Influence of Thermal Cycles Number on Bond Strength of Metallic Brackets to Ceramic

Jurubeba, José Eliú Pereira; Costa, Ana Rosa; Correr-Sobrinho, Lourenço; Tubel, Carlos Alberto Malanconi; Correr, Américo Bortolazzo; Vedovello, Sílvia Amélia Scudeler; Crepaldi, Marcus Vinícius; Filho, Mário Vedovello

doi:10.1590/0103-6440201701217

Cited by 22 publications

(23 citation statements)

References 24 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Wattanawongpitak et al examined the effect of thermal stress (0; 500; and 5,000 cycles) on resin composites, finding that marginal and cavity gap numbers depended on the number of cycles [15]. Jurubeba et al reported that the bond strength of orthodontic adhesives was affected after >7,000 thermal cycles [16]. In this study, Knoop hardness values did not change between 1,000 and 10,000 cycles.…”

Section: Discussionmentioning

confidence: 48%

Effects of composition on the hardness of orthodontic adhesives

et al. 2020

View full text Add to dashboard Cite

Although there have been improvements in bracket systems precoated with adhesive, removal of adhesive remnants continues to be problematic. This study compared the hardness and maintainability of precoated adhesive with other commercial adhesives. Knoop hardness values were measured after light-or chemical-induced initial curing, immersion in distilled water at 37°C for 24 h and 1,000 and 10,000 thermal cycles after 24 h. Additionally, the forces required to move brackets by 0.5 mm were measured during bracket positioning, and brackets bonded to bovine enamel were examined by field-emission scanning electron microscopy. The Knoop hardness values of the precoated adhesives were lower than those of commercial resin composite adhesives, and hardness was dependent on the amount of filler in the resin matrix. The ability to maintain the device position may depend on the resin matrix composition. Precoated adhesives with less filler and more matrix material are light curable, and remnant resin may be easily removed.

show abstract

Section: Discussionmentioning

confidence: 48%

Effects of composition on the hardness of orthodontic adhesives

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Some factors as thermal cycling, silane application, fatigue, and artificial ageing may compromise the durability of the bond strength between orthodontic brackets and ceramic surface using bonding materials (2,10,11,23). The quality of the bond is determined by the specific treatment bonding used to improve bonding mechanisms between bracket-bonding materials (1).…”

Section: Discussionmentioning

confidence: 99%

“…Clinically, when the orthodontic brackets bonded on the ceramic are exposed to the oral environment failure can occur due to exposed to thermal, physical and chemical changes in the oral cavity during the orthodontic use (1). Thermal cycling is an alternative method to induce stress and regimens between 500 and 7,000 cycles have been used to understand the mechanisms that can cause deterioration and reduction in strength in the oral conditions before the mechanical tests (1,(9)(10)(11). The difference in the thermal expansion coefficients between different bonding materials can increase the stress and cause adhesion failure due to temperature variations (12).…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrofluoric Acid Concentration and Thermal Cycling on the Bond Strength of Brackets to Ceramic

et al. 2019

Self Cite

View full text Add to dashboard Cite

This study to evaluate the effects of different hydrofluoric acid (HF) concentrations and thermal cycling on the shear bond strength (SBS) of brackets to ceramic. Cylinders of ceramic were divided into 10 groups (n=15), according to HF concentrations: 1-1%;2-2.5%;3-5%;4-7.5%;5-10% (storage 24 h); 6-1%;7-2.5%;8-5%;9-7.5%; and, 10-10% (thermal cycling). All cylinders were etched for 60s and received one layer of silane. Metallic brackets were bonded to the cylinders using Transbond-XT, light activated for 40 s, using a LED (Radii Plus) and stored in deionized water at 37o C for 24h. The groups 6 to 10 were submitted to thermal cycling (7,000 cycles - 5o/55oC). SBS was performed in an Instron at crosshead speed of 1.0 mm/min. Data were submitted to two-way ANOVA and Tukey’s post-hoc test (α=0.05). The Adhesive Remaining Index (ARI) was evaluated at 40x magnification. The different HF acid concentrations influenced on the SBS of the brackets to ceramic (p<0.05). The thermal cycling decreased the SBS of the brackets to ceramic for all acid concentrations (p<0.05). The ARI showed a predominance of scores 0 for all groups, with an increase in scores 1, 2 and 3 for the group storage for 24 h. In conclusion, the different HF acid concentrations 5.0%, 7.5% and 10% influenced on the SBS of brackets to ceramic. The thermal cycling decreased significantly the SBS of brackets to ceramic.

