NEET MDS Shorts
97626
Orthodontics
SOLUTION If heavy pressure is applied to a tooth, pain develops almost immediately as the PDL is literally crushed. If appropriate orthodontic force is applied, the patient feels little or nothing immediately. Several hours later, however, pain usually appears. The patient feels a mild aching sensation, and the teeth are quite sensitive to pressure, so that biting a hard object hurts. The pain typically lasts for 2 to 4 days, and then disappears until the orthodontic appliance is reactivated. At that point, a similar cycle may recur, but for almost all patients, the pain associated with the initial activation of the appliance is the most severe.
There is no excuse for using force levels for orthodontic tooth movement that produce immediate pain of this type.
80388
Prosthodontics
Explanation: The House classification categorizes patients
based on their attitudes towards dentures. Those with a "hysterical mind" are
often resistant to the idea of wearing dentures, believing they cannot adapt to
them. This classification helps clinicians understand patient psychology and
tailor their approach accordingly.
23605
Public Health Dentistry
Sensitivity is the ability of a test to correctly identify all those who have the disease (true positive rate). A test with high sensitivity will have a minimum number of false negative results.
Specificity, on the other hand, measures the ability of a test to correctly identify those who do not have the disease (true negative rate).
75532
Oral PathologyAll of the mentioned syndromes can exhibit high arched palate. Marfans syndrome shows high arched palate due to connective tissue abnormalities. Down syndrome may have high arched palate. Pierre-Robin syndrome has micrognathia with high arched/cleft palate. Treacher Collins syndrome shows palatal defects. Craniofacial dysostosis (Crouzons) and cleidocranial dysplasia both can present with high arched palate due to developmental abnormalities affecting craniofacial growth.
11501
Oral SurgeryUnder general anaesthesia, a patient needs a 4 * 4 gauge.
39470
PhysiologyThe osmolarity of the tubular fluid leaving the ascending limb of the loop of Henle is 100mOsm/L, as it is impermeable to water and reabsorbs solutes.
89928
EndodonticsIn vital teeth, root canal filling should be 0.5-1mm short of the radiographic apex to avoid overfilling into periapical tissues. This corresponds to the apical constriction (cementodentinal junction), the ideal termination point.
88787
Conservative Dentistry
Surface defects in porcelain act as stress concentrators, which can lead to crack initiation and propagation when the restoration is under load.
76428
ProsthodonticsExplanation: In complete denture patients, the second bicuspid often carries a significant load during mastication due to its position and the occlusal forces exerted during chewing. This tooth's location allows it to support the occlusal forces effectively, making it crucial in the overall function of the denture.
88280
OrthodonticsOne of the main disadvantages of using a loop lingual arch to upright the first molar is that it can lead to flaring of the mandibular incisors due to the forces applied.