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7 Cards in this Set
- Front
- Back
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Impression |
Negative reproduction (given area of oral cavity) Includes hard and soft tissues Replica of dental structures is produced |
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Dental Technicians and Hygienists |
Not allowed to take an impression |
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Preliminary Impression |
Taken by dentist or an expanded-function dental assistant To make a reproduction of the teeth and surrounding tissues |
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Preliminary Impressions are used to make the following |
Diagnostic models Custom trays Provisional coverage Orthodontic appliance Pre-treatment and post-treatment records |
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Final Impression |
Taken on by a dentist Accurate production of the teeth and surrounding teeth (includes the margin of gingiva) Used to make indirect restorations, partial or full dentures and implants |
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Bite Registration |
Taken by dentist or dental assistant Focuses on the occlusal relationship of the maxillary and mandibular teeth Accurate registration of the patient’s bite or centric relationship between max. and mand. arches |
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Desirable properties of Impression Materials |
Ease of Manipulation Adequate flow and wetting properties |
