Adhesive-Dentin Bond Durability Quiz

What is one of the factors affecting the interface durability of adhesive systems?

• Material related factors

• Clinical related factors

• Operator related factors

• Patient related factors

Which enzyme is involved in the degradation of the exposed collagen network by matrix metalloproteinases?

• Matrix metalloproteinase

• Cholesterol esterase

• Acetylcholinesterase

• Pseudocholinesterase

What is the aim of ethanol wet bonding in dentin adhesives?

• To increase collagen hydrophilicity

• To increase water sorption/solubility

• To exclude water from the bonded interface

• To promote enzyme-catalyzed collagen degradation

Which technique involves the addition of protease inhibitors to protect dentin collagen degradation?

• Ethanol-wet bonding

• Addition of protease inhibitors

• Collagen cross-linking agents

• Dentinal occlusion

What is the purpose of modifying the methacrylate side chains in adhesive systems?

• To promote enzyme-catalyzed collagen degradation

• To decrease resin hydrolytic stability

• To increase collagen hydrophilicity

• To minimize nanoleakage

Which factor directly affects restoration longevity based on the position of the tooth in the mouth?

• Number of restored surfaces

• Tooth type

• Cavity type

• Cavity size

What is the role of saliva in bond degradation?

• To enhance remineralization

• To participate in degradation

• To increase bond strength

• To protect against degradation

Which adhesive system is believed to minimize nanoleakage and keep enzymes 'fossilized'?

• None of the above

• All-in-one adhesive systems

• Self-etch adhesives

• Etch and rinse adhesives

What is the limitation of using Chlorhexidine as a protease inhibitor?

• Improved bond strength

• Reduced water sorption

• Enhanced durability

• Staining potential

What is the aim of dentinal occlusion (Oxalate occlusion) in extending bond durability?

• To increase outward dentinal flow

• To decrease the formation of calcium oxalate crystals

• To reduce collagen hydrophilicity

• To promote resin monomer infiltration