Bhatia’s Dentogist MCQs in Dentistry with Explanatory Answers- Clinical Sciences 6th Edition
Today we will share Study Materials related to Dentistry. We will share here Bhatia's Dentogist MCQs in Dentistry with Explanatory Answers- Clinical Sciences.
First we will share Few Points from the Book which are given bellow.
Dental Materials:
Polysulphides:
Advantages:
- Long working time
- High tear resistance
- Modest cost
Disadvantages:
- Requires custom tray
- Stretching leads to distortion
- Stains clothes, has obnoxious odor --> Pour within 1 hr
Working time:
Begins with the start of mixing and ends just before the impression material has developed the elastic properties. It is measured at mouth temperature.
Setting time:
Can be described as the time elapsing from the begning of mixing until the curing has advanced sufficiently that the impression can be removed from the mouth with negligible distorortion.
- it is measured at room temperature.
Impression Materials:
"ZOE impression paste and Plaster of Paris are called Mucostatic impression material, as they do not compress the tissues during seating of impression."
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