NEET MDS Shorts
98411
Dental Materials
While great for temporary cementation, its primary disadvantage for permanent use is its potential to cause tooth discoloration and pulpal irritation.
48983
ProsthodonticsWhat forces best accomplish orthodontic tooth movement: light and continuous.
61343
EndodonticsAfter thorough curettage of periapical pathology, the bone cavity should be left empty to allow natural bone regeneration. Placing foreign materials can impede healing and cause complications.
47956
Dental Materials
The line of force refers to the direction in which the force is applied during condensation. It is crucial to apply the force in a controlled and precise manner to avoid causing damage to the tooth or the restoration. The text mentions that the force applied with a condenser parallels the long axis of the instrument shaft, with specific angles recommended for different areas of the cavity.
32699
Dental Materials
The ideal luting agent consistency is not explicitly mentioned in the text, but it should be able to flow into a film less than 25 µm thick without fragmentation.
70140
Dental Materials
Ductility of Base metalalloy increased by Nickel
Cobalt: (35-65%) decrease hardness, strength and rigidity.
Chromium: (23 –
30 %) passivity effect, decrease melting point.
Nickel: (0-20%) decrease
strength and hardness, increase ductility (Nickel cause sensitivity in some
patients).
Molybdenum: (0-7%) increase hardness.
17504
Orthodontics
SOLUTION The following three patterns of tooth movement can be used to correct a Class II malocclusion: · A combination of retraction of the upper teeth and forward movement of the lower teeth, without tooth extractions · Retraction of maxillary incisors into a premolar extraction space · Distal movement of maxillary molars and eventually the entire upper dental arch
34828
Oral Medicine
Folic acid deficiency is most commonly due to inadequate dietary intake or increased metabolic demand, such as during pregnancy.
92572
General Medicine
Megaloblastic anemia can be caused by either folate or vitamin B12 deficiency. Both of these nutrients are essential for DNA synthesis and cell division in the bone marrow.
48778
Oral Medicine
Rifampicin is a first-line drug for the treatment of tuberculous meningitis. It has excellent penetration into the cerebrospinal fluid and is bactericidal. Isoniazid and ethambutol are also commonly used as part of a multi-drug regimen, but rifampicin is particularly important due to its ability to cross the blood-brain barrier effectively and its rapid bactericidal activity against Mycobacterium tuberculosis.