NEET MDS Shorts
44706
ProsthodonticsWhen drilling cylindrical implant sites in bone, the following is false: only speeds above 20,000 rpm should be used in drilling.
70702
Oral PathologyThe Burtonian line around the gingival is caused by the absorption of lead.
10424
RadiologyLoss of lamina dura and ground glass appearance of bone is an early radiographic feature of hyperparathyroidism.
26648
PeriodonticsNumber of bony walls - Radiographs can help determine whether an osseous defect has one, two, or three walls remaining.
66113
Oral SurgeryWhen a tooth is resistant to luxation with forceps, transalveolar method is the best approach. This surgical technique involves bone removal and/or tooth sectioning, providing better access and control compared to forceful manipulation that may cause fractures.
71956
Oral Medicine
For a patient on warfarin therapy, the target INR (International Normalized Ratio) for undergoing minor oral surgery is typically 2-3. This range provides adequate thromboprophylaxis while minimizing the risk of excessive bleeding. However, the decision to proceed with surgery should be made on a case-by-case basis, considering the patient's overall health and surgical risks.
79104
Dental Materials
Acid etching selectively dissolves the hydroxyapatite crystals in dentin, creating microscopic tags and channels for resin infiltration, which enhances the bond between the restorative material and the tooth structure.
45703
Dental Materials
The pH is mentioned to be around 2.8 after 3 minutes, which indicates an acidic nature initially.
38424
EndodonticsThe most common consequence of vital tooth bleaching is apical periodontitis. This occurs due to: 1) Penetration of bleaching agents through enamel and dentin tubules to the pulp, 2) Chemical irritation of pulp tissue leading to inflammation, 3) Potential pulp necrosis in severe cases, 4) Subsequent periapical inflammation. This risk is higher with stronger concentrations and longer exposure times. Proper isolation and controlled application help minimize this risk.
55548
Oral SurgeryThe following factors play a role and cause variations in susceptibility of sensory nerve fibers to local anaesthesia: diameter of the nerve fiber, distance between nodes of Ranvier, and length of nerve fiber.