DOI:

10.37988/1811-153X_2020_1_86

Prevention of fractures of complete removable lamellar dentures with pronounced torus

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Authors

  • А.Ф. Петросян 1, prosthodontist
  • I.Yu. Lebedenko 2, 3, PhD in Medical Sciences, head of the Materials science Laboratory; full professor of the Prosthodontics department at the Medical institute
  • 1 Pushkin City Dental Polyclinic, 141207, Pushkino, Russia
  • 2 Central Research Institute of Dental and Maxillofacial Surgery, 119021, Moscow, Russia
  • 3 RUDN University, 117198, Moscow, Russia

Abstract

The work is devoted to the scientific justification of the prevention of fractures of the bases of complete removable plate prostheses with a pronounced torus of the upper jaw by calculating the minimum allowable thickness of the base in the isolation zone. The Flexural strength limit and Flexural modulus of 6 Russian base materials of different chemical nature were studied. A mathematical model was constructed and the stress-strain state of the prosthesis base was studied for different prosthesis thicknesses in the zone of maxillary torus isolation. It is shown that for acrylic and polyurethane bases, the minimum thickness of the base in the torus isolation zone should be at least 2.3 mm. Clinical observations for 2 years of 97 patients with complete prostheses made in accordance with the recommendations for the thickness of the base in the torus isolation zone confirmed the effectiveness of mathematical calculations.

Key words:

removable plate dentures, complete absence of teeth, torus of the upper jaw, basic materials, mathematical modeling of the stress-strain state of the removable denture basis

For Citation

[1]
Петросян А.Ф., Lebedenko I.Yu. Prevention of fractures of complete removable lamellar dentures with pronounced torus. Clinical Dentistry (Russia).  2020; 1 (93): 86—89. DOI: 10.37988/1811-153X_2020_1_86

References

  1. Abolmasov N.G., Abolmasov N.N., Bychkov V.A., Al-Hakim A. Orthopedic dentistry: a guide for doctors and students. — Moscow: Medpress-inform, 2002: 367 (In Russ.).
  2. Voronov I.A., Voronov A.P., Lebedenko I.Yu. Orthopedic treatment of patients with complete absence of teeth. — Moscow: Medpress-inform, 2006: 7—15 (In Russ.).
  3. Gonzalez J., Malave D., Holtzclaw D. Torus palatinus: a brief review of the literature and case report of removal. — Journal of Implant & Advanced Clinical Dentistry. — 2018; 1: 6—10.
  4. Cheng Y.Y., Li J.Y., Fok S.L., Cheung W.L., Chow T.W. 3D FEA of high-performance polyethylene fiber reinforced maxillary dentures. — Dent Mater. — 2010; 26 (9): e211—9.
  5. Zolochevsky A.A., Becker A. Introduction to ABAQUS. Methodological guide. — Kharkiv, 2011: 49 (In Russ.).
  6. Kopeikin V.N., Mirgazizov M.Z. (eds). Orthopaedic dentistry. — Moscow: Meditsina, 2001: 436 (In Russ.).
  7. Pozdnyakov S.N., Chuev V.V., Chuev V.P. Comparative characteristics of acrylic base plastics. — Russian dentistry. — 2016; 4: 1—2 (In Russ.).
  8. Alter Yu.M., Tkachuk A.-M.P., Poyurovskaya I.Ya., Sutugina T.F., Ogorodnikov M.Yu. Polyurethane denture base material «Pentalur» and modified polyurethane compositions: comparative study of mechanical properties. — Stomatology. — 2013; 1: 9—13 (In Russ.).
  9. Dubova L.V., Madzhidova E.R., Dzaurova M.A., Kitkina T.B., Lebedenko I.Yu. Immediate results of the use of removable dentures from the new domestic basic material “Nolatec”. — Russian dental journal. — 2016; 1: 16—9 (In Russ.).
  10. Gusev V.B. Development and implementation of domestic thermoplastics for dental use. — Dental technician. — 2016; 2: 68—9 (In Russ.).

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Published on

April 1, 2020