Juan F. Yepes, DDS, MD Normal Radiographic Appearances / Anatomy Normal Radiographic Appearances /...

Juan F. Yepes, DDS, MD

Normal RadiographicAppearances / Anatomy -

Juan F. Yepes, DDS, MD, MPHAssistant Professor

Division of Oral Diagnosis, Medicine and RadiologyODM 820 Spring 2009

Juan F. Yepes, DDS, MD

Diagnosis vs. Interpretation

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Diagnosis is the responsibility of the clinician caring for the patient.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Interpretation is the result of evaluation of specific circumscribed tests or investigative procedures, such as radiology, and may be carried out by a specialist or the clinician

caring for the patient.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Diagnosis (dia: through; gnosis: knowledge) is the result of gathering knowledge via the history, clinical examination, and any other investigative procedures that are deemed necessary.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

It is possible that the radiologic interpretation may seem to provide all of the information that is needed for the diagnosis...

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

…but it must still be correlated with the clinical findings before a diagnosis is made.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Terminology is of importance. It will guide us in organizing our thoughts, allow us to search for information that we need, explain this to our patients, and communicate accurately with our colleagues.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Radiolucent An adjective used to describe any substance (part of the patient) that readily permits the transmission of x rays.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Radiopaque An adjective used to describe any substance (part of the patient) that blocks the transmission of x rays.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Note Both adjectives refer to the object not the image on the radiograph. The terms are relative. Bone is more radiopaque than soft tissue, but more radiolucent than enamel.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Density An adjective used to describe the ability of the film (or part of the film) to block the transmission of light. In other words, it refers to the “blackness” of all or part of the film.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Contrast The difference in density of two neighboring areas on the radiograph (usually determined using a stepwedge).

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Detail The visibility of the fine structure in the image of the object under investigation.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Definition The sharpness of the image of the fine structure of the object under investigation.

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Relative Radiopacities/Radiolucencies

Most Radiopaque

Most Radiolucent

Metal (restorations, suture, bullet fragments) Radiopaque white restorations and cements Enamel Dentin Cementum Cortical Bone Cancellous Bone Calculus, dystrophic calcification Soft tissues (including normal cartilage) Body Fluids Radiolucent white restorations and cements Fat Air

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

CementMetal (Amalgam)Enamel

Dentin

CementumSoft tissue (Pulp)

Soft tissue (Periodontal ligament)

Soft tissue (Gingiva)

Air

Cortical bone

Cancellous bone

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Radiographic Appearances of

Teeth

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Pulp Chamber And

Root Canal

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Alveolar Process and

Alveoli

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Alveolar process

Alveolus

Basal bone

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Lamina Dura

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Periodontal Ligament Space

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Crest of the

Alveolar Process

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

Normal Radiographic Appearances

Juan F. Yepes, DDS, MD

CONCLUSIONS