonding.

Original languageEnglish (US)
Pages (from-to)563-572
Number of pages10
JournalDental Materials
Volume27
Issue number6
DOIs
StatePublished - Jun 1 2011

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Ethylenediaminetetraacetic acid
Dentin
Edetic Acid
Ethanol
Resins
Acids
Adhesives
Monomers
Tooth
Cyclic loads
Phosphoric acid
Electron Scanning Microscopy
Scanning electron microscopy
Water
Light

Keywords

  • Cycling loading
  • Ethanol-saturated dentin
  • Hydrophobic hybrid layer
  • Microtensile bond strength
  • Scanning electron microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Dentistry(all)
  • Mechanics of Materials

Cite this

Resin-dentin bonds to EDTA-treated vs. acid-etched dentin using ethanol wet-bonding. Part II : Effects of mechanical cycling load on microtensile bond strengths. / Sauro, Salvatore; Toledano, Manuel; Aguilera, Fatima Sánchez; Mannocci, Francesco; Pashley, David Henry; Tay, Franklin Chi Meng; Watson, Timothy F.; Osorio, Raquel.

In: Dental Materials, Vol. 27, No. 6, 01.06.2011, p. 563-572.

Research output: Contribution to journalArticle

Sauro, Salvatore ; Toledano, Manuel ; Aguilera, Fatima Sánchez ; Mannocci, Francesco ; Pashley, David Henry ; Tay, Franklin Chi Meng ; Watson, Timothy F. ; Osorio, Raquel. / Resin-dentin bonds to EDTA-treated vs. acid-etched dentin using ethanol wet-bonding. Part II : Effects of mechanical cycling load on microtensile bond strengths. In: Dental Materials. 2011 ; Vol. 27, No. 6. pp. 563-572.
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abstract = "Objective: To compare microtensile bond strengths (MTBS) subsequent to load cycling of resin bonded acid-etched or EDTA-treated dentin using a modified ethanol wet-bonding technique. Methods: Flat dentin surfaces were obtained from extracted human molars and conditioned using 37{\%} H3PO4 (PA) (15 s) or 0.1 M EDTA (60 s). Five experimental adhesives and one commercial bonding agent were applied to the dentin and light-cured. Solvated experimental resins (50{\%} ethanol/50{\%} comonomers) were used as primers and their respective neat resins were used as the adhesives. The resin-bonded teeth were stored in distilled water (24 h) or submitted to 5000 loading cycles of 90 N. The bonded teeth were then sectioned in beams for MTBS. Modes of failure were examined by scanning electron microscopy. Results: The most hydrophobic resin 1 gave the lowest bond strength values to both acid and EDTA-treated dentin. The hydrophobic resin 2 applied to EDTA-treated dentin showed lower bond strengths after cycling load but this did not occur when it was bonded to PA-etched dentin. Resins 3 and 4, which contained hydrophilic monomers, gave higher bond strengths to both EDTA-treated or acid-etched dentin and showed no significant difference after load cycling. The most hydrophilic resin 5 showed no significant difference in bond strengths after cycling loading when bonded to EDTA or phosphoric acid treated dentin but exhibited low bond strengths. Significance: The presence of different functional monomers influences the MTBS of the adhesive systems when submitted to cyclic loads. Adhesives containing hydrophilic comonomers are not affected by cycling load challenge especially when applied on EDTA-treated dentin followed by ethanol wet bonding.",
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T1 - Resin-dentin bonds to EDTA-treated vs. acid-etched dentin using ethanol wet-bonding. Part II

T2 - Effects of mechanical cycling load on microtensile bond strengths

AU - Sauro, Salvatore

AU - Toledano, Manuel

AU - Aguilera, Fatima Sánchez

AU - Mannocci, Francesco

AU - Pashley, David Henry

AU - Tay, Franklin Chi Meng

AU - Watson, Timothy F.

AU - Osorio, Raquel

PY - 2011/6/1

Y1 - 2011/6/1

N2 - Objective: To compare microtensile bond strengths (MTBS) subsequent to load cycling of resin bonded acid-etched or EDTA-treated dentin using a modified ethanol wet-bonding technique. Methods: Flat dentin surfaces were obtained from extracted human molars and conditioned using 37% H3PO4 (PA) (15 s) or 0.1 M EDTA (60 s). Five experimental adhesives and one commercial bonding agent were applied to the dentin and light-cured. Solvated experimental resins (50% ethanol/50% comonomers) were used as primers and their respective neat resins were used as the adhesives. The resin-bonded teeth were stored in distilled water (24 h) or submitted to 5000 loading cycles of 90 N. The bonded teeth were then sectioned in beams for MTBS. Modes of failure were examined by scanning electron microscopy. Results: The most hydrophobic resin 1 gave the lowest bond strength values to both acid and EDTA-treated dentin. The hydrophobic resin 2 applied to EDTA-treated dentin showed lower bond strengths after cycling load but this did not occur when it was bonded to PA-etched dentin. Resins 3 and 4, which contained hydrophilic monomers, gave higher bond strengths to both EDTA-treated or acid-etched dentin and showed no significant difference after load cycling. The most hydrophilic resin 5 showed no significant difference in bond strengths after cycling loading when bonded to EDTA or phosphoric acid treated dentin but exhibited low bond strengths. Significance: The presence of different functional monomers influences the MTBS of the adhesive systems when submitted to cyclic loads. Adhesives containing hydrophilic comonomers are not affected by cycling load challenge especially when applied on EDTA-treated dentin followed by ethanol wet bonding.

AB - Objective: To compare microtensile bond strengths (MTBS) subsequent to load cycling of resin bonded acid-etched or EDTA-treated dentin using a modified ethanol wet-bonding technique. Methods: Flat dentin surfaces were obtained from extracted human molars and conditioned using 37% H3PO4 (PA) (15 s) or 0.1 M EDTA (60 s). Five experimental adhesives and one commercial bonding agent were applied to the dentin and light-cured. Solvated experimental resins (50% ethanol/50% comonomers) were used as primers and their respective neat resins were used as the adhesives. The resin-bonded teeth were stored in distilled water (24 h) or submitted to 5000 loading cycles of 90 N. The bonded teeth were then sectioned in beams for MTBS. Modes of failure were examined by scanning electron microscopy. Results: The most hydrophobic resin 1 gave the lowest bond strength values to both acid and EDTA-treated dentin. The hydrophobic resin 2 applied to EDTA-treated dentin showed lower bond strengths after cycling load but this did not occur when it was bonded to PA-etched dentin. Resins 3 and 4, which contained hydrophilic monomers, gave higher bond strengths to both EDTA-treated or acid-etched dentin and showed no significant difference after load cycling. The most hydrophilic resin 5 showed no significant difference in bond strengths after cycling loading when bonded to EDTA or phosphoric acid treated dentin but exhibited low bond strengths. Significance: The presence of different functional monomers influences the MTBS of the adhesive systems when submitted to cyclic loads. Adhesives containing hydrophilic comonomers are not affected by cycling load challenge especially when applied on EDTA-treated dentin followed by ethanol wet bonding.

KW - Cycling loading

KW - Ethanol-saturated dentin

KW - Hydrophobic hybrid layer

KW - Microtensile bond strength

KW - Scanning electron microscopy

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