Effect of mouth-motion fatigue and thermal cycling on the marginal accuracy of partial coverage restorations made of various dental materials

Stappert, Christian F.J.; Chitmongkolsuk, Somsak; Silva, Nelson R.F.A.; Att, Wael; Strub, Jörg Rudolf

doi:10.1016/j.dental.2008.02.005

Cited by 47 publications

(65 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The recommended marginal gap for the clinical longevity of crown restorations is less than 120 µm 2,26) ; the results obtained in this study showed marginal gaps much smaller than 120 µm: 6 µm for the extraoral scanner and 9 µm for the intraoral scanner.…”

Section: Accuracy Of Digital Crownmentioning

confidence: 58%

The accuracy of the CAD system using intraoral and extraoral scanners for designing of fixed dental prostheses

Shimizu

Shinya

Kuroda

et al. 2017

Dental Materials Journal

View full text Add to dashboard Cite

The accuracy of prostheses affects clinical success and is, in turn, affected by the accuracy of the scanner and CAD programs. Thus, their accuracy is important. The first aim of this study was to evaluate the accuracy of an intraoral scanner with active triangulation (Cerec Omnicam), an intraoral scanner with a confocal laser (3Shape Trios), and an extraoral scanner with active triangulation (D810). The second aim of this study was to compare the accuracy of the digital crowns designed with two different scanner/CAD combinations. The accuracy of the intraoral scanners and extraoral scanner was clinically acceptable. Marginal and internal fit of the digital crowns fabricated using the intraoral scanner and CAD programs were inferior to those fabricated using the extraoral scanner and CAD programs.

show abstract

Section: Accuracy Of Digital Crownmentioning

confidence: 58%

The accuracy of the CAD system using intraoral and extraoral scanners for designing of fixed dental prostheses

Shimizu

Shinya

Kuroda

et al. 2017

Dental Materials Journal

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

“…Since ICRs are fabricated based on layering principles, adhesion between the incremental layers is important in order to overcome such delamination or chipping problems clinically [38]. When working with ICR materials, the general principle is to minimize shrinkage during polymerizing a bulk of material.…”

Section: Discussionmentioning

confidence: 99%

Effect of delay in layering on the incremental adhesion of indirect dental composite resins

Özcan¹,

Pekkan²

2012

International Journal of Adhesion and Adhesives

View full text Add to dashboard Cite

Effect of mouth-motion fatigue and thermal cycling on the marginal accuracy of partial coverage restorations made of various dental materials

Cited by 47 publications

References 43 publications

The accuracy of the CAD system using intraoral and extraoral scanners for designing of fixed dental prostheses

The accuracy of the CAD system using intraoral and extraoral scanners for designing of fixed dental prostheses

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

Effect of delay in layering on the incremental adhesion of indirect dental composite resins

Contact Info

Product

Resources

About