Impact of Magnets Inserted into Overdentures on the Periodontal Indices

ORIGINAL ARTICLE
Snežana V. Brković, Srđan D. Poštić, Veljko D. Ilić, Branimir D. Stošić, Pavle D. Ilić

 

For citation: Brković SV, Poštić SD, Ilić VD, Stošić BD, Ilić PD. Impact of Magnets Inserted into Overdentures on the Periodontal Indices. International Journal of Biomedicine. 2026;16(3):383-387. doi:10.21103/Article16(3)_OA9

Originally published September 5, 2026

Abstract: 

Background: Preserving teeth with compromised periodontal support when using tooth-supported removable dentures (overdentures—ODs) presents challenges related to periodontal tissue condition and denture retention.

The aim of the study was to assess the effects of inserting magnets into the OD base on periodontal tissue indices around abutment teeth (AT) beneath ODs.

Methods and Results: The 136 vital canines/premolars were included in the study. Experimental group (EG)  involved 48 partially edentulous patients with 96 ATʼs in lower jaw while upper had complete denture, assuming subgroups:  A) split mouth samples of 24 patients/24 teeth with magnets inserted in denture base around AT on one jaw side, while the contralateral side presented by 24 AT without magnets; B) 24 patients in whom magnets were placed around 48 AT on both sides of a mandibular OD. The control group comprised 20 individuals with healthy dental arches, each with one pair of canines/premolars (a total of 40 teeth). All patients were followed for one year, with the assessment of the plaque index (PI; Silness & Loe) and the gingival index (GI; Loe & Silness). Significant decrease of PI and GI values was noted in the EG subgroup B between the base time point [PI = 0.875 (0.4687-1.0312), GI =1.000 (0.359-1.578)] and 12 months recall (PI = 0.375 (0.2500-0.7500), GI = 0.750 (0.187-1.156)] (P < 0.01 in both cases).

Conclusion: The inserted magnets of OD significantly improved PI and GI values around experimental abutment teeth after 12 months.

