Wear of composite resin veneering materials in a dual‐axis chewing simulator

Kern, Matthias; Strub, J. R.; Lu, Xueqiang

doi:10.1046/j.1365-2842.1999.00416.x

Cited by 190 publications

(154 citation statements)

References 25 publications

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“…1,6,8,9,22 Clinical studies are time consuming and in addition, it is often difficult to standardise the test parameters. 20 Therefore, long-term results regarding the marginal fit can be obtained by in vitro tests. The results obtained after 240,000 to 250,000 'masticatory' cycles in a chewing simulator corresponded to the results obtained after one year of clinical service.…”

Section: Discussionmentioning

confidence: 99%

“…Excess polymerised composite was removed with a scalpel and a fine finishing diamond. Then, half of the specimens of the three groups were artificially aged in a computer controlled dual axis chewing simulator (Willytec, Munich, D) 20 (Fig. 2).…”

Section: Discussionmentioning

confidence: 99%

“…To test for differences of marginal accuracy, the t-test was applied to the log-transformed marginal gap values. 20 about the microstructure of the hard tissue of teeth after preparation nor about the micro-and chemo-mechanical adaptation of the luting material to the dentin. The 90° angled shoulder preparation used has been recommended and tested by several authors with successful results.…”

Section: Discussionmentioning

confidence: 99%

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Marginal adaptation of three-unit fixed partial dentures constructed from pressed ceramic systems

et al. 2004

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Purpose This study compares the marginal accuracy of posterior metal ceramic (MC), all-ceramic IPS Empress®2 and experimental pressed ceramic (EPC-VP 1989/4) three-unit fixed partial dentures (FPD), before and after luting and after thermo-mechanical fatigue in a dual-axis chewing simulator. Materials and methods Caries-free human teeth (n=160) were used as abutments for the fabrication of eighty posterior three-unit FPD, divided into two test-groups, IPS Empress®2 and EPC, of 32 samples each and one control group of 16 samples metal ceramic FPD. All FPD were cemented with Variolink®II dual-curing resin cement. Half of the samples in each group were exposed to a dual-axis chewing simulator. Results The geometric mean marginal gap values (µm, before cementation, after cementation and after thermo-mechanical fatigue) amounted to 53, 63 and 62 for the ceramic metal FPD, 57, 71 and 68 for the Empress®2 FPD and 55, 67 and 68 for the EPC FPD. In all groups a statistically significant increase in marginal gap width was observed after cementation. The effect of functional loading in the chewing simulator on marginal gap was not significant. Marginal gap was lowest in the control group but differences with all-ceramic materials were small in all evaluation stages. Conclusion Within the limits of this investigation, it can be concluded that marginal gap values of these all-ceramic materials and conventional MC techniques are on a similar level. In particular, almost all marginal gap values observed in this study were within the limits of clinical acceptance.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Marginal adaptation of three-unit fixed partial dentures constructed from pressed ceramic systems

et al. 2004

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“…In recent years, there have been several in vitro [4][5][6] and in vivo studies 7,8 of the properties of these composites and promising results have been reported for crowns, 9 and for fixed partial dentures. 10 However, although these materials seem to provide excellent aesthetics, 11 some authors do not recommend composite materials for permanent restorations, 12,13 because of their unstable aesthetics, their increased wear 14 and their liability to plaque accumulation. 15 With the introduction of fiber reinforced composites, it seemed to be possible to eliminate these disadvantages of composites and to exploit their advantages, including the simple laboratory procedure, the lower costs and the possibility of repair.…”

Section: Introductionmentioning

confidence: 99%

Comparison of fiber-reinforced composite crowns and metal ceramic crowns according to attrition of opposing teeth

Hassan¹,

Aurangjeb²

2014

Update Dent. Coll. j

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Back ground: Fiber reinforcement was introduced to clinical dentistry for the first time in the 1960s when investigators attempted to reinforce polymethyl-methacrylate dentures with glass or carbon fibers. It has recently been shown that crowns, bridges and posts made of FRC can be used successfully in dental practice and they are esthetically more acceptable than conventional metal ceramic crown. Aims: A prospective comparative cross-sectional study was performed involving 60 patients who attended in the out patients department of Prosthodontics, Faculty of Dentistry, BSMMU during the period of

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“…Diante do seu rápido aperfeiçoamento, combinado com o uso dos sistemas adesivos, a resina composta hoje em dia é utilizada na maioria das restaurações estéticas diretas em dentes anteriores 3,8 , solucionando um número cada vez maior de situações clínicas de alterações de função, forma e estética [8][9][10] , sob um conceito de intervenção operatória minimamente invasiva 11 . Contudo, o profissional deve conhecer os limites do material para oferecer e optar pelo melhor tratamento diante desses casos de reabilitação.…”

Section: Introductionunclassified