show abstract

“…Los cuerpos de prueba fueron sometidos a la termociclación, donde los mismos pasaron por 500 ciclos térmicos con variaciones de temperatura entre 5 °C a 55 °C (ISO, 2015) (Caroline, 2015), y el tiempo de transferencia de 10 segundos entre los banos en agua desionizada (Trites et al, 2004;Yuasa et al, 2010;Jurubeba et al, 2017).…”

Section: Asperización Con Punta Diamantada (Dw)unclassified

Evaluación de la Resistencia de Unión de Brackets Ortodónticos Fijados a Cerámica de Disilicato de Litio

Peixoto¹,

de-Matos²,

Andrade³

et al. 2019

Int. J. Odontostomat.

View full text Add to dashboard Cite

PEIXOTO, N. M.; DE MATOS, J. D. M.; ANDRADE, V. C.; BOTTINO, M. A. & ZOGHEIB, L. V. Evaluación de la resistencia de unión de brackets ortodónticos fijados a cerámica de disilicato de litio. Int. J. Odontostomat., 13(2):207-218, 2019. RESUMEN: El objetivo de este trabajo consistió en evaluar la resistencia al cizallamiento de brackets ortodónticos cementados a una cerámica odontológica a base de disilicato de litio. Fueron confeccionadas 80 muestras rectangulares de cerámica vítrea a base de disilicato de litio. Las muestras fueron divididas inicialmente en 4 grupos de 20 discos según el tratamiento de superficie: ácido fosfórico 37 % por 30 segundos (HP); ácido hidrofluorhidro 10 % por 60 segundos (HF); óxido de aluminio durante 4 segundos (SB); y aspersión con punta diamantada durante 10 segundos (DW). Cada grupo fue dividido en dos subgrupos para la cementación de brackets Edgwise: metálico y cerámico. Los dos nuevos grupos fueron subdivididos en termociclados o no termociclados. Las muestras termocicladas pasaron por 500 ciclos con variaciones de temperatura entre 5 °C a 55 °C. Los valores numéricos obtenidos en la prueba de cizallamiento se sometieron al análisis estadístico descriptivo (media y desviación estándar), habiéndose realizado la prueba de normalidad Shapiro-Wilk y las pruebas no paramétricas de Kruskal-Wallis y Mann-Whitney. Se verificó que no hubo diferencia estadísticamente significativa en relación al tipo de tratamiento de superficie y la realización o no de termociclado, observándose diferencia estadísticamente significativa sólo en el tipo de bracket, siendo la resistencia de unión en el bracket metálico mayor que en el de cerámica. Así, el tipo de tratamiento de superficie y el envejecimiento por termociclaje no fueron decisivos en la resistencia de unión de brackets ortodónticos a la cerámica de disilicato de litio.

show abstract

Influence of Thermal Cycles Number on Bond Strength of Metallic Brackets to Ceramic

Cited by 22 publications

References 24 publications

Effects of composition on the hardness of orthodontic adhesives

Effects of composition on the hardness of orthodontic adhesives

Effect of Hydrofluoric Acid Concentration and Thermal Cycling on the Bond Strength of Brackets to Ceramic

Evaluación de la Resistencia de Unión de Brackets Ortodónticos Fijados a Cerámica de Disilicato de Litio

Contact Info

Product

Resources

About