WorksheetsDENTIN BONDING AGENTS
Total questions: 9
Worksheet time: 3mins
Which of the following constituents is common in occlusal sealants, bonding agents and composite resins?
Bis-GMA
Polymethyl methacrylate
Benzoin methyl ether
Silica filter
Acid etching is done for
15 seconds
60 seconds
90 seconds
120 seconds
Dentin bonding agents usually contains
only hydrophilic component
only hydrophobic component
hydrophobic and hydrophilic component
lyophilic and lyophobic component
When restoring a tooth with resin material, acid etching can do all of the following, except?
Increase the surface area
Permit chemical bonding between resin and enamel
Create surface irregularities in enamel for better mechanical retention of resin
Condition the tooth surface for better wetting
Dentin conditioner has which of the following function?
Removes smear layer
Increases surface energy of dentin
Forms a thin resin layer over exposed collagen fibrils
Helps in bonding with composite
Most advantageous indication of acid etching is
Decrease microleakage
Decrease polymerization shrinkage
Decrease coefficient of thermal expansion
Decrease porosity in restorative material
Etchant preferred in gel form than in liquid form is
For better control over placement
Enhance and concentrate the action of acid
Helps in visualization while placement
None of the above
An acidic agent that dissolves the inorganic structure in dentin that allows infiltration of adhesive resin is
Dentin bonding agent
Dentin conditioner
Primer
None of the above
Diluent used in Bis-GMA based composites is
4 META
TEGDMA
UDMA
CDMA
