Restorative Dentistry
Core Concepts
Restorative dentistry focuses on restoring form, function, and aesthetics. Candidates must know cavity classification (G.V. Black), principles of tooth preparation (e.g., preservation of tooth structure, resistance and retention forms), and material selection (amalgam, composite, glass ionomer, ceramics). Understanding adhesion, polymerization shrinkage, and biocompatibility is crucial. Also, knowledge of minimally invasive dentistry, caries removal techniques, and management of failed restorations is expected.
Common Traps
Questions often test the indication for different materials: composite for anterior aesthetics, amalgam for high-stress posterior areas, glass ionomer for high caries risk or pediatric cases. Another trap is the correct sequence for bonding: etch, primer, adhesive, light cure. Also, be aware of the differences between direct and indirect restorations, and the management of pulpal exposure.
Worked Example / Rule of Thumb
A patient presents with a fractured anterior tooth with no pulpal involvement. The best choice is a composite restoration using a beveled enamel margin to blend aesthetics. Rule of thumb: for posterior load-bearing areas, consider the strength and wear characteristics of the material; amalgam may still be appropriate where moisture control is difficult.