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International Journal of Implant Dentistry

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Open Access 01-12-2020 | Research

Effects of implant thread design on primary stability—a comparison between single- and double-threaded implants in an artificial bone model

Authors: Yoko Yamaguchi, Makoto Shiota, Masaki Fujii, Masahiro Shimogishi, Motohiro Munakata

Published in: International Journal of Implant Dentistry | Issue 1/2020

Abstract

Background

Primary implant stability is essential for osseointegration. To increase stability without changing the implant size, the thread length must be extended by reducing pitch, using a double-threaded implant, or reducing pitch/lead and lead angle to half that of a single-threaded implant.

Materials and methods

We tested the stabilities of these configurations using artificial bone. A 1.2-mm pitch, single-threaded implant (12S) was the control. We tested a 0.6-mm pitch/1.2-mm-lead double-threaded implant (06D) and a 0.6-mm pitch/lead single-threaded implant (06S). We compared stabilities by measuring insertion torque, removal torque, and the implant stability quotient (ISQ). Damage to bone tissue caused by the implants was evaluated using microscopy and morphometric analysis.

Results

We show that 06D and 06S significantly improved stability compared with the 12S reference. The stability of 06S was significantly greater compared with that of 06D, except for ISQ. The three implants were associated with bone tissue damage characterized by debris and voids surrounding the implant/bone interface. The 06D caused the most tissue damage, followed by 06S and then 12S.

Conclusion

These findings indicate that primary stability was significantly improved by changing the implant size, extending the thread length with reduced pitch/lead, and reducing the lead angle to half that of a single-threaded implant compared with a double-threaded implant.

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Title: Effects of implant thread design on primary stability—a comparison between single- and double-threaded implants in an artificial bone model
Authors: Yoko Yamaguchi
Makoto Shiota
Masaki Fujii
Masahiro Shimogishi
Motohiro Munakata
Publication date: 01-12-2020
Publisher: Springer Berlin Heidelberg
Published in: International Journal of Implant Dentistry / Issue 1/2020
Electronic ISSN: 2198-4034
DOI: https://doi.org/10.1186/s40729-020-00239-1

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Effects of implant thread design on primary stability—a comparison between single- and double-threaded implants in an artificial bone model

Abstract

Background

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Materials and methods

Results

Conclusion

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