TY - DATA T1 - Influence of implantoplasty on stress distribution of exposed implants at different bone insertion levels PY - 2017/12/13 AU - João Paulo Mendes TRIBST AU - Amanda Maria de Oliveira DAL PIVA AU - Jamil Awad SHIBLI AU - Alexandre Luiz Souto BORGES AU - Rubens Nisie TANGO UR - https://scielo.figshare.com/articles/dataset/Influence_of_implantoplasty_on_stress_distribution_of_exposed_implants_at_different_bone_insertion_levels/5695885 DO - 10.6084/m9.figshare.5695885.v1 L4 - https://ndownloader.figshare.com/files/9975568 L4 - https://ndownloader.figshare.com/files/9975598 L4 - https://ndownloader.figshare.com/files/9975604 L4 - https://ndownloader.figshare.com/files/9975610 L4 - https://ndownloader.figshare.com/files/9975628 L4 - https://ndownloader.figshare.com/files/9975637 KW - Finite Element Analyses KW - Dental Implants KW - Peri-Implantitis N2 - Abstract This study evaluated the effect of implantoplasty on different bone insertion levels of exposed implants. A model of the Bone Level Tapered implant (Straumann Institute, Waldenburg, Switzerland) was created through the Rhinoceros software (version 5.0 SR8, McNeel North America, Seattle, WA, USA). The abutment was fixed to the implant through a retention screw and a monolithic crown was modeled over a cementation line. Six models were created with increasing portions of the implant threads exposed: C1 (1 mm), C2 (2 mm), C3 (3 mm), C4 (4 mm), C5 (5 mm) and C6 (6 mm). The models were made in duplicates and one of each pair was used to simulate implantoplasty, by removing the threads (I1, I2, I3, I4, I5 and I6). The final geometry was exported in STEP format to ANSYS (ANSYS 15.0, ANSYS Inc., Houston, USA) and all materials were considered homogeneous, isotropic and linearly elastic. To assess distribution of stress forces, an axial load (300 N) was applied on the cusp. For the periodontal insert, the strains increased in the peri-implant region according to the size of the exposed portion and independent of the threads’ presence. The difference between groups with and without implantoplasty was less than 10%. Critical values were found when the inserted portion was smaller than the exposed portion. In the exposed implants, the stress generated on the implant and retention screw was higher in the models that received implantoplasty. For the bone tissue, exposure of the implant’s thread was a damaging factor, independent of implantoplasty. Implantoplasty treatment can be safely used to control peri-implantitis if at least half of the implant is still inserted in bone. ER -