Coelho Goiato, Marcelo [UNESP]Pesqueira, Alves Aldiéris [UNESP]Santos, Daniela Micheline Dos [UNESP]Haddad, Marcela FiliéMoreno, Amália [UNESP]2015-12-072015-12-072014Journal Of Clinical And Diagnostic Research : Jcdr, v. 8, n. 9, p. 86-90, 2014.2249-782Xhttp://hdl.handle.net/11449/130982This study investigated the biomechanical behavior of screwed partial fixed prosthesis supported by implants with different diameters (2.5 mm; 3.3 mm and 3.75 mm) by using a photoelastic analysis. Six photoelastic models were fabricated in PL-2 resin as single crowns or splinted 3-unit piece. Models were positioned in a circular polariscope and 100-N axial and oblique (45 degrees) loads were applied in the occlusal surface of the crowns by using a universal testing machine (EMIC). The stresses were photographically recorded and qualitatively analyzed using a software (Adobe Photoshop). Under axial loading, the number of fringes was inversely proportional to the diameter of the implants in the single crown models. In the splinted 3-unit piece, the 3.75-mm implant promoted lower number of fringes regardless of loading area application. Under oblique loading, a slight increase of fringes number was observed for all groups. The standard implant diameter promoted better stress distribution than the narrow and mini diameter implants. Additionally, the splinted crowns showed a more uniform stress distribution.86-90engBiomechanicalDental implantationDental stress analysisArtigo10.7860/JCDR/2014/8489.4902Acesso restrito971988381487258225386531PMC42259830000-0002-3800-3050