NEET MDS Shorts
342183
PharmacologyMethemoglobinemia is a condition in which the iron within hemoglobin is oxidized from the ferrous (Fe2+) state to the ferric (Fe3+) state, resulting in the inability to transport oxygen and carbon dioxide. Clinically, this condition causes cyanosis, often posing a diagnostic dilemma
usually results from exposure to oxidizing substances (such as nitrates or nitrites, aniline dyes, or medications, including lidocaine, prilocaine, phenazopyridine hydrochloride (Pyridium], and others)
133512
PedodonticsMobile teeth without secondary traumatic occlusion should never be splinted, but occlusal correction can be done.
700754
Dental MaterialsBrinnel and Rockwell tests are cLassified as macrohardness tests and they aie not suitable for brittle materials.
The Knoop and Vickers tests are classified as microhardness tests. Both of these tests employ toads less than 9.8N.
The Shore and the Barcot tests are used for measuring the hardness of rubbers and plastics.
The Bnnnel test is the one of oldest tests used for determining the hardness of materials and is directly related to proportional limit and the ultimate tensile strength of dental gold alloys.
The convenience of the Rockwell test, with direct reading of the depth of the indentation, has lead to its wide usage.
The Knoop hardness test is used to obtain the values for both exceedingly hard and soft materials. The hardness value is independent of the ductility of the material.
The Vickers test is employed for dental costing gold alloys. It is suitable for determining the hardness of brittle materials.
253340
OrthodonticsSOLUTION
The following three patterns of tooth movement can be used to correct a Class II malocclusion:
· A combination of retraction of the upper teeth and forward movement of the lower teeth, without tooth extractions
· Retraction of maxillary incisors into a premolar extraction space
· Distal movement of maxillary molars and eventually the entire upper dental arch
144672
Oral SurgeryHypersensitivity to the drug is a contraindication to the use of local anaesthetic agent.
962587
ProsthodonticsThe Ney surveyor is widely recognized for its simplicity and durability, making it a popular choice among dental professionals.
841531
PhysiologyTheophylline is a methylxanthine derivative that acts as a phosphodiesterase inhibitor, leading to increased intracellular cyclic AMP (cAMP) levels. This can stimulate various cellular processes, including smooth muscle relaxation and bronchodilation in the respiratory system. It also enhances insulin secretion.
112949
Oral MedicineMen generally have an earlier onset of coronary heart disease compared to women, and the risk increases significantly after the age of 45.