Radiology Test 1 Exam Questions and
Verified Answers | Graded A+
vertical bitewings - 🧠ANSWER ✔✔A patient 25 years of age, with permanent
dentition, severe gingival inflammation, and generalized probe readings of 5-8
mm, would benefit most from what type of bitewings?
Distal portion of the canine, first premolar, second premolar, first molar, mesial
portion of the second molar - 🧠ANSWER ✔✔Which teeth should be imaged on a
horizontal premolar bitewing?
Distal portion of the second premolar, first molar, second molar, third molar -
🧠ANSWER ✔✔Which teeth should be imagined on a horizontal molar bitewing?
DOWN - 🧠ANSWER ✔✔With positive vertical angulation, the PID (position
indicating device) is pointing such that the x-ray beam will be directed:
UP - 🧠ANSWER ✔✔With negative vertical angulation, the PID is pointing such
that the x-ray beam will be directed:
+10 - 🧠ANSWER ✔✔What is the correct vertical angulation for bitewing
radiographs on an adult patient?
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,Between the 1st and 2nd molar - 🧠ANSWER ✔✔Through which interproximal
space should the central ray of the x-ray beam be directed when exposing a
molar bitewing radiograph?
Horizontal angulation - 🧠ANSWER ✔✔Overlapped interproximal spaces results
from an error made in what?
vertical angulation - 🧠ANSWER ✔✔Unequal distribution of the arches (ie: seeing
more maxillary arch and not enough of the mandibular arch) results from an
error made in what?
Centering the x-ray - 🧠ANSWER ✔✔Conecut error results from incorrect?
Periapical (PA) - 🧠ANSWER ✔✔--- radiographs are particularly useful in that they
image the entire tooth from incisal/occlusal edge to the tip of the tooth root.
Bitewing radiographs - 🧠ANSWER ✔✔Play an important role in detecting
proximal surface (between the teeth) caries and imaging the supporting bone
levels important in the evaluation of periodontal diseases.
Bitewing radiographs - 🧠ANSWER ✔✔Image the coronal portion of both the
maxillary and mandibular teeth
pack placement, vertical angulation, horizontal angulation, and centering the x-
ray beam - 🧠ANSWER ✔✔Four basic steps of bitewing radiographs?
Page 2 of 39
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,Roentgen's in 1895 - 🧠ANSWER ✔✔Discovered the x-ray, also known as
roentgenograph or roentgen ray?
Otto Walkhoff - 🧠ANSWER ✔✔Was the first to expose a prototype of a dental
radiograph?
Either:
William Herbert Rollins, (Boston)
William James Morton, (NY)
C. Edmund Kells, (New Orleans) - 🧠ANSWER ✔✔We will probably never know
who made the first dental radiograph in the US due to:
Dr. William Herbert Rollins - 🧠ANSWER ✔✔Was one of the first to alert the
profession to the need for radiation hygiene and protection and is considered
by many to be the 1st advocate for science of radiation protection?
Dr. C Edmund Kells - 🧠ANSWER ✔✔Was the first to put the radiograph to
practical use in dentistry?
Howard Riley Raper - 🧠ANSWER ✔✔Wrote the first dental radiology textbook,
Elementary and Dental Radiology, and also introduced bitewing radiographs in
1925?
Page 3 of 39
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, William David Coolidge - 🧠ANSWER ✔✔The most significant advancement in
radiology came in 1913 when the hot cathode tube was introduced by?
Williams David Coolidge and General Electric Company - 🧠ANSWER
✔✔Introduced the Victor CDX shockproof dental x-ray machine?
Disease, things we can not detect clinically, educate patient, documentation,
extra teeth, missing teeth, wisdom teeth, orthodontics, evaluate trauma -
🧠ANSWER ✔✔Why do we expose dental radiographic images?
Panoramic radiography - 🧠ANSWER ✔✔Capable of exposing the entire dentition
and surrounding structures in a single image?
Eastman Kodak Company - 🧠ANSWER ✔✔In 1913, the first hand-
wrapped,moisture proof dental x-ray film packet was marketed by who?
emulsion - 🧠ANSWER ✔✔Early film had this only on one side which required
long exposure times?
bisecting technique and paralleling technique - 🧠ANSWER ✔✔The two basic
techniques for acquiring a dental radiographic image are:
1895 - 🧠ANSWER ✔✔When were x-rays discovered?
Franklin McCormack - 🧠ANSWER ✔✔Who is given credit for developing the
paralleling technique?
