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The use of an opioid analgesic drug was not capable of preventing tooth sensitivity arising from in-office dental bleaching.

Radiopacity has been considered an unchangeable property with great significance for assessing the quality of a restoration by radiographic images. Any changes in this property over time, under the influence of photoactivation and photoaging, might affect radiographic diagnosis.

The addition of chlorhexidine application prior to adhesive cementation appears to be effective in enhancing the long-term push-out strength with glass fiber posts in all root thirds in vitro.

Etching with hydrofluoric acid at different concentrations (1%, 5%, 10%) does not affect the fatigue failure load of premolars restored with feldspar inlays (milled by a computer-aided design / computer-aided manufacturing system). Thus, those acids might be used for ceramic etching.

When using multimode adhesives on sound dentin, clinicians can choose to use either an etch-and-rinse or a self-etch strategy in terms of bond strength; however, on caries-affected dentin, bonding degradation will be greater irrespective of etching mode.

CLINICAL TECHNIQUE/CASE REPORT

Cross-polarized photography is a simple technique that may improve the shade selection for the stratification of resin composites, especially when veneering discolored teeth.

The treatment of younger patients with maxillary lateral incisor agenesis and contralateral “peg lateral” often requires a multidisciplinary approach to achieve functional and esthetic outcomes.

CLINICAL RESEARCH

Both self-adhesive and regular resin cements obtained good survival rates and could be used for fiber post cementation.

LABORATORY RESEARCH

For camphorquinone-based bulk-fill composites, photopolymerization with monowave light-emitting diode lights may be more efficient than polywave ones. Despite manufacturers' claims, not all bulk-fill composites can be effectively cured to depths of 4 mm.

Voids in resin composite restorations may be generated during restorative procedures, leading to a reduction in mechanical, physical, and biological properties. A sonic delivery method may lead to a higher incorporation of air within the restoration and, consequently, higher void formation.

The marginal fit of zirconia crowns cemented by self-adhesive resin cements is clinically acceptable, but the retention after severe aging processes is unsatisfactory.

Endodontically treated teeth with large mesio-occluso-distal cavities may be restored with different techniques to enhance structural integrity.

Two-step repair fillings with silica coating, silanization, and bonding provide improved fracture loads in monolithic and better marginal integrity in veneered zirconia restorations than one-step fillings. Monolithic restorations provide higher fracture loads but require more time for access preparation.

With regard to marginal gap formation, certain flowable “bulk fill” resin composites may be viable alternatives to packable “regular” resin composites—especially in deep cavities with extensive dentin margins.

Dental bleaching promotes slight mineral loss associated with the surface changes of enamel, which might be prevented by toothpaste use prior to treatment.

The addition of diacetate chlorhexidine up to 0.2% is a viable method by which to provide a drug release system in adhesive systems to maintain stable resin-dentin adhesive interfaces after two years of water storage.

Different classification systems of composites can be used for meta-analyses. The results are rankings of composite classes, which can be used to decide to use a specific composite. We found a high agreement of such rankings between most classification systems.

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