339+ quick-fire dental facts • tap a card to flip
The maxillary central incisor typically has a single root and a single, large, and straight root canal. While other teeth like the maxillary canine and mandibular first premolar often have single roots, anatomical variations (such as two canals in a mandibular first premolar) are more common than in the maxillary central incisor.
Tooth with definite single root canal
1). Maxillary central incisor
2). Maxillary canine
3). Maxillary second premolar
4). Mandibular first premolar
Lymphoma, specifically non-Hodgkin lymphoma, is a common malignancy associated with HIV/AIDS. Kaposi's sarcoma is also highly prevalent.
Most common tumor seen in HIV:
1) Lymphoma
2) Adenocarcinoma
3) Multiple myeloma
4) Fibroma
A patient with history of frequent abortions and pain in calf muscles
from past 4 years is due to deficiency of
1) Factory VII
2) Protein c
3) Plasmin
4) Thrombin
The optimal concentration for community water fluoridation is generally about 0.7 to 1.2 ppm. Among the given options, 1.0 ppm (Option C) is the most accurate standard value.
The recommended concentration of fluoride in a community water supply is:
1) 0.1 ppm
2) 0.5 ppm
3) 1.0 ppm
4) 2.0 ppm
Primary indication of W arch - Correction of posterior cross bite by arch
expansion
Primary indication of quad helix - Correction of combination of a posterior
crossbite and a finger-sucking habit
W arch appliance is used for?
1) Thumb sucking
2) Tongue biting
3) Anterior cross bite
4) Posterior cross bite
The Katz classification of malocclusion is based on the relationship of the maxillary and mandibular premolars to determine Angle's classification.
Katz classification is based on
1) Canine relation
2) Premolar relation
3) Incisor relation
4) Molar relation
Visor osteotomy is used for
1) Maxillary retrognathism
2) Mandibular prognathism
3) Ridge augmentation
4) Sinus augmentation
Correct Answer: 2) Myophosphorylase
The child most likely has McArdle disease (Glycogen Storage Disease Type V), which is caused by deficiency of muscle glycogen phosphorylase (myophosphorylase). The enzyme deficiency prevents breakdown of glycogen in skeletal muscle during exercise, leading to exercise intolerance, painful muscle cramps, fatigue and myoglobinuria in severe cases. Blood lactate fails to rise after exercise, while the second-wind phenomenon may be observed.
Why other options are incorrect:
1) G-6-phosphatase deficiency causes Von Gierke disease with severe fasting hypoglycaemia.
3) Debranching enzyme deficiency causes Cori disease (GSD III).
4) Glycogen synthase deficiency causes Glycogen Storage Disease Type 0.
NEET MDS Key Point: McArdle disease = Myophosphorylase deficiency = Exercise-induced muscle cramps + myoglobinuria + normal blood glucose.
An 8-year-old child complains of repeated cramping of calf muscles after physical exertion in school. This condition has been been present for the last few years. He was diagnosed with a disorder of glycogen metabolism. Which enzyme deficiency is most likely present?
1) G-6-Phosphatase
2) Myophosphorylase
3) Debranching enzyme
4) Glycogen synthase
Hutchinson triad includes all of the the following except
1) Sensorineural deafness
2) Peg laterals
3) Flat nasal bridge
4) Corneal inflammation
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NEET MDS