Effect of salivary contamination of teeth on microtensile bond strength of various dentin bonding systems

Kyoung-Kyu Choi; Gil-Joo Ryu

doi:10.5395/JKACD.2003.28.3.203

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Original Article Effect of salivary contamination of teeth on microtensile bond strength of various dentin bonding systems: Kyoung-Kyu Choi, Gil-Joo Ryu; Journal of Korean Academy of Conservative Dentistry 2003;28(3):203-208.
DOI: https://doi.org/10.5395/JKACD.2003.28.3.203
Published online: May 31, 2003

Department of Conservative Dentistry, College of Dentistry, Kyung-Hee University, Korea.

Corresponding author (choikkyu@khu.ac.kr)

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Abstract
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Abstract

The purpose of this study was to evaluate the effect of salivary contamination of teeth on bonding efficacy of self-priming and self-etching DBSs. The materials used were Single Bond(SB, self-priming system, 3M), Unifil Bond(UB, self-etching system, GC), and Scotchbond Multi-Purpose Plus(SM, 3M) as control. Forty five human molars randomly allocated to three groups as dentin bonding systems tested and embedded in epoxy resin. Then the specimens were wet-ground to expose flat buccal enamel surface or flat occlusal dentin surface and cut bucco-lingually to form two halves with slow speed diamond saw. One of them was used under non-contamination, other under contamination with saliva. The bonding procedure was according to the manufacturer's directions and resin composite(Z-100, 3M Dental Products, St. Paul, MN) was built-up on the bonded surface 5mm high. The specimens were ground carefully at the enamel-composite interface with fine finishing round diamond bur to create an hour-glass shape yielding bonded surface areas of 1.5±0.1mm². The specimens were bonded to the modified microtensile testing apparatus with cyanoacrylate, attached to the universal testing machine and stressed in tension at a CHS of 1mm/min.. The tensile force at failure was recorded and converted to a tensile stress(MPa). Mean values and standard deviations of the bond strength are listed in table. One-way ANOVA was used to determine significant difference at the 95% level.

The bond strength of SBMP and SB were not affected by salivary contamination, but that of UB was significantly affected by salivary contamination. These results indicate that DBSs with total etch technique seems less likely affected by salivary contamination in bonding procedure.
Keywords: Contamination; Adhesive; Bond strength; Micro-tensile

REFERENCES

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Fig. 1

Microtensile bone strength to enamel (MPa±SD).

Fig. 2

Microtensile bone strength to dentin (MPa±SD).

Table 1

Dentin bonding variables8).

Table 2

Dentin bonding systems in this study used.

Table 3

Applying procedures for dentin bonding systems.

Table 4

Microtensile bond strength for different adhesives to enamel (MPa±SD).

Means with same superscript were not significantly (p>0.05) different.

Table 5

Microtensile bond strength for different adhesives to dentin (MPa±SD).

Means with same superscript were not significantly (p>0.05) different.

Tables & Figures

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Effect of salivary contamination of teeth on microtensile bond strength of various dentin bonding systems

J Korean Acad Conserv Dent. 2003;28(3):203-208. Published online May 31, 2003

DOI: https://doi.org/10.5395/JKACD.2003.28.3.203

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Figure

Effect of salivary contamination of teeth on microtensile bond strength of various dentin bonding systems

Fig. 1 Microtensile bone strength to enamel (MPa±SD).

Fig. 2 Microtensile bone strength to dentin (MPa±SD).

Fig. 1

Fig. 2

Effect of salivary contamination of teeth on microtensile bond strength of various dentin bonding systems

Table 1

Dentin bonding variables8).

Table 2

Dentin bonding systems in this study used.

Table 3

Applying procedures for dentin bonding systems.

Table 4

Microtensile bond strength for different adhesives to enamel (MPa±SD).

Means with same superscript were not significantly (p>0.05) different.

Table 5

Microtensile bond strength for different adhesives to dentin (MPa±SD).

Means with same superscript were not significantly (p>0.05) different.

Table 1 Dentin bonding variables8).

Table 2 Dentin bonding systems in this study used.

Table 3 Applying procedures for dentin bonding systems.

Table 4 Microtensile bond strength for different adhesives to enamel (MPa±SD).

Means with same superscript were not significantly (p>0.05) different.

Table 5 Microtensile bond strength for different adhesives to dentin (MPa±SD).