Reliability of antagonistic arch impression in dental prostheses: clinical evaluation of different preimpression preparation procedures.
This study compared the influence of different methods of preimpression preparation on the quality of occlusal reproduction in irreversible hydrocolloid impressions. A total of 30 impressions of the lower dental arch of a patient were made with five different preimpression preparation procedures. Stone casts were made and analyzed. Critical comparison showed that the preimpression preparation influenced the quality of the occlusal surface of the cast. Fingerpainting the occlusal surface with fluid hydrocolloid before positioning the loaded impression tray, associated with use of a saliva ejector, reduced the incidence of macroscopic defects on the occlusal surface of the impressions.
Department of Prosthodontics, University of Ferrara, Italy.
R
R
Scotti
M
M
Lugli
A
A
D'Elia
D000328:Adult; D000464:Alginates; D000704:Analysis of Variance; D003761:Dental Impression Technique; D005260:Female; D006801:Humans; D003765:Models, Dental; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D013499:Surface Properties; D013501:Surface-Active Agents; D014906:Wetting Agents
D000464:Alginates; D013501:Surface-Active Agents; D014906:Wetting Agents