Dr. Adhershitha AR Assistant Professor, Department of Prosthodontics, Government Dental College, Kottayam.
Reason for brittleness of endodontically treated
tooth
Micro cracks in remaining tooth structure
produced by endodontic procedures.
Weakened collagen intermolecular cross-links in Dentine
Loss of internal & external tooth structure
All the above
Average number of deglutitions per day
450
500
550
600
The most effective way to resolve inflammation
of oral tissues is to keep the denture out of
the mouth for at least ____ hours before
impressions are made.
12
18
24
48
Chewing centre is located in
Pons
Thalamus
Frontal lobe
Cortex
Genial tubercle becomes prominent in
Class I patients
Class II patients
Class III patients
In resorbed ridge
Beyron’s point is
13 mm in front of anterior margin of meatus
13 mm from posterior margin of tragus to
canthus
13mm from foot of tragus to canthus
10 mm anterior to centre of external auditory
meatus and 7mm below Frankfort plane
Path of insertion for a ¾ crown
Parallel to occlusal 1/3
Parallel to occlusal 2/3
Parallel to cervical 1/3
Parallel to long axis
Functional cusp bevel gives
Help to preserve periodontium
Provides resistance form
Provides structural durability
Help to preserve tooth structure
A parallel pin added to prefabricated resin
post for antirotational stabilization and some
additional retention is called