RHS Exam UPDATED ACTUAL Questions and CORRECT Answers
structures that are less dense and allow radiant energy to pass through (the dark to
grey spots on x-ray)
Radiolucent
soft or less dense, tissues and structures allow radiant energy to pass through
includes periodontal ligaments and pulpal tissues
portions on radiograph appears light or white
Radiopaque dense structures block or slow the passage of radiant energy
ex: dentin, enamel and bone or metal and resin reinforced restorations
A form of dental restoration that uses a
combination of two or more metals, one of which
is mercury; a blend of powdered metal alloy and
mercury to produce a restorative material.
Amalgam Restoration
because amalgam is mainly composed of metal,
radiant energy cannot pass through it causing the
image to appear white or light
form of radipaque
The intersection of the maxillary sinus and the nasal cavity
Inverted Y above canine
appears as radiopaque
, Large air-filled cavities located above the maxillary premolar and molar teeth
Maxillary Sinus appear radiolucent on maxillary pre-molar and molar periapical images
the outline of the denser tissue (floor of sinus) appears radiopaque
periapical images radiograph that exposes the entire tooth and surrounding tissues
Small passageways through bone that contain blood vessels, nerve tissue, and
lymphatic tissue that supply the teeth
Nutrient canals
may appear as radiolucent lines
called pulp tissue once they enter the tooth
A radiopaque band that extends downward and forward from the ramus
Internal Oblique Ridge When both appear, the external oblique ridge is superior to the internal oblique
ridge
A radiolucent band outlined by two thin radiopaque lines that represent the cortical
Mandibular Canal
walls of the canal
Bony ridge that contains the alveoli (tooth sockets)
Alveolar ridge
appears radiopaque
Covers the crown of the tooth and protects the dentin
Enamel hardest calcified tissue in the human body
appears radiopaque
Hard portion of the root that surrounds the pulp and is covered by enamel on the
Dentin
crown and by cementum on the root
dentinoenamel junction Line marking the junction of the dentin and the enamel
The tissue that contains the blood vessels and nerves of a tooth
Pulp
radiolucent
Periodontal ligament attaches tooth to jaw
X-ray a form of electromagnetic radiation used to produce dental images
enough energy to dislodge electrons from atoms, forming ions; capable of causing
ionizing radiation
cancer (gamma, X-rays, UV)
Radiation Process of emission, transmission, and absorption of radiant energy
Ionization The conversion of a stable atom into an ion that forms an ion pair
after the timer button is pressed, when the electrons are pulled from the cathode to
General or braking radiation occurs
the tungsten target
When the electrons hit the tungsten target, heat and x-rays
their kinetic energy is converted to
Control settings can be set lower when digital imaging
using
the one absorbed by the patient
Primary Radiation
unobstructured, short wave x-ray beams produced by the unit and emitted from the
x-ray tube
structures that are less dense and allow radiant energy to pass through (the dark to
grey spots on x-ray)
Radiolucent
soft or less dense, tissues and structures allow radiant energy to pass through
includes periodontal ligaments and pulpal tissues
portions on radiograph appears light or white
Radiopaque dense structures block or slow the passage of radiant energy
ex: dentin, enamel and bone or metal and resin reinforced restorations
A form of dental restoration that uses a
combination of two or more metals, one of which
is mercury; a blend of powdered metal alloy and
mercury to produce a restorative material.
Amalgam Restoration
because amalgam is mainly composed of metal,
radiant energy cannot pass through it causing the
image to appear white or light
form of radipaque
The intersection of the maxillary sinus and the nasal cavity
Inverted Y above canine
appears as radiopaque
, Large air-filled cavities located above the maxillary premolar and molar teeth
Maxillary Sinus appear radiolucent on maxillary pre-molar and molar periapical images
the outline of the denser tissue (floor of sinus) appears radiopaque
periapical images radiograph that exposes the entire tooth and surrounding tissues
Small passageways through bone that contain blood vessels, nerve tissue, and
lymphatic tissue that supply the teeth
Nutrient canals
may appear as radiolucent lines
called pulp tissue once they enter the tooth
A radiopaque band that extends downward and forward from the ramus
Internal Oblique Ridge When both appear, the external oblique ridge is superior to the internal oblique
ridge
A radiolucent band outlined by two thin radiopaque lines that represent the cortical
Mandibular Canal
walls of the canal
Bony ridge that contains the alveoli (tooth sockets)
Alveolar ridge
appears radiopaque
Covers the crown of the tooth and protects the dentin
Enamel hardest calcified tissue in the human body
appears radiopaque
Hard portion of the root that surrounds the pulp and is covered by enamel on the
Dentin
crown and by cementum on the root
dentinoenamel junction Line marking the junction of the dentin and the enamel
The tissue that contains the blood vessels and nerves of a tooth
Pulp
radiolucent
Periodontal ligament attaches tooth to jaw
X-ray a form of electromagnetic radiation used to produce dental images
enough energy to dislodge electrons from atoms, forming ions; capable of causing
ionizing radiation
cancer (gamma, X-rays, UV)
Radiation Process of emission, transmission, and absorption of radiant energy
Ionization The conversion of a stable atom into an ion that forms an ion pair
after the timer button is pressed, when the electrons are pulled from the cathode to
General or braking radiation occurs
the tungsten target
When the electrons hit the tungsten target, heat and x-rays
their kinetic energy is converted to
Control settings can be set lower when digital imaging
using
the one absorbed by the patient
Primary Radiation
unobstructured, short wave x-ray beams produced by the unit and emitted from the
x-ray tube
