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Fractures of clasp-retained partial dentures

Dragoslav Stamenković ; Department of Dental Prosthetics, University School of Dental Medicine, Belgrade

Puni tekst: engleski, pdf (10 MB) str. 189-198 preuzimanja: 262* citiraj
APA 6th Edition
Stamenković, D. (1983). Fractures of clasp-retained partial dentures. Acta stomatologica Croatica, 17 (3), 189-198. Preuzeto s https://hrcak.srce.hr/117033
MLA 8th Edition
Stamenković, Dragoslav. "Fractures of clasp-retained partial dentures." Acta stomatologica Croatica, vol. 17, br. 3, 1983, str. 189-198. https://hrcak.srce.hr/117033. Citirano 21.10.2021.
Chicago 17th Edition
Stamenković, Dragoslav. "Fractures of clasp-retained partial dentures." Acta stomatologica Croatica 17, br. 3 (1983): 189-198. https://hrcak.srce.hr/117033
Harvard
Stamenković, D. (1983). 'Fractures of clasp-retained partial dentures', Acta stomatologica Croatica, 17(3), str. 189-198. Preuzeto s: https://hrcak.srce.hr/117033 (Datum pristupa: 21.10.2021.)
Vancouver
Stamenković D. Fractures of clasp-retained partial dentures. Acta stomatologica Croatica [Internet]. 1983 [pristupljeno 21.10.2021.];17(3):189-198. Dostupno na: https://hrcak.srce.hr/117033
IEEE
D. Stamenković, "Fractures of clasp-retained partial dentures", Acta stomatologica Croatica, vol.17, br. 3, str. 189-198, 1983. [Online]. Dostupno na: https://hrcak.srce.hr/117033. [Citirano: 21.10.2021.]

Sažetak
Fractures of cast clasps are practically irreparable and impaire both therapeutic and prophylactic value of partial dentures. On purpose to explain causes of this rather frequently occuring damage, examination of fracture surface with optical and electronic microscopes and assessment of stress in the retainers were carried out. Microscopic examinationes comprised fracture surfaces of 30 cast clasps divided into 2 groups: Group I (control group): cast clasps formed and cast 'under controlled laboratory conditions; Group II (test group): fractured cast clasps. It was found that surfaces of cast clasp fractures had a complex structure containing developed dendrites and separated carbide phases. In contrast to the control group, fracture surface from the test group showed signs of alloy fatigue, increased porosity and presence of new phases. On base of the analysis of partial denture movement it was assessed that stress in cast clasps approached both proportionality and fatigue level. In the conclusion it is pointed to two main factors causing cast clasp fractures: plastic deformation and material porosity.

Ključne riječi
cast clasp; microstructure; assessment of stress

Hrčak ID: 117033

URI
https://hrcak.srce.hr/117033

[srpski]

Posjeta: 469 *