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A study on the changes in attractive force of magnetic attachments for overdenture
PURPOSE: Although magnetic attachment is used frequently for overdenture, it is reported that attractive force can be decreased by abrasion and corrosion. The purpose of this study was to establish the clinical basis about considerations and long term prognosis of overdenture using magnetic attachme...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Korean Academy of Prosthodontics
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4769893/ https://www.ncbi.nlm.nih.gov/pubmed/26949482 http://dx.doi.org/10.4047/jap.2016.8.1.9 |
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author | Leem, Han-Wool Cho, In-Ho Lee, Jong-Hyuk Choi, Yu-Sung |
author_facet | Leem, Han-Wool Cho, In-Ho Lee, Jong-Hyuk Choi, Yu-Sung |
author_sort | Leem, Han-Wool |
collection | PubMed |
description | PURPOSE: Although magnetic attachment is used frequently for overdenture, it is reported that attractive force can be decreased by abrasion and corrosion. The purpose of this study was to establish the clinical basis about considerations and long term prognosis of overdenture using magnetic attachments by investigating the change in attractive force of magnetic attachment applied to the patients. MATERIALS AND METHODS: Among the patients treated with overdenture using magnetic attachments in Dankook University Dental Hospital, attractive force records of 61 magnetic attachments of 20 subjects who re-visited from July 2013 to June 2014 were analyzed. Dental magnet tester (Aichi Micro Intelligent Co., Aichi, Japan) was used for measurement. The magnetic attachments used in this study were Magfit IP-B Flat, Magfit DX400, Magfit DX600 and Magfit DX800 (Aichi Steel Co., Aichi, Japan) filled with Neodymium (NdFeB), a rare-earth magnet. RESULTS: Reduction ratio of attractive force had no significant correlation with conditional variables to which attachments were applied, and was higher when the maintenance period was longer (P<.05, r=.361). Reduction ratio of attractive force was significantly higher in the subject group in which attachments were used over 9 years than within 9 years (P<.05). Furthermore, 16.39% of total magnetic attachments showed detachment of keeper or assembly. CONCLUSION: Attractive force of magnetic attachment is maintained regardless of conditional variables and reduction ratio increased as the maintenance period became longer. Further study on adhesive material, attachment method and design improvement to prevent detachment of magnetic attachment is needed. |
format | Online Article Text |
id | pubmed-4769893 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | The Korean Academy of Prosthodontics |
record_format | MEDLINE/PubMed |
spelling | pubmed-47698932016-03-06 A study on the changes in attractive force of magnetic attachments for overdenture Leem, Han-Wool Cho, In-Ho Lee, Jong-Hyuk Choi, Yu-Sung J Adv Prosthodont Original Article PURPOSE: Although magnetic attachment is used frequently for overdenture, it is reported that attractive force can be decreased by abrasion and corrosion. The purpose of this study was to establish the clinical basis about considerations and long term prognosis of overdenture using magnetic attachments by investigating the change in attractive force of magnetic attachment applied to the patients. MATERIALS AND METHODS: Among the patients treated with overdenture using magnetic attachments in Dankook University Dental Hospital, attractive force records of 61 magnetic attachments of 20 subjects who re-visited from July 2013 to June 2014 were analyzed. Dental magnet tester (Aichi Micro Intelligent Co., Aichi, Japan) was used for measurement. The magnetic attachments used in this study were Magfit IP-B Flat, Magfit DX400, Magfit DX600 and Magfit DX800 (Aichi Steel Co., Aichi, Japan) filled with Neodymium (NdFeB), a rare-earth magnet. RESULTS: Reduction ratio of attractive force had no significant correlation with conditional variables to which attachments were applied, and was higher when the maintenance period was longer (P<.05, r=.361). Reduction ratio of attractive force was significantly higher in the subject group in which attachments were used over 9 years than within 9 years (P<.05). Furthermore, 16.39% of total magnetic attachments showed detachment of keeper or assembly. CONCLUSION: Attractive force of magnetic attachment is maintained regardless of conditional variables and reduction ratio increased as the maintenance period became longer. Further study on adhesive material, attachment method and design improvement to prevent detachment of magnetic attachment is needed. The Korean Academy of Prosthodontics 2016-02 2016-02-23 /pmc/articles/PMC4769893/ /pubmed/26949482 http://dx.doi.org/10.4047/jap.2016.8.1.9 Text en © 2016 The Korean Academy of Prosthodontics http://creativecommons.org/licenses/by-nc/3.0/ 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. |
spellingShingle | Original Article Leem, Han-Wool Cho, In-Ho Lee, Jong-Hyuk Choi, Yu-Sung A study on the changes in attractive force of magnetic attachments for overdenture |
title | A study on the changes in attractive force of magnetic attachments for overdenture |
title_full | A study on the changes in attractive force of magnetic attachments for overdenture |
title_fullStr | A study on the changes in attractive force of magnetic attachments for overdenture |
title_full_unstemmed | A study on the changes in attractive force of magnetic attachments for overdenture |
title_short | A study on the changes in attractive force of magnetic attachments for overdenture |
title_sort | study on the changes in attractive force of magnetic attachments for overdenture |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4769893/ https://www.ncbi.nlm.nih.gov/pubmed/26949482 http://dx.doi.org/10.4047/jap.2016.8.1.9 |
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