PubMed ID (PMID): 18546764Pages 121-123, Language: EnglishTiossi, Rodrigo / Rodrigues, Renata Cristina Silveira / Mattos, Maria da Glória Chiarello de / Ribeiro, Ricardo FariaThis study compared the vertical misfit of 3-unit implant-supported nickel-chromium (Ni-Cr) and cobalt-chromium (Co-Cr) alloy and commercially pure titanium (cpTi) frameworks after casting as 1 piece, after sectioning and laser welding, and after simulated porcelain firings. The results on the tightened side showed no statistically significant differences. On the opposite side, statistically significant differences were found for Co-Cr alloy (118.64 µm [SD: 91.48] to 39.90 µm [SD: 27.13]) and cpTi (118.56 µm [51.35] to 27.87 µm [12.71]) when comparing 1-piece to laser-welded frameworks. With both sides tightened, only Co-Cr alloy showed statistically significant differences after laser welding. Ni-Cr alloy showed the lowest misfit values, though the differences were not statistically significantly different. Simulated porcelain firings revealed no significant differences.