Microfilled Resin Composites Quiz

Composite materials designed for better adaptation to deep or undercut areas of the cavity due to their low viscosity.

Composite materials designed for posterior teeth as a potential amalgam replacement, they provide strength for chewing forces.

A type of composite material that gains its low viscosity by lowering the filler content or adding a surfactant.

A type of composite material that achieves its packability through methods like fused particle agglomerates, fibrous fillers, or a narrow distribution of fillers.

Composite materials utilizing nanosized fillers, resulting in excellent esthetics and low wear.

Composite materials offering the mechanical strength of hybrid composites and the polish and gloss retention of micro-filled materials.

Silica and/or zirconia particles in nano-filled composites can be either nanomers or nanoclusters.

Nanomers are spherical, discrete, and non-agglomerated nano-sized particles with an average size of 5-20 nanometers.

Microfilled resin composites are a type of dental filling material developed in the late 1970s. They are made of light-activated dimethacrylate resins with very small silica filler particles (0.01 μm). These tiny filler particles are dispersed in a resin matrix at a concentration of 32% to 50% by volume.

Microfilled composites have small filler particles, which increases their viscosity (thickness). To make them workable, more monomer diluents (like TEGDMA) are added, resulting in a lower overall filler content.

To address the viscosity problem, two strategies were developed: heterogeneous microfills and sintering. Heterogeneous microfills combine pre-cured microfill composite with uncured material, while sintering involves creating large, porous filler particles by fusing small ones together

The interface between the pre-polymerized resin filler and the surrounding matrix is considered a weak point. Since the pre-cured fillers are already hardened, they can't fully bind with the new resin, potentially leading to filler loss and decreased strength.

Microfilled composites typically have a lower filler content (more resin). This results in a higher thermal expansion coefficient, meaning they expand and contract more with temperature changes, which can contribute to gaps or cracks over time.

Due to their lower filler content, microfilled composites tend to be weaker, making them ideal for non-stress bearing areas in the mouth, such as Class III and V restorations.

Microfilled composites have a high resin content, leading to higher water absorption or sorption. This can affect their longevity and potentially contribute to staining over time.

Microfilled composites have higher polymerization shrinkage, meaning they shrink more during the hardening process. This shrinkage can put stress on the surrounding tooth structure and potentially lead to gaps or cracks

Nanomeric particles, with sizes smaller than the wavelength of visible light (400-800 nm), are undetectable by refractive index. This allows for the creation of highly translucent materials in dental composites.

Nanofilled composites exhibit an improved depth of cure, resulting in a higher degree of conversion (DC) compared to conventional composites.

Nanofilled composites, due to their smaller particle size, can achieve higher filler loadings than traditional microfilled composites. This leads to improved physical properties and clinical performance.

Nanofilled composites are known for their increased polishability, providing smooth, shiny surfaces with reduced wear.

Nanofilled composites exhibit improved wear resistance compared to traditional hybrid and microhybrid composites due to their smaller particle size.

Nanofilled composites contribute to reduced polymerization shrinkage compared to conventional composites, leading to lower stress within the material.

The smaller particle size in nanofilled composites contributes to increased fracture resistance, enhancing the overall strength of the material.

The smooth, spheroidal shape of nanoclusters in nanofilled composites allows for easier shaping and handling, improving sculptability.

A type of composite dental material that eliminates the need for separate adhesive application by incorporating etching and bonding capabilities within the material.

The goal of self-adhesive composites is to simplify restorative procedures by removing the need for a separate adhesive step.

These composites contain a special monomer that can chemically bond to the tooth and crosslink with other materials, creating a strong seal.

The bond strength of self-adhesive composites may be less than separate adhesives and composites because of limitations in etching and adaptation.

Surefil one is a type of self-adhesive composite that combines the benefits of both glass ionomer and traditional composites.

This type of composite material uses a dispenser that heats the material for a smooth and bubble-free application.

Thermoviscous composites use infrared technology to provide efficient and homogenous heating.

Thermoviscous composites are characterized by their bubble-free application, which ensures a smooth and even filling.

A composite resin that uses RAP technology to reduce curing time and provide excellent handling properties. Contains 82% silica-zirconia filler for strength and wear resistance.

A monoshaded composite that matches tooth shade by reflecting underlying tooth structure. Uses 260nm spherical filler to achieve accurate color matching. Requires a blocker for Class III and IV restorations.

A resin composite containing S-PRG filler that releases fluoride and other ions. This technology helps neutralize acids, protecting teeth from demineralization.

A composite resin technology that minimizes steps by requiring only two layers for optimal results: body and enamel. Provides good color blending and translucency.

Spherical filler particles used in composites like Omnichroma. They are 260nm in size and help generate color parameters for accurate shade matching.

A necessary step in Class III and IV restorations using Omnichroma. It helps mask the darkness of the oral cavity and provides a better base for composite placement.

Surface pre-reacted glass used in Giomer composite. It protects the glass ionomer phase and allows for controlled ion release, enhancing the material's protective properties.

The technology used in ESTELITE ASTERIA that allows for a faster curing time and extended working time under operating light. It ensures faster curing without sacrificing handling properties.

Fluoride, a mineral naturally found in teeth, enhances the formation of fluoroapatite, a stronger and more resistant form of the tooth's enamel. This process helps prevent cavities by making the enamel less susceptible to acid attacks.

Certain bacteria, like Streptococcus mutans, contribute to the formation of dental caries (cavities). Boron, a naturally occurring element, exhibits antimicrobial properties that can inhibit the growth of these bacteria.

Strontium, a mineral, actively participates in the remineralization process by promoting the formation of calcium phosphate, a key component of enamel. This helps to repair and rebuild weakened enamel.

Silicates, compounds containing silicon, can increase the remineralization process of teeth. They contribute to the formation of a more durable and resilient enamel structure, protecting against decay.

Aluminum, a metal, is used in dental materials to seal dentin, the layer beneath the enamel. This helps prevent sensitivity and leakage, protecting the pulp (nerve) of the tooth.

Antimicrobial composite materials aim to reduce the risk of secondary caries (cavities around existing fillings) by inhibiting bacterial growth or attachment. They work by either killing bacteria on contact (bactericidal) or preventing them from sticking to the surface (antifouling).

Remineralizing materials are designed to restore the lost mineral content in early tooth decay. They work by promoting the growth of new, healthy enamel and help prevent further decay.

Self-healing composites are innovative materials that can repair themselves when a crack occurs. They contain tiny capsules filled with resin that are released when the crack forms, filling the gap and hardening to restore the material's integrity.