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The desensitizing agents tested provided rapid and effective clinical relief of dentin hypersensitivity.

Ten to 15 seconds of light-curing with a high-power density unit (>1200 mW/cm2) is recommended to keep the intrapulpal temperature increase within a safe range.

Repairing and extending composite restorations is enhanced by mechanical roughening and applying freshly made silane on the old composite filling and the use of an adhesive rendering a thin bonding layer.

Surface treatment enhances bond strength of a fiber post. Heat treating silane improves its efficiency.

The use of LED/laser with in-office bleaching gel does not produce severe alterations in dental enamel.

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CLINICAL TECHNIQUES/CASE REPORT

This case report describes a modification of the Tucker technique to manage a concavity of a proximal surface when a traditional cast gold box form would be too invasive. A conservative and esthetic alternative to this box form is the proximal hollow grind.

Cracked tooth syndrome is an uncommon finding in unrestored teeth. However, these phenomena appear to be found with increasing frequency, creating a challenge for a correct diagnosis. Direct-bonded restorations may be a safe and conservative option for teeth affected by incomplete cracks.

Fracture of anterior teeth by trauma has become frequent in the permanent dentition, and bonding of the tooth fragment seems to be an excellent and reliable treatment. It is a quick and simple procedure that reduces concerns about tooth color and the longevity of composite restorations.

CLINICAL RESEARCH

Despite advances in cariology, variations in treatment threshold regarding when to intervene into occlusal carious lesions still exist among dentists. Patient age affects dentists' decisions about when to intervene surgically.

LABORATORY RESEARCH

Infiltration of initial in vitro enamel lesions by resin seems to reduce or even stop the progression of carious lesions.

Multi-mode adhesives may be optimized when they are used as self-etch adhesives on dentin with a separate enamel etching step.

Evaporation of adhesive ingredients due to repeated opening of the bottle adversely influences the shelf life of a universal one-step adhesive only when more than 50% of the solvent and evaporable ingredients have been evaporated.

Simulated pulpal pressure presented different effects on the long-term adhesive performance of the resin cements and should be considered when choosing a resin-based luting cement.

The use of alcohol-containing mouthrinses, associated with toothbrushing, may increase the roughness and topography changes of resin composites over time. The microhybrid resin composite was more susceptible to increased roughness than were the nanofilled and microfilled composites.

Fracture loads of canines and maxillary central incisors are not affected by the veneer preparation design (eg, conservative or conventional preparation with palatal chamfer). However, conventional preparation generated higher tensile stress in the ceramic veneer.

When restoring roots with an adequate quantity of dental tissue, a cast post and core or fiber post may be used. But when weakened roots are being restored, fiber posts with a wider cervical emergence diameter appear to be the best clinical solution, even though the clinical prognosis is doubtful.

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