Use of a scanning laser three-dimensional digitizer to evaluate dimensional accuracy of dental impression materials
1992; Elsevier BV; Volume: 68; Issue: 2 Linguagem: Inglês
10.1016/0022-3913(92)90319-6
ISSN1097-6841
AutoresDonald C. Quick, James R. Holtan, Greg K. Ross,
Tópico(s)Dental Research and COVID-19
ResumoA steel die was machined to represent a dental arch with teeth prepared for complete crowns. Impressions and casts were made from the die, and critical dimensions were measured by two methods--one using micrometers and the other a scanning laser three-dimensional (3-D) digitizer. The digitizer recorded measurements were more precise than the micrometer's and virtually eliminated operator error because the acquisition of data was automatic. The digitizer could also be useful for high-precision analyses of the dimensional accuracy of dental impression materials, but the cost and complexity of the instrument makes it less desirable for low-precision work.
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