NEET MDS Shorts
33483
Dental Materials
Dental argon lasers typically operate within the range of 100 to 500 mW, providing sufficient power for soft tissue procedures and some hard tissue interactions.
34721
PeriodonticsBone graft procedures are most successful in treating narrow three-wall defects. These are defects that extend from the crest of the alveolar bone to the alveolar crest and involve only one surface of the tooth root. The success of a bone graft in such cases is due to the presence of three walls of intact bone that can provide stability and support for the graft material, allowing for predictable and effective regeneration of the missing bone tissue.
18152
Conservative DentistryAluminium oxide (Al₂O₃) is primarily derived from bauxite, which is an ore that contains a high percentage of aluminium. The Bayer process is commonly used to extract aluminium oxide from bauxite.
89535
Oral SurgeryIn peripheral nerve block, the local anaesthetic with the longest duration of action is Bupivacaine.
94127
PeriodonticsThe angulation and flexibility of the shank are crucial in determining the ability of an instrument to remove gross deposits of calculus. The shank of a dental instrument, such as a scaler or curette, must be designed to allow for proper access and manipulation around the curves and contours of teeth to effectively remove calculus. While the blade also plays a role, the shank's design is more influential in reaching and adapting to the tooth's surface.
47501
MicrobiologyThe chemical nature of bacterial exotoxins is, a lipopolysaccharide complex
20911
Oral PathologyTarget cells (codocytes) are characteristic of thalassemia and appear as cells with a central dark area, clear ring, and outer dark rim resembling a target. Safety pin cells are also seen in thalassemia due to the abnormal hemoglobin distribution. Note that Cooleys anemia (option 4) is actually the same as thalassemia major, so both options 1 and 4 are technically correct, but thalassemia is the more general and preferred answer.
76583
ProsthodonticsRigid precision attachments are recommended for free-end mandibular partial dentures when opposing a complete denture. The complete denture provides even loading and reduced lateral forces, making rigid attachments appropriate. When opposing natural teeth or other partial dentures, semi-rigid attachments are preferred to accommodate differential movement.
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
29740
Oral SurgeryWhen extracting an upper first bicuspid, the buccal root is typically in close proximity to the buccal cortical plate. Due to the thinness of this bone, a fractured root tip is most likely displaced into the adjacent buccal soft tissue. The maxillary sinus is a possibility for upper molars or second bicuspids, but less common for the first bicuspid's buccal root.