Signature (Ramsey, N.J.)最新文献

With recent advancements in adhesive technology, restorative materials have evolved to an enhanced level of aesthetics while enabling more conservative cavity preparations and promoting reinforcement of the remaining tooth structure. These restorations have included both anterior and posterior treatment modalities applied directly and indirectly. With a growing awareness on the part of many patients of the possible cosmetic treatment alternatives came the desire for aesthetic, metal-free, durable restorations. This presentation discusses the material properties and clinical protocol of a new material which combines a ceramic optimized polymer with a fiber-reinforced framework for durable, aesthetic anterior and posterior restorations.

Following orthodontic treatment, the mechanical debonding of brackets often results in damage to the enamel surface of teeth. Loss of natural luster, a roughened surface, and scarring may occur. When scarring occurs, a method for re-establishing the enamel luster and surface characteristics can be instituted by either the restorative dentist or the orthodontist. One method of restoring enamel luster and natural surface characteristics following removal of orthodontic fixtures is through a sequence of enamel polishing. This article discusses logical steps for the restoration of enamel through the utilization of polishing burs and progressive pastes (Proxyt), Ivoclar Vivadent, Amherst, NY) for the final aesthetic orthodontic result.

The search for tooth-colored and metal-free restorations is one of the major challenges in dental research. For several decades, ceramic has been used as a restorative material because of its aesthetics and stability. Unfortunately, the survival rate of most all-ceramic systems seems unsatisfactory; due to the natural brittleness of ceramic, fractures have been the primary reason for the high failure rate. Since 1988, the University of Zurich Dental School, Switzerland, has been working with the IPS Empress all-ceramic system (Ivoclar/Williams, Amherst, NY). This article reports the clinical and research data from approximately 3,000 all-ceramic restorations.

Composite resin materials have become the basic restorative materials of the modern aesthetics-oriented practice. However, the application of composite resin in posterior teeth remains a challenge as a result of its handling characteristics and chairside stratification. New ceramic optimized polymers (ceromers), such as Tetric Ceram (Ivoclar Vivadent, Amherst, NY), now offer versatility and improved handling properties in response to increasing clinical demand for producing high-quality natural restorations. With a well-designed instrumentation, the work of the clinician may be greatly facilitated. This article evaluates the selection and utilization of a direct ceromer material for posterior restorations and presents a predictable method to achieve aesthetic restorations.

Once considered to be revolutionary, porcelain veneers are now the foundation of most aesthetic dental practices. Requiring only conservative preparations, porcelain veneers can dramatically change a smile. This article discusses the technique necessary to prepare and place porcelain veneers, using a new pressed-ceramic system. Close and thorough cooperation and communication between the clinician and the laboratory are essential throughout the procedure, and this article is coauthored by a dentist and a ceramist.

More important than any resin cement is the marginal fit and retentive nature of the ceramic restoration to be bonded. Cementation should not be intended to compensate for poor dentistry, but to assist in producing superior aesthetic results. Responding to the demand for all-ceramic restorations, dental manufacturers continue to refine the resin cements used in luting for this modality. The ideal resin cement for ceramic restorations must demonstrate low viscosity; easy loading; a film thickness which facilitates complete seating high strength; and excellent wear resistance. This article reviews the available resin cements, with particular focus on a new type of initiator and stabilizer for light- and dual-cured resin cements.

The objectives of an ideal direct restoration include pulpal health, biocompatibility, occlusal stability, anatomical restitution, marginal perfection, and interproximal integrity. While tooth-colored composites have replaced amalgam as the restorative material of choice for many dental professionals, the utilization of composite materials of two different viscosities has proven effective in increasing strength and adaptation, and facilitating placement of anterior and posterior restorations. Several newly enhanced composite combinations have begun to allay reservations about directly placed tooth-colored restorations. This article classifies the ideal handling characteristics and benefits of a recently introduced, direct Ceromer system (Tetric Flow and Tetric Ceram, Ivoclar Vivadent, Amherst, NY.)