NEET MDS Shorts
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Dental Materials
Luting agents are used to create a tight seal between the crown and the tooth and to enhance the retention of the restoration.
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NEETMDS
The frozen section procedure is the examination of tissue to make a rapid microscopic diagnosis of a specimen while surgery is taking place. It is often used in oncological surgery to inform the surgeon if the surgical margin is clear of residual cancer, or if residual cancer is present at the surgical margin.
The technical name for this procedure is cryosection. The report given by the
pathologist is usually limited to a "benign" or "malignant diagnosis, and
communicated to the surgeon operating via intercom. When operating on a previously confirmed malignancy, the main purpose of the pathologist is to
inform the surgeon if the surgical margin is clear of residual cancer, or if
residual cancer is present at the surgical margin
Advantages of frozen section biopsy:
If more tissue is needed to make an accurate diagnosis, the surgeon is able to
obtain an additional sample, avoiding a second operation.
If the tissue is determined to be cancerous and is amenable to surgery, the mass
can b removed at that time
If the tissue is determined to be benign (not cancerous), then the mass may not
always need to be removed and the surgery can end.
42790
Oral PathologyA periapical (radicular) cyst is a true cyst because it features a pathologic cavity lined by stratified squamous epithelium, typically derived from the cell rests of Malassez. Radiographically, they are usually larger than 1 cm and exhibit a well-defined cortical border.
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Oral PathologyPort wine stains are seen in hemangioma.
74041
Oral PathologyPernicious anemia (vitamin B12 deficiency) is associated with neurological symptoms including peripheral neuropathy, subacute combined degeneration of the spinal cord, and demyelination. Premature graying of hair is also a characteristic feature due to B12s role in melanin synthesis. Folic acid deficiency causes megaloblastic anemia but not neurological symptoms. Plummer-Vinson and Paterson-Kelly syndromes are iron deficiency-related conditions without these specific manifestations.
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PhysiologyGastrin is released by the stomach and stimulates acid secretion in response to food, playing a key role in the gastric phase of digestion.
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MedicineProphylactic spinal irradiation is often used in conditions like acute lymphatic leukemia and non-Hodgkin's lymphoma to prevent central nervous system involvement. However, it is not routinely used in Hodgkin's lymphoma unless there is a specific indication for it.
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NEETMDSIn this clinical scenario, the patient has a completely edentulous maxillary arch and a partially edentulous mandibular arch (missing molars bilaterally). Constructing only a maxillary complete denture against natural mandibular anterior teeth and missing posterior teeth can lead to several complications. The unopposed maxillary denture would put excessive stress on the remaining mandibular anterior teeth, potentially causing them to splay, migrate, or experience accelerated bone loss. Additionally, the lack of posterior occlusion can lead to an unstable bite and functional problems. Therefore, it is crucial to restore the occlusion in both arches simultaneously to ensure proper function, stability, and long-term oral health.
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General PathologyCrew haircut appearance in X-ray skull and Gamna Gandy bodies are associated with sickle cell anemia due to chronic hemolysis and bone marrow hyperplasia.
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NEETMDS
A permissive occlusal splint (also called a stabilization
splint or Michigan splint) is designed to: Allow the condyles to seat in the centric relation (CR)
position. Provide uniform posterior occlusion when the mandible is
in CR. Guide mandibular movements with anterior guidance,
ensuring posterior disocclusion during lateral and protrusive movements. This design "permits" the muscles and joints to function without
interference, reducing abnormal loading and parafunctional activity.