TY - JOUR AU - Messias, Aion Mangino AU - Silva, Stephania Caroline Rodolfo AU - Abi-Rached, Filipe de Oliveira AU - Souza, Raphael Freitas de AU - Reis, José Maurício dos Santos Nunes PY - 2019/11/18 Y2 - 2024/03/29 TI - Comparison of impression techniques and double pouring by dental cast’s accuracy: preliminary clinical-lab trial JF - Brazilian Journal of Oral Sciences JA - Braz. J. Oral Sci. VL - 18 IS - SE - Article DO - 10.20396/bjos.v18i0.8657273 UR - https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8657273 SP - e191692 AB - <p><strong>Aim:</strong> This study compared impression techniques and double pouring by means of cast’s accuracy. <strong>Methods:</strong> For each patient (n=10), impressions from right maxillary canine to first molar were made with acrylic resin trays and vinyl-polysiloxane using one single-step, and four two-steps techniques: relief with poly(vinyl chloride) film; tungsten-carbide bur/scalpel blade; small movements of the tray; non-relief. Total visible buccal surface area of crowns was measured three times using photographs from patients (<em>Baseline</em>) and casts. Mean area values (mm<sup>2</sup>) between <em>Baseline</em> and casts differences were analyzed by two-way repeated-measures ANOVA (α=.05; 1-β=85%). <strong>Results:</strong> No significant differences were observed for <em>Impression Techniques</em> (<em>P</em>=.525), <em>Double Pouring</em> (<em>P</em>=.281), and their interaction (<em>P</em>=.809). <strong>Conclusion:</strong> All impression techniques and double pouring produced casts with similar accuracy.</p> ER -