D Brown's research while affiliated with University of Dundee and other places

... O aparecimento no mercado odontológico de novos produtos instiga à investigação da citotoxicidade desses [3,4], com objetivo de obter informações à respeito de suas potencialidades tóxicas ou irritantes aos tecidos da cavidade bucal. ...

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Avaliação da citotoxicidade de elásticos ortodônticos intermaxilares

... Advanced dental cement products today demonstrate excellent properties compared to those of the conventional ones [1][2][3][4][5][6][7][8][9] . In particular, the higher bond strength provides many patients with more durable dental devices. ...

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Effect of immersion in NaCl solution on the electrical conductivity and the reduction of the shear bond strength of resin-modified glass-ionomer-cements after current application

... Although PMMA based resins are not ideal in every respect, the combination of properties such as working characteristics, minimum expense, excellent esthetics, accuracy of fit, stability in the oral environment, and ease of processing account for their popularity and universal use (McCabe et al., 1990). ...

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The Effect of Different Denture Base Materials on Microbial Flora Growth

... Heat ac-↓ tivated denture base materials are the most widely used materials for denture base production. 22 The heat can be provided through hot water or microwaves, although there are other methods like chemical activation or physical curing. 9 The main advantages of microwave curing are ease of polymerization and low energy consumption compared with conventional procedure. ...

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Evaluation of microtensile bond strength between CAD/CAM denture resin and acrylic artificial teeth

... Depending on the value of the modulus of elasticity of the adhesive system and hybrid layer, these layers may function as dampen tensions, preserving the integrity of the adhesive interface and its durability [19,20]. The study of these properties is also important in the research of fractures at the interface, since cracks can be generated and propagated in the presence of critical stress in the region [21]. ...

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Mechanical properties of the bond interface associated with nd:yag laser

... (5) There is no improvement in abrasion resistance between 24 hours and 7 days air dryness. (6) Stone manufacturers advised to wait 24-48 hours before manipulating gypsum casts. However, sometimes it may be inconvenient to wait such a long time, dentist often find it necessary to manipulate the cast as soon as possible after they poured. ...

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The effects of drying techniques on the compressive strength of gypsum products

... The composite resin is a mixture of two or more materials with properties superior to any one component. Composite resins are tooth-colored materials that are used in both the anterior and posterior parts of the mouth (Combe et al. 1985). ...

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The effect of two bleaching products on microhardness and surface texture of different dental aesthetic restorative material

... Therefore, the claimed effect of filler-reinforcement in GIC is not evident. In contrast, the experimental use of stainless steel [2] has the benefit of known strong bonding via the adherent oxide coat, an effect previously reported for polycarboxylate cement [31], and which then appears to give improvement over Ketac-Silver. However, it should be noted that the discrepant conclusions discussed above are based on a variety of test methods, protocols and products: either single or several tests of compression, diametral tension and bending, or the present Hertzian indentation. ...

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Failure behavior of glass ionomer cement under Hertzian indentation

... Therefore, a short dwell time (no longer than 15 seconds) would be recommendable to simulate the clinical situation. 5,88,89 To mimic the expected intraoral timings, three variations of temperature per cycle have been suggested, 77 with a longer dwell time used with an intermediated temperature of 37°C, and a shorter dwell time for the temperature extremes. 23 Intervals between baths have varied, from 3 seconds 69 to 15 seconds. ...

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Assessment of In Vitro Methods Used to Promote Adhesive Interface Degradation: A Critical Review

... In the event of casting mishandling, casting defects may occur (e.g., microporosity) posing a risk that the prosthetic restoration will break in a weak point, due to the accumulation of stresses and the repeated bending fatigue [4,5]. ...

Reference:

The Effect of Argon Inert Gas on the Laser Welding Quality of Co-Cr and Ni-Cr Base Metal Alloys