作者: Anna Gabriella Camacho Presotto , Valentim Adelino Ricardo Barão , Cláudia Lopes Brilhante Bhering , Marcelo Ferraz Mesquita
DOI: 10.1016/J.PROSDENT.2019.01.019
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摘要: Abstract Statement of problem Selective laser melting (SLM) is a promising additive technology for clinical practice, but data on dimensional precision assessed by marginal fit combined with stress and strain investigations implant-supported fixed partial dentures (FPDs) are lacking. Purpose The purpose this in vitro study was to verify whether the SLM manufacturing provides better 3-unit FPD frameworks than subtractive soft metal block (SMB) milling standard casting technique. Material methods Thirty FPDs Co-Cr were made casting, SMB milling, (n=10). between framework implant abutment evaluated photoelastic (PH) gauge (SG) models. Stress in system measured quantitative PH SG analyses after prosthetic screw tightening. Data subjected Kruskal-Wallis test, Mann-Whitney U Spearman correlation test (α=.05). Results method affected (P Conclusions Three-unit using showed those obtained or methods.