About clasp’s bearing capacity of thermoplastic removable partial dentures

1Grigorenko, Ya.M, 1Grigorenko, AYa., 2Nespryadko, VP, 1Tormahov, NN, 2Zakurko, SV
1S.P. Timoshenko Institute of Mechanics of the NAS of Ukraine, Kyiv
2O.O. Bogomolets National Medical University, Kyiv
Dopov. Nac. akad. nauk Ukr. 2015, 12:111-118
Section: Medicine
Language: Russian

The method of calculation of the bearing capacity of removable partial dentures, whose basis and clasps are made of thermoplastics, is proposed. The calculation includes the determination of the specific pressure of a clasp on the abutment, internal forces, and stresses in the weakest section of a clasp. The calculations allow one to select the optimal size of a clasp in order to create the necessary holding force of a prosthesis with its enough strength.

Keywords: abutment teeth, bearing capacity, clasp, internal forces, mechanical mathematical modeling stress, removable partial denture, thermoplastic materials
  1. Kopeykin V. N. Ortopedicheskaya stomatologia, Moscow: Medicina, 1998 (in Russian).
  2. Baranov A. B. Zubmoy technik, 2013, No 2: 53–56 (in Russian).
  3. Yunus N., Rashid A. A., Azmi L. L., Abu-Nassan. J. Oral Rehabilitation, 2005, 32: 65–71 https://doi.org/10.1111/j.1365-2842.2004.01370.x
  4. Suwannaroop P., Chaijareepont P., Koottathape N., Takahashi H., Arksornnukit M. Dental Materials J., 2011, 30(4): 461–468. https://doi.org/10.4012/dmj.2010-200
  5. Grigorenko Y. M., Grigorenko O. Y., Nespryadko V. P., Tyhonov D. A. Dopov. Nac. akad. nauk Ukr., 2013, No 1: 171–176 (in Russian).
  6. Grigorenko Y. M., Grigorenko O. Y., Tormahov N. N., Tril Y. A., Flis P. S. Dopov. Nac. akad. nauk Ukr., 2010, No 1: 188–194 (in Russian).
  7. Chuyko A. N., Shinchkovskiy I. A. Biomechanika v stomatologii, Kharhov: Fort, 2010 (in Russian).
  8. Pisarenko G. S., Yakovlev A. P., Matveev V. V. Spravochnik po soprativleniyu materialov, Kyiv, Nauk. Dumka, 1988 (in Russian).