NEET MDS Shorts
40012
Dental Materials
Light-cured composites do not require mixing, which reduces porosity and staining. They also allow for better control over working time and increased color stability due to the use of aliphatic amines.
29665
Physiology
Answer: 2) Vasoconstriction in most vessels
Explanation: Norepinephrine acts on alpha-adrenergic receptors in the vascular smooth muscles, causing vasoconstriction in most blood vessels. This diverts blood flow to critical organs like the brain and muscles, preparing the body for physical exertion.
59815
Oral SurgeryMethyl paraben frequently causes allergic reactions in amide type local anaesthesia.
78441
Pharmacology
GlycosaminoglycAnswer (GAGs) are heteropolysaccharides. These molecules are long unbranched polysaccharides containing a repeating disaccharide unit. The disaccharide units contain either of two modified sugars N-acetylgalactosamine (GalNAc) or N-acetylglucosamine (GlcNAc) and a uronic acid such as glucuronate or iduronate. The specific GAGs of physiological significance are hyaluronic acid, dermatan sulfate, chondroitin sulfate, heparin, heparan sulfate, and keratan sulfate.
63518
Orthodontics
ankylosed teeth are also known as submerged teeth.
submerged teeth are decidous teeth most commonly mandibular second molars
Most common permanant tooth found to be ankylosed is premolars.
41757
General PathologyAsymmetric arthritis is not a typical symptom of rheumatoid arthritis; it usually presents as symmetric polyarthritis.
98135
PeriodonticsJuvenile periodontitis, now referred to as localized aggressive periodontitis, is characterized by the loss of periodontal attachment and bone in adolescents and young adults, often without the presence of significant calculus. This distinguishes it from other forms of periodontitis, where calculus is typically present.
46582
Oral SurgeryThe lowest acceptable concentration of oxygen when using nitrous oxide as a general anesthetic agent is 20%. This is because it is crucial to ensure that the patient receives at least the same concentration of oxygen as in ambient air to maintain adequate oxygenation and prevent hypoxia.
87176
Conservative DentistryTo diagnose class III caries clinically, which is caries that involves the proximal surfaces of teeth, a good supplement to radiographs is to examine the proximal surfaces for any color changes, particularly at the contact points where two teeth touch. This is often done using a combination of visual inspection and the use of a dental explorer to detect cavities and softened enamel. However, the answer provided, "Caries activity tests," refers to methods used to assess the activity or inactivity of a caries lesion, not necessarily for diagnosis.
21221
PeriodonticsGore-Tex is a type of barrier membrane used in guided tissue regeneration (GTR) procedures. Its primary purpose is to prevent the formation of long junctional epithelium, allowing for the regeneration of periodontal tissues, including bone and connective tissue. While it does not directly prevent osseous regeneration or connective tissue attachment, it creates a barrier that favors the regeneration of the desired tissues.