All second premolars are scored in the Buccolingual Inclination parameter. The Cast-Radiograph Instruction Sheet indicates this requirement in the “Buccolingual Inclination” section.

If the third molars are substituted for the second molars in the final occlusal scheme, the thirds are scored exactly as second molars. The third molars are not scored if the first and second molars are present.

Be sure to consult the Discrepancy Index instructions as these are very specific for each parameter. In answer to your question, Overjet is measured from the facial surface of the most lingual tooth (Mx or Mn) to the middle of the incisal edge of the most facially positioned tooth (Mx or Mn).

This answer depends on the parameter you are scoring. The examinee must consult the instructions for each parameter for accuracy. For example, in scoring Overjet the canines are not considered anterior teeth, but the canines are considered anterior teeth in the Anterior Open Bite parameter.

An imaginary line of occlusion is constructed from the mesial of the first molars over the mid-alveolus of the most crowded or spaced arch. Perimeter deficiency or excess is then noted and scored.

Yes. Likewise, a panoramic film taken three months before treatment completion could be used as a final record.

The board seeks symmetry in model base trimming. A five degree tolerance in base angles is acceptable.

The ABO is prepared to accept pretreatment and allowable interim digital casts in the following formats: Cadent’s OrthoCAD Vers 3.25 or later, GeoDigm’s eModel and Orametrix’ SureSmile.

• Transparent media is not used for tracings; therefore, reference points cannot be verified.
• Cephalogram and tracing or superimposition are not in 1:1 ratio.
• Superimpositions are not registered according to specifications at Composite Tracings.

Yes. You can format the lateral cephalogram and panoramic views in JPEG images. Note that the lateral cephalogram will be available from either the left or right side of the mid-sagittal plane. Therefore you must maintain consistency in whichever side you choose to display, so comparison of pre- and post-treatment images are valid. CBCT images are also acceptable for periapical radiographs if required.

The second molars must be erupted and should be aligned in cases submitted for the ABO Clinical Examination. The second molars are scored on the Cast Radiographic Evaluation form.

In order for this case to satisfy the requirement of a four quadrant extraction case, pre-extraction records would need be produced and presented. If these records are not available, the case would not fulfill the extraction case requirement. However, the case could be presented if the Discrepancy Index was sufficient to qualify it for the Clinical Examination.