101
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Arsecularatne J, Chung N, Hoffman M. An in vitro study of the wear behaviour of dental composites. BIOSURFACE AND BIOTRIBOLOGY 2016. [DOI: 10.1016/j.bsbt.2016.09.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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102
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Duarte S, Sartori N, Phark JH. Ceramic-Reinforced Polymers: CAD/CAM Hybrid Restorative Materials. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s40496-016-0102-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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103
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Amaya-Pajares SP, Ritter AV, Vera Resendiz C, Henson BR, Culp L, Donovan TE. Effect of Finishing and Polishing on the Surface Roughness of Four Ceramic Materials after Occlusal Adjustment. J ESTHET RESTOR DENT 2016; 28:382-396. [DOI: 10.1111/jerd.12222] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Silvia P. Amaya-Pajares
- Assistant Professor, Department of Restorative Dentistry, School of Dentistry; Oregon Health and Science University; Portland OR USA
| | - Andre V. Ritter
- Professor and Chair, Department of Operative Dentistry, School of Dentistry; University of North Carolina; Chapel Hill NC USA
| | - Carolina Vera Resendiz
- Assistant Professor, Department of Prosthodontics, School of Dentistry; University of North Carolina; Chapel Hill NC USA
| | - Brett R. Henson
- Graduate Student, Department of Endodontics, School of Dental Medicine; Tufts University; Boston MA USA
| | - Lee Culp
- Sculpture Studios; Morrisville NC USA
| | - Terence E. Donovan
- Professor and Section Head of Biomaterials, Department of Operative Dentistry, School of Dentistry; University of North Carolina; Chapel Hill NC USA
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104
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Homaei E, Farhangdoost K, Tsoi JKH, Matinlinna JP, Pow EHN. Static and fatigue mechanical behavior of three dental CAD/CAM ceramics. J Mech Behav Biomed Mater 2016; 59:304-313. [DOI: 10.1016/j.jmbbm.2016.01.023] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/19/2016] [Accepted: 01/25/2016] [Indexed: 10/22/2022]
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105
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Cengiz S, Sarac S, Özcan M. Effects of simulated gastric juice on color stability, surface roughness and microhardness of laboratory-processed composites. Dent Mater J 2016; 33:343-8. [PMID: 24882109 DOI: 10.4012/dmj.2013-265] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Medical problems such as gastroesophageal reflux disease can cause considerable damage to restorations in the oral environment. This study evaluated the effects of gastric juice on the surface characteristics of different types of laboratory-processed indirect composites with different filler particles and polymerization modes. Specimens were prepared from Tescera (TES; Bisco), Sinfony (SIN; 3M ESPE), Solidex (SOL; Shofu), and Adoro (AD; Ivoclar Vivadent). Before exposing the specimens to simulated gastric juice for 24 h, color, surface roughness, and microhardness were measured on one half of the polished flat surface of each specimen. After exposure to the simulated gastric juice, the same tests were repeated on the other half of specimen surface. Results indicated that gastric juice had a significant impact on color change (p<0.001). AD showed the largest surface roughness change among the resins (p<0.001). Gastric juice also significantly affected the microhardness of the materials, and AD and TES showed statistically similar change in microhardness (p>0.05).
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Affiliation(s)
- Seda Cengiz
- Department of Prosthodontics, Faculty of Dentistry, Bülent Ecevit University
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106
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Nakashima J, Taira Y, Sawase T. In vitro wear of four ceramic materials and human enamel on enamel antagonist. Eur J Oral Sci 2016; 124:295-300. [DOI: 10.1111/eos.12272] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2016] [Indexed: 11/26/2022]
Affiliation(s)
- Jun Nakashima
- Department of Applied Prosthodontics; Graduate School of Biomedical Sciences; Nagasaki University; Nagasaki Japan
| | - Yohsuke Taira
- Department of Applied Prosthodontics; Graduate School of Biomedical Sciences; Nagasaki University; Nagasaki Japan
| | - Takashi Sawase
- Department of Applied Prosthodontics; Graduate School of Biomedical Sciences; Nagasaki University; Nagasaki Japan
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107
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Wear properties of dental ceramics and porcelains compared with human enamel. J Prosthet Dent 2016; 115:350-5. [DOI: 10.1016/j.prosdent.2015.09.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 09/29/2015] [Accepted: 09/30/2015] [Indexed: 11/18/2022]
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108
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Choi JW, Bae IH, Noh TH, Ju SW, Lee TK, Ahn JS, Jeong TS, Huh JB. Wear of primary teeth caused by opposed all-ceramic or stainless steel crowns. J Adv Prosthodont 2016; 8:43-52. [PMID: 26949487 PMCID: PMC4769889 DOI: 10.4047/jap.2016.8.1.43] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 11/18/2015] [Accepted: 12/14/2015] [Indexed: 11/23/2022] Open
Abstract
PURPOSE This study was conducted to evaluate the effects of full-coverage all-ceramic zirconia, lithium disilicate glass-ceramic, leucite glass-ceramic, or stainless steel crowns on antagonistic primary tooth wear. MATERIALS AND METHODS There were four study groups: the stainless steel (Steel) group, the leucite glass-ceramic (Leucite) group, the lithium disilicate glass-ceramic (Lithium) group, and the monolithic zirconia (Zirconia) group. Ten flat crown specimens were prepared per group; opposing teeth were prepared using primary canines. A wear test was conducted over 100,000 chewing cycles using a dual-axis chewing simulator and a 50 N masticating force, and wear losses of antagonistic teeth and restorative materials were calculated