The Angle orthodontist · 2017
Niobium pentoxide phosphate invert glass as a mineralizing agent in an experimental orthodontic adhesive.
СтатьяНазвание и аннотация: Перевод пока не подготовлен
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Altmann Alinne Segatto Pires, Collares Fabricio Mezzomo, Balbinot Gabriela de Souza, Leitune Vicente Castelo Branco, Takimi Antonio Shigueaki, Samuel Susana Maria Werner
Аннотация
OBJECTIVE: The aim of this study was to develop an experimental orthodontic adhesive and evaluate how adding phosphate invert glass containing niobium pentoxide (PIG-Nb) affected the adhesive's properties.
MATERIAL AND METHODS: PIG-Nb was added at 1, 2.5, and 5 wt% to experimental adhesive (75 wt% bisphenol A methacrylate [BisGMA], 25 wt% triethylene glycol dimethacrylate [TEGDMA], 5 wt% colloidal silica and photoinitiator system). The adhesives were evaluated for mineral deposition, degree of conversion (DC), softening solvent by Knoop microhardness (KNH) variation, pH changes, and shear bond strength (SBS). One-way analysis of variance (ANOVA) (DC and ΔKHN%), two-way ANOVA (SBS), repeated measures ANOVA (pH), and paired test (KNH1 and KNH2) were used at a significance level of P < .05.
RESULTS: Adding PIG-Nb to orthodontic adhesives induced deposition on its surface associated with a constant neutral pH. The SBS increased after immersion in artificial saliva, and the PIG-Nb5 exhibited less softening.
CONCLUSION: The addition of PIG-Nb into orthodontic adhesives induced mineral deposition. Experimental orthodontic adhesive containing 5% wt of PIG-Nb exhibited increased mineral deposition and suitable properties for orthodontic applications.
MATERIAL AND METHODS: PIG-Nb was added at 1, 2.5, and 5 wt% to experimental adhesive (75 wt% bisphenol A methacrylate [BisGMA], 25 wt% triethylene glycol dimethacrylate [TEGDMA], 5 wt% colloidal silica and photoinitiator system). The adhesives were evaluated for mineral deposition, degree of conversion (DC), softening solvent by Knoop microhardness (KNH) variation, pH changes, and shear bond strength (SBS). One-way analysis of variance (ANOVA) (DC and ΔKHN%), two-way ANOVA (SBS), repeated measures ANOVA (pH), and paired test (KNH1 and KNH2) were used at a significance level of P < .05.
RESULTS: Adding PIG-Nb to orthodontic adhesives induced deposition on its surface associated with a constant neutral pH. The SBS increased after immersion in artificial saliva, and the PIG-Nb5 exhibited less softening.
CONCLUSION: The addition of PIG-Nb into orthodontic adhesives induced mineral deposition. Experimental orthodontic adhesive containing 5% wt of PIG-Nb exhibited increased mineral deposition and suitable properties for orthodontic applications.
Предметные рубрики MeSH
Acid Etching, DentalAnalysis of VarianceAnimalsBisphenol A-Glycidyl MethacrylateCattleChemistry, PharmaceuticalDental BondingDental CementsDental Stress AnalysisGlassHardnessHydrogen-Ion ConcentrationIncisorLight-Curing of Dental AdhesivesMaterials TestingNiobiumOrthodontic AppliancesOrthodontic BracketsOxidesPhosphatesPolyethylene GlycolsPolymerizationPolymethacrylic AcidsSaliva, ArtificialShear StrengthSilicon DioxideSurface PropertiesTooth Remineralization