NEET MDS Shorts
19222
EndodonticsThe most common consequence of bleaching non-vital teeth is cervical resorption. This occurs because: 1) Bleaching agents can penetrate through dentinal tubules and reach the cervical area, 2) The agents cause chemical irritation to periodontal ligament cells, 3) This triggers inflammatory resorption at the cervical region, 4) The process can be progressive and lead to tooth loss. Proper isolation with cervical seal using glass ionomer cement helps prevent this complication.
11622
Oral SurgeryFormalin, specifically 10% neutral buffered formalin, is the standard fixative used for preserving biopsy specimens. It helps to maintain the tissue architecture and cellular details, making it suitable for histopathological examination. Ethanol is not typically used for routine tissue fixation as it can cause tissue shrinkage and distortion. Hydrogen peroxide is not a fixative and is used for different purposes, such as disinfection. A 1% formalin solution is too dilute for effective fixation.
55428
PedodonticsOedema in the tissue determines the amount of shrinkage of inflamed tissue after scaling and root planing.
48666
PhysiologyCalbindin binds calcium and prevents it from affecting epithelial signaling, facilitating calcium absorption in the intestine.
84780
PedodonticsExplanation: Anesthetics are drugs specifically designed to eliminate sensations, including pain, by blocking nerve signals in the body. They can be local (affecting a specific area) or general (affecting the entire body).
20731
Oral PathologyIn achondroplasia, the cartilage columns lack orderly arrangement and fail to calcify properly.
79063
General Medicine
The cornerstone of treatment for acute alcoholic hepatitis is complete abstinence from alcohol. This allows the liver to recover and reduces the risk of progression to more severe forms of liver disease, such as cirrhosis. Corticosteroids may be used in severe cases, but their use is controversial and not universally recommended.
29561
Dental Materials
The essential ingredients of the dental inlay investment employed with the conventional gold casting alloys are a-hemihydrate of gypsum, quartz, or cristobalite, which are allotropic forms of silica.
30590
PedodonticsThe first step in coronoplasty is the elimination of retrusive contact prematurities.
77536
NEETMDS
Hypochlorite solutions, such as household bleach (sodium hypochlorite), are widely used in laboratories as effective and inexpensive disinfectants.
They are effective against a broad range of microorganisms, including bacteria, viruses, and fungi.