Abrasion of Human Enamel by Different Dental Ceramics in vitro

Seghi, Robert R.; Rosenstiel, Stephen F.; Bauer, Paul

doi:10.1177/00220345910700031301

Cited by 191 publications

(135 citation statements)

References 28 publications

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“…Loss of anatomic form caused by wear can alter functions of the masticatory system. Other investigators used wear machines to simulate the chewing movements in the oral environment [6,[23][24][25]. However, there is no evidence to show that in vitro wear testing can predict the amount or pattern of clinical wear of enamel caused by ceramic prostheses.…”

Section: Discussionmentioning

confidence: 99%

“…These shortcomings limit their use in dental applications where high chewing and clenching forces are involved. The fracture resistance of dental ceramics and the wear characteristics of some dental porcelain and ceramics for all-ceramic systems have been reported in several studies [2][3][4][5][6]. Most of these reports represent in vitro studies that used some clinically relevant parameters as the test variables.…”

Section: Introductionmentioning

confidence: 99%

“…The data from several wear tests indicate that ceramic prostheses cause more wear to opposing enamel than do dental alloys, even though the failure mechanisms responsible for excessive wear of enamel caused by ceramic prostheses have not been conclusively identified [4][5][6]. It is uncertain whether data obtained from the in vitro studies are clinically relevant [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramic crowns

et al. 2008

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Objectives-The objectives of this study were to characterize the clinical performance and wear characteristics of lithia-disilicate-based ceramic crowns.Methods-Thirty posterior crowns were made using the heat-pressing technique and lithiadisilicate-based core ceramic. Subjects were recalled annually. The quality of crowns and adjacent gingival tissues were examined using nine criteria for acceptability. All crowns were examined and ranked from 4 (Excellent) to 1 (Unacceptable) for each criterion. Impressions were made for replica models at each appointment. Wear characteristics of dental ceramic and enamel were obtained by comparing the surface of the original model with the follow-up model using a laser scanner.Results-Twenty nine subjects returned for the one-year recall examination. The maximum clenching force for the 30 subjects ranged from 125 to 815 N. All clinical criteria were ranked good to excellent at the one-year recall exam and no fractures were observed. The mean occlusal wear volumes for the ceramic crowns after one year were 0.19 (0.065) mm 3 for premolar sites and 0.34 (0.08) mm 3 for molar sites. The mean occlusal wear volumes of opposing enamel after one year were 0.21 (0.06) mm 3 for premolar teeth and 0.50 (0.22) mm 3 for molar teeth. The mean occlusal wear volume of ceramic molar crowns was significantly lower than the volume of enamel wear of the opposing teeth (p≤0.05).Conclusions-The quality of the overall prostheses and the gingival tissues were acceptable after one year. The mean occlusal wear volume of ceramic molar crowns was significantly lower than the enamel wear volume of the opposing teeth.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramic crowns

et al. 2008

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“…54 It is currently not clear if one type of ceramic is markedly less abrasive than the others, although the mica-glass, Dicor, the machinable glass Vita Mark II and the low fusing ceramics (eg Procera and Duceratin) have shown a trend in this direction. 55,56,57 The situation is complex however; chemicals in foodstuffs (eg cola drink) may affect some low fusing ceramics resulting in them becoming more abrasive and less resistant to wear. 58 Further research is needed before dentists can confidently prescribe ceramic occlusal surfaces with similar abrasivity to gold.…”

Section: Will the Restoration Abrade The Opposing Tooth?mentioning

confidence: 99%

Crowns and extra-coronal restorations: Materials selection

2002

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Materials selection is the second in the series on crowns and other extra-coronal restorations. Some of us are less than inspired by dental materials science. Nevertheless, many of the things that concern us clinically with crowns and their alternatives are based on material properties. We worry about the strength of the restoration, how well it fits and its aesthetics. We also worry about wear, occlusal control and biocompatibility. Not least of our concerns are dental laboratory charges, which inevitably have to be passed on to the patient.

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“…To date, few studies have been published on the wear of laboratory processed composite restorations resulting from multiple cycle loading against enamel. [8][9][10] Ideally, enamel wear caused by a restorative material should not increase physiological enamel wear 11 -about 20-40 µm per year 12 -otherwise, the occlusion may be destabilized and other problems could result. With the increasing development of new esthetic restorative materials, the use of cast gold alloy restorations has declined.…”

Section: Introductionmentioning

confidence: 99%

Esthetic Restorative Materials and Opposing Enamel Wear

Olivera¹,

Marques²

2008

Operative Dentistry

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The data obtained in this study can help practitioners with selection of the appropriate restorative materials to minimize further tooth and restoration wear, which is an important consideration during treatment planning. SUMMARYThis in vitro study compared the effects of a gold alloy (Degulor M), four dental ceramics (IPS Empress, IPS Empress 2, Duceram Plus, Duceram LFC) and a laboratory-processed composite (Targis) on the wear of human enamel. The amount of wear of the enamel (dental cusps) and restorative materials (disks) were tested in water at 37°C under standard load (20 N), with a chewing rate of 1.3 Hz and was determined after 150,000 and 300,000 cycles. Before the test, the average surface roughness of the restorative materials was analyzed using the Ra parameter. The results of this study indicate that Targis caused enamel wear similar to Degulor M and resulted in significantly less wear than all the ceramics tested. IPS Empress provoked the greatest amount of enamel wear and Degulor M caused less vertical dimension loss. Targis could be an appropriate alternative material to ceramic, because it is esthetic and produces opposing enamel wear comparable to gold alloy.

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Abrasion of Human Enamel by Different Dental Ceramics in vitro

Cited by 191 publications

References 28 publications

Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramic crowns

Clinical performance and wear characteristics of veneered lithia-disilicate-based ceramic crowns

Crowns and extra-coronal restorations: Materials selection

Esthetic Restorative Materials and Opposing Enamel Wear

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