274+ quick-fire dental facts • tap a card to flip
ORMOCER stands for Organically Modified Ceramic, which is a type of advanced filling material that combines the properties of ceramics and resins for superior performance in dental restorations.
What does ORMOCER stand for in dental materials?
1) Organically Modified Resin Monomer Ceramic
2) Organically Modified Resin Matrix Composite
3) Organically Modified Ceramic Resin
4) Ormocer is not an acronym.
Acid etching of dentin creates a micro porous surface that allows for better infiltration and mechanical interlocking of the bonding agent, leading to improved bond strength between the restorative material and the tooth structure.
What is the effect of acid etching on dentin bond strength?
1) It decreases bond strength.
2) It has no effect on bond strength.
3) It increases bond strength.
4) It is unpredictable.
The elastic range of a wire determines the extent to which it can be deflected and still return to its original shape without permanent deformation. A wire with a high elastic range can be activated to a greater extent before it reaches its plastic range, making it suitable for larger tooth movements.
How does the elastic range of a wire affect its ability to be activated in orthodontic appliances?
1) A high elastic range allows for greater activation without causing permanent deformation.
2) A low elastic range allows for more precise and controlled activation.
3) The elastic range does not affect wire activation; it is only dependent on the force applied.
4) A wire with a high elastic range is more prone to permanent deformation during activation.
Dimensional change measurement is typically initiated between 5 minutes and 24 hours after the beginning of trituration.
What is the typical timeframe for the initiation of dimensional change measurement in an amalgam?
1) At the beginning of trituration.
2) Between 5 minutes and 24 hours after the beginning of trituration.
3) At the end of trituration.
4) 40 days after the restoration.
Zinc polycarboxylate cement was formulated to have the strength of zinc phosphate and the biological acceptability of zinc oxide-eugenol cements, with the added advantage of chemical bonding to tooth structure.
What is the primary advantage of zinc polycarboxylate cement?
1) High thermal conductivity
2) Low film thickness requirement
3) Chemical bonding with tooth structure
4) Fast setting time
The typical mixing ratio for zinc polycarboxylate cement is 1:2 (powder to liquid).
What is the typical mixing ratio for zinc polycarboxylate cement?
1) 1:1
2) 1:2
3) 2:1
4) 3:1
The compressive strength at 1 hour is lowest for the low-copper lathe-cut alloy, which is 45 MPa.
Which type of amalgam alloy has the lowest compressive strength at 1 hour?
1) High-copper lathe-cut alloy
2) Low-copper lathe-cut alloy
3) High-copper spherical alloy
4) Low-copper spherical alloy
ANSI/ADA Specification No. 12 requires that the material should reach a doughlike consistency in less than 10 minutes from the start of the mixing process.
What is the dough-forming time for denture base resin according to ANSI/ADA Specification No. 12?
1) Less than 10 minutes
2) Less than 5 minutes
3) Less than 20 minutes
4) Less than 30 minutes
Which of the following cements bonds to tooth structure, has an anticariogenic
effect, has a degree of
translucency and does not irritate the pulp?
1. Polycarboxylate cement
2. Resin cement
3. Silicate cement
4. Glass Ionomer cement
Subscribe to Premium for unlimited shorts, full synopsis, notes and mock tests — synced across all your devices.
Get Premium Access
NEET MDS