Dental Radiography

Dental Radiography



Basic Information image



Definition


Radiographs are two-dimensional of regional anatomy. Dental radiographs are complicated by superimposition of the skull and paranasal sinuses.



Typical Normal Radiographic Findings


Although teeth have a complicated internal architecture, their relationship to the mandible, incisive bone, and maxilla have similar characteristics.



• Cementum: The external surface of each tooth that operates as a single functional unit with the periodontal ligament


image Appears as clearly demarcated radiolucent line that abuts the thin shelf of very dense bone termed the dental lamina dura.

• Lamina dura appears as a thin, well-defined radio-opaque line.


image In the mandible, incisive bone, and rostral maxilla, the lamina dura is more opaque than the surrounding trabecular bone often term the alveolar bone. The caudal maxillary cheek teeth have reserve crown and roots that reside within the rostral and caudal maxillary sinuses.

image The radiolucent periodontal ligament and the radiopaque lamina dura are readily evident in the normal horse (Figure 1).

• Because dental disease frequently results in infectious or inflammatory lesions of the sinuses and surrounding bone, these characteristics are pivotal in the accurate identification of abnormal teeth (Figure 2).


• Changes with advancing age


image Particularly evident when evaluating the pulp horns and tooth roots (Figures 3 and 4).

image In very young horses, the germinal tissue of the teeth appear as wide radiolucent zones with some evidence of radio-opaque dental tissue within the respective bones.
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Jul 24, 2016 | Posted by in SMALL ANIMAL | Comments Off on Dental Radiography

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