Keywords: 
overdenture • magnet • plaque index • gingival index • long-term study
References: 
  1. Pawar RS, Raipure PE, Kulkarni RS, Tagore M, Ganesan R. Fabrication of custom overdenture attachments using indigenously made parallelometer: A technique. J Indian Prosthodont Soc. 2019;19(1):83-87. doi: 10.4103/jips.jips_282_18. PMID: 30745759; PMCID: PMC6340085.
  2. Mercouriadis-Howald A, Rollier N, Tada S, McKenna G, Igarashi K, Schimmel M. Loss of natural abutment teeth with cast copings retaining overdentures: a systematic review and meta-analysis. J Prosthodont Res. 2018; Oct;62(4):407-415. doi: 10.1016/j.jpor.2018.05.002. Epub 2018 Jun 8. PMID: 29891420.
  3. Ettinger RL, Qian F. Longitudinal Assessment of Denture Maintenance Needs in an Overdenture Population. J Prosthodont. 2019;28(1):22-29. doi: 10.1111/jopr.12735. Epub 2018 Jan 29. PMID: 29380448.
  4. Milić-Lemić A, Sredojević S, Radović K, Stamenković D, Miličić B, Popovac A, Stančić I. Retention force of overdenture retained with telescopic crowns – a comparison of polyether ether ketone and zirconia ceramic telescopic crowns. Srp Arh Celok Lek. 2020;148(7-8):410-16. DOI: https://doi.org/10.2298/SARH190923025M.
  5. Bertl K,  Tangl S, Rybaczek T, Berger B, Traindl-Prohazka M, Schuller-Götzburg P, Grossschmidt K. Prevalence and severity of periodontal disease in a historical Austrian population. J Periodontal Res. 2020;55(6):931-945. doi: 10.1111/jre.12785. Epub 2020 July 13. PMID: 32658361; PMCID: PMC7689777.
  6. Aldhohrah T, Mashrah MA, Wang Y. Effect of 2-implant mandibular overdenture with different attachments and loading protocols on peri-implant health and prosthetic complications: A systematic review and network meta-analysis. J Prosthet Dent. 2022;127(6):832-44. doi: 10.1016/j.prosdent.2020.12.016. Epub 2021 Feb 3. PMID: 33546861.
  7. Elawady D, Adam MA, Allam H, Mahmoud II, Alqutaibi AY, Shon AA. Single Implant-Retained Mandibular Overdentures: A Literature Review. Cureus. 2024,18;16(1):e52486. doi: 10.7759/cureus.52486. PMID: 38371006; PMCID: PMC10874113.
  8. Helmy MH, Alqutaibi AY, El-Ella AA, Shawky AF. Effect of implant loading protocols on failure and marginal bone loss with unsplinted two-implant-supported mandibular overdentures: systematic review and meta-analysis. Int J Oral Maxillofac Surg. 2018; 47:642–650.
  9. Yalamolu SSS, Bathala LR, Tammineedi S, Pragallapati SHLP, Vadlamudi C. Prosthetic journey of magnets: a review. J Med Life. 2023; Apr;16(4):501-506. doi: 10.25122/jml-2020-0012. PMID: 37305814; PMCID: PMC10251383.
  10. Ribeiro TP, Flores M, Madureira S, Zanotto F, Monteiro FJ, Laranjeira MS. Magnetic Bone Tissue Engineering: Reviewing the Effects of Magnetic Stimulation on Bone Regeneration and Angiogenesis. Pharmaceutics. 2023; Mar 23;15(4):1045. doi: 10.3390/pharmaceutics15041045. PMID: 37111531; PMCID: PMC10143200.
  11. Bambini F, Santarelli A, Putignano A, Procaccini M, Orsini G, Di Iorio D, et al. Use of supercharged cover screw as static magnetic field generator for bone healing, 2nd part: In vivo enhancement of bone regeneration in rabbits. J Biol Regul Homeost Agents. 2017;31(2):481-5. PMID: 28685556.
  12. Zhang J, Meng X, Ding C, Shang P. Effects of static magnetic fields on bone microstructure and mechanical properties in mice. Electromagn Biol Med. 2018;37(2):76-83. doi: 10.1080/15368378.2018.1458626. Epub 2018, PMID: 29617158.
  13. Marycz K, Kornicka K, Röcken M. Static Magnetic Field (SMF) as a Regulator of Stem Cell Fate - New perspectives in regenerative medicine arising from an underestimated tool. Stem Cell Rev Rep. 2018;14(6):785-92. doi: 10.1007/s12015-018-9847-4. PMID: 30225821.
  14. He Z, Selvamurugan N, Warshaw J, Partridge NC. Pulsed electromagnetic fields inhibit human osteoclast formation and gene expression via osteoblasts. Bone. 2018;106:194-203. doi: 10.1016/j.bone.2017.09.020. Epub 2017 Sep 28. PMID: 28965919.
  15. Mueller H.-P. Periodontology (2nd ed.). Thieme. (2015). Retrieved from https://www.perlego.com/book/917726/periodontology-the-essentials-pdf (Original work published 2015).
  16. Hardell L, Nilsson M, Koppel T, Carlberg M. Aspects on the International Commission on Non-Ionizing Radiation Protection (ICNIRP) 2020 Guidelines on Radiofrequency Radiation. Journ Cancer Sci Clinic Therapeutics 5 (2021): 250-285.
  17. Poštić SD, Vujasinović-Stupar N, Asotić M, Rakočević Z. Systemic non-malignant osteoporosis and reduction of edentulous alveolar ridges. Sanamed. 2014;9(1):13-23.
  18. Bi Y, Aldhohrah T, Mashrah MA, Su Y, Yang Z, Guo X, et al. Effects of attachment type and number of dental implants supporting mandibular overdenture on peri-implant health: A systematic review and network meta-analysis. J Prosthodont Res. 2022;30;66(3):357-73. doi: 10.2186/jpr.JPR_D_21_00073. Epub 2021 Sep 30. PMID: 34588403.
  19. Elawady D, Adam MA, Allam H, Mahmoud II, Alqutaibi AY, Shon AA. Single Implant-Retained Mandibular Overdentures: A Literature Review. Cureus. 2024, 18;16(1):e52486. doi: 10.7759/cureus.52486. PMID: 38371006; PMCID: PMC10874113.
  20. Brkovic S, Postic S, Ilic D. Influence of the magnetic field on microorganisms in the oral cavity. J Appl Oral Sci. 2015;23(2):179-86. doi: 10.1590/1678-775720140243. PMID: 26018310; PMCID: PMC4428463.
  21. Poštić SD, Milošević M, Maneski T, Mladenovic, Brkovic S, Trifkovic B. Optical stereometric analysis of an experimental partially-edentulous mandible. AIME. 2022;14(6). doi:10.1177/16878132221106648.
  22. Zhu F, Hou D, Zhou C, Chen Z, Cao Y, Ji L, Zou J, Xu Y. Precise extraction of impacted supernumerary tooth in the maxillary anterior region with a digital guide plate: A case report. Medicine (Baltimore). 2022 May 20;101(20):e29275. doi: 10.1097/MD.0000000000029275. PMID: 35608429; PMCID: PMC9276383.

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Received May 12, 2026.
Accepted June 26, 2026.
© 2026 The Author(s). International Journal of Biomedicine is published by IMRDC. This is an open access article under the CC BY-NC-ND 4.0 license.