Resin Dental Instruments VS Stainless Steel Dental Instruments

Introduction

The esthetic appearance of composite resin restorations is based on the shape, color, and gloss achieved by finishing and polishing. Depending on your state's regulations, expanded-function dental assistants can polish a variety of types of composites to produce a range of esthetic appearances and lusters. Microfilled and nanocomposites can be polished to produce an enamel-like shine, while the conventional hybrid and packable composite resins, when used for posterior restorations, can be polished to feel smooth to the patient's tongue but do not require a high, enamel-like shine.

Even those dental assistants who are not currently able to polish composite resin restorations play an important role in both patient education and ensuring that the correct sequence of composite resin polishing instruments is being used to achieve the highest luster for each composite resin placed. Understanding the principles of polishing composite resins is even more important when the assistant is providing the final polish to a composite resin restoration. The objective of our own investigation was to measure the wear of veneering resins instruments with dentifrices and to find a good combination of resin and fillers and to compare them with the stainless steel dental instruments. Clinical evaluations and laboratory-based studies focused on resin instruments durability also continue to highlight this need for advanced materials. The development and implementation of composite resin dental restorative materials rely on a comprehensive understanding of each component of the composite and consideration of methods for changing each component. Here, we discuss basic instruments of resin restoratives and their role in the subsequent restoration.

Several alloys described as stainless steel which resist tarnish and corrosion in the mouth used for a variety of dental appliances and instruments. Probably the greatest application of stainless steel is for orthodontic arch wires and bands, while a more limited use is for temporary space maintainers and crown forms. Root-canal files and reamers designed for endodontic operations also fabricated from stainless steel (Braga and Ballester, Pp: 962-970). For each of these applications there are advantages to having an alloy which will respond to hardening heat treatments.

Main body

Resin composites are composed of three distinct phases, each with its own role in dictating material properties: the polymerizable resin, filler, and the filler-resin interface. The resin phase is composed of polymerizable monomers that convert from a liquid to a highly cross linked polymer upon exposure to visible light, which catalyzes the formation of active centers, typically radicals that induce polymerization. The filler has several roles, including enhancing modulus, radiopacity, altering thermal expansion behavior, and reducing polymerization shrinkage by reducing the resin fraction. Finally, the filler-resin interface serves as a bridge by coupling polymerizable moieties to the particle surface.

Each component represents an opportunity for improvements in the overall composite and is the target of recent research reviewed here. Specifically, this article provides background for the general behavior observed in photo-polymerization, including the origins of polymerization-induced shrinkage stress, photo-initiation systems used to improve the restoration curing behavior, recent research on these topics and novel ...