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Biomedical subjects

Douglas A Terry

Publications and source records attributed to Douglas A Terry.

At least 19 recordsLinked to original sources
PubMed2005

Restoring the interproximal zone using the proximal adaptation technique--Part 2.

In this era of modern adhesive dentistry, clinicians are still faced with challenges from microleakage, recurrent decay, and sensitivity. Many of the challenges are a result of using yesterday's restorative techniques and principles with the new formulations of biomaterials. Procedures such as the proximal adaptation and the oblique layering techniques offer modifications to the nonadhesive principles discussed in Part I (The Compendium, December 2004), while providing the patient and clinician with the 3 primary objectives of restorative dentistry: prevention, preservation, and conservation. Using stratification techniques and thorough adhesive protocol as illustrated in this article allows clinicians to provide restorations that have improved physical characteristics while reducing the effects of polymerization shrinkage. Other benefits of these adhesive procedures include enhanced chromatic integration, ideal anatomical form and function, optimal proximal contact, improved marginal integrity, and longer lasting directly placed composite restorations.

Adult↗
PubMed2005

Developing form, function, and natural aesthetics with laboratory-processed composite resin--Part I.

The metallic restorative materials of the past required the dentist to focus on function and form because metal had no tooth-colored properties. The development of tooth-colored restorative materials has introduced a new element in the restorative equation--color. Unfortunately, many clinicians continue to apply a "metallic mentality" to restorative techniques with the newer adhesive restorative materials that can produce a tooth-colored appearance. With advances in material sciences and adhesive technology, the restorative concept now includes aesthetics as a variable in the restorative equation as well.

Color↗
PubMed2004

Selection defines design.

The era of "extension for prevention" used restorative materials and cavity preparation designs in an attempt to arrest the caries process. In the new era of "prevention to eliminate extension," many of the old limitations are no longer applicable because of advances in research and technology. The advances in restorative materials and adhesive technology require the use of an adhesive design concept when considering restorative material selection, preparation designs, and adhesive protocol and placement procedures and techniques. This adhesive design concept has been instrumental in the paradigm shift from the principles of extension for prevention to an ultraconservative principle of prevention to eliminate extension. From the early onset of the disease to initial placement of the restoration, this modern philosophy has three clinical objectives: prevention, preservation, and conservation. The clinician should strive to preserve the maximum integrity of the natural dentition by preventing the placement of the initial restoration, preserving and conserving tooth structure during the preparation of restoration, and conserving the tooth and restoration by increasing the longevity of the restoration between replacements. This article describes an incremental layering technique that uses a conservative restorative adhesive design concept (adhesive preparation design and protocol) for preparing, restoring, and finishing a Class IV restoration, and it demonstrates how the selection of a small-particle hybrid composite influences the preparation design. CLINICAL SIGNIFICANCE Selection of improved restorative materials that simulate the physical properties and other characteristics of natural teeth in combination with an adhesive design concept and preoperative considerations during the diagnostic and treatment planning phases of the restorative procedures provide the framework that ensures the optimal development of an esthetic restoration while preserving, conserving, and reinforcing the tooth-restoration complex.

Color↗
PubMed2004

An integration of composite resin with natural tooth structure: the Class IV restoration.

UNLABELLED: Recent developments in adhesive technologies, the design of composite resin materials, and contemporary placement techniques have revolutionized the delivery of minimally invasive direct restorations. The improved handling characteristics available from low-viscosity flowable systems, packable composites, and sculptable small-particle hybrid composites have expanded today's treatment options. In order to achieve a successful and natural-appearing direct composite restoration, the clinician must have a comprehensive knowledge of adhesive dentistry and an understanding of the optical properties of the natural tooth. This article describes a methodological approach for preparing, restoring, and finishing the maxillary central incisors with a small-particle composite. LEARNING OBJECTIVES: This article demonstrates the restoration of a Class IV fracture and discusses the anatomic variations of the adjacent teeth to produce a direct composite restoration in harmony with the surrounding dentition. Upon reading this article, the reader should: Be aware of the infrastructure considerations of a composite resin system. Recognize the role of composite resin on development of natural aesthetics and contour.

Composite Resins↗
PubMed2004

Direct applications of a nanocomposite resin system: Part 1--The evolution of contemporary composite materials.

UNLABELLED: The delivery of functional, aesthetic restorations has been simplified by the introduction of contemporary composite materials. The most recent innovation in composite resin technology is the revolutionary application of nanocomposite theories in restorative materials. Contemporary nanocomposite materials deliver increased aesthetics, strength, and durability, combining scientific principles for increased longevity. This article discusses the application of nanocomposite resin systems and demonstrates the historical perspective of composite resin technologies in restorative treatment. The second installment to this series will address the clinical applications of such a system in the anterior region. LEARNING OBJECTIVES: This article addresses material selection considerations that must be addressed when selecting an appropriate direct restorative material. Upon reading this article, the reader should: Understand the historical background and application of nanocomposite materials. Be aware of the clinical implications of a nanocomposite resin system.

Acrylic Resins↗