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Research Article

GUEST EDITORIAL

CLINICAL RESEARCH

Tooth whitening products of similar peroxide concentrations provide similar whitening effects when applied for the same amount of time regardless of the delivery method.

LABORATORY RESEARCH

Varying degrees of dentinal tubule occlusion can be achieved with a Nd:YAG laser and the different desensitizing agents. The efficacy of these treatment modalities needs to be determined through clinical investigation.

Application of potassium oxalate to acid-etched dentin may interfere with the properties of adhesives that are subsequently applied to dentin.

An increase in microhardness of demineralized enamel after resin infiltration and acid resistance after exposure to a second demineralizing challenge can show the efficacy of the technique in controlling white spot lesions.

A high degree of conversion can be achieved when dual-cured resin cements are used with increased temperature even when the curing light is compromised by the presence of ceramic restorations. However, caution is recommended before the clinician decides to warm up the resin cement, as this procedure may compromise the working time, depending on the temperature and product.

All light-cured resin modified glass ionomers should be light polymerized after placement. This will greatly increase the bond strength of the material and should improve the longevity of the restoration.

Application of metalloproteinase synthetic inhibitors such as 2% chlorhexidine does not compromise immediate dentin bond strength of self-adhesive resin cements. The application of 24% ethylenediamine tetra-acetic acid (EDTA) gel increases dentin bond strength when self-adhesive resin cements containing methacrylated phosphoric acid ester monomers are used. Since EDTA is also considered a synthetic matrix metalloproteinase inhibitor, 24% EDTA gel might be a simple alternative to be used in conjunction with self-adhesive resin cements to improve their clinical performance.

The present data generated in vitro suggests that retention of fiber posts may be reduced after clinical function and that the adhesive interface inside the root canal undergoes certain degradation processes. Therefore, endodontically treated teeth restored using fiber posts may benefit from additional reinforcement via coronal restoration using adequate ferrules and/or adhesive techniques.

Masking severely discolored dentitions is one of the indications for the use of ceramic veneers. IPS e.max Press and Vita VM7 had significantly higher contrast ratios and masking abilities than Nobel Rondo Press Alumina: Solo. However, none of the materials tested was able to completely mask the black background.

Although self-adhesive resin cements reduce the duration of the luting process, their universal practice requires caution because the microleakage performance of some brands is very poor.

CLINICAL TECHNIQUES/CASE REPORT

A step-by-step “stress-reducing direct composite” technique is recommended to reduce postoperative sensitivity and improve the clinical performance of composite restorations.

CLINICAL TECHNIQUES/ CASE REPORT

Composite full-coverage crowns are a viable option for teeth with amelogenesis or microdonts and are especially suitable for patients still undergoing growth.

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