NEET MDS Shorts
19924
State PSC PYQThe Christensen/s phenomenon refers to the gap that occurs between the opposing posterior occlusal surfaces when the mandible is protruded.This disocclusion is a key consideration in dental procedures, especially in the fabrication of complete dentures, to ensure proper balance and function.
33747
Oral PathologyFocal periapical osteopetrosis is NOT a radiolucent lesion - it appears as a well-defined radiopaque (sclerotic) area around the apex of teeth. It represents a localized increase in bone density. Ameloblastoma appears as multilocular radiolucency with soap-bubble appearance, cherubism shows bilateral multilocular radiolucencies, and odontogenic cysts appear as well-defined radiolucent lesions with radiopaque borders.
76957
ProsthodonticsWidened periodontal ligament space is NOT a positive bone factor. It indicates pathology such as orthodontic movement, trauma, or periodontal disease. Positive bone factors include heavy cortical bone layer (provides strength), dense lamina dura (indicates healthy bone), and normal bone height (adequate support). Widened PDL space suggests compromised support.
31307
Pharmacology
Pyridoxine – drug interactions : INH – induces a pyridoxine deficiency state
Levodopa – pyridoxine promotes peripheral conversion of levodopa to dopamine – thus it decreases therapeutic action of levodopa in the brain
Oral contraceptive pills – decrease pyridoxine levels in some females
Hydralazine – impairment of pyridoxine utilisation
4-deoxy pyridoxine – pyridoxine antagonist
63518
Orthodontics
ankylosed teeth are also known as submerged teeth.
submerged teeth are decidous teeth most commonly mandibular second molars
Most common permanant tooth found to be ankylosed is premolars.
88305
Dental Materials
The elastic limit, also known as the yield strength, is the point at which a wire starts to undergo permanent deformation. When a wire is deflected beyond this point, it does not return to its original shape completely.
45535
Dental Materials
The elastic limit of a wire is the point at which it yields permanently, meaning any greater force applied will result in irreversible deformation.
42335
General PathologyThyroid disorder is not associated with Reiter's syndrome; it is linked to infections such as sexually transmitted infections and diarrhea.
48696
PeriodonticsStippling is typically observed on the attached gingiva, indicating healthy tissue.
42364
General MicrobiologyPrions are extremely small infectious agents, typically measuring between 4 to 6 nanometers in diameter. Their small size contributes to their ability to evade the immune system and resist conventional sterilization methods.