The completed impression forms a _____ reproduction of the teeth and tissues,and the replica or model forms a _____ replica of the teeth and tissues.

Question

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The completed impression forms a negative reproduction of the teeth and tissues,and the replica or model forms a positive replica of the teeth and tissues.The replica is called a cast or model.In the initial diagnosis and treatment planning phase,the dentist may request that the dental assistant or hygienist make impressions of the teeth and surrounding structures so that diagnostic casts,commonly called study models,can be made for further study when the patient is no longer present.

The Completed Impression Forms a _____ Reproduction of the Teeth