MDS PREP
Lession of facial nerve at level of stylomastoid foramen leads to
1. Loss of taste sensation from anterior 2/3 of tongue
2. Paralysis of orbicularis oculi muscle
3. Losss of innervation to stapedius
4. Loss of lacrimal secretion
Lesion of the facial nerve at the stylomastoid foramen leads to paralysis of the orbicularis oculi muscle.
The minimum distance and angle between the X-ray source and operator should be at least
1. 6 feet, 45 degree
2. 6 feet, 135 degree
3. 9 feet, 90 degree
4. 9 feet, 120 degree
Oral Pathology
Answer: 2
The minimum distance should be 6 feet at a 135-degree angle for safety.
The most common intraoral location for a pigmented nevi is the
1. Hard palate
2. Soft palate
3. Buccal mucosa
4. Floor of mouth
Oral Pathology
Answer: 1
The most common intraoral location for a pigmented nevus is the hard palate.
Grid is used
1. To remove secondary radiation
2. Filter the radiation
3. Removes scattered radiation
4. None of the above
Oral Pathology
Answer: 3
Grids are used to remove scattered radiation from the X-ray beam.
Macrodontia is associated with
1. Acromegaly
2. Pituitary gigantism
3. Hypoparathyroidism
4. Hyperthyroidism
Oral Pathology
Answer: 2
Macrodontia is associated with pituitary gigantism.
A White blood cell count of more than 1,00,000 cells/cc of blood indicates
1. Leukopenia
2. Leukocytosis
3. Leukaemia
4. Polycythaemia
Oral Pathology
Answer: 3
A white blood cell count of more than 100,000 cells/cc indicates leukemia.
A developmental abnormality characterized by the presence of fewer than the usual number of teeth is
1) Anodontia
2) Oligodontia
3) Microdontia
4) Dens in dente
Oral Pathology
Answer: 2
1. Anodontia: This is the complete absence of teeth. It is a rare condition
where an individual fails to develop any teeth.
2. Oligodontia: This term is used when an individual has fewer teeth than the
typical dental formula, which is six incisors, two canines, two premolars, and
six molars in the permanent dentition (excluding the third molars or wisdom
teeth). The term "hypodontia" is often used synonymously with oligodontia, but
hypodontia can also refer to a broader range of conditions characterized by the
congenital absence of one or more teeth, whereas oligodontia is more
specifically the absence of six or more teeth.
3. Microdontia: This condition involves teeth that are smaller than normal. It
can affect either the primary or permanent dentition and may involve one tooth
or multiple teeth.
4. Dens in dente: This is a rare developmental anomaly where a tooth forms
within the dental crown of another tooth, typically in the form of a small
tooth-like structure. It is not a condition of tooth number but rather an
abnormality of tooth structure.
The X-rays which are mostly likely to be absorbed by the tissues and produce an injury
1. X-rays of long wavelength
2. X-rays of short wavelength
3. Filtered X-rays
4. Central rays
Oral Pathology
Answer: 1
X-rays of long wavelength are more likely to be absorbed by tissues and cause injury.