Effects of filler addition to bonding agents on shear bond strength

Oh, Young Kyun; Oh, Myung‐Hwan; Cho, Byeong-Hoon; Son, Ho-Hyun; Kwon, Hyuk-Choon; Um, Chung-Moon

doi:10.5395/jkacd.2002.27.1.044

Cited by 1 publication

(4 citation statements)

References 14 publications

(14 reference statements)

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“…18 The most prominent type of fracture seemed to be cohesive fracture in composite; the same finding was recorded by other studies. 14,17 Within limitation of this in vitro study, incorporation of 5% and 10% titanium dioxide-doped phosphate glass into universal dental adhesive had no significant effect on the hybrid layer and SBS of resin composite to dentin. Therefore, the null hypothesis was rejected.…”

Section: Discussionmentioning

confidence: 78%

“…It is an important investigation done to mimic the oral environment. 17 Miljkovic et al reported that a decrease in what was an initially high SBS was observed in certain adhesives, which is why thermocycling is important. 29 The finding was supported by a previous study that described reduced bond strengths after a thermocycling process of 5,000 cycles.…”

Section: Discussionmentioning

confidence: 99%

“…18 The most prominent type of fracture seemed to be cohesive fracture in composite; the same finding was recorded by other studies. 14 17…”

Section: Discussionmentioning

confidence: 99%

“…16 The teeth were then taken out, loaded onto the SBS testing machine, and subjected to force using a notched arm at a crosshead speed of 0.5 mm/min until failure. 17…”

Section: Methodsmentioning

confidence: 99%

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Hybrid Layer, Shear Bond Strength, and Fracture Patterns of Titanium Dioxide–Doped Phosphate Glass–Filled Universal Dental Adhesives

Husein,

Seoudi,

El-Damanhoury

et al. 2024

European Journal of General Dentistry

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Objectives The aim of the study was to explore the potential effects of incorporating 5 and 10 wt% of TiO2-doped phosphate glass powder as fillers into the universal adhesive system. Materials and Methods Human permanent premolars and molars were used in the study. Five and 10 wt% of TiO2-doped phosphate glass powder as fillers were added into the universal adhesive system. Unmodified universal adhesive was used as control. The effects of the added filler in the universal adhesive were examined on hybrid layer formation at the resin composite and dentine interface (mesio-occlusal-distal [MOD] cavities) under scanning electron microscope (SEM), shear bond strength (SBS) of resin composite to dentine using shear bond testing machine, and the patterns of fracture at the resin composite–dentin interface, which were examined under stereomicroscope. The SBS analyses were performed with (8 samples per group, n = 24) and without (8 samples per group, n = 24) 5,000 cycles of thermocycling. Statistical Analysis One-way analysis of variance (ANOVA) was used to analyze the data of the SBS. For bond strength, the effects of adding fillers into the universal adhesive were analyzed. Results The SEM images showed that the hybrid layers were similar in all the groups of unmodified and modified adhesives. An ANOVA test revealed that the SBSs of control and modified adhesives were not significantly different before (p = 0.15) or after (p = 0.39) thermocycling for all the groups. The patterns of fracture revealed various types of fracture in all adhesive groups including composite resin, adhesive, and dentine failure. Composite resin fractures are the most encountered pattern of fracture. Conclusion Adding 5 and 10 wt% of TiO2 into universal adhesive did not adversely affect the hybrid layer, SBS, or mode of failure of composite resin to dentine. The pattern of fracture at the resin composite and dentine interface showed a favorable bonding with more cohesive than adhesive failure, particularly with the 5 wt% glass-modified adhesive group.

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Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

“…18 The most prominent type of fracture seemed to be cohesive fracture in composite; the same finding was recorded by other studies. 14 17…”

Section: Discussionmentioning

confidence: 99%

“…16 The teeth were then taken out, loaded onto the SBS testing machine, and subjected to force using a notched arm at a crosshead speed of 0.5 mm/min until failure. 17…”

Section: Methodsmentioning

confidence: 99%

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