Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: KEGG:D04166 (FeCl3)
 1,389 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In this study the efficacy of the primer on adhesion of MMA (TBB-O) resin to dentin was investigated. The primer consists of two parts. One is 6% MTYA and 70% HEMA aqueous solution, and the other is 2% glutaraldehyde aqueous solution. As an etching agents, 10% citric acid-3% FeCl3 (10-3), 40% phosphoric acid, 10% citric acid, and 0.5 M EDTA were used. After etching, the two parts of the primer were mixed well and applied on the etched surface. Then MMA (TBB-O) resin or p-MBA/MMA (TBB-O) resin was applied on the treated surface. The tensile bond strengths after storage in 37 degrees C water were measured. It revealed that the primer treatment increased the bond strength despite the kind of etching agents. Though the thickness of the resin reinforced dentin was the same as that of demineralized dentin, it was not proportional to the bond strength. Then the durability of the adhesion to dentin treated with primer was examined by the thermal cycling tests. After 2000 thermocycles between 5 degrees C and 55 degrees C, the decrease in the bond strength was very small.
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PMID:[Studies on adhesion of MMA (TBB-O) resin to dentin. The efficacy of the primer treatment]. 249 Feb 3

The quantitative microleakage of class V cementum (dentin) cavities restored with six dentinal bonding restorative systems was determined in vitro. Ninety extracted human permanent first and second mandibular and maxillary premolars were used in this study. Class V preparations were made in cementum (dentin) at the root facial surfaces. The preparations were restored with 1) a dentin bonding system containing 2% HEMA and BisGMA and a light-cured microfilled composite; 2) the same materials only substituting META/MMA base and TBB catalyst monomers for the BisGMA sealer; 3) a dentin bonding system containing 35% HEMA with META/MMA base and TBB catalyst, and a light-cured hybrid composite; 5) the same dentin bonding system only substituting the 35% glycerylmethacrylate for the 35% HEMA and using the microfilled composite; and 6) the previously described system with a substitution of 0.5 mol EDTA for the 10% citric acid -3% FeCl3. Fifteen teeth were restored with each procedure. The restorations were finished with 12-bladed carbide burs 15 min after placement, the teeth were stored in saline at 37 degrees C for 24 h, finished with Sof-Lex discs and then thermocycled in 2% methylene blue solution 500 times between 50 degrees C and 8 degrees C with a dwell time of 15 s. Quantitative microleakage was determined by a spectrophotometric dye-recovery method and expressed in microgram/dye/restoration. The data were analyzed by ANOVA, Student-Newman-Keuls and Kruskal-Wallis tests. The quantitative microleakage of the teeth restored with the adhesive systems containing 35% glyceryl methacrylate was significantly reduced. The bonding mechanism of glyceryl methacrylate is not known.
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PMID:Quantitative microleakage of some dentinal bonding restorative systems. 859 39