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Failure of prostheses cemented with zinc polycarboxylate typically occurs at the interface between the cement and the prosthesis, often due to inadequate adhesion to the prosthesis material compared to the strong bond formed with the tooth structure.
Cementation failure of a prosthesis cemented with zinc polycarboxylate occurs at
1) Cement tooth interface
2) Cement and prosthesis interface
3) Between cement layer
4) In the prosthesis itself
Plummer Vinson syndrome is seen in
1) Iron deficiency
2) Esophageal carcinoma
3) Alcohol withdrawal
4) Lead poisoning
The presentation of sudden, severe, shock-like facial pain (on the cheek) that is triggered by specific actions like chewing, with pain-free intervals, is a classic description of trigeminal neuralgia.
A 40 year old female complaints of pain on the cheek which triggers on chewing food and in between she has no pain. Diagnosis is
1) Trigeminal neuralgia
2) Sphenopalatine neuralgia
3) Glossopharyngeal neuralgia
4) Giant cell arteritis
A 40 year old male patient presents with a painless swelling causing fullness
of upper lip and elevation of nostril on left side. The only positive
radiographic finding is unilateral elevation of floor of nasal cavity. The
probable diagnosis is
1) Globulomaxillary cyst
2) Polyp in the nasal cavity
3) Radicular cyst
4) Nasolabial cyst
Back pressure porosity results from gases trapped within the mold cavity that cannot escape due to insufficient venting or high back pressure.
Gas entrapment within the mold leads to which type of porosity in casting
1) Pin hole porosity
2) Microporosity
3) Suck back porosity
4) Back pressure porosity
Le Fort I fractures involve a horizontal fracture of the maxilla at the level of the nasal floor. The maxillary antra are located within the maxilla above the upper teeth, and this type of fracture commonly involves bleeding into these antra. Bleeding from the ear is usually temporal bone related, and CSF rhinorrhea is seen in Le Fort II or III fractures.
Le Fort I fracture is characterized by
1) Bleeding from ear
2) Bleeding into antrum
3) CSF rhinorrhoea
4) All of the above
A 36year old female had swelling of mandibular in lower right molar area
it was diagnosed as ameloblastoma histopathological picture will show
1) Islands of palisading cells with necrosis and unclear arypia
2) Islands of cells with central loose stria with mitotic figures
3) Peripheral palisading with central stroma retraction artefact
4) Peripheral palisading cells island with central loose stellate reticulum
Correct Answer: 1) Thiamine
Chronic alcoholism commonly causes thiamine (Vitamin B1) deficiency, leading to Wernicke-Korsakoff syndrome. Wernicke encephalopathy is characterized by confusion, ophthalmoplegia and ataxia, whereas Korsakoff syndrome presents with severe memory impairment, amnesia and confabulation. Alcohol reduces intestinal absorption, hepatic storage and utilization of thiamine.
Why other options are incorrect:
2) Riboflavin deficiency causes cheilosis and glossitis.
3) Pantothenic acid deficiency is rare and causes burning feet syndrome.
4) Niacin deficiency causes pellagra (dermatitis, diarrhea and dementia).
NEET MDS Key Point: Chronic alcoholic + confusion + memory loss = Think Thiamine deficiency (Vitamin B1).
A 56-year-old chronic alcoholic patient presents to the emergency department with altered mental status. His blood alcohol level is 0.2%. He has severe neuropsychiatric manifestations, a very low mental score, and cannot recall three objects shown a few minutes earlier. Which vitamin deficiency is most likely responsible?
1) Thiamine
2) Riboflavin
3) Pantothenic acid
4) Niacin
Etching with 37% orthophosphoric acid typically creates a zone of etched
enamel rods about 15-25 micrometer
what is the depth of enamel dissolved
1) 5 - 10u
2) 0 - 5u
3) 10 - 15u
4) >15u
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NEET MDS