NEET MDS Shorts
66230
RadiologyRadiographic evidence of cortical bone loss typically becomes apparent when at least 13% of the bone height has been lost. This is because the density of the bone and the surrounding structures needs to be significantly altered to be detectable on an X-ray film.
74776
Orthodontics
SOLUTION According to Simon, in normal arch relationship, the orbital plane passes through the distal axial aspect of the maxillary canine Malocclusions described as anteropostenor deviations based on their distance from the orbital plane are as follows: 1. Protraction: The teeth, one or both, dental arches, andYor jaws are too far forward, i.e. placed forward or anterior to the plane as compared to the normal where the plane passes through the distal incline of the canine. 2. Retraction: The teeth, one or both dental arches and/or jaws are too far backward, i.e. placed posterior to the plane than normal
Simon used the orbital plane (a plane perpendicular to the F-H plane at the margin of the bony orbit directly under the pupil of the eye).
38500
NEETMDS
The bacteria P.gingivalis, P.denticola,
and P.forsythus are all part of the "red complex," a specific
group of periodontopathogenic bacteria strongly associated with
severe forms of periodontal disease. Aggregatibacter
actinomycetemcomitans (1) actinomycetemcomitans or A.Acetemcomitans)
is typically associated with localized aggressive periodontitis and
is part of the "green complex," not the red complex.
22436
Prosthodonticsa properly designed rest on the lingual surface of a canine is preferred because it exerts less leverage against the tooth compared to a rest on the incisal surface (option 1). This is important for maintaining the integrity of the tooth and preventing potential damage or displacement.
82499
Oral PathologyThe statement about the lead foil is incorrect; it lies behind the film to prevent backscatter.
73010
Periodontics2% fluoride is one of the most commonly used desensitizing agents in dentistry. It works by strengthening enamel and reducing the permeability of dentin, which helps alleviate sensitivity in teeth. Fluoride treatments are widely used in clinical practice to manage dentinal hypersensitivity effectively.
75869
Physiology
The gastrocolic reflex is a physiological response where the distension of the stomach by food initiates contractions in the rectum, often leading to the urge to defecate.
78662
RadiologyThe target of the X-ray tube is angulated to produce all the following effects except to energize the photons.
85390
EndodonticsThe best medium to carry an avulsed tooth to the dental clinic is milk. Milk is ideal because: 1) Osmolality similar to tissue fluids maintains cell viability, 2) pH is compatible with periodontal ligament cells, 3) Low bacterial content reduces contamination risk, 4) Readily available in most situations, 5) Can maintain PDL cell viability for 1-2 hours. Buccal vestibule is good but not always practical for young children, water causes cell lysis due to osmotic pressure, and cotton causes dehydration. Milk provides the best storage environment for maintaining cell viability.
54002
Dental Materials
Resin cements are generally applied in a film thickness of 25 µm or less for optimal performance.