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Biomedical subjects

R L Bertolotti

Publications and source records attributed to R L Bertolotti.

At least 19 recordsLinked to original sources

Creating tight, anatomically correct interproximal contacts.

Achievement of an excellent contact, one that provides a natural look and feel, reproducing the natural tooth contact or sometimes improving it, can be achieved in many ways. Understanding the separate issues of tightness and anatomy is crucial to achieving the desired result. In most cases, use of a contoured sectional matrix and McKean-style ring is the surest way to achieve the desired result. Unusual circumstances, such as wide preparations and malpositioned teeth, call for innovative techniques, some of which are illustrated in this article.

Dental Cavity Preparation↗

Bite-formed posterior resin composite restorations, placed with a self-etching primer and a novel matrix.

Problems encountered in placement of posterior resin composite restorations have limited their clinical application. This article identifies and solves 4 of the frequently encountered problems: establishment of tight and anatomically correct contacts, refinement of occlusion, postoperative sensitivity, and time required for the procedure. A posterior resin composite is placed using a self-etching primer. A novel matrix, flowable composite, and bite-formed occlusion facilitate the clinical procedure.

Acid Etching, Dental↗

Building laminate veneers and fixed bridges with polymer glass technology.

A new type of material is being introduced to American dentistry. The material is a polymer glass, tested in Europe as Artglass. The material is purported to be equal to or better than porcelain for esthetic dentistry. The strength, color translucency, and color vitality allow minimal destruction of enamel for esthetics. An Artglass occlusal is less abrasive to enamel than porcelain and approximates gold. The characteristics of this material system introduces "minimal invasive dentistry" to routine dental repair and reconstruction. A case study of the senior author's reconstruction of his anterior teeth is presented.

Dental Bonding↗

Intraoral metal adhesion utilized for occlusal rehabilitation.

Recent advances in adhesive monomers and surface preparation methods allow strong resin adhesion to all intraoral metal surfaces. Resin-metal bond strengths may exceed typical resin-etched enamel bonds. Innovations in prosthetic procedures have resulted. Data for metal adhesion are reviewed and the use of intraoral metal adhesion to finalize an occlusal rehabilitation is illustrated. Included in the metal surface preparations are intraoral sandblasting and intraoral tin plating.

Dental Alloys↗

Adhesion monomers utilized for fixed partial denture (porcelain/metal) repair.

A technique is presented for repair of fatigue-fractured fixed partial dentures with an overlaid, bonded porcelain/metal repair. The repair techniques utilize recent advances in resin-to-metal and resin-to-porcelain adhesion. Clinical procedures are given for adhesion of repair castings to intraoral porcelain or metal surfaces. Metal surface preparation techniques depend on the chemistry of the metal and include intraoral tin plating of noble metals. Direct adhesion of composite resin luting agents is used for base metals.

Adhesives↗

Removal of "black-line" margins and improving esthetics of porcelain-fused-to-metal crowns: update in technique.

A repair technique is presented for elimination of "black line" crown margins and extension of margins onto cervical surfaces. A resin bonding agent that adheres simultaneously to metal, porcelain, and dentin is utilized to expedite completion of the repair. The bonding resin is opaqued with a light-curing, filled resin and then covered with a suitable composite resin. This technique updates a previously published technique by eliminating glass-ionomer cement liners and liner etching and improves both efficiency and esthetics of the repair.

Composite Resins↗

Casting metals, Part I.

The status of casting alloys is presented with regard to metallurgical considerations, clinical properties, sales, and evolution of alloys from a historic perspective. Alloys are classified on the basis of 1) normal-fusing (non-porcelain bonding); and 2) high-fusing (porcelain bonding) and on nobility within these two groups. Part I of this two-part series details normal-fusing alloys. High-fusing alloys will be discussed in Part II.

Dental Alloys↗

Indirect veneers.

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Acrylic Resins↗