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Radiology chapter 34
| Question | Answer |
|---|---|
| Refers to tissues that invest and support teeth, such as the gingiva and alveolar bone | Periodontium |
| What are the normal anatomic landmarks of alveolar bone | lamina dura alveolar crest periodontial ligament |
| Appears as a dense radiopaque line around the roots | Lamina (surrounds aveolar crest) |
| Where is normal healthy alveolar crest located | 1.5 to 2.0 mm apical to the cemento enamel junctions |
| In the anterior region how does the alveolar crest look? | pointed sharp radioopaque |
| In the posterior region how does the alveolar crest look? | flat smooth parallel to a line between cej less radio opaque than anterior regions |
| Space appears as a thin radiolucent line between the root and the tooth and lamina dura | Periodontal ligament space |
| Term that means around tooth | periodontal |
| a group of diseases that affect the tissues around teeth | Periodontal disease |
| Perio disease may range from a superficial inflammation of the gingiva to the destruction of supporting bone and the | periodontal ligament |
| What is the first part of bone that gets destroyed in perio disease | lamina dura |
| When perio disease is involved the alveolar crest appears indistinct and | bone loss is seen |
| What is the preferred periapical exposure method for the demonstration of the anatomic features of periodontal disease? | Paralleling technique |
| What technique causes a dimesnisonal distortion of bone results due to verticle angulation | bisecting technique |
| bisecting technique can show what in periapical images | more or less bone loss |
| What should not be used to document moderate to severe periodontal disease | Horizontal bite wing image |
| What is used in imaging for best use for post treatment and follow up purposes | vertical bitewing images |
| What has little diagnostic value for periodontal disease | panoramic image |
| T/F dental images alone cannot be used to diagnose periodontal disease | True |
| Dental images are______dimension images of _______ dimensional structures | 2/3 |
| What are difficult to examine in a image | buccal and lingual aspects and furcation area |
| The area between the roots of multirooted teeth | Furcation areas |
| What are the patterns of bone loss viewed in a dental image | vertical or horizontal |
| The bone loss occurs in a plane parallel to the CEJs of adjacent teeth | horizontal bone loss |
| The bone loss does not occur in a parallel to the CEJ of adjacent teeth | vertical bone loss(angular bone loss) |
| Occurs in isolated areas less than 30% | Localized bone loss |
| Occurs evenly throughout the dental arches with more than 30% | Generalized bone loss |
| What are the 3 ways bone loss can be classified | slight,moderate or severe |
| Measured in mm from the CEJ to the base of the pocket | THe CAL |
| The severity of bone loss is measured by the CAL which means | clinical attachment loss |
| Cal is measure by the | Clinical periodontal probe |
| What must be considered when measuring the cal | recession or gingival overgrowth |
| 1 to 2mm | slight bone loss |
| 3 to 4 mm | moderate bone loss |
| 5mm or greater | severe bone loss |
| what bone loss is related to age and plaque | horizontal bone loss |
| what bone loss is localized and more agressive | ventricle bone loss |
| Class I | gingivitis |
| Class II | slight to moderate periodontitis |
| NO bone loss is associated with type | I |
| In what type is the crestal lamina dura present and the alveolar crest is approximately 1 to2 m apical to the CEJ | ADA Case Type 1 |
| BOne loss associated with mild or slight periodontitis has mild crestal changes. Lamina dura becomes unclear and fuzzy. Has horizontal bone loss 3 to 4 mm apical to the CEJ | ADA Case Type II |
| Horizontal or vertical bone loss can be localized or generalized. Alveolar cone level 4 to 6 mm furcation icocement or pocket depths and attachment loss up to 6 mm are evident . Recession furcation involvement areas and slight mobility may also be present | ASA case type IV |
| Stone like concretion that forms on the crowns and roots of teeth due to the calicfication of bacterial plaque |
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erikafs6