Comparative analysis of accuracy of how to use the implant torque controllers

Lee-Ra Cho; Chan-Jin Park; Yoon-Hyuk Huh; Ji-Hye Lee; Dae-Gon Kim

doi:10.4047/jkap.2013.51.4.300

Journal List > J Korean Acad Prosthodont > v.51(4) > 1034760

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Cho, Park, Huh, Lee, and Kim: Comparative analysis of accuracy of how to use the implant torque controllers

ORIGINAL ARTICLE

J Korean Acad Prosthodont 2013;51(4):300-306.

Published online: NaN October 2013

DOI: https://doi.org/10.4047/jkap.2013.51.4.300

Comparative analysis of accuracy of how to use the implant torque controllers

Lee-Ra Cho, MSD, DDS, PhD¹, Chan-Jin Park, MSD, DDS, PhD¹, Yoon-Hyuk Huh, DDS, MSD², Ji-Hye Lee, DDS, MSD³, Dae-Gon Kim, DDS, MSD^1,^∗

^¹Department of Prosthodontics, College of Dentistry, Gangneung-Wonju National University, Gangneung, Korea

^²Department of Prosthodontics, Sanbon Dental Hospital, Wonkwang University, Gunpo, Korea

^³Department of Dentistry, Uijeongbu St. Mary's Hospital, Catholic University of Korea, Uijeongbu, Korea

∗Corresponding Author: Dae-Gon Kim Department of Prosthodontics, College of Dentistry, Gangneung-Wonju National University, Jukheon-gil 7, Gangneung City, Gangwon-do, 210-702, Korea +82 33 640 2761: e-mail, muscleman@gwnu.ac.kr

Received 13 September 201326 September 2013 Accepted 4 October 2013

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

This study was to evaluate the accuracy of how to use the Mechanical Torque-Limiting Devices.

Materials and methods

Three different implant manufacturers (Dentium, Osstem, Shinhung) were prepared for each two implant torque controllers. Divided into two groups depending on the method used for removal torque was measured. Repeated measures of ANOVA test (α =.05) was used as statistics to evaluate the effect of repeated loading number on the removal torque. Independent t-test was used to evaluate the difference in removal torque of two groups.

Results

The removal torque significantly decreased as the number of loading repetition increased (P<.05). There was significant difference between two groups.

Conclusion

Loosen the handle part of the implant torque controllers spring resilience to recover one group compared to the group that did not, showed a little more closed to the reference value. (J Korean Acad Prosthodont 2013;51:300-6)

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Keywords: Mechanical Torque-Limiting Devices, Detorque, Spring

REFERENCES

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Fig. 1.

Mechanical Torque-Limiting Devices (MTLDs). From top to bottom, head, body, spring, handle. A: Dentium MTLD, B: Osstem MTLD, C: Shinhung MTLD.

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Fig. 2.

Group 1: Loosen the handle portion of MTLDs. A: Dentium MTLD, B: Osstem MTLD, C: Shinhung MTLD.

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Fig. 3.

Group 2: Tighten the handle portion of MTLDs. A: Dentium MTLD, B: Osstem MTLD, C: Shinhung MTLD.

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Fig. 4.

Implant fixture, abutment, abutment screw used for this study.

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Fig. 5.

Specimen preparation. Implant fixture to resin block is fixed. Then connect abutment and abutment screw.

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Fig. 6.

Removal torque value measuring set. This is composed of a digital torque gauge, a specimen loading apparatus, an aluminum framework, and specimen grip device.

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Fig. 7.

Comparison between Group 1 and Group 2 removal torque value. A: Dentium MTLD, B: Osstem MTLD, C: Shinhung MTLD.

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Table 1.

Test samples with the initial torque, removal torque of each groups

Group	Initial torque value (Ncm)	Group 1 removal torque value	Group 2 removal torque value	Independent t-test
Group	Initial torque value (Ncm)	Mean ± SD (Ncm)	Mean ± SD (Ncm)	P value
Dentium MTLD	30	28.5 ± 1.1	26.7 ± 0.8	P<.001
Osstem MTLD	30	30.1 ± 0.9	26.1 ± 0.5	P<.001
Shinhung MTLD	30	25.4 ± 0.6	24.3 ± 0.6	P<.001

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