题目内容
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Which ofthe following is TRUE concerning a Single Composition Spherical alloy()
A．Achieves hi ghearly strength
B．Requires more mercury
C．Provides fighter interproximal contacts
D．Requires as small a condenser as possible
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更多“Which ofthe following is TRUE …”相关的问题
Which ofthe following phases is the weakest and leads to corrosion()
A．gamma
B．gamma 1
C．gamma 2
D．eta
Which ofthe following materials typically releases the least amount offluoride()
A．Composite
B．Compomer
C．Glass-ionomer
D．Resin-modified glass ionomer
Which ofthe following properties ofdental materials is time-dependant()
A．creep
B．resilience
C．elastic limit
D．ultimate strength
A．polyether
B．addition silicone
C．condensation silicone
D．agar
Which of the following promote microleakage ofamalgam()
A．the micron-size gao that always exists between the amalgam and tooth structure
B．amalgam’s higher coeffiaient ofthermal expansion compared to that of tooth structure
C．use poor condensation technique
D．all ofthe above
A．spatulation time
B．liquid-powder ratio
C．temperature ofthe mixing slab
D．number and size ofpowder increments
A．the degree of polymerization of condensation polymers is initially high and then decreases with time
B．evaporation of a volatile by-product causes shrinkage ofthe set material
C．If left unpoured，condensation impression materials expand as they absorb water from air
D．condensation polymers will start to react with the polymer of the impression tray and cause distortion
Chroma is that aspect ofcolor that indicates()
A．degree oftranslucency
B．degree ofsaturation ofthe hue
C．combined effect ofhue and value
D．all ofthe above
Compared to amalgam，resin composites have all ofthe following advantages except()
A．low thermal conductivity
B．esthetics
C．high early strength
D．a self-sealing mechanism
A．drying ofthe wax
B．reduction in temperature
C．volatilization of wax components
D．relaxation of internal stresses
A．1ess expensive
B．more retentive
C．weaker
D．all ofthe above
