Document Details Document Type : Article In Conference  Document Title : Resistance to Cyclic-Loading of 3-Units Sintered Fixed Partial Dentures Resistance to Cyclic-Loading of 3-Units Sintered Fixed Partial Dentures   Document Language : English  Abstract : 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.  Conference Name : International Association for Dental Research (IADR)  Duration : From : 29-1 AH - To : 29-1 AH   Publishing Year : 2006 AH 2006 AD  Article Type : Article  Added Date : Monday, May 5, 2008  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email ثامر مرغلاني MARGHALANI, Thamer Researcher Doctorate THMRGHALANI@Kau.edu.sa Files File Name Type Description  Resistance to Cyclic-Loading of 3-Units.pdf pdf   Back To Researches Page