NEET MDS Shorts
24085
PedodonticsUndermining resorption occurs due to necrosis of bone on the compression side as a result of occlusal trauma.
95057
INI CET
Proliferative verrucous leukoplakia (PVL) is a high-risk form of leukoplakia with a very high rate of malignant transformation, often exceeding 70% in some studies. Speckled leukoplakia also has a significant malignant potential, higher than homogenous leukoplakia, but generally lower than PVL. Lichen planus has a much lower potential for malignancy.
93915
Biochemistry
The enzyme phosphatidate phosphatase converts phosphatidic acid to diacylglycerol during synthesis of triacylglycerides. The function of adipose tissue is the storage of fatty acids as triacylglycerols in times of plenty and the release of fatty acids during times of fasting or starvation. Fatty acids taken in by adipocytes are stored by esterification to glycerol-3-phosphate. Glycerol-3-phosphate is derived almost entirely from the glycolytic intermediate dihydroxyacetone phosphate through the action of glycerol-3-phosphate dehydrogenase. Glycolytic enzymes are active in adipocytes during triglyceride synthesis, but those of glycogen degradation (low levels in adipocytes) and gluconeogenesis (ie, glucose-6-phosphatase) are not. Glycerol kinase is not present to any great extent in adipocytes, so that glycerol freed during lipolysis is not used to reesterify the fatty acids being released. The enzyme triacylglyceride lipase is turned on by phosphorylation by a cyclic AMP-dependent protein kinase following epinephrine stimulation.
78178
RadiologyThe best radiographic view for TMJ is OPG.
43672
ProsthodonticsIn anterior teeth, "rests" are ideally prepared and located on the lingual surfaces. This is because the lingual surfaces provide better support for the denture and distribute the occlusal forces more evenly across the palatal mucosa, reducing the risk of denture movement and discomfort.
82583
Oral PathologyPenetration power of X-ray is primarily measured by kilovoltage.
45088
ProsthodonticsThe retromylohyoid area is an important anatomical region in the lower denture that contributes to the retention and stability of the denture. The lateral throat form, which is the space between the retromylohyoid flange and the surrounding tissues, should be adequately large (approximately one-half inch) to allow for proper function and comfort of the denture. A well-formed lateral throat area helps in achieving a good seal and prevents food impaction.
34486
NEETMDSEnamel formation (amelogenesis) begins at the tip of the cusps or incisal edges of the tooth crown and proceeds cervically (towards the gum line). This process starts after the first layer of dentin has been laid down by odontoblasts at the dentinoenamel junction (DEJ). The cuspal tips are the first part of the tooth to form and mineralize.
97563
Oral SurgerySkeletal mandibular retrognathia, characterized by a backward positioning of the mandible relative to the maxilla, is commonly corrected using a sagittal split osteotomy (SSO) of the ramus. This surgical procedure involves making a cut in the ramus of the mandible, allowing the surgeon to reposition the mandible forward. The SSO is favored because it provides good access, allows for significant advancement of the mandible, and has a relatively low complication rate. Other options, such as "C" type osteotomy or horizontal osteotomy of the ramus, are less commonly performed for this specific condition.
80505
PedodonticsAn odontogenic fistula is a common presentation of a chronic dental infection in children, where pus from an infected tooth drains into the oral vestibule.