Influence of cyclic loading and luting agents on the fracture load of two all-ceramic crown systems

Attia, Ahmed; Kern, Matthias

doi:10.1016/j.prosdent.2004.09.002

Cited by 120 publications

(96 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The protocol for this study was a thermomechanical loading with 1.2 million cycles and an invariable occlusal load of 49±0.7 N. For the interpretation of the results found in this study, fatigue testing has to be considered. There are several studies reporting that fatigue loading weakens the ceramic structure 22,23) . The values found for fractural loading in this study thus may be lower than those found in studies without fatigue loading.…”

Section: Discussionmentioning

confidence: 99%

Influence of material thickness on fractural strength of CAD/CAM fabricated ceramic crowns

et al. 2017

View full text Add to dashboard Cite

The fracture behavior of CAD/CAM fabricated crowns was investigated as a function of material thickness for six silicate ceramic materials: Mark II, e.max CAD, Celtra Duo milled, Celtra Duo fired, Suprinity, Enamic. Crowns with thicknesses 0.5/1.0/1.5 mm were fabricated with CEREC and adhesively seated to dies fabricated with stereolithography technology (n=144). Thermomechanical loading and fractural loading was performed. Statistical analysis was done with one-way ANOVA and post-hoc Scheffé test. For 1.5 mm, all crowns survived fatigue testing, for 1.0 mm, survival was 100% only for materials e.max CAD and Suprinity. For 0.5 mm, best survival rate was 37.5% for Suprinity. Maximum fractural loading significantly varied among the groups. For 0.5 mm, highest value was found for Suprinity (660.1 N). Mark II showed lowest values for 1.0 mm (482.0 N), and 1.5 mm groups (634.8 N). e.max CAD showed highest values for 1.0 mm (774.2 N), and 1.5 mm groups (1,240.8 N).Keywords: Feldspathic ceramic VITA Mark II, Lithium disilicate ceramic e.max CAD, Zirconia-reinforced lithium silicate ceramic Celtra Duo and VITA Suprinity, Hybrid ceramic VITA Enamic, CERECColor figures can be viewed in the online issue, which is available at J-STAGE.

show abstract

Section: Discussionmentioning

confidence: 99%

Influence of material thickness on fractural strength of CAD/CAM fabricated ceramic crowns

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Therefore, biomechanical tests that simulate the oral environment by reproduction of the chewing forces, temperature and humidity of the oral cavity are important in evaluating the performance of new materials (8). Fatigue testing meets these requirements and is used for testing dental materials like composite resins and ceramics (9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21). The fatigue test simulates the clinical situation better than static compression test (11).…”

Section: Discussionmentioning

confidence: 99%

“…Literature reports have shown that materials that exhibit high initial resistance do not always have high resistance to fatigue (5,6). Therefore, it seems appropriate that the strength of teeth restored with dental materials should be measured using a dynamic mechanical test rather than static tests (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24).…”

Section: Introductionmentioning

confidence: 99%

In Vitro Fatigue Resistance of Teeth Restored With Bulk Fill versus Conventional Composite Resin

et al. 2016

View full text Add to dashboard Cite

The aim of this study was to compare the fatigue resistance of restored teeth with bulk fill composite resin, conventional composite resin with incremental insertion and unprepared sound teeth. Twenty-eight extracted maxillary premolars were selected and divided into 4 groups based on composite resin and insertion technique: control (C), conventional composite resin with incremental insertion (I) and bulk fill composite resin with three (BF3) or single increment (BF1). The restored specimens were submitted to fatigue resistance test with a 5 Hz frequency. An initial application of 5,000 sinusoidal load cycles with a minimum force of 50 N and a maximum force of 200 N was used. Next, were applied stages of 30,000 load cycles with the maximum force increasing gradually: 400, 600, 800, 1000, 1200 and 1400 N. The test was concluded when 185,000 load cycles were achieved or the specimen failed. The fatigue resistance data were recorded for comparison, using the Kaplan-Meier survival curve and analyzed by log-rank test at 0.05 significance. Fractures were classified based on the position of the failure - above or below the cementoenamel junction (CEJ). Statistical analysis of the Kaplan-Meier survival curve and log-rank test showed a significant difference between groups (p=0.001). The fracture analysis demonstrated that only 28.58% of failures were below the CEJ in group C, while for groups I, BF1 and BF3 they were 42.85%, 85.71% and 85.71%, respectively. Teeth restored with composite bulk fill in both techniques present similar fatigue resistance values compared with those restored with a conventional incremental insertion of composite, while the fatigue strength values of unprepared sound teeth were higher. Furthermore, unprepared sound teeth showed a lower percentage of fractures below the CEJ.

show abstract

“…In a bid to improve the fracture strength, studies on this issue have identified several factors that influence the fracture resistance of all-ceramic restorations, namely, type of ceramic material [2][3][4][5][6] , surface finish of all-ceramic restoration 2,[7][8][9][10][11][12][13][14][15][16] , cement thickness [17][18][19] , and type of luting agent 3,[20][21][22][23][24][25] . On the preferred surface treatment for ceramic restorations, glazing is generally advocated to improve their strength 2,12,13,26,27) and reduce their surface roughness 12,16,26,[28][29][30] .…”

Section: Introductionmentioning

confidence: 99%

Effect of overglazed and polished surface finishes on the compressive fracture strength of machinable ceramic materials

et al. 2010

View full text Add to dashboard Cite

Controversy prevails over the effect of overglazing on the fracture strength of ceramic materials. Therefore, the effects of different surface finishes on the compressive fracture strength of machinable ceramic materials were investigated in this study. Plates prepared from four commercial brands of ceramic materials were either surface-polished or overglazed (n=10 per ceramic material for each surface finish), and bonded to flat surfaces of human dentin using a resin cement. Loads at failure were determined and statistically analyzed using two-way ANOVA and Bonferroni test. Although no statistical differences in load value were detected between polished and overglazed groups (p>0.05), the fracture load of Vita Mark II was significantly lower than those of ProCAD and IPS Empress CAD, whereas that of IPS e.max CAD was significantly higher than the latter two ceramic materials (p<0.05). It was concluded that overglazed and polished surfaces produced similar compressive fracture strengths irrespective of the machinable ceramic material tested, and that fracture strength was material-dependent.

show abstract

Influence of cyclic loading and luting agents on the fracture load of two all-ceramic crown systems

Cited by 120 publications

References 10 publications

Influence of material thickness on fractural strength of CAD/CAM fabricated ceramic crowns

Influence of material thickness on fractural strength of CAD/CAM fabricated ceramic crowns

In Vitro Fatigue Resistance of Teeth Restored With Bulk Fill versus Conventional Composite Resin

Effect of overglazed and polished surface finishes on the compressive fracture strength of machinable ceramic materials

Contact Info

Product

Resources

About