Removable partial dentures: eliminating retainers in the anterior zone
DOI:
https://doi.org/10.17533/udea.rfo.v32n1a3Keywords:
Dental esthetics, Metallic elements, Retention, Prosthetic displacement, VisibilityAbstract
Introduction: one of the main factors for discomfort in users of removable partial prosthesis is the presence of visible retainers in the anterior zone. In Kennedy Class III arches, that is, exclusively dental loading channels (in which the functional forces reach their final receptor: the alveolar bone), anterior zone retainers may be eliminated by selecting an appropriate prosthetic insertion and removal axis, and mainly by carving guiding planes that should provide retention by mechanical rubbing. This is an in vitro experimental study aimed at proving the hypothesis that it is possible to obtain functional retention in a removable partial prosthesis of dental loading channel without using retainers in the anterior zone. Methods: 7 maxillary models with different types of toothless process were used. As a common characteristic, they all were classified as Kennedy Class III with partial denture arches. A Cr-Co metallic base was built for each model according to their clinical situation. Their design allowed them to be exposed to traction in a universal traction machine (Tinius Olsen H5K-S). Results: the proposed hypothesis was confirmed as expected. The traction force needed to displace the metallic bases with retainers in the anterior zone was 16.93 Newton in average. On the other hand, the metallic bases without retainers in the anterior zone showed an average of 12.84 N. The average values obtained for both groups are higher than those reported in the literature (4.903 N). Conclusions: in Class III removable partial dentures it is possible to use metallic bases with no retainers in the anterior zone.
Downloads
References
Bezzon O, Mattos M, Rivero R. Surveying removable partial dentures: the importance of guiding planes and path of insertion for stability. J Prosthet Dent. 1997; 78(4): 412- 18. DOI: https://doi.org/10.1016/s0022-3913(97)70051-9
Soo S, Leung T. Hidden clasps versus C clasps and I bars: A comparison of retention. J Prosthet Dent. 1996; 75(6): 622- 25. DOI: https://doi.org/10.1016/s0022-3913(96)90247-4
Sato Y. Clinical methods for adjusting retention force of cast clasps. J Prosthet Dent. 1999; 82(5): 557- 61. DOI: https://doi.org/10.1016/s0022-3913(99)70054-5
Santana Penín U, Mora MJ. An esthetically attractive twin- flex clasp for removable partial dentures. J Prosthet Dent. 1998; 80(3): 367- 70. DOI: https://doi.org/10.1016/s0022-3913(98)70142-8
De Rossi A, Albuquerque RF, Bezzon OL. Esthetic options for the fabrication of removable partial dentures: a clinical report. J Prosthet Dent. 2001; 86(5): 465- 7. DOI: https://doi.org/10.1067/mpr.2001.119678
Carreiro Ada F, Machado AL, Giampaolo ET, Santana IL, Vergani CE. Dual path: a concept to improve the esthetic replacement of missing anterior teeth with a removable partial denture. J of Prosthodontics. 2008; 17(7): 586- 90. DOI: https://doi.org/10.1111/j.1532-849X.2008.00332.x
Ali M, Waters NE, Nairn RI, West F, Sherriff M. A laboratory investigation of the role of guide planes in the retention of cast cobalt- chromium alloy partial denture frameworks. J Dent. 2001; 29(4): 291-9. DOI: https://doi.org/10.1016/s0300-5712(01)00016-1
Kim D, Park C, Yi Y, Cho L. Comparison of cast Ti- Ni alloy clasp retention with conventional removable partial denture clasps. J Prosthet Dent. 2004; 91(4): 374- 82. DOI: https://doi.org/10.1016/j.prosdent.2004.02.015
Aziz Mahmoud A, Wakabayashi N, Takahashi H. Prediction of permanent deformation in cast clasps for denture prostheses using a validated nonlinear finite element model. Dental Materials. 2007; 23(3): 317- 24. DOI: https://doi.org/10.1016/j.dental.2005.10.012
Rivera Cerdas A. Efecto de la preparación del esmalte, en la fuerza de adhesión de dientes con Fluorosis. Odovtos - International Journal of Dental Sciences. 2013; (15): 69-74.
Romo F, Contreras C. Medición in vitro de distintos tipos de retenedores. Rev. Soc. Prótesis Estomatológica. 1988; (4): 39- 43.
Sato Y, Hosokawa R. Proximal plate in conventional circumferential cast clasp retention. J Prosthet Dent. 2000; 83(3): 319- 22. DOI: https://doi.org/10.1016/s0022-3913(00)70135-1
Kippax AJ, Shore RC, Basker RM. Preparation of guide planes using a reciprocating handpiece. Br Dent J. 1996; 180: 216- 20. DOI: https://doi.org/10.1038/sj.bdj.4809030
Ahmad J, Sheriff C, Waters NE. The effect of reducing the number of clasps on removable partial denture retention. J Prosthet Dent. 1992; 68(6): 928- 33. DOI: https://doi.org/10.1016/0022-3913(92)90553-m
Ma PS, Brudvik JS. Managing the maxillary partially edentulous patient with extensive anterior tooth loss and advanced periodontal disease using a removable partial denture: a clinical report. J Prosthet Dent. 2008; 100(4): 259- 63. DOI: https://doi.org/10.1016/S0022-3913(08)60203-6
Ayuso-Montero R, Martori López E, Brufau de Barberá M, Ribera Uribe M. Prótesis removible en el paciente geriátrico. Av Odontoestomatol. 2015; 31(3): 191-201. DOI: http://dx.doi.org/10.4321/S0213-12852015000300009
Downloads
Additional Files
Published
How to Cite
Issue
Section
Categories
License
Copyright (c) 2020 Revista Facultad de Odontología Universidad de Antioquia
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Copyright Notice
Copyright comprises moral and patrimonial rights.
1. Moral rights: are born at the moment of the creation of the work, without the need to register it. They belong to the author in a personal and unrelinquishable manner; also, they are imprescriptible, unalienable and non negotiable. Moral rights are the right to paternity of the work, the right to integrity of the work, the right to maintain the work unedited or to publish it under a pseudonym or anonymously, the right to modify the work, the right to repent and, the right to be mentioned, in accordance with the definitions established in article 40 of Intellectual property bylaws of the Universidad (RECTORAL RESOLUTION 21231 of 2005).
2. Patrimonial rights: they consist of the capacity of financially dispose and benefit from the work trough any mean. Also, the patrimonial rights are relinquishable, attachable, prescriptive, temporary and transmissible, and they are caused with the publication or divulgation of the work. To the effect of publication of articles in the journal Revista de la Facultad de Odontología, it is understood that Universidad de Antioquia is the owner of the patrimonial rights of the contents of the publication.
The content of the publications is the exclusive responsibility of the authors. Neither the printing press, nor the editors, nor the Editorial Board will be responsible for the use of the information contained in the articles.
I, we, the author(s), and through me (us), the Entity for which I, am (are) working, hereby transfer in a total and definitive manner and without any limitation, to the Revista Facultad de Odontología Universidad de Antioquia, the patrimonial rights corresponding to the article presented for physical and digital publication. I also declare that neither this article, nor part of it has been published in another journal.
Open Access Policy
The articles published in our Journal are fully open access, as we consider that providing the public with free access to research contributes to a greater global exchange of knowledge.
Creative Commons License
The Journal offers its content to third parties without any kind of economic compensation or embargo on the articles. Articles are published under the terms of a Creative Commons license, known as Attribution – NonCommercial – Share Alike (BY-NC-SA), which permits use, distribution and reproduction in any medium, provided that the original work is properly cited and that the new productions are licensed under the same conditions.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
