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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The bite-wing film is used to |
detect interproximal caries and assess the condition of the alveolar bone. |
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What size bite-wing receptor is most commonly used, and for what type of dentition? |
Size 2 is most commonly used, and is for permanent dentition. |
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How should the patient's head be positioned when taking bite-wings? |
Maxillary arch should be parallel to the floor, and the midsaggital plane is perpendicular to the floor. (Not necessary when using beam alignment device) |
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Where is the receptor placed for premolar bite-wings? |
The receptor front edge is centered through the distal of the canine. |
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Where is the receptor placed for molar bite-wings? |
The receptor front edge is centered through the distal of the second premolar. |
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What order should you take bite-wings? |
Begin with premolars then move to molars, and complete one side at a time. |
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Incorrect horizontal angulation results in |
overlapped interproximal areas. |
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Incorrect vertical angulation results in... |
distortion of the tooth and/or uneven distribution of the maxillary and mandibular crowns of the teeth. |
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The front edge of the receptor should be positioned |
through the 2nd molar in order to capture the distal on the image. |
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Why are vertical bite-wings used? |
To assess the condition of alveolar bone and evaluate periodontal conditions. |
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When using a cotton roll for edentulous spaces, what should you pay careful attention to? |
Ensure the cotton roll does not rest on top of the occlusal surface of the teeth that are present. |
What surface should the cotton roll not touch? |
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Why is a cotton roll used? |
In order to keep the film parallel to the occlusal plane in edentulous patients. |
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If lingual tori are present, the film or receptor must be placed where? |
Lingual or behind the torus & toward the midline. |
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What happens if the top edge of the film contacts the palatal gingival ledge? |
The film may be pushed down into the floor of the mouth as the patient closes, and will result in a bite-wing that looks more like a periapical film. |
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What causes a cone-cut? |
If the PID is not positioned properly, the x-ray beam may not cover the entire film and will cause a cone-cut. |
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