What is the primary benefit of using microfilled composite resins for anterior tooth restorations?
Solution
Correct Answer: Option A
- The primary benefit of using microfilled composite resins for anterior tooth restorations is their improved polishability.
- Microfilled composites contain very small filler particles, typically in the range of 0.04 microns, which contribute to a smooth and highly polishable surface.
- This property is especially important in anterior restorations, where esthetics and a natural appearance are critical.
- In contrast to macrofilled or hybrid composites, microfilled composites provide a glossy finish that closely mimics natural enamel, helping the restoration blend seamlessly with the surrounding tooth structure.
- Although their strength and wear resistance are generally lower than those of hybrid composites, their superior polishability makes them the material of choice for areas where esthetics take priority.
Other options such as greater strength or higher wear resistance are more characteristic of hybrid or packable composites rather than microfilled ones. Similarly, bond strength to dentin depends more on the adhesive system than on the filler particle size of the composite.
Key points:
- Microfilled composites have very small filler particles.
- Provide excellent polishability and smooth finish.
- Ideal for esthetic anterior restorations.
- Less suitable when Maximum strength or wear resistance is required.
Reference: Sturdevant's Art and Science of Operative Dentistry, 7th Edition, Chapter 20, Page 620