NEET MDS Shorts
32824
NEETMDS
The combination of
sulfamethoxazole and trimethoprim (known as cotrimoxazole) is synergistic
because the two drugs sequentially block the bacterial folate metabolism
pathway. Sulfamethoxazole
inhibits the incorporation of PABA into dihydrofolic acid, while trimethoprim
inhibits the reduction of dihydrofolic acid to tetrahydrofolic acid.
Cotrimoxazole
It is a combination of sulfamethoxazole and trimethoprim. This has
synergistis bactericidal action.
It is used for treating
Uncomplicated UTI
-Respiratory infections
-Gonorrhea
-Otitis media
Dose Trimethoprim 80mg+ Sulfamethanazole 400mg
Cotrimoxazole causes sequential block of the folate metabolam
82499
Oral PathologyThe statement about the lead foil is incorrect; it lies behind the film to prevent backscatter.
85370
ProsthodonticsCustom tray is better than stock tray for impression (of crown) due to the reason that stock tray may not record full flange.
38500
NEETMDS
The bacteria P.gingivalis, P.denticola,
and P.forsythus are all part of the "red complex," a specific
group of periodontopathogenic bacteria strongly associated with
severe forms of periodontal disease. Aggregatibacter
actinomycetemcomitans (1) actinomycetemcomitans or A.Acetemcomitans)
is typically associated with localized aggressive periodontitis and
is part of the "green complex," not the red complex.
46402
Dental MaterialsCarnauba is added to decrease flow at oral temperatures and contributes to glossiness, is extremely hard, has a high melting temperature
88971
PeriodonticsWhen electrosurgery is correctly employed to prepare gingival tissues for making impressions, it removes a thin layer of crevicular gingival tissue.
22600
Dental MaterialsDie stone has great strength and hardness
90115
Dental Materials
Acid etching creates microscopic tags and fissures on the enamel surface, allowing the restorative material to flow in and mechanically interlock, enhancing the bond strength.
94014
EndodonticsThis statement is untrue because calcium ions in the calcific bridge come from the bloodstream via pulp tissue, not directly from the calcium hydroxide paste. The hydroxyl ions create the alkaline environment that promotes hard tissue formation.
93526
ProsthodonticsRecontouring and selective grinding are procedures used to adjust the fit and function of complete dentures. These adjustments are often performed to eliminate any interference with the patient's normal masticatory (chewing) function or to correct any imbalances in the bite. By removing excess material and reshaping the occlusal surfaces, the dentist can address issues such as malocclusion or improper contact between teeth, thereby restoring a harmonious occlusion.