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Verified Answers | Graded A+
vertical bitewings - 🧠ANSWER ✔✔A patient 25 years of age, with permanent
dentition, severe gingival inflammation, and generalized probe readings of 5-8
mm, would benefit most from what type of bitewings?
Distal portion of the canine, first premolar, second premolar, first molar, mesial
portion of the second molar - 🧠ANSWER ✔✔Which teeth should be imaged on a
horizontal premolar bitewing?
Distal portion of the second premolar, first molar, second molar, third molar -
🧠ANSWER ✔✔Which teeth should be imagined on a horizontal molar bitewing?
DOWN - 🧠ANSWER ✔✔With positive vertical angulation, the PID (position
indicating device) is pointing such that the x-ray beam will be directed:
UP - 🧠ANSWER ✔✔With negative vertical angulation, the PID is pointing such
that the x-ray beam will be directed:
+10 - 🧠ANSWER ✔✔What is the correct vertical angulation for bitewing
radiographs on an adult patient?
Page 1 of 39
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
,Between the 1st and 2nd molar - 🧠ANSWER ✔✔Through which interproximal
space should the central ray of the x-ray beam be directed when exposing a
molar bitewing radiograph?
Horizontal angulation - 🧠ANSWER ✔✔Overlapped interproximal spaces results
from an error made in what?
vertical angulation - 🧠ANSWER ✔✔Unequal distribution of the arches (ie: seeing
more maxillary arch and not enough of the mandibular arch) results from an
error made in what?
Centering the x-ray - 🧠ANSWER ✔✔Conecut error results from incorrect?
Periapical (PA) - 🧠ANSWER ✔✔--- radiographs are particularly useful in that they
image the entire tooth from incisal/occlusal edge to the tip of the tooth root.
Bitewing radiographs - 🧠ANSWER ✔✔Play an important role in detecting
proximal surface (between the teeth) caries and imaging the supporting bone
levels important in the evaluation of periodontal diseases.
Bitewing radiographs - 🧠ANSWER ✔✔Image the coronal portion of both the
maxillary and mandibular teeth
pack placement, vertical angulation, horizontal angulation, and centering the x-
ray beam - 🧠ANSWER ✔✔Four basic steps of bitewing radiographs?
Page 2 of 39
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
,Roentgen's in 1895 - 🧠ANSWER ✔✔Discovered the x-ray, also known as
roentgenograph or roentgen ray?
Otto Walkhoff - 🧠ANSWER ✔✔Was the first to expose a prototype of a dental
radiograph?
Either:
William Herbert Rollins, (Boston)
William James Morton, (NY)
C. Edmund Kells, (New Orleans) - 🧠ANSWER ✔✔We will probably never know
who made the first dental radiograph in the US due to:
Dr. William Herbert Rollins - 🧠ANSWER ✔✔Was one of the first to alert the
profession to the need for radiation hygiene and protection and is considered
by many to be the 1st advocate for science of radiation protection?
Dr. C Edmund Kells - 🧠ANSWER ✔✔Was the first to put the radiograph to
practical use in dentistry?
Howard Riley Raper - 🧠ANSWER ✔✔Wrote the first dental radiology textbook,
Elementary and Dental Radiology, and also introduced bitewing radiographs in
1925?
Page 3 of 39
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
, William David Coolidge - 🧠ANSWER ✔✔The most significant advancement in
radiology came in 1913 when the hot cathode tube was introduced by?
Williams David Coolidge and General Electric Company - 🧠ANSWER
✔✔Introduced the Victor CDX shockproof dental x-ray machine?
Disease, things we can not detect clinically, educate patient, documentation,
extra teeth, missing teeth, wisdom teeth, orthodontics, evaluate trauma -
🧠ANSWER ✔✔Why do we expose dental radiographic images?
Panoramic radiography - 🧠ANSWER ✔✔Capable of exposing the entire dentition
and surrounding structures in a single image?
Eastman Kodak Company - 🧠ANSWER ✔✔In 1913, the first hand-
wrapped,moisture proof dental x-ray film packet was marketed by who?
emulsion - 🧠ANSWER ✔✔Early film had this only on one side which required
long exposure times?
bisecting technique and paralleling technique - 🧠ANSWER ✔✔The two basic
techniques for acquiring a dental radiographic image are:
1895 - 🧠ANSWER ✔✔When were x-rays discovered?
Franklin McCormack - 🧠ANSWER ✔✔Who is given credit for developing the
paralleling technique?
Page 4 of 39
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
