Axial displacement of the suprastructures at the conical implant — abutment interface

BACKGROUND: The inconsistency of the congruence surface implantabutment interface leads to impaired communication implant shaft with oral cavity, breakdown structure, including implant, and changes in occlusal relationships because axial displacement.
 AIM: This study aimed investigate degree displacement abutments made relative implants analogs. Specific tasks were as follows: (1) make various for a conical connection obtained from MIS, (2) value each type load modeling, (3) examine analog tightening force screw.
 MATERIALS AND METHODS: Axial displacements tested using analogs MIS joints. Original non-original chosen suprastructures. original abutment was presented by CS-CPK62. Abutments C1 milling, laser sintering, casting according burned models. fastening block plaster 4th class. conducted simulation complex we have developed, which creates cyclic within 30 kg. divided into two stages. In first stage, on screw examined. attached forces: 7 Ncm (tightening simple screwdriver), 15 Ncm, Ncm. After tightening, vertical measurements micrometer. second under assessed. tightened recommended manufacturer, performed. Measurements both before after simulation.
 RESULTS: those milling showed greatest deviation (0.056 mm 0.066 mm, respectively), had deviations 0.047 mm. smallest found sintering (0.032 mm). values stage follows. when modeling (0.00167 each). Moreover, melting significant (0.007 0.004 respectively).
 CONCLUSIONS: A pattern revealed: smoother parts, stronger range 730 whereas an uneven gives displacement, fixation protocol provided resistance chewing loads milled abutments. use platform system create high-precision orthopedic structures has certain limitations error height restoration is created laboratory conditions. suprastructures accumulation errors. Thus, it necessary further evaluate systems other manufacturers improve accuracy restorations based dental implants.