Keywords
A-silicone materials
dual-layer bases
physical and mechanical properties
dental prosthesis with wrapping part
dual-layer bases
physical and mechanical properties
dental prosthesis with wrapping part
How to Cite
Fedotova, O. (2019). ASSESSMENT OF PHYSICOMECHANICAL AND CLINICAL AND TECHNOLOGICAL PROPERTIES A-SILICONE MATERIALS IN THE MANUFACTURE OF TWO-LAYER BASES REMOVABLE DENTURES. Experimental and Clinical Dentistry, 4(3), 34-39. https://doi.org/10.35339/ecd.4.3.34-39
Abstract
The purpose of our study was to study the physico-mechanical and clinical properties of A-silicone materials for the manufacture of two-layered structures for removable dentures with a wrapping part as a step towards improving the quality of treatment and life of patients with defects in the upper jaw. Materials and methods. A comparative assessment of the properties of A-silicon substrate materials was carried out jointly with the employees of the central factory laboratory of JSC «Stoma» (Kharkiv, Ukraine) in accordance with the requirements of the international ISO10139 certified PVC-S polyvinylsiloxane substrate materials of JSC Stoma, «PM-S extra» JSC Stoma, «PM-SN» of JSC Stoma, «Ufi Gel P» Voco, «Silagum» DMG and according to the standard methods provided by TU 724.600481318-027-2003. Conclusions. The comparative characteristic of the main properties, carried out by us, made it possible to reveal the following patterns: as a result of optimization of the structure of the material, the strength of the bond with the acrylic basis significantly and reliably (p <0,05) increased from (5,3±0,2) to (9.3±0.2) kgf/cm2, i.e. 75.5%; the relative elongation rates were significantly (p<0,05) increased from (32,2±0,8) to (41,9±0,7)%, which is 30,1%; the value of the consistency of the compound is also significantly (p<0,05) the prototype prevails by 44%, forming (23,2±0,1) and (33,4±0,9) mm respectively; the relative compression deformation increased (p>0,05) in comparison with the prototype by 6,6% (38,1±0,7) to (40,6±1,5)%; the total working time has increased from (63,8±0,89) to (76,3±0,8) s, hence by 13,3% (p>0,05), the time of mixing is optimized by 1,2%, vulcanization time by 2.6%; water absorption, compared with the prototype, decreased by 13.6% (p>0.05) – from (0.22±0.01) to (0.19±0.01)%, and the microporosity from (0.120±0.001) to (0.108±0.001) μm2, that is, 10%. Indicators of all properties of the studied materials meet the criteria ISO-10139. Summarizing the results, we can state that the improved domestic material «PM-SN» in only a few cases is inferior to its foreign counterparts and definitely has improved properties compared with the prototype «PM-S».References
1. Акуленко А.Л. Съемные протезы – качественно и просто / А.Л. Акуленко, С.В. Варнавский // Стоматологический вестник. – 2003. – No 4. – С. 17–18.
2. Аносова А.И. Использование эластичных пластмассовых прокладок в ортопедической стоматологии / А.И. Аносова, Н.Ф. Сарычева // Стоматология. – 2014. – No 4. – С. 56–57.
3. Артюшенко Ю.В. Замещение дефектов челюстно-лицевой области у онкологических больных / Ю.В. Артюшенко, Р.К. Гасымов // Здравоохранение Казахстана. – 2013. – No 12. – С. 39–40.
4. Appleby R.C. Immediate maxillary denture impression / R.C. Appleby, W.F. Kirchoff // J. Prosth Dent. – 2013. – No 5. – P. 443.
5. Bradm М. Use of polymeric material in dentistry / М. Bradm, В.Е. Canston // Flastm Polim. – 2014. – Vol. 41, No 153. – P. 140–144.
6. Donovan T.E. Physical properties of acrylic resin polymerized by four different techniques / T.E. Donovan, R.G. Hirst, W.V. Campagni // The Journal of Prosthetic Dentistry. – 2015. – Vol. 54, No 4. – P. 522–524.
2. Аносова А.И. Использование эластичных пластмассовых прокладок в ортопедической стоматологии / А.И. Аносова, Н.Ф. Сарычева // Стоматология. – 2014. – No 4. – С. 56–57.
3. Артюшенко Ю.В. Замещение дефектов челюстно-лицевой области у онкологических больных / Ю.В. Артюшенко, Р.К. Гасымов // Здравоохранение Казахстана. – 2013. – No 12. – С. 39–40.
4. Appleby R.C. Immediate maxillary denture impression / R.C. Appleby, W.F. Kirchoff // J. Prosth Dent. – 2013. – No 5. – P. 443.
5. Bradm М. Use of polymeric material in dentistry / М. Bradm, В.Е. Canston // Flastm Polim. – 2014. – Vol. 41, No 153. – P. 140–144.
6. Donovan T.E. Physical properties of acrylic resin polymerized by four different techniques / T.E. Donovan, R.G. Hirst, W.V. Campagni // The Journal of Prosthetic Dentistry. – 2015. – Vol. 54, No 4. – P. 522–524.