NEET MDS Shorts
90437
EndodonticsThe most desirable healing response is cementum deposition at the apical foramen, which seals the apex and maintains the periodontal ligament space. This represents optimal biological healing.
62442
Oral SurgeryPerform Caldwell-Luc to remove the tip: The Caldwell-Luc procedure (or a modified, less invasive version) has long been considered the standard surgical method for retrieving a displaced root or foreign body from the maxillary sinus, especially when it is mobile within the sinus cavity or the condition has become chronic. It involves creating a small bone window in the anterior wall of the maxillary sinus to access and remove the fragment.
25875
NEETMDSThe sternocleidomastoid (SCM) muscle is responsible for the described movements. The SCM on one side (e.g., the left) causes the head to laterally flex (bend) to the same side and rotate the chin to the opposite side (e.g., the right). The symptoms described in the question, such as inability to move the neck to the left, and the chin moving to the right when tilted left, indicate a problem with the left SCM muscle.
75015
OrthodonticsJasper jumper is a flexible fixed functional appliance used for Class II correction, consisting of a flexible wire that allows mandibular advancement.
71741
Oral SurgeryThe inferior alveolar nerve exits the mandibular foramen and runs in the mandibular canal before it branches off to supply the teeth, including the second premolar. To anesthetize the nerve at this point, the injection site is commonly located between the first and second premolars, inferior to the root apices, where the nerve is relatively superficial and accessible.
35862
PeriodonticsExplanation: For effective calculus removal, a tight instrument grasp combined with firm lateral working strokes is essential. This technique allows for better control and application of force, which is necessary to effectively dislodge calculus from the tooth surface.
44706
ProsthodonticsWhen drilling cylindrical implant sites in bone, the following is false: only speeds above 20,000 rpm should be used in drilling.
33909
Dental Materials
An impression compound is a type of material used in dentistry to take
impressions of the oral cavity. It is a reversible hydrocolloid that can be
manipulated and shaped at room temperature and then changes to a gel-like state
when it absorbs moisture and heat from the oral cavity. The setting process of
an impression compound is not accelerated by a warm, humid day; rather, it is
the presence of moisture and the body's temperature that cause it to set.
57912
RadiologyA 60-year-old male with a 1 cm lytic area in the lower bicuspid region on OPG has a most probable diagnosis of any one of the above.
83015
Biochemistry
Vitamin D is crucial for the maintenance of bone health as it aids in the
absorption of calcium from the digestive tract and facilitates the incorporation
of calcium into bones. A deficiency in vitamin D can lead to osteoporosis, a
condition characterized by weak and porous bones that are more susceptible to
fractures, which is common in the elderly. While vitamin A (Answer 1) is
important for vision and skin health, and niacin (Answer 2) and thiamine (Answer
3) have roles in energy metabolism and nerve function, respectively, vitamin D's
primary role in calcium homeostasis makes it most relevant to bone loss in older
individuals.