Which of the Following Is True Regarding Trimming of Models

question 16

Multiple Choice

Which of the following is true regarding trimming of models with a model trimmer?

• A) Bases and anatomic portions should be soaked for 5 to 10 minutes before trimming.
• B) The casts should be trimmed so that proportionately the base makes up one third and the anatomic portion two thirds of the total depth.
• C) The occlusal plane should be perpendicular with the base.
• D) The anterior portion of both the maxillary and mandibular arch models should be trimmed to a point at the midline.

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