J Korean Acad Conserv Dent.  2002 May;27(3):299-309. 10.5395/JKACD.2002.27.3.299.

Microtensile bonding of one-step adhesives to smeared and non-smeared dentin

• Song YB
• Jin JH
• Lee SJ
• Lee KW

• KMID: 1987289
• DOI: http://doi.org/10.5395/JKACD.2002.27.3.299

Abstract

The purposes of this study were to evaluate the microtensile bond strength of one-step adhesives according to various dentin surface treatments and to observe the interface between resin(Z-100(TM)) and dentin under SEM. In this study forty-five non-caries extracted human molars and three adhesive systems were used; All-Bond 2(AB), One-Up Bond F(OU), AQ-Bond(AQ).; In Group 1, 2, 3, AB was used and tooth surfaces were treated by smearing(S), ultrasonic cleansing(US), etching(E) respectively. In Group 4, 5, 6, One-Up Bond F was used and tooth surfaces were also treated as the same way above. In Groups 7, 8, 9, AQ Bond was used and tooth surfaces were treated as the same way. Each specimen was prepared for microtensile bond testing, and were stored for 24hrs in 37degrees C distilled water. After that, microtensile bond strength for each specimen was measured. Specimens were fabricated to examine the failure patterns of interface between resin and dentin and observed under the SEM. The results were as follows; 1. The results(mean+/-SD) of microtensile test were group 1, 25.69+/-4.31MPa; group 2, 40.93+/-10.94MPa; group 3, 47.65+/-8.85MPa; group 4, 36.98+/-9.14MPa; group 5, 39.66+/-8.45MPa; group 6, 43.26+/-13.01MPa; group 7, 25.07+/-4.2MPa; group 8, 30.4+/-4.74MPa; group 9, 33.61+/-7.88MPa. 2. One-Up Bond F was showed the highest value of 36.98+/-9.14MPa in dentin surface treatment with smearing, and there were significant differences to the other groups(p<0.05). 3. All-Bond 2 was showed the highest value of 40.93+/-10.94MPa in dentin surface treatment with ultrasonic cleansing, but was no significant difference to One-Up Bond F(p>0.05). 4. All-Bond 2 was showed the highest value of 47.65+/-8.85MPa in dentin surface treatment with etching(10%phosphoric acid), and there were significant differences to the other groups(p<0.05). 5. All-Bond 2 was showed the highest value of 47.65+/-8.85MPa in dentin surface treatment according to manufacture's directions, but was no significant difference to One-Up Bond F(p>0.05). 6. AQ Bond was showed the lowest microtensile bond strength with various dentin surface treatment, and the were significant differences to the other groups(p<0.05).

MeSH Terms

Adhesives
Dentin
Dentin-Bonding Agents
Humans
Methacrylates
Molar
Tooth
Ultrasonics
Water
Adhesives
Dentin-Bonding Agents
Methacrylates
Water

Figure

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  Fig. 1 Schematic illustration of the microtensile test

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  Fig. 2 Microtensile tester

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  Fig. 3 Tensile Bond Strengths(MPa) of Adhesives Using Various Surface Treatments

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  Fig. 4 Tensile Bond Strength(MPa) According to Various Surface Treatments

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  Fig. 5 Tensile Bond Strengths(MPa) of Adhesives According to Manufacture s Directions

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  Fig. 6 Failure pattern

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  Fig. 7 All Bond 2 Smearing SEM A:fractured dental surface, B:fractured resin surface. 1:resin, 2:dentin, 3:separated resin

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  Fig. 8 All Bond 2 Ultrasonic cleaning SEM A:fractured dental surface, B:fractured resin surface. 1:resin, 2:separated resin

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  Fig. 9 All Bond 2 Etching SEM A:fractured dental surface, B:fractured resin surface. 1:dentin, 2:bonding agent, 3:resin, 4:separated resin

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  Fig. 10 One-Up Bond F Smearing SEM A:fractured dental surface, B:fractured resin surface. 1:bonding agent, 2:resin

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  Fig. 11 One-Up Bond F Ultrasonic cleaning SEM A:fractured dental surface, B:fractured resin surface. 1:dentin, 2:resin, 3:separated dentin

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  Fig. 12 One-Up Bond F Etching SEM A:fractured dental surface, B:fractured resin surface. 1:separated dentin, 2:dentin, 3:resin, 4:dentin

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  Fig. 13 AQ Bond Smearing SEM A:fractured dental surface, B:fractured resin surface. 1:separated resin, 2:dentin, 3:resin, 4:separated dentin

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  Fig. 14 AQ Bond Ultrasonic cleaning SEM A:fractured dental surface, B:fractured resin surface.

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  Fig. 15 AQ Bond Etching SEM A:fractured dental surface, B:fractured resin surface. 1:dentin, 2:separated resin, 3:separated dentin, 4:resin, 5:bonding agent

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