MDS PREP
A thin radioopaque line running around the curvature of root in IOPA is
1. Lamina dura
2. Lamina propria
3. Lamina limitans
4. Lamina densa
Radiology
Answer: 1
A thin radiopaque line running around the curvature of the root in IOPA is lamina dura.
When evaluating intraoral periapical films which structures have improved sharpness
1. Lingual structures
2. Buccal structures
3. Interproximal structures
4. All of them equally
Radiology
Answer: 1
When evaluating intraoral periapical films, lingual structures have improved sharpness.
Location and radiographic density make a talon cusp appear similar to
1) Delacerations
2) Concrescence
3) A supernumerary tooth
4) Dens in dente
Radiology
Answer: 3
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.
Which of the following related to a radiograph with the image that has many gradations of gray from totally white to completely black
1. Underexposed
2. Overexposed
3. Long-scale contrast
4. Short-scale contrast
Radiology
Answer: 3
A radiograph with many gradations of gray from totally white to completely black is related to long-scale contrast.
The gold standard for the diagnosis of osteoporosis is
1. Dual energy X-ray absorptiometry
2. Single energy X-ray absorptiometry
3. Ultrasound
4. Quantitative computed tomography
Radiology
Answer: 1
The gold standard for the diagnosis of osteoporosis is Dual energy X-ray absorptiometry.
Reflecting layer used in intensifying screens
1. Calcium tungstate
2. Titanium oxide & magnesium carbonate
3. Gaddinium oxysulphide
4. Lanthanum oxybromide
Radiology
Answer: 2
The reflecting layer used in intensifying screens is titanium oxide & magnesium carbonate.
Which of the following is a possible cause for a low density radiograph
(light film?)
1. Cold developer
2. over exposure
3. Improper safety light
4. Excessive developing time
Radiology Answer: 1
Overexposure typically results in a darker film, not a lighter one. An improper safety light or excessive developing time would not directly cause a low density radiograph. It is essential to maintain the correct temperature and time in the developing process to achieve a diagnostic image quality. A cold developer will not fully develop the film, leading to a lighter, less detailed image.
In bone scintigraphy all is guessed except
1. Avascular necrosis
2. Fractures
3. Osteomyelitis
4. None
Radiology
Answer: 4
In bone scintigraphy, all is guessed except none.