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Y-TZP ceramics are bioinert materials and present good biocompatibility to oral tissues. A polymer-infiltrated ceramic, which is a hybrid material, presents the same biological characteristics as Y-TZP ceramics.

The assessment of the basic erosive wear examination (BEWE) on patients and on dental photographs seems to yield comparable results and therefore may be a suitable tool for longitudinal monitoring of dental erosion. The assessment of BEWE on dental casts may better be used for laboratory techniques.

For partial indirect restorations, immediate dentin sealing is recommended, as bond strength remains stable over time.

A tooth without a ferrule presented more favorable failures than with a 1-mm-thick ferrule when restored with a cast post and core, despite an increased fracture resistance. The findings support the use of a glass fiber post.

REVIEWER RECOGNITION

CLINICAL TECHNIQUE/CASE REPORT

Using the technique of margin elevation, as described in this article, can often make a restoratively difficult situation more manageable and many times eliminate the need for more aggressive procedures that would ordinarily be required with traditional restorative techniques.

The enamel microabrasion technique associated with dental bleaching is an excellent and successful clinical procedure for reestablishing the esthetics of a severe case of enamel fluorosis, eliminating the use of adhesive restorations.

Complicated crown fracture in permanent teeth may cause restorative problems with an unfavorable prognosis. The fragment reattachment technique is the most conservative treatment option.

CLINICAL RESEARCH

The “walking bleach” technique induces an increase in IL-1β and RANKL production in periodontal tissues, which persists for six months after treatment.

Direct visual inspection following temporary tooth separation of approximal lesions that reach the D1-D2 of dentin may contribute to a better decision making about restorative treatment. 

The consumption of cola and coffee can affect the color change of enamel during both at-home and in-office bleaching treatment. In addition, the consumption of cola changes the microhardness, roughness, and micromorphology of the enamel surface.

LABORATORY RESEARCH

In certain preparations for indirect restorations, the cement line is exposed and unprotected by the ceramic. This condition leads to esthetic compromise over time.

Surface treatment of Y-TZP–based ceramics should be carried out with care to avoid unexpected negative effects on the material.

The use of high-viscosity bulk fill associated with low-viscosity bulk fill resin composites presents an adequate bonding interaction and results in better margin stability due to lower shrinkage stress at the occlusal enamel margin.

Gloss retention, surface smoothness, and wear resistance are important factors when choosing resin-based composites.

Color changes after bleaching resin-based composites were clinically acceptable, while aging caused clinically perceptible color changes.

In-office bleaching gel with a neutral/alkaline pH resulted in less hydrogen peroxide penetration into the pulp chamber and could be safely applied using different techniques.

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