Functional monomer impurity affects adhesive performance

Yoshihara, Kazuhiro; Nagaoka, Noriyuki; Okihara, Takumi; Kuroboshi, Manabu; Hayakawa, Satoshi; Maruo, Yukinori; Nishigawa, Goro; Munck, Jan De; Yoshida, Yasuhiro; Meerbeek, Bart Van

doi:10.1016/j.dental.2015.09.019

Cited by 95 publications

(84 citation statements)

References 20 publications

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“…It has been reported that the purity of MDP and its concentration in the adhesive influences the chemical bonding potential . However, although previous studies have reported that the manufacturer of CU uses higher‐purity MDP than other manufacturers , in this study, its bond fatigue durability was lower than that of SU. The manufacturers provide no detailed information on the precise concentration of MDP, and also do not report on its purity, so it would be necessary to perform further work to measure these characteristics in order to provide a definite statement about the influence of the concentration and purity of this monomer.…”

Section: Discussionmentioning

confidence: 61%

“…The residual hydroxyapatite that remains around the collagen fibrils after the demineralization serves as a receptor for chemical interaction with MDP and subsequently contributes to adhesive performance . It has been reported that the purity of MDP and its concentration in the adhesive influences the chemical bonding potential . However, although previous studies have reported that the manufacturer of CU uses higher‐purity MDP than other manufacturers , in this study, its bond fatigue durability was lower than that of SU.…”

Section: Discussionmentioning

confidence: 70%

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Comparison between universal adhesives and two‐step self‐etch adhesives in terms of dentin bond fatigue durability in self‐etch mode

Tsujimoto

Barkmeier

Takamizawa

et al. 2017

European J Oral Sciences

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This aim of this study was to compare universal adhesives and two-step self-etch adhesives in terms of dentin bond fatigue durability in self-etch mode. Three universal adhesives - Clearfil Universal, G-Premio Bond, and Scotchbond Universal Adhesive - and three-two-step self-etch adhesives - Clearfil SE Bond, Clearfil SE Bond 2, and OptiBond XTR - were used. The initial shear bond strength and shear fatigue strength of resin composite bonded to adhesive on dentin in self-etch mode were determined. Scanning electron microscopy observations of fracture surfaces after bond strength tests were also made. The initial shear bond strength of universal adhesives was material dependent, unlike that of two-step self-etch adhesives. The shear fatigue strength of Scotchbond Universal Adhesive was not significantly different from that of two-step self-etch adhesives, unlike the other universal adhesives. The shear fatigue strength of universal adhesives differed depending on the type of adhesive, unlike those of two-step self-etch adhesives. The results of this study encourage the continued use of two-step self-etch adhesive over some universal adhesives but suggest that changes to the composition of universal adhesives may lead to a dentin bond fatigue durability similar to that of two-step self-etch adhesives.

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Section: Discussionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 70%

Comparison between universal adhesives and two‐step self‐etch adhesives in terms of dentin bond fatigue durability in self‐etch mode

Tsujimoto

Barkmeier

Takamizawa

et al. 2017

European J Oral Sciences

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“…Although the degradation process is different for TC and WS, in both cases hydrolytic degradation occurs in the vicinity of the interface between dentin and adhesive. Therefore, the water-resistant hydrophobic layer formed by MDP might contribute to bond durability 24,36) . Our study indicates that MDP plays an important role in enhancing the dentin bond durability of universal adhesive in ER mode.…”

Section: Discussionmentioning

confidence: 99%

Role of the functional monomer 10-methacryloyloxydecyl dihydrogen phosphate in dentin bond durability of universal adhesives in etch-&-rinse mode

et al. 2020

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This study aimed to determine the role of the 10-methacryloyloxydecyl dihydrogen phosphate (MDP) in dentin bond durability of universal adhesive in etch-&-rinse mode through bond strength tests after different degradation conditions. This study used the MDP-containing universal adhesive, Clearfil Universal Bond Quick (CU), and an experimental adhesive (NM) made with the same ingredients as CU, excluding MDP. Shear bond strength (SBS) to dentin were obtained in etch-&-rinse mode with or without MDP. CU in self-etch mode was used as a comparison. The groups were divided into three types: 1) subjected to thermal cycling; 2) subjected to long-term water storage; and 3) stored in water for 24 h, as a baseline. The discrepancies in the mean SBS of the CU and NM groups become prominent with prolonged degradation periods. This study indicates that the MDP in universal adhesive might play a key role in enhancing dentin bond quality even when etch-&-rinse mode is used.

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“…In the case of acidic methacrylate phosphates, an additional instability results from hydrolysis of the methacrylate ester bond in the presence of water, which is frequently used as a co-solvent in self-etching adhesives (28). Hydrolysis is catalyzed by the hydrogen ions of the phosphoric acid group (29).…”

Section: Ni-cr Alloy Glass-ceramic Composite Y-tzp Zro 2 ------------mentioning

confidence: 99%

Phosphoric and carboxylic methacrylate esters as bonding agents in self-adhesive resin cements

Liu

Meng

Sun³

et al. 2018

Exp Ther Med

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The aim of the present study was to investigate the effect of pH and phosphoric ester structure (phosphonate or phosphate) on the bond strength of different dental restorative materials. The following three self-adhesive resin cements were used in the present study: RelyX Unicem, Maxcem and Multilink Sprint The pH of each cement was measured using a pH meter. The cements were used to attach a variety of restorative materials to human dentin and the bond strength was measured by assessing shear strength using a universal testing machine. The pH values of RelyX Unicem, Maxcem and Multilink Sprint were 3.78, 1.78 and 3.42, respectively. Maxcem, a phosphate-based self-adhesive cement, was demonstrated to form the weakest bonds. No significant difference in bond strength was observed between RelyX Unicem and Multilink Sprint, which are phosphonate-based cements. The results of the present study suggest that the chemical structure of the functional monomer influences the performance of an adhesive material. Furthermore, the pH of acidic functional monomers containing phosphonate or phosphate groups has an effect on the strength of bonds formed between dentin and restorative materials.

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Functional monomer impurity affects adhesive performance

Cited by 95 publications

References 20 publications

Comparison between universal adhesives and two‐step self‐etch adhesives in terms of dentin bond fatigue durability in self‐etch mode

Comparison between universal adhesives and two‐step self‐etch adhesives in terms of dentin bond fatigue durability in self‐etch mode

Role of the functional monomer 10-methacryloyloxydecyl dihydrogen phosphate in dentin bond durability of universal adhesives in etch-&-rinse mode

Phosphoric and carboxylic methacrylate esters as bonding agents in self-adhesive resin cements

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