COMPARATIVE CHARACTERISTICS OF ACETAL AND ELASTIC (NYLON) PARTIAL REMOVABLE DENTURES
DOI:
https://doi.org/10.35220/2523-420X/2025.4.19Keywords:
partial edentia, orthopedic treatment, removable dentures, acetal and elastic (nylon) partial removable denturesAbstract
Partial removable dentures remain the most widely used in the orthopedic treatment of partial edentia, especially in cases where the use of fixed structures is impossible or economically impractical. Current trends in prosthetic dentistry are aimed at finding alternatives to traditional acrylic and metal structures in order to improve aesthetics, biocompatibility, and patient comfort. The development of the use of thermoplastic polymers in dentistry has led to the active introduction of acetal and elastic (nylon) partial removable dentures, which differ in physical and mechanical properties and clinical indications. Thermoplastic materials exhibit different stiffness, elastic modulus, and resistance to deformation, which directly affects the stability and durability of orthopedic structures. He use of non-metallic clasps allows for significant improvement of aesthetic performance, especially in the frontal area, and reduces the risk of allergic reactions associated with metals. At the same time, literature data indicate the need for a differentiated approach to material selection, taking into account the clinical situation and functional load. The aim of the study. Analysis of modern approaches to the selection of prosthetic material in orthopedic treatment of partial edentia based on the study of scientific publications. Materials and methods. Publications from the Scopus, PubMed, and Google Scholar databases were processed using a combination of keywords: “orthopedic treatment,” “partial edentia,” “removable dentures,” “thermoplastic polymers”, “acetal and elastic (nylon) partial removable dentures”, “physical and mechanical properties of acetal and elastic (nylon) partial removable dentures”, “indications for the use of acetal and elastic (nylon) partial removable dentures”. The search criteria were the presence of keywords in journal publications, monographs, and standards up to and including 2025.
References
Zarb G. A., Hobkirk J., Eckert S., Jacob R. Prosthodontic treatment for edentulous patients (13th ed.). Mosby. 2013.
Donovan T. E., & Cho G. C. Esthetic considerations with removable partial dentures. Journal of the California Dental Association, 2003. № 31(7). рр. 551–557. https://doi.org/10.1080/19424396.2003.12224200
Takabayashi Y. Characteristics of denture thermoplastic resins for non-metal clasp dentures. Dental Materials Journal, 2010. № 29(4). рр. 353–361. https://doi. org/10.4012/dmj.2009-114
Lowe L. G. Flexible denture flanges for patients exhibiting undercut tuberosities and reduced width of the buccal vestibule: A clinical report. The Journal of Prosthetic Dentistry. 2004. № 92(2). рр. 128–131. https://
doi.org/10.1016/j.prosdent.2004.04.026
Kaplan P. Flexible removable partial dentures: Design and indications. Dentistry Today. 2008. № 27(12). рр. 118–123. https://www.dentistrytoday.com/sp-1734805387/
Fueki K., Ohkubo C., Yatabe M., Arakawa I., Arita M., Ino S., et al. Clinical application of removable partial dentures using thermoplastic resin–Part II: Material properties and clinical features of non-metal clasp dentures. Journal of Prosthodontic Research, 2014. № 58(2).
рр. 71–84. https://doi.org/10.1016/j.jpor.2013.10.003
Negrutiu M., Sinescu C., Romanu M., Pop D., & Lakatos S. Thermoplastic resins for flexible framework removable partial dentures. European Journal of Prosthodontics and Restorative Dentistry, 2005. № 13(3).
рр. 295–299.
McCabe J. F., & Walls A. W. G. Applied dental materials (9th ed.). Blackwell. 2008. 9. Anusavice K. J., Shen C., & Rawls H. R. Phillips’ science of dental materials (12th ed.). Elsevier. 2013.
International Organization for Standardization. Dentistry – Base polymers – Part 1: Denture base polymers (ISO 20795-1:2013). ISO. 2013.
Hamanaka I., Takahashi Y., Shimizu H. Mechanical properties of injection-molded thermoplastic denture base resins. Acta Odontologica Scandinavica. 2011. Vol. 69, No. 2. P. 75–79. DOI: https://doi.org/10.3109/00016357.2010.517557
Sasaki H., Hamanaka I., Takahashi Y., Kawaguchi T. Effect of reinforcement on the flexural properties of injection injectionmolded thermoplastic denture base resins. Journal of Prosthodontics. 2017. Vol. 26, No. 4. P. 302–308. DOI: https://doi.org/10.1111/jopr.12419
Beyli M. S., von Fraunhofer J. A. An analysis of causes of fracture of acrylic resin dentures. The Journal of Prosthetic Dentistry. 1981. Vol. 46, No. 3. P. 238–241. DOI: https://doi.org/10.1016/0022-3913(81)90206-7
Singh J. P., Dhiman R. K., Bedi R. P. S., Girish S. H. Flexible denture base material: A viable alternative to conventional acrylic denture base material. Contemporary Clinical Dentistry. 2011. Vol. 2, No. 4. P. 313–317. DOI:https://doi.org/10.4103/0976-237X.91795
Fueki K., Ohkubo C., Yatabe M., Arakawa I., Arita M., Ino S. et al. Clinical application of removable partial dentures using thermoplastic resin – Part I: definition and indication of non-metal clasp dentures. Journal of Prosthodontic Research. 2014. Vol. 58, No. 1. P. 3–10. DOI: https://doi.org/10.1016/j.jpor.2013.12.002
Wadachi J., Sato M., Igarashi Y. Evaluation of the rigidity of thermoplastic resin dentures. Dental Materials Journal. 2013. Vol. 32, No. 3. P. 508–511. DOI: https://doi.org/10.4012/dmj.2013-061
Shah V. R., Shah D. N., Chauhan C. J., Doshi P. J., Kumar A. Evaluation of flexural strength and color stability of different denture base materials including flexible material after using different denture cleansers. The Journal of Indian Prosthodontic Society. 2015. Vol. 15, No. 4. P. 367–373. DOI: https://doi.org/10.4103/0972-4052.164908
Polyzois G. L., Andreopoulos A. G., Lagouvardos P. E. Acrylic resin denture repair with adhesive resin and metal wires: effects on strength parameters. The Journal of Prosthetic Dentistry. 1996. Vol. 75, No. 4. P. 381–387.
Phoenix R. D., Mansueto M. A., Ackerman N. A., Jones R. E. Evaluation of mechanical and thermal properties of commonly used denture base resins. Journal of Prosthodontics. 2004. Vol. 13, No. 1. P. 17–27. DOI: https://doi.org/10.1111/j.1532-849X.2004.04002.x
Кривчук О.А. Клінічна оцінка ефективності застосування вдосконаленої методики виготовлення пластинкових базисів знімних протезів. Український стоматологічний альманах. 2019. № 3. С. 34–39. DOI:
https://doi.org/10.31718/2409-0255.3.2019.06
Кузь В.С., Тумакова О.Б., Кузь Г.М., Тесленко О.І., Єрис Л.Б. Виготовлення повних знімних пластинкових протезів з різних груп базисних матеріалів та їх порівняльна характеристика. Актуальні проблеми сучасної медицини: Вісник Української медичної стоматологічної академії. 2020. Т. 20, № 3. С. 55–59. DOI: https://doi.org/10.31718/2077-1096.20.3.55
Ceraulo S., Barbarisi A., Hu Z. H., Caccianiga G., Lauritano D., Carinci F. The use of the flexible thermoplastic nylon-based dental prostheses: a literature review.
Prosthesis. 2025. Vol. 7, No. 6. Art. 169. DOI: https://doi. org/10.3390/prosthesis7060169
