NEET MDS Shorts
80267
Public Health Dentistry
The generally accepted "certainly lethal dose" range for 70 kg adults, i.e.,
from 5 to 10 g of sodium fluoride or from 32 to 64 mg fluoride/kg The concept of a "probably toxic dose" (PTD) is advanced. The PTD, 5.0 mg
F/kg, is defined as the dose of ingested fluoride that should trigger immediate
therapeutic intervention and hospitalization because of the likelihood of
serious toxic consequences.
97983
ProsthodonticsIf freeway space is obliterated, it would result in all of the above: improper aesthetics, clicking sounds of the dentures, trauma to the underlying ridges.
39168
Oral PathologyPagets disease of bone is most likely to be found de novo among geriatric patients as it primarily affects individuals over 50 years of age, with increasing prevalence with advancing age. It is a disease of bone remodeling that becomes clinically apparent in older adults. Central giant cell granuloma typically affects younger individuals, while hyperparathyroidism and osteopetrosis are not age-specific to geriatric patients.
15807
Oral PathologyWhite sponge nevus is a hereditary condition presenting with bilateral, pearly white, soft, thickened areas of buccal mucosa present since birth. The familial history (younger brother also affected) and congenital nature are characteristic. Leukoedema is acquired and disappears with stretching, lichen planus is typically acquired in adults, and mucous patches are related to secondary syphilis.
87835
MicrobiologyThe bacteria having the highest lipid Content in the cell wall Mycobacterium tuberculosis
32431
PeriodonticsThe least involved furcation is seen in the maxillary first premolar.
54446
General PathologyHypertension is not a typical feature of Paget disease of bone; it is characterized by a mosaic pattern of newly formed woven bone.
80181
Oral PathologyMyositis ossificans would NOT cause pathologic fractures of maxilla or mandible because it involves ossification within muscle tissue, not weakening of existing bone structure. Bone cysts, multiple myeloma, and giant cell tumor all cause bone destruction and weakening, predisposing to pathologic fractures. Myositis ossificans actually adds calcified tissue rather than destroying bone.
31821
EndodonticsIn primary teeth, intrusion is common because alveolar bone is pliable. Primary teeth characteristics that predispose to intrusion: 1) The alveolar bone around primary teeth is more cancellous and flexible, 2) This pliable bone allows the tooth to be pushed deeper into the socket rather than being displaced laterally or avulsed, 3) The root structure of primary teeth also contributes to this pattern. While vertical overlap and lip protection may influence injury patterns, the primary factor is the pliable nature of the developing alveolar bone in children.
43886
Dental Anatomy
Interglobular Dentin:
Sometimes, mineralization of dentin begins in small globular areas that fail to coalesce into a homogenous mass. This results in zones of hypomineralization between the globules.
These zones are known as globular dentin or interglobular spaces. Thus, demonstrating defect of mineralization and not of matrix formation, the dentinal tubules pass uninterruptedly through interglobular dentin.