NEET MDS Shorts
97903
General MicrobiologyThe primary mechanism of action of the PCR test in diagnosing HIV infection is the amplification of viral RNA or DNA, allowing for the detection of the virus.
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PharmacologyPenicillinase may inactivate penicillin by splitting the beta-lactum ring
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General MedicineIn pneumothorax, breath sounds are absent
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EndodonticsThe answer should be 4 (All of the above) as persistent positive cultures, incomplete apical obturation with infection, and some cases with pulp stones are all potential indications for apicoectomy when conventional treatment fails.
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NEETMDS
Furcation involvement refers to bone loss where roots diverge. The prognosis is generally poorer in maxillary premolars due to specific anatomy, such as the mesial concavity and close proximity of roots, making debridement challenging.
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OrthodonticsIf the coil and tag of a palatal canine retractor are placed too far distally, the force applied will tend to move the tooth buccally (toward the cheek) rather than palatally (toward the palate), which can hinder the intended movement.
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PhysiologyVitamin E (tocopherol) is the most important antioxidant in the body, acting in the lipid phase of membranes to protect against oxidative damage.
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PhysiologyGastric acid secretion is inhibited by acidification of the stomach and duodenum. Low pH (acidity) in the stomach inhibits gastrin release from G cells, while high pH in the duodenum also contributes to the negative feedback mechanism that reduces acid secretion.
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Oral SurgeryExplanation: A comminuted fracture is characterized by the bone being broken into multiple fragments. This type of fracture is often the result of high-impact trauma and can complicate treatment due to the complexity of the fracture pattern.
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Oral PathologyIn the treatment of oral cancers, the fraction of total dose given in each appointment is typically around 150 rad.