Radiographic Flashcards
(20 cards)
Radiographs are NOT
Diagnostic of periodontal disease
Correlate with clinical attachment level
<20% bone loss
Slight
21-49% bone loss
Moderate
3-4 mm
Assessing Bone Loss
CEJ->Crest -2mm
____________________
CEJ->Apex-2mm
The of the crest lies at
A level approximately 2 mm below the level of the CEJs of adjacent teeth
Can radiographic integrity of crystal lamina dura be used as an indicator
Cannot be used as indicator of periodontal treatment
Pattern of Bone Loss
Horizontal bone loss
Vertical (angular) bone loss
Hemiseptal defect
A vertical defect in the presence of adjacent roots; thus half of a septum remains on one tooth, AKA one walled defect
Osseous Crater
A cup or bowl shaped defect in the interalveolar bone
Two walled defect
Moat-like Defect
An intrabony resorptive lesion invoking or or more surfaces of supporting bone
How doe furcation loss show up
As a radiolucency
The PDL appears as
The PDL space of .4-1.5 mm on radiographs
The PDL tends to be
Wider at the apex and alveolar crest and narrow in the mid root areas
Vessels within interdental bone appear as
Radiolucent lines boarded by thin radiopaque lines
Mandibular tori
A bone exostosis on the lingual aspect of the mandible generally in the premolar region commonly bilateral
The image of the mental foramen can be seen as far forward as
The distal of the 1st premolar and as far posteriorly as the mesial of the 1st molar
If the roots are less than ______ apart periodontal bone loss will_______
2.5 mm
Affect the entire interproximal
Crown to root ratio
Ratio of length of the tooth outside of bone to length of toothin in bone
Internal resorption
Tooth resorption begiingin from within the pulp
External resorption
Resorption of tooth structure beginning on the external surface
