Application of Bulk-Fill Composite to Simplify the Cementation of Indirect Restorations: The COMBO Technique.

This article proposes a technique to simplify the cementation of indirect restorations by exploiting the advantageous properties of bulk-fill composites (BFCs). The proposed technique consists of using a thin layer of a high-viscosity (HV) BFC in the interproximal margins of the preparation and applying low-viscosity (LV) resin luting agents (RLAs) to the rest of the prepared surface. The application of the HV BFC limits the extrusion of the LV RLAs in the interproximal area, deviating the excesses of LV RLAs only on the vestibular and lingual side.

Essential Lines: a simplified filling and modeling technique for direct posterior composite restorations.

There is a continuing increase in demand for the direct restoration of posterior teeth with resin-based composites. However, the execution of these restorations, especially the reproduction of the anatomical details of the tooth, still presents difficulties for most clinicians. Nowadays, resin-based composite restorations have become increasingly popular due to the development of new materials and filling techniques.

CAD/CAM technology and zirconium oxide with feather-edge marginal preparation.

Clinical needs and growing patient expectations have forced modern dentistry to focus on finding ever simpler protocols and to develop materials which offer high performance in their mechanical resistance and esthetics. In recent years, the scientific community has been venturing into the world of CAD/CAM, a significant technological innovation imported from the world of engineering. This innovation has made it possible to exploit a material which has long been noted for its mechanical and mimetic qualities: zirconium oxide.

Temperature change in pulp cavity in vitro during the polymerization of provisional resins.

Objectives: To measure the temperature change in the pulp cavity of an extracted tooth during the polymerization of provisional resins within impression putty and polyethylene matrices. The effect of pre-cooling the putty matrix was also evaluated.

Methods: A freshly extracted premolar tooth had putty impressions recorded prior to crown preparation.