TODENTJ-25-03-2019_TODENTJ-10-522 1553506653 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 09 30 2016 10 1 Sergio Alexandre Gehrke Victor Lourenço Frugis Jamil Awad Shibli Maria Piedad Ramirez Fernandez José Eduardo Maté Sánchez de Val José Luis Calvo Girardo Silvio Taschieri Stefano Corbella Purpose: This study compared the influence of implant design (cylindrical and conical) in the load transfer on bone surrounding 13mm and 7mm length implants under simulated occlusal loading, using photoelastic analysis. Method: Dental implants of 4mm diameter were divided into four groups, which varied in length and design: Group 1- standard (13 mm) cylindrical implant; Group 2 - standard conical implant; Group 3 – short (7 mm) cylindrical implant, and Group 4 - short conical implant. After the inclusion of the implant models in a photoelastic resin, they were subjected to a static load of 100 N. The lengths of the fringes that were generated were measured in three portions since the implants body: crestal, central and apical portion, parallel to the implant long axis. Furthermore, the entire extension area of dissipation of force was measured. Data were analyzed by one-way ANOVA (α = 0.05). Results: Lower stress was observed at the crestal bone in groups 2 and 4, while the stress levels in groups 1 and 3 were higher with significant differences compared to the other groups (p<0.05). Conclusion: The total amount of stress transmitted to the bone was not affected by implant length under axial loading condition, but changed in relation to the implant design with respect to the concentration of the fringes, which corresponded to the load distribution, with even more dissipation by conical implants. 09 30 2016 522 530 TODENTJ-10-522 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2015-12-7 2016-08-07 2016-09-02 2016-09-30 https://creativecommons.org/licenses/by/4.0/legalcode 10.2174/1874210601610010522 1553506653 https://opendentistryjournal.com/VOLUME/10/PAGE/522/ https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-522/TODENTJ-10-522.xml J. 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