NEET MDS Shorts
76957
OrthodonticsOrthodontic wires are often made from stainless steel, which contains iron, carbon, and other alloying elements. The term "iron carbide" refers to a compound of iron and carbon, typically represented as Fe₃C. In the context of orthodontic wires, the microstructure can exist in different phases depending on the temperature and composition. Austenite is a face-centered cubic (FCC) structure that is stable at high temperatures and is known for its ductility and strength. When orthodontic wires are heated during the manufacturing process, they can be formed into austenite, which can then be transformed into martensite upon cooling, providing the wire with desirable properties for orthodontic applications.
20521
PeriodonticsProbing depth measurements provide historical data on periodontal attachment levels, reflecting the past and present condition of periodontal health. Tracking changes in probing depth is critical for assessing treatment success and disease progression
88356
INI CET
Apical endodontic
(periradicular) surgery is performed to surgically access the apex
of the tooth root and the surrounding periapical tissues. This
allows for direct visualization of the area, enabling the clinician
to identify the cause of failure of previous root canal treatment
(such as a missed canal, a crack, or a foreign body) and perform
necessary procedures like apicoectomy (removal of the root tip) and
retrofill.
52092
PhysiologyBile acids, through the formation of micelles, aid in the emulsification of fat, facilitating its digestion and absorption.
25695
NEETMDS
Subgingival plaque attached to the epithelium is particularly harmful because it is in direct contact with the junctional epithelium, allowing the release of bacterial toxins and enzymes that directly trigger the host/s immune response, leading to significant inflammation, connective tissue destruction, and ultimately bone loss.
70189
General Medicine
In Zollinger Ellison syndrome, the pancreatic islets are involved because they contain the gastrin-producing cells that form the gastrinomas. The overproduction of gastrin is the main pathological mechanism leading to the disease's clinical manifestations.
37660
Oral PathologyAcrodermatitis enteropathica is due to a deficiency of zinc.
62667
EndodonticsIn a hot bead sterilizer, the temperature is highest in the inner zone of the sterilizer. A hot bead sterilizer uses a heated metal bead to transfer heat to the instruments, which are placed around the bead in a basket. The inner zone is where the bead is located and where the temperature can reach up to 300°C, which is sufficient to kill microorganisms and sterilize the instruments. The outer zone is cooler and does not contribute significantly to the sterilization process.
33747
General PathologyHbA prevents sickling in sickle cell trait patients because the presence of normal hemoglobin (HbA) reduces the proportion of HbS, preventing polymerization.
31161
Pharmacology
CTZ rich in D2 and 5HT receptors