resto quiz 2

What structure is formed between the tooth and adhesive system to provide micromechanical retention?

• Enamel rods

• Etch pattern

• Hybrid layer

• Contact area

What is the gold standard for bonding techniques?

• Self-etch system

• 6th generation adhesive

• Total etch system (4th generation)

• Etch-and-dry method

Why is incremental packing recommended in composite restoration?

• Prevent air entrapment

• Improve esthetics

• Prevent polymerization shrinkage

• Increase radiopacity

What component causes contact dermatitis in bonding systems?

• HEMA

• Bis-GMA

• Phosphoric acid

• Silica

What rotary instrument characteristic helps improve bur longevity and reduce breakage?

• Positive rake angle

• Cross-cut edge

• Smooth shank

• Long neck

Function of primer?

• Create hybrid layer

• Etch enamel

• Infiltrates exposed collagen

• Bond composite

Lesion due to mechanical tooth flexure?

• Abrasion

• Attrition

• Abfraction

• Erosion

What is the most commonly affected tooth in pit and fissure caries?

• Maxillary canine

• Mandibular first molar

• Mandibular central incisor

• Maxillary second molar

Which bacterial enzyme aids adherence to tooth surfaces?

• Sucrase

• Lactase

• Glucosyltransferase

• Amylase

Critical pH for root surface demineralization?

• 5.5

• 6.2

• 4.5

• 7.0