International Journal of Prosthodontics and Restorative Dentistry

Register      Login

VOLUME 8 , ISSUE 2 ( April-June, 2018 ) > List of Articles

ORIGINAL ARTICLE

Change in Retention Force and Angulation Limit of an Attachment System with Silicone Soft Relining Material for Implant-retained Complete Dentures

Kaoru Sakurai, Takashi Koike, Koichiro Ogami, Takayuki Ueda, Keitaro Kubo, Tatsuyuki Kono

Keywords : Attachment, Laboratory research, Overdenture, Prosthodontics, Removable denture, Soft relining material.

Citation Information : Sakurai K, Koike T, Ogami K, Ueda T, Kubo K, Kono T. Change in Retention Force and Angulation Limit of an Attachment System with Silicone Soft Relining Material for Implant-retained Complete Dentures. Int J Prosthodont Restor Dent 2018; 8 (2):40-43.

DOI: 10.5005/jp-journals-10019-1202

License: CC BY-SA 4.0

Published Online: 01-12-2010

Copyright Statement:  Copyright © 2018; The Author(s).


Abstract

Aim: We investigated attenuation of the retention force on the female end (silicone soft relining material) with repeated mounting/ removal and determined the allowable angle between the male ends for mounting/removal. Materials and methods: Attachments consisting of metal ball anchors (diameter 2.5, 2.7, or 3.0 mm) for the male end and a silicone soft relining material for the female end were subjected to retention force measurement and allowable angle tests. The frequency of mounting/removal in 1 year was estimated assuming mounting/removal four times a day. The allowable angle test used two pairs of male ends with the between-male angle set at 0, 15, 30, or 45°, and the angle between the male ends joined with the female end was measured. The retention force at the initiation of the experiment and at each time-point was compared using one-way analysis of variance (ANOVA) followed by Dunnett's test (á = 0.05). Results: The retention forces of the male ends with a diameter of 2.5, 2.7, or 3.0 mm at the initiation of the experiment were 3.8 ± 0.3, 5.2 ± 0.2, and 5.5 ± 0.2 N respectively. After repeated mounting and removal corresponding to use for 1 year, a significant decrease in retention force was noted in all male ends (3.3 ± 0.1, 3.8 ± 0.2, and 4.3 ± 0.1 N respectively). It was also found that mounting/removal was possible up to a betweenmale- end angle of 45°. Conclusion: Under the conditions of this experiment, the retention force decreased with repeated mounting and removal of the female end prepared with silicone soft relining material. Additionally, a large between-male angle for mounting/removal was allowable, and mounting/removal was possible up to 45°. Clinical significance: This system may save time and expense and could be used to treat patients easily in their home or a nursing home.


PDF Share
  1. Koike T, Ueda T, Noda S, Ogami K, Patil P, Sakurai K. Development of new attachment system with soft lining material for implant-retained complete denture. Int J Prosthodont Restorative Dent 2013 Jan-Mar;3(1):21-24.
  2. Kubo K, Koike T, Ueda T, Sakurai K. Influence of the mechanical properties of resilient denture liners on the retention of overdenture attachments. J Prosthet Dent Forthcoming 2018 [Epub ahead of print].
  3. Kiat-amnuay S, Khan Z, Gettleman L. Overdenture retention of four resilient liners over an implant bar. J Prosthet Dent 1999 May;81(5):568-573.
  4. Fromentin O, Lassauzay C, Nader SA, Feine J, de Albuquerque RF Jr. Clinical wear of overdenture ball attachments after 1, 3 and 8 years. Clin Oral Implants Res 2011;22:1270-1274.
  5. Kimoto S, Kimoto K, Gunji A, Kawai Y, Murakami H, Tanaka K, Syu K, Aoki H, Toyoda M, Kobayashi K. Clinical effects of acrylic resilient denture liners applied to mandibular complete dentures on the alveolar ridge. J Oral Rehabil 2007 Nov;34(11):862-869.
  6. Grzegorz C, Jarosław Ż, Jacek K. Long-term soft denture lining materials. Materials 2014;7(8):5816-5842.
  7. Hensten-Pettersen A, Jacobsen N. Perceived side effects of biomaterials in prosthetic dentistry. J Prosthet Dent 1991 Jan;65(1):138-144.
  8. Kawashima I, Nishizaki H, Okazaki J. Generation of retentive force by electroformed telescope crowns. J Osaka Dent Univ 2009;43:19-28.
  9. Okayama S, Suzuki Y, Shimpo H, Ohkubo C. Fixation of magnet assembly to denture base using alternative resins. Dent Mater J 2015;34(3):364-370.
  10. Vural C, Ozdemir G, Kurtulmus H, Kumbuloglu O, Ozcan M. Comparative effects of two different artificial body fluids on Candida albicans adhesion to soft lining materials. Dent Mater J 2010;29(2):206-212.
  11. Hojo S, Ochiai Kent T, Toyoda M, Maruyama C, Ishida M, Matsuo E, Caputo Angelo A. The effect of removal angulation on the retention of ball attachments. Bull Kanagawa Dent Coll 2003;31:117-121.
  12. Umekawa Y, Kokubu M, Nagai E, Ohtani K, Fujimoto T, Katakura Y, Takamura M, Sakaguchi S, Ishigami T. Influence of keeper tilt angle on retentive force. JJ Mag Dent 2008;17: 98-100.
  13. International Organization for Standardization. ISO-22254-2005. Dentistry—Manual toothbrushes—Resistance of tufted portion to deflection [Internet]. Available from http://www. iso.org/iso/store.htm [accessed 22 Nov 2017].
  14. Ueda T, Kubo K, Saito T, Obata T, Wada T, Yanagisawa K, Sakurai K. Surface morphology of silicone soft relining material after mechanical and chemical cleaning. J Prosthodont Res Forthcoming 2018 [Epub ahead of print].
  15. Maryod WH, Ali SM, Shawky AF. Immediate versus early loading of mini-implants supporting mandibular overdentures: a preliminary 3-year clinical outcome report. Int J Prosthodont 2014 Nov-Dec;27(6):553-560.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.