Chapter 10 Dental Radiology and imaging

when taking dental radiographs, you need how much of normal bone around the tooth

2-3mm

what teeth use parallel technique

mandibular premolars 3 and 4 and molars

what technique is used for dog mandibular premolar 3 and 4 and all teeth distal

parallel technique

what technique is used for dog mandibular premolars 1 and 2

bisecting angle from lateral aspect

what technique is used for dog mandibular canines

rostro caudal oblique

what technique is used for dog mandibular incisors

bisecting angle centered over the chin (parallel to the tabetop)

what technique is used for dog maxillary incisors

bisecting angle centered over chin

what technique is used for dog maxillary canines

bisecting angle rostro caudal oblique

what technique is used for dog maxillary premolars and molars

bisecting angle lateral aspect

what technique is used for dog upper fourth premolars

distolateral oblique

what technique is used for cat mandibular premolar 3 and all teeth distal

parallel teeth

what technique is used for cat mandibular canines and incisors

bisecting angle centered over chin (parallel to tabletop)

what technique is used for cat maxillary incisors

bisecting angle centered over chin (parallel to tabletop)

what technique is used for cat maxillary canine

bisecting angle rostro caudal oblique

what technique is used for maxilary premolars and molar

1. intraoral (modified parallel)

2. extraoral technique (outside of tooth)

why are radiographs taken

1. Establish normal anatomy

2. Determine extent of Periodontal disease

3. Discolored teeth

4. Sub-orbital swelling

5. Oral surgery: extractions pre and post

6. Missing teeth

7. Tooth resorption

when is it normal for a wide pulp cavity

immature teeth

should be smooth homogeneous in the crown and root

dentin

should be a consistent width that is smooth at the rooth

periodontal ligament

what should be looked for run the alveolar bone

1. Crestal bone normal

2. % bone loss

3. Horizontal and vertical loss

4. Periapical bone loss

5. Reactive bone

6. Radioleucenties

what are other things to evaluate for the oral cavity

1. Evaluate percent of bone loss

2. Greater than 50% need to extract

3. Root absorption

4. Determine the number of roots

what causes discolored teeth

1. Blunt trauma

2. Tetracycline use

3. Internal reabsorption

4. External stains

5 Mineral uptake from drinking water

how is discolored teeth treated

1. endodoratic (root canal)

2. extraction

92.2% of discolored teeth have what

partial / total pulp necrosis

what are the common causes of sub-orbital swelilng

1. abscesses

2. neoplasia

3. cysts

what position are maxillary shots given

sternal

what position are mandibular shots given

dorsal

sternal position is done at what

1. 100's

2. 200's