Document Details
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Document Type |
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Article In Conference |
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Document Title |
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Resistance to Cyclic-Loading of 3-Units Sintered Fixed Partial Dentures Resistance to Cyclic-Loading of 3-Units Sintered Fixed Partial Dentures |
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Document Language |
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English |
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Abstract |
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Objectives:
This study compares the effect of cyclic loading on load to failure of
fixed partial dentures (FPD) fabricated with casting or sintered alloys.
Materials and Methods: Three unit FPDs were fabricated from two
sintered alloys, GroupA SinterKor (Pentron); GroupB. Captek (Precious
Chemicals) and one high noble cast alloy: GroupC. RxG (Pentron).
Plastic teeth (mandibular first premolar and first molar) set in a typodont
were prepared for a three unit FPD. This master model was duplicated
into multiple epoxy models. FPD frames (n= 10 per group) were
fabricated in uniform dimensions and veneered with porcelain. FPDs
were cemented to their respective models with zincphosphate cement. In
each group 4 FPDs were statically loaded to failure. The remaining FPDs
were cycle-loaded (100,000 eye. at 35% static failure load). FPDs
surviving 100,000 cycles were static loaded to failure.
Results: Mean static loads-to-failure (Newtons) were: GroupAl
753.03+105.54; GroupB: 965.83+39.26; GroupC: 543.85+163.4. The
failure load for GroupB was significantly higher than GroupC (Post Hoc
test, P=.005), but not different from GroupA (P=.112). GroupA was not
different from GroupC (P=.091). During cyclic loading, three GroupC
FPDs and One Group A FPD fractured, while all Group B FPDs
survived. Mean failure loads after cyclic loading were: GroupAl
701.98+122.6; GroupB: 937.08+163; GroupCl 581.83+120.85.
GroupB was significantly higher than GroupA (P=.014).
Conclusions: Sintered alloy FPDs (GroupB} exhibited significantly
higher resistance to static failure loads than cast alloy (GroupC} FPDs
(P=.005), but not different from the sintered alloy (GroupA) FPDs
(P=.112). After cyclic loading, GroupB recorded significantly higher
resistance to load compared with GroupC (P=.014), but not different from
GroupA (P=.082). In this study sintered alloy FPDs had higher or similar
resistant to loading compared to cast alloy FPDs. |
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Conference Name |
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International Association for Dental Research (IADR) |
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Duration |
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From : 29-1 AH - To : 29-1 AH
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Publishing Year |
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2006 AH
2006 AD |
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Article Type |
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Article |
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Added Date |
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Monday, May 5, 2008 |
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Researchers
| ثامر مرغلاني | MARGHALANI, Thamer | Researcher | Doctorate | THMRGHALANI@Kau.edu.sa |
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