Part3 Dental Imagery (100-149) Prof. Pen Nun

A highly detailed image of a dental radiography machine in use, with X-ray film and a dental patient in a clinical setting, showcasing safety measures and quality diagnostics, in bright, clinical colors.

Dental Radiography Quiz

Test your knowledge on dental radiography with this comprehensive quiz designed for students and professionals alike. Dive into questions that cover key concepts such as radiation types, image quality, and safety practices.

Topics included:

X-ray production
Radiographic contrast
Radiation safety
Image quality indicators

50 Questions12 MinutesCreated by RadiantSmile347

100. ដំណាក់កាលទី៥នៃការលាងហ្វិលគឺ:

σ� Developing

σ� Fixing

σ� Washing

σ� Drying

101. X-rays and Gamma rays are a form of:

σ� Light

σ� Particle radiation

σ� Electromagnetic radiation

σ� All are corrects

102. Undercut is the loss of resolution at a sharp, thickness transition area due to:

σ� Scattering within the part

σ� Backscatter

σ� Sidescatter

σ� Scattering within the film

103. Image quality indicators (IQIs) provide information about the level of:

σ� Resolution and contrast sensitivity

σ� Resolution and film latitude

σ� Contrast sensitivity and latitude

σ� Contrast sensitivity only

104. The number of X-ray or Gamma photons that are transmitted through a material depends on the:

σ� Energy of the photons

σ� Thickness of the material

σ� Atomic number of the material

σ� All of the above

105. Bremsstrahlung production of X-rays produces radiation that is composed of:

σ� A small number of very defined energies

σ� A continuous spectrum of energies over some range

σ� Radiation of only one energy

σ� None of the above

106. Which two types of radiation-matter interactions account for the majority of attenuation in typical industrial radiography? :

σ� Compton Scattering and photoelectric absorption

σ� Compton Scattering and pair production

Pair production and photoelectric absorption

σ� None of the above

107. X-ray generators produce radiation through:

Bremsstrahlung processes

σ� K-shell emmission processes

σ� Radioactive decay

σ� Bremsstrahlung processes and K-shell emmission processes

108. Radiation beam filters are sometime used in X-ray radiography to:

σ� Remove some of the low energy radiation to increase definition

σ� To remove some of the low energy radiation to increase contrast sensitivity

σ� Remove some of the low energy radiation to reduce definition

σ� All are corrects

109. Lowering the energy of the radiation used to produce a radiograph will generally result in:

Less latitude

σ� Higher contrast sensitivity

σ� A Longer exposure time

σ� All of the above

110. Radiographic contrast describe:

σ� The sharpness of lines in a radiograph

σ� The differences in photographic density in a radiograph

σ� The average photographic density in a radiograph

σ� The difference in density between two different radiographs

111. A specific radioactive source will always produce gamma rays at the same:

σ� Intensity

σ� Activity

σ� Energy levels

σ� None of the above

112. X-rays and Gamma rays:

Always travel in a straight line

σ� Can be influenced by an electrical field

σ� Can be influenced by a magnetic field

σ� None of the above

113. X-rays and Gamma rays are often referred to as photons because:

σ� They possess a charge

σ� They have mass

σ� They occur as small packets of energy

σ� None of the above

114. Newtons Inverse Square Law is useful in radiography because it indicates how the radiation intensity is affected by:

σ� Radioactive decay

σ� Distance from the source

σ� The size of the source

σ� None of the above

115. The main advantage of real-time radiography over film is:

σ� Higher image contrast sensitivity

σ� Inspection can be performed more rapidly

σ� Higher image definition

σ� Lower equipment costs

116. Higher energy radiation will have more:

σ� Speed

σ� Incident Intensity

σ� Penetrating power

σ� Incident Intensity and Penetrating power

117. Image quality indicators are usually placed:

σ� Anywhere on the back side of the film

σ� On the front side of the film near the primary area of interest

σ� On the front side of the test component in an area of similar thickness to the primary area of interest

σ� On the back side of the test component in the area of interest

118. Exposure to ionizing radiation can be limited:

σ� With the use of shielding

By increasing distance form the source

σ� By limiting the time exposed to the radiaiton

σ� All of the above

119. The Film contrast is determined by:

σ� Type of film used

Process by which the film was developed

σ� Radiation energy used

σ� Type of film used and the process by which the film was developed

120. Collimators are used to:

σ� Reduce the radiation beam spread

σ� Filter the radiation beam

σ� Increase film latitude

σ� Decrease film latitude

121. Stationary lab or shop X-ray systems usually rely on what to limit exposure to the radiation?:

σ� Distance controls

σ� Time limits

σ� Shielding

σ� All of the above

122. The amount of geometric unsharpness in a radiograph is affected by:

σ� The source to film distance

σ� The source to object distance

σ� The size of the source

σ� All of the above

123. X-rays and Gamma rays:

Are both affected by radioactive decay

σ� Are both produced by a radioactive atom

σ� Have completely different properties

σ� Differ only in their source

124. Radiographic inspection should be used for crack detection only when:

The crack is large

σ� The test componet is a casting

σ� The test component is a weldment

σ� The orientation of the crack is known

125. Who is given credit for the discovery of radioactive materials?:

σ� Henri Becquerel

σ� Wilhelm Roentgen

σ� Marie Curie

σ� Pierre Curie

126. Unexposed X-ray film is comprised of a plastic, transparent base coated with an emulsion containing radiation-sensitive particle known as:

Metalic silver crystals

σ� Silver halide grains

σ� Metalic silver crystals AND Silver halide grains

σ� Neither Metalic silver crystals and Silver halide grains

127. Manmade sources of radioactive sources are produced by:

By splitting the nucleus of atoms in the source material

σ� Adding electrons to the source material

σ� Introducing an extra neutron to the atoms of the source material

σ� None of the above

128. In dental radiography, the quality of the x-ray beam is controlled by:

σ� Kilovoltage peak

σ� Milliamperage

σ� Exposure time

σ� Source-to-receptor distance

129. A higher kilovoltage produces x-rays with:

σ� Greater energy levels

σ� Shorter wavelengths

σ� More penetrating ability

σ� All of the above

130. Identify the unit of measurement used to describe the amount of electric current flowing through the x-ray tube:

σ� Volt

σ� Ampere

σ� Kilovoltage peak

σ� Force

131. Radiation produced with high kilovoltage results in:

σ� Short wavelengths

σ� Long wavelengths

σ� Less penetrating radiation

σ� Lower energy levels

132. In dental radiography, the quantity of radiation produced is controlled by:

σ� Kilovoltage peak

σ� Milliamperage

σ� Exposure time

σ� Milliamperage and exposure time

133. Increasing milliamperage results in an increase in:

σ� Temperature of the filament

σ� Mean energy of the beam

Number of x-rays produced

σ� Temperature of the filament and number of x-rays produced

134. Identify the milliamperage range for dental radiography:

1 to 5 mA

σ� 4 to 10 mA

σ� 7 to 15 mA

Greater than 15 mA

135. The overall blackness or darkness of an image is termed:

σ� Contrast

σ� Density

σ� Overexposure

σ� Polychromatic

136. If kilovoltage is decreased with no other variations in exposure factors, the resultant image will:

σ� Appear lighter

σ� Appear darker

σ� Remain the same

σ� All are corrects

137. Identify the term that describes how dark and light areas are differentiated on an image:

σ� Contrast

σ� Density

σ� Intensity

σ� Polychromatic

138. A radiograph that has many light and dark areas with few shades of gray is said to have:

σ� High density

σ� Low density

σ� High contrast

σ� Low contrast

139. The total energy contained in the x-ray beam in a specific area at a given time is termed:

σ� Kilovoltage peak

σ� Beam quality

σ� Intensity

140. A beam of energy that has the power to penetrate substances and record image shadows on photographic film.:

σ� X-ray

σ� X-radiation

σ� Radiography

σ� Radiograph

141. Coolidge:

σ� Discovered x-rays

σ� Developed first x-ray tube

σ� Introduced bisecting technique

σ� Exposed first dental radiograph

142. Fitzgerald:

σ� Developed first x-ray tube

σ� Wrote first paper on the danger of x-radiation

σ� Exposed first dental radiograph in United States (skull)

σ� Introduced long-cone paralleling technique

143. Kells:

σ� Exposed first dental radiograph in United States (skull)

σ� Introduced long-cone paralleling technique

σ� Wrote first dental text; introduced bite-wing technique

σ� Exposed first dental radiograph in United States (living patient)

144. The components of xray machine is:

σ� Tubehead

σ� Extension arm

σ� Control panel

σ� All are corrects

145. The components of xray film is:

σ� Film base

σ� Adhesive layer

σ� Film emulsion, and protective layer

σ� All are corrects

146. The types of film used in dental radiography is:

σ� Intraoral film

σ� Extraoral film

σ� Duplicating film

σ� All are corrects

147. The steps in film processing is:

σ� Development

σ� Fixation and rinsing

σ� Washing, and drying

σ� All are corrects

148. Chemical solution used in development process to reduce the exposed, energized silver halide crystals:

σ� Developer

σ� Washing

σ� Drying

σ� All are corrects

149. The developer solution basic ingredients is:

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Part3 Dental Imagery (100-149) Prof. Pen Nun

Dental Radiography Quiz

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