Each level of evaluation for a case (set of records) requires an accurate representation of the dentition, immediate supporting structures and occlusal relationships. Dental casts should be obtained from impressions that extend far enough into the sulcus to allow accurate reproduction of all soft tissue anatomy.

Choice Of Presentation

a) ABO cast preparation should be trimmed in maximum intercuspation or in the intercuspal position. Documentation of a significant difference between the intercuspal and centric relation should be provided; a dimensionally stable bite registration is preferred. Second molars should be fully erupted and in their final position on the posttreatment casts.

b) Casts on an adjustable articulator in may be presented. Sufficient articulators must be provided to allow ease of examiner observation, with a minimum of one articulator per case report.

c) Digital casts - Digital casts submitted in a computer format are acceptable for pre-treatment casts only. See Electronic Guidelines

Cast Alterations

Trimming or carving on the anatomical portion of the dental casts should be limited to the removal of bubbles and effects. Alteration of tooth anatomy is considered records falsification. A fixed retainer may be in place when posttreatment casts are made. After the casts are prepared, casts should be smoothed and polished in such a manner that tooth and soft tissue detail is not destroyed.

Identification Of Dental Casts

Each dental cast (maxillary and mandibular) must be individually identified with the appropriate labeling.

ABO trimmed casts are identified on the "backs" as described in Record Requirements and Identification .

Articulated casts are identified with labels placed either on an individual articulator for a set of casts or on the posterior surface of the mounting stone of each cast.

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Dental Cast Guide