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Radiology
| Question | Answer |
|---|---|
| To avoid overlap | direct x-ray beam through the interproximal |
| when using the occlusal technique film is positioned | white between the occlusal surfaces |
| Which of the following is a maxillary occlusion projection but not a mandibular | Lateral |
| Elongation | Long, infussient |
| Size 2 film total of _____ anterior | 6 |
| Horizontal | side to side vertical up and down |
| which occlusion project is used to locate foreign body | cross sectional |
| Maxillary topographical what degree | 65 |
| The appearance of a its finger is a | flangioma |
| When film is reversed | herringbone |
| a ref radiograph is used to evaluate | developer strength |
| radiocluctant refers to the portion to the film that is | black |
| The lingual cusp of the 1st molar used obscures the distal of the canine | maxillary canine |
| The film emulsion is softened during | developer |
| A____ is a tube like a passage way thru the bone that contains nerves and fossa | bone |
| A foreman is a | opening or hole in the bone that permits the blood vessel |
| A_____ is a bony wall that divides two walls | septum |
| how does a sature appear | radioluctant |
| The lateral fassa is located between | maxillary lateral incisor and canine |
| The inverted Y refers to the nasal cavity and maxillary sinus | |
| Hydroquine generates black tones and Sharpe contrast | |
| The fixer is removing | unexposed silver hyaloid crystals |
| The accelerator the developer is | sodium carbonate |
| KVP (strength) represents the amount of energy that passes through the tube head and where MA (many) refers to the strength of the energy being passed through the tube head | None are true |
| Developer solution decreases the decrees in strength | |
| Potassium bromoimide | restrainer |
| Fixer but not developer | alum |
| Softens emulsions | sodium carbonate |
| lingual mounting method | labial |
| When overlap contacts occur | horizontal |
| Bisection | size 2 for post anterior |
| radiation is defined as | a form of energy carried by waves or streams or particles |
| The importance of dental radiographs | many diseases are typically only discovered through this type of radiographs |
| The Xray was discovered by | Willheim Roentgen |
| The first person in the USA exposed to dental radiograph was | Edmund Kells |
| the formation of a latent image | The film is placed in the lingual of the teeth |
| The latent image is stored by the ______ in the dental X-ray film | Silver Halide crystals |
| The areas of the film that are more energized are | darker |
| The areas of the film that are less energized are | lighter |
| ______ film is placed inside the mouth | Intraoral film |
| A two film packet requires _____ exposure time as a one film packet | the same |
| The identification dot is used to | determine film orientation |
| The tube side of the dental film packet | solid white |
| The type of intraoral film used to examine the crowns of both the maxillary and the mandibular teeth on one film | bite wing film |
| The apex (tip) of the tooth roots may be seen on which types of intro film | periodical |
| Which type of intramural film is best for visualizing inter proximal surfaces | bite wing |
| A # ___ size film is a standard adult periodical film | 4 |
| Which size of bitewing film is use to examine posterior teeth in very small children | 0 |
| A size # ____ film is the most frequently used bite wing film | 2 |
| a fast film responds more quickly than a slow film because | The silver halide crystals in the emulsion are larger |
| film is best stored in a n area that it | cool and dry |
| the film base is __ mm thick | 0.2 |
| the film emulsion is | attached to both sides of the film |
| The film emulsion is composed of homogenous mixture of | Gelation and silver halide crystal |
| Retakes resulting in unnecessary patient exposure to x-radiation must be avoided | at all times |
| to avoid occupational exposure to x-rediation the radiographer must always | avoid the primary beam |
| radiographs enable the dental professional to see ____ conditions that may otherwise go undetected | many |
| When radiographs are properly prescribed,exposed, and processed the benefit of disease detection __ the risk of small does of x radiation | far outweighs |
| The position indicating device (PID) is an extension of the | tubehead |
| The____ activates the machine to produce X-rays | exposure button |
| during an exposure | a beep sound to signal initiations of the exposure |
| the film holder | is required when using the intraoral paralleling technique |
| the _____ intraoral radiographic examination is used to examine the entire tooth and supporting bone | periapicle |
| ______ is a extra oral technique for radiographic examination | panoramic |
| periapical radiographs must show the entire crowns and roots of the teeth being examined as well as _____ to ____ mm beyond the root apices | 2.0 :3.0 |
| There are _____ methods for obtaining periodical radiographs | two |
| which of the following methods is/ are used for obtaining periapicle radiographs | both a and b (bisecting and paralleling |
| In a patient without teeth ____ periapicle usually sufficient to cover edentulous areas | 14 |
| The rule of isometry states that two triangles are equal if they have ____ equal angles and share a common side. | two |
| Which size film is traditionally used with the bisecting technique | #2 film for anterior teeth and for posterior teeth |
| With the ___ technique, the vertical angulation is determined by the imaginary bisector the central ray is directed perpendicular to the | plane of the film |
| elongnatated images refer to the images of he teeth that appear _____. elongation of images result from ______ vertical angulation. | too long insufficient |
| When the bisecting technique is used the film must be placed along the ____ surface of the tooth | lingual |
| with size 2 film a total of ____ anterior film placements are used in the bisecting technique | six |
| according to the text the disadvantages of the bisecting technique outweigh the advantages. there fore the paralleling technique is proffered over the bisecting technique for exposure of pereipical film and should be used whoever possible | both statements are true |
| horizontal angulation refers to the placement of the position indication device (PID) in an ____ plane. Vertical angulation refers to the positioning of the PID in an ____ plane | side to side up and down |
| for the maxillary premolar exposure the front edge of the film should be aligned with the midline of the maxillary | canine |
| when the bisecting technique is used which of the following angles is bisected | the angle formed by the film and the long axis of the tooth |
| for the mandibular molar exposure the front edge of the film should be aligned with the midline of the | second premolar |
| when the bisecting technique is used the central ray is directed at 90 degrees the | imaginary bisector |
| Parallel is defined as: | Moving or lying in the same plane, always separated by the same distance and not intersecting. |
| Anterior film placements are less likely to cause the patient to gag. Once the gag reflex is stimulated, the patient may gag on films that could normally be tolerated. | The first statement is false; the second statement is true. |
| With size1 film, a total of ____ anterior film placements are used in the paralleling technique. | Seven |
| With the size 2 film, a total of ___ anterior film placements are used with the paralleling technique. | Six |
| ____ posterior film placements are used in the paralleling technique. | Eight |
| The lingual cusp of the first premolar usually obscures the distal contact of the canine on the ____ exposure. | Maxillary incisor |
| The entire crowns and roots of one lateral and one central incisor, including the apices of the teeth and surrounding structures, must be seen on the ___ radiograph. | Maxillary incisor |
| All crowns and roots of the first, second and third molars, including the apices, alveolar crests, contact areas, surrounding bone, and tuberosity region, must be seen on the ____ radiograph. | Maxillary molar |
| Reusable film holders must be ____ after each use. | Sterilized |
| Which of the following film holders include aiming rings that aid in the alignment of the position-indicating device )PID) with the film. | Rinn XCP instruments |
| An exposed film appears: | Clear |
| To prevent a dropped film corner: | Make certain the edge of the film is placed parallel to the incisor-occlusal surface of the teeth. |
| When overlapped contacts appear on film, the cause is: | Incorrect horizontal angulation. |
| To avoid overlapped contacts on periodical film: | Direct the x-ray beam through the inter proximal regions. |
| Short teeth with blunted roots appear of the film when: | The vertical angulation is excessive. |
| Long, distorted teeth appear on the film when: | The vertical angulation is insufficient. |
| A cone cut occurs when: | The PID was not properly aligned with the periapical film holder. |
| The appearance of a patients's finger on the film is called a: | Phalangioma |
| Blurred images appear on the film when: | There is patient movement. |
| When the film is reversed, the image will be: | Light with a herringbone pattern. |
| Which of the following films would most likely appear black? | A film exposed to light |
| An underexposed film results from: | Insufficient exposure time. |
| The occlusal technique is used to examine: | Large areas of the upper or lower jaw |
| For the maxillary topographic occlusal projection, the central ray is directed at ___degrees. | +65 |
| The dental radiograph is a ___-dimnesional picture of a ___-dimensional object. | Two; three |
| The buccal object rule depends on a ____ image shift when trying to locate vertically aligned images. With the buccal object rule, an object to the buccal of the reference object will move in the ____ direction as the shift. | Vertical; opposite |
| The "S" in row mnemonic SLOB stands for: | Same |
| According to the SLOB rule, when two radiographs are compared, the object that lies to the lingual appears to have moved in the same direction as the position-indicating device (PID), and the object that lies to the buccal appears to have moved in the opp | Both statements are true. |
| For the mandibular topographic occlusal projection, position the PID so the the central ray is directed ___ degrees towards the center of the film. | -55 |
| Which occlusal projection is used to locate foreign bodies or salivary stones in the region of the floor of the mouth> | Lateral occlusal projection |
| The bite-wing tab is a heavy paperboard tab or loop fitted around a periodical film and used to stabilize the film during exposure. The periodical film is oriented in the bite loop so that the tab portion extends from the white side (tube side) of the fi | Both Statements are true |
| Which of the following exposures sequences is recommended for the patient who requires both periodical and bite-wing radiographs? | Bite-wing exposures, Anterior periapical films, Posterior periapical films |
| Vertical bite-wings are often used for patients with: | Mixed dentition. |
| What modifications in technique is recommended when the patient has an edentulous space causing a problem with bite-wing film placement? | Place a cotton roll in te area of the missing tooth or teeth. |
| For the premolar bite-wing exposure, the front edge of the film should be aligned wth the midline of the : | Mandibular canine |
| According to the text, which size bite-wing film is NOT recommended? | Size 3 |
Created by:
BonnieCSATC
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