Chemical Reactions Between Dentin and Bonding Agents

Renzo, M. Di; Ellis, T. H.; Domingue, A.; Bertrand, Lionel; Sacher, E.; Stangel, I.

doi:10.1080/00218469408027093

Cited by 16 publications

(12 citation statements)

References 2 publications

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“…2,6 In chemical bonds, a bonds between resin agents and collagen will generate strong amide bonds, namely interatomic primer bond/covalent bond. 12,14 In addition, there were hydrogen bonds, interfunctional group bonds between both compounds, including hydroxyl group, carboxylate, amino and carbonyl, and a complex reactions happened between dentin calcium ions and resin bonding agents. On the other hand, the mechanical bonds may occur because the bonding agents penetrate into dentin tubules, on irregularly dentin surfaces (microscopically forming slit, pore, crack and undercut).…”

Section: Resultsmentioning

confidence: 99%

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The fractographic analysis of three dentin bonding agents on tooth surface

Soetojo

2006

Dent. J. (Majalah Kedokteran Gigi)

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Section: Resultsmentioning

confidence: 99%

“…In the first place, the chemical bonding occurs when HEMA carbonyl groups interact with the dentin collagen amino groups which in turn generate amide or peptide bonds. 12,13 Conversely, the mechanical bonding can be explained below. In three-dimensional sense, the dentin collagen represents a network or braid of the fibril collagen.…”

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confidence: 99%

The fractographic analysis of three dentin bonding agents on tooth surface

Soetojo

2006

Dent. J. (Majalah Kedokteran Gigi)

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“…Previously, they studied the absorption of HEMA resin at dentine collagen characteristically by C-NMR. 12 The reduction of T 1 value of HEMA carbonyl esther carbon is bigger than at other carbon, which estimated will form hydrogen bond between HEMA carbonyl ester and dentine collagen. The amount of HEMA concentrations in solution and HEMA adsorption into collagen has correlation with tensile bond strength of resin at dentine.…”

Section: Discussionmentioning

confidence: 99%

The effect of humidity on peak value of HEMA carbonyl absorbance band

Soetojo

2006

Dent. J. (Majalah Kedokteran Gigi)

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Bond strength between 2-Hydroxyethyl methacrylate HEMA-based dentin bonding agent and dentin collagen had dentin collagen network carefully. So we need an optimal condition (optimal humidity) on dentin surface to obtain a maximal bonding between dentin bonding materials and dentin collagen.Besnault and Attal 8 expressing that at 50% and 60% humidity, bond strength of bonding materials at dentine is higher than at 80% and 90% humidity. At the minimum humidity, the amount of water around dentine is optimal. Water molecules can form hydrogen bond with collagen peptide, and then break hydrogen bond between molecules of fibril collagen. At drying procedure, fibrils will re-expansion again after collapse.Kemp 9 reported that HEMA carbonyl when reacting with amino collagen group, peak reduction of the mixture esther carbonyl and HEMA with collagen will happened at infra red spectrum. It can be assumed that there are many groups of carbonyl esther bonding with amino if there is a high peak reduction of HEMA carbonyl absorbance band. This means chemical bond between HEMA and collagen become stronger.The purpose of this research is to know the effect of humidity on peak value of the HEMA carbonyl absorbance band. In knowing, the smallest value of HEMA carbonyl absorbance band will also know the chemical bond strength between HEMA and dentine collagen maximally at optimal humidity.

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“…Perdigao 등 . 비록 상아질에 대한 HEMA의 접착 기 능은 완전히 이해되지 않았지만 HEMA는 흡수(adsorption)중 상아질에 있는 콜라겐과 화학적으로 반응하여 51,52) 레진 단량체의 침투를 조장함으로써 53) 복합레진과 상아질의 결합강도를 증가시키고 49,[54][55][56] , 복합레진 수복물의 변연봉쇄 를 향상시키는 57 Resin-dentin interface produced using One-Step on dry dentin (D group). There is 10 ㎛ thick gap (g) between composite (C) and dentin (D) and no discernible hybrid layer.…”

Section: 총괄 및 고찰unclassified

Effect of a rewetting agent on dentin adhesion

Cho

Park

Lee

2003

J Korean Acad Conserv Dent

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This study compared the dentin adhesion to composite resin according to air-dry, blot dry, application of rewetting agent on air-dry or blot dry dentin surface by microleakag test and SEM observation.For microleakage test, class V cavity preparations with dentinal margins were prepared on both buccal and lingual surfaces of 40 extracted human molars. For SEM observation, occlusal dentin of 20 extracted human molars were exposed.After etched the dentin, prepared teeth were randomly divided into four groups; D group: air dry for 10-15 sec., B group: blot dry with moist cotton pellet, D-R group: air dry and rewet with Aqua-Prep F for 20 sec., B-R group: blot dry and rewet with Aqua-Prep F for 20 sec.Treated cavities and surfaces were filled or constructed using One-Step adhesives and Aelitefil composite resins. Specimens were stored in distilled water for 24 hours. For microleakage test, the specimens were thermocycled and soaked into 2 % methylene blue. The specimens were sectioned longitudinally and evaluated for microleakage under steromicroscope. The data were statistically analysed by Kruskal-Wallis Test, Mann-Whitney and Wilcoxon signed ranked tests. For SEM observation, the specimens were bisectioned mesiodiatally. After decalcified and deproteinized, specimens were observed under SEM.The results of this study were as follows; 1. The microleakges on dentinal margin were the highest in D group compared with B group, D-R group, and B-R group(p<0.05). But there was no significant difference between B group, D-R group and B-R group. 2. D group showed gap and a few resin tags between dentin and composite resin. 3. B group, D-R group, and B-R groups showed close adaptation between dentin and composite resin. It showed that resin rags in B group were numerous and long, in D-R group were few and short, in B-R group were numerous and short or long. 4. Adhesive layer showed in D-R group (10 ㎛) and B-R group (3 ㎛)In conclusion, use of rewetting agent to dry dentin was efficient to dentin adhesion, also it did not provide reverse effect on blot dry dentin.

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Chemical Reactions Between Dentin and Bonding Agents

Cited by 16 publications

References 2 publications

The fractographic analysis of three dentin bonding agents on tooth surface

The fractographic analysis of three dentin bonding agents on tooth surface

The effect of humidity on peak value of HEMA carbonyl absorbance band

Effect of a rewetting agent on dentin adhesion

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