Class III cosposite restoration

Why 15 seconds longer with acid etch on enamel?

What tool is used to initially open the cavity for a Class 3 restoration on the mesial of tooth 12?

• Spherical diamond bur

• Egg/football diamond bur

• Flat-ended diamond bur

• Flame-shaped diamond bur

What is the recommended application time for phosphoric acid on enamel and dentin during a Class 3 restoration?

• 15 seconds on enamel, 30 seconds on dentin

• 30 seconds on enamel, 15 seconds on dentin

• 20 seconds on both

• 45 seconds on both

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Which type of composite resin is applied first to form the lingual face during a Class 3 restoration?

• Enamel composite resin

• Dentin resin

• Flowable composite

• Hybrid composite

What is the very last step performed to achieve the final polish and natural appearance of the restoration?

• Using a coarse sanding disc

• Applying a finer grain disc

• Creating surface texture with a diamond bur

• Final polishing with a silicon carbide brush