Results: 217

Glass ionomer cements can be used for bonding orthodontic brackets after cancer radiation treatment?

Braz. dent. j; 29 (2), 2018
Abstract Patients undergoing radiotherapy treatment present more susceptibility to dental caries and the use of an orthodontic device increases this risk factor due to biofilm accumulation around the brackets. The objective of this study was to evaluate the shear bond strength to irradiated permanent tee...

Evaluation of shear bond strength and shear stress on zirconia reinforced lithium silicate and high translucency zirconia

J. oral res. (Impresa); 7 (1), 2018
This study evaluated the shear stress distribution on the adhesive interface and the bond strength between resin cement and two ceramics. For finite element analysis (FEA), a tridimensional model was made using computer-aided design software. This model consisted of a ceramic slice (10x10x2mm) partially ...

Acurácia da colagem virtual de acessórios ortodônticos em relação ao procedimento direto

A colagem de acessórios ortodônticos é considerada um dos fatores que mais interfere na expressão dos aparelhos pré-ajustados. Ambas as técnicas tradicionais de colagem, método direto e indireto, falham em alcançar a posição ideal. Novas perpectivas de refinamento dos protocolos têm sido apont...

Acurácia e precisão do método de colagem indireta de bráquetes ortodônticos utilizando tecnologia CAD/CAM

A colagem indireta pode ser definida como o posicionamento dos bráquetes ortodônticos em modelos, previamente à colagem clínica. A inclusão dos modelos digitais na ortodontia permite o planejamento virtual das posições dos acessórios ortodônticos. O objetivo deste estudo foi avaliar a acurácia ...

Current options concerning the endodontically-treated teeth restoration with the adhesive approach

Braz. oral res. (Online); 32 (supl.1), 2018
Abstract: Adhesive procedures have changed the way to restore endodontically treated teeth (ETT). It started with the shift from cast post-and-core to fiber post. The original focus on strength also shifted towards failure modes, revealing that catastrophic failures are still a concern when restoring end...

How to improve root canal filling in teeth subjected to radiation therapy for cancer

Abstract The aim of this study was to evaluate the influence of radiation therapy on root canal sealer push-out bond strength (BS) to dentin and the sealer/dentin interface after different final irrigation solutions (NaOCl, EDTA, and chitosan). Sixty-four maxillary canines were distributed into two group...

Influence of ethanol-wet dentin, adhesive mode of application, and aging on bond strength of universal adhesive

Abstract The aim of this study was to evaluate the effect of ethanol on the bond longevity of a universal adhesive system to bovine dentin, under different modes of adhesive application and artificial aging. Bovine dentin was exposed, and the smear layer was standardized by sandpaper polishing. Specimens...

Influence of a hydrophobic monomer on the physical and mechanical properties of experimental surface sealants

Abstract This study evaluated the effect of adding the hydrophobic monomer 1,12 dodecanediol dimethacrylate (DDDMA) to experimental sealants with and without thermocycling on degree of conversion (DC), water sorption (WS), water solubility (WSB), color stability (ΔE), and micro-shear bond strength (...

Long-term bonding efficacy of adhesives containing benzodioxioles as alternative co-initiators

Abstract This study evaluated the three-year lifespan of the bond to dentin of experimental self-etch adhesives containing benzodioxole derivatives - 1,3-benzodioxole (BDO) and piperonyl alcohol (PA) - as co-initiator alternative to amines. Adhesive resins were formulated using Bis-GMA, TEGDMA, HEMA, cam...

The effect of hydrofluoric acid and resin cement formulation on the bond strength to lithium disilicate ceramic

Abstract To investigate how the hydrofluoric acid (HF) concentrations applied to a lithium disilicate glass-ceramic (EMX) affects the surface morphology and microtensile bond strength (μTBS) of ceramics to dentin, using light-cured resin cements with or without UDMA. Sixty-three EMX square ceramic b...