About some causes of deformation of removable dentures
- Authors: Nasibullin G.G.1,2, Bulgakov E.X.1,2, Sviridov M.V.1,2, Amirkhanov M.T.1,2, Rakhmatullin P.M.1,2, Shestopalova T.N.1,2
-
Affiliations:
- Kazan Institute of Advanced Medical Training named after V. I. Lenin
- Kazan Institute of Civil Engineering
- Issue: Vol 65, No 3 (1984)
- Pages: 238-239
- Section: New methods of diagnosis and treatment
- URL: https://journals.rcsi.science/kazanmedj/article/view/89253
- DOI: https://doi.org/10.17816/kazmj89253
- ID: 89253
Cite item
Full Text
Abstract
In the process of manufacturing dentures made of acrylic plastics on plaster models and molds, their deformation during polymerization is often observed. It can be assumed that the plaster mold and counterform cannot withstand the pressure that occurs during the molding of plastic. This is what leads to a violation of the fit of the prostheses, an increase in bite and other complications. Semi-aqueous gypsum (CaSO4*0.5* H2O) is used in dental prosthetic equipment and in the dental prosthetics clinic During transportation, storage and packaging of semi-aqueous gypsum at high relative humidity, the content of adsorbed and chemically bound water increases sharply. In this regard, a significant part of gypsum is hydrated, and in the future its chemical activity decreases sharply. Practice has established that damp gypsum becomes unsuitable both for taking casts and for casting models and molds. Such gypsum does not completely harden for a long time. Models cast from damp plaster are fragile, "smeared". During their long-term storage, shrinkage deformations occur, noticeably changing the original dimensions of dentures
Keywords
Full Text
##article.viewOnOriginalSite##About the authors
G. G. Nasibullin
Kazan Institute of Advanced Medical Training named after V. I. Lenin; Kazan Institute of Civil Engineering
Author for correspondence.
Email: info@eco-vector.com
Department of Orthopedic Dentistry; Department of Building Materials
Russian Federation, Kazan; KazanE. X. Bulgakov
Kazan Institute of Advanced Medical Training named after V. I. Lenin; Kazan Institute of Civil Engineering
Email: info@eco-vector.com
Department of Orthopedic Dentistry; Department of Building Materials
Russian Federation, Kazan; KazanM. V. Sviridov
Kazan Institute of Advanced Medical Training named after V. I. Lenin; Kazan Institute of Civil Engineering
Email: info@eco-vector.com
Department of Orthopedic Dentistry; Department of Building Materials
Russian Federation, Kazan; KazanM. T. Amirkhanov
Kazan Institute of Advanced Medical Training named after V. I. Lenin; Kazan Institute of Civil Engineering
Email: info@eco-vector.com
Department of Orthopedic Dentistry; Department of Building Materials
Russian Federation, Kazan; KazanP. M. Rakhmatullin
Kazan Institute of Advanced Medical Training named after V. I. Lenin; Kazan Institute of Civil Engineering
Email: info@eco-vector.com
Department of Orthopedic Dentistry; Department of Building Materials
Russian Federation, Kazan; KazanT. N. Shestopalova
Kazan Institute of Advanced Medical Training named after V. I. Lenin; Kazan Institute of Civil Engineering
Email: info@eco-vector.com
Department of Orthopedic Dentistry; Department of Building Materials
Russian Federation, Kazan; KazanReferences
Supplementary files
