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Effect of abutment geometry on the microgap size in a taper connection
- Authors: Kirsanova V.V.1, Furtsev T.V.1, Lukin R.S.2
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Affiliations:
- Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University
- Siberian Federal University
- Issue: Vol 28, No 5 (2024)
- Pages: 443-451
- Section: Experimental and Theoretical Investigation
- Submitted: 22.05.2024
- Accepted: 01.08.2024
- Published: 24.11.2024
- URL: https://rjdentistry.com/1728-2802/article/view/632210
- DOI: https://doi.org/10.17816/dent632210
- ID: 632210
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Abstract
Background: For implant-supported restorations, clinicians use both original and non-original abutments, which are widely available in today’s dental market. The finite element analysis previously conducted by the authors revealed that the microgap size in a taper connection depends on the selected abutment and affects the state of the marginal bone surrounding the implant.
Aim: To determine the distinguishing factor between original and non-original abutments that has the greatest impact on the microgap size in a taper connection during masticatory force modeling.
Materials and methods: The study used Straumann Bone Level (BL), BioHorizons Tapered Internal, and NobelParallel Conical Connection (CC) implants and standard abutments, as well as non-original ADM Dental abutments. Before conducting a serial computational experiment, the geometric parameters of the samples were manually measured. In the first stage of the study, four main factors were identified: screw material, abutment material, screw geometry, and abutment geometry. The calculations were based on the authors’ earlier research findings and were performed using finite element modelling with the Mechanical module of the ANSYS Workbench software.
The NeoScan N80 microtomography system was used in the second stage of the study. Moreover, the microgap size and length of cone generatrixes between the components were measured to better understand the geometry of the samples. The results were processed using the DataViewer and CTVox (Bruker Micro-CT) software.
Results: The abutment geometry had the greatest impact on the microgap size of a taper connection in both the Straumann BL and BioHorizons Tapered Internal systems. In the NobelParallel CC system, the abutment screw geometry had a greater impact on the microgap size. The microtomography findings revealed a difference in the length of implant-abutment cone generatrixes for the Straumann BL (0.1 mm) and BioHorizons Tapered Internal (0.07 mm) systems, with no difference between the original and non-original abutment for NobelParallel CC implants. The cone generatrix of the screw is smaller with the original NobelParallel CC abutment compared to the non-original one. This is the only negative difference value (–0.34 mm), with the modulus significantly exceeding that of the difference between Straumann BL (0.2 mm) and BioHorizons Tapered Internal (0.2 mm).
Conclusion: The study revealed that selecting an original versus non-original abutment has a greater impact on the microgap size of a taper connection due to differences in abutment geometry, particularly the geometry of its fixing screw.
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About the authors
Viktoriya V. Kirsanova
Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University
Author for correspondence.
Email: vikt.kirs@yandex.ru
ORCID iD: 0009-0002-7248-5310
SPIN-code: 1987-4544
Russian Federation, Krasnoyarsk
Taras V. Furtsev
Professor V.F. Voino-Yasenetsky Krasnoyarsk State Medical University
Email: taras.furtsev@gmail.com
ORCID iD: 0000-0002-5300-9274
SPIN-code: 7108-0928
MD, Dr. Sci.(Medicine)
Russian Federation, KrasnoyarskRoman S. Lukin
Siberian Federal University
Email: rlukin@sfu-kras.ru
ORCID iD: 0000-0002-4789-2128
SPIN-code: 9585-3128
Russian Federation, Krasnoyarsk
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