NEET MDS Shorts
36252
Oral and Maxillofacial Surgery
Pericoronitis is often caused by the accumulation of food debris and bacteria
beneath the operculum, which is the gum tissue covering the partially erupted
tooth. Trauma from the opposing tooth can exacerbate this condition by further
irritating the gum and facilitating the entry of bacteria.
35317
General PathologyBite cells are characteristic of G6PD deficiency, resulting from oxidative damage to red blood cells.
22875
Dental Materials
The condensation reaction in silicone elastomers produces ethyl alcohol, which evaporates during setting, contributing to the material's contraction.
56904
Oral PathologyMean exposure at the skin from intraoral periapical radiographs is 0.03 mR.
72026
INI CET
The retrodiscal tissue, located behind the articular disc of the temporomandibular joint (TMJ), is highly vascularized and innervated. In contrast, the articular disc itself is largely avascular and aneural in its central portion.
36679
ProsthodonticsThe lingual extension of a lower denture is limited by the action of modiolus.
93778
Pathology
Sarcoidosis is a systemic granulomatous disorder of unknown etiology that can
affect any organ in the body. It is characterized by the formation of non-caseating
granulomas, which are clumps of inflammatory cells that cluster together in
response to an unidentified antigen. The lungs and lymph nodes are most commonly
involved. Here's a detailed explanation for each of the options:
1. Dry cough: This is a common symptom of pulmonary sarcoidosis. The cough is
usually persistent and non-productive, meaning it does not bring up mucus or
phlegm. The presence of a dry cough is not contradicted in the statement "All
are true regarding Sarcoidosis except," so this option is not the correct
answer.
2. Exertional dyspnoea: Shortness of breath on exertion can occur in individuals
with pulmonary sarcoidosis due to the inflammation and granuloma formation in
the lungs. This symptom can be a result of the impaired lung function and
decreased lung capacity caused by the disease. Therefore, this is also a true
statement regarding sarcoidosis.
3. Wheezing: Wheezing is a high-pitched whistling sound that occurs during
breathing, typically heard when airways become narrowed or blocked. It can be a
symptom of pulmonary sarcoidosis, particularly if the disease involves the
bronchi and bronchioles, leading to bronchial obstruction and airflow
limitation. However, it is not the primary symptom and may be less common than
the other respiratory symptoms mentioned.
4. Hemoptysis: While hemoptysis, or coughing up blood, is not a hallmark symptom
of sarcoidosis, it can occur in some cases, particularly when the granulomas are
located in the lungs. It is usually mild and self-limited, but severe cases can
lead to significant bleeding. This is a true statement regarding sarcoidosis, as
it is a possible, although less common, respiratory symptom of the disease.
Since all the options (1, 2, and 4) are true regarding Sarcoidosis
26441
INI CET
Oral lichenoid reactions often exhibit a deeper, more diffuse inflammatory infiltrate compared to oral lichen planus, where the infiltrate is typically band-like and confined to the superficial lamina propria. Other features like Wickham striae and liquefaction degeneration of the basal layer are common to both conditions.
20058
Dental Materials
Regular dental stones have a low expansion rate, usually between 0.1% and 0.2%, which is suitable for accurate model fabrication.
94127
PeriodonticsThe angulation and flexibility of the shank are crucial in determining the ability of an instrument to remove gross deposits of calculus. The shank of a dental instrument, such as a scaler or curette, must be designed to allow for proper access and manipulation around the curves and contours of teeth to effectively remove calculus. While the blade also plays a role, the shank's design is more influential in reaching and adapting to the tooth's surface.