NEET MDS Shorts
54248
Dental Anatomy
Dentinogenesis is the formation of dentin by odontoblasts of mesenchymal origin
located at the periphery of the dental pulp
Dentinogenesis is initiated by the inductive influence of the enamel organ
involving molecular signaling pathways, such as Wnt, Runx-2, and TGF-?. In the
molar tooth, dentinogenesis starts at the late bell stage, and occurs in the
crown as well as root regions.
Predentin, the first organic matrix secreted by odontoblasts, is composed by
proteoglycans, glycoproteins, and collagens.
44044
NEETMDS
4) Squamous cell carcinoma
An ulcer with a rolled or everted margin is a characteristic feature of a squamous cell carcinoma (SCC). The raised, firm border is due to the proliferation of malignant epithelial cells. This is a key diagnostic sign that distinguishes it from other types of ulcers like those caused by tuberculosis or syphilis.
75801
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.
90281
Oral SurgeryAnterior to lateral pterygoid plate. In the extraoral maxillary nerve block, the needle is inserted at the posterior aspect of the condylar neck and directed anteriorly to target the pterygomandibular space, which contains the maxillary nerve and its branches. This technique is used to anesthetize the molars and premolars of the upper jaw and is also known as the Vazirani-Akinosi technique.
91997
ProsthodonticsEncroachment into the freeway space results in reversible soft tissue inflammation and irreversible bone changes.
38059
Dental Materials
According to the text, the mixing time for zinc phosphate cement is about 1-15 minutes.
96396
Oral SurgeryFor a 30-year-old patient with BP 150/80 mmHg requiring dental treatment, preoperative sedation is the most appropriate approach. This blood pressure reading indicates stage 1 hypertension, which is not severe enough to contraindicate dental procedures but may benefit from anxiety reduction through sedation to prevent further BP elevation during treatment.
13198
PedodonticsTissue changes occurring in teeth no longer in function include cemental atrophy.
64200
PeriodonticsA black line on the gingiva which follows the contour of the margin is due to mercury.
65779
General Medicine
Untreated celiac disease leads to villous atrophy, where the finger-like projections of the intestinal mucosa become flattened, reducing the surface area for nutrient absorption.