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Comparative study of axial displacement in digital and conventional implant prosthetic components

Axial displacement of prosthetic components is a major concern in implant dentistry, particularly during screw tightening. However, implant manufacturers provide different recommended torques for tightening implant prosthetic components, which can lead to errors in prosthesis fit before and after im...

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Published in:Scientific reports 2024-08, Vol.14 (1), p.19185-9
Main Authors: Back, Seungwon, Kim, Sunjai, Park, Jaehan, Pyo, Se-Wook, Chang, Jae-Seung
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description Axial displacement of prosthetic components is a major concern in implant dentistry, particularly during screw tightening. However, implant manufacturers provide different recommended torques for tightening implant prosthetic components, which can lead to errors in prosthesis fit before and after impression making. Implant–abutment connection angle or abutment geometries can affect axial displacement. This study aimed to compare the axial displacement between conventional and digital components based on the tightening torque and differences in the implant–abutment connection angles and geometries. The results showed that scan bodies with different implant-abutment connection geometries exhibited smaller axial displacement with increasing tightening torque than other prosthetic components. Except for the scan bodies, there was no difference in the axial displacement of prosthetic components when tightened with the same torque. However, regardless of the use of digital or conventional method of impression making, the axial displacement between the impression making component and the abutment when tightened to the recommended torques were significantly different. In addition, axial displacement was affected by the internal connection angle. The results of this study indicate that the tightening torque and geometry of prosthetic components should be considered to prevent possible misfits which can occur before and after impression making.
doi_str_mv 10.1038/s41598-024-69300-y
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subjects 692/700/3032/3155
692/700/3032/3155/3109
Axial displacement
Comparative studies
Computer-Aided Design
Dental Abutments
Dental Implant-Abutment Design - methods
Dental Implants
Dental Impression Technique
Dentistry
Digital impressions
Humanities and Social Sciences
Humans
Implant-abutment connection angle
multidisciplinary
Prostheses
Scan body
Science
Science (multidisciplinary)
Tightening torque
Torque
title Comparative study of axial displacement in digital and conventional implant prosthetic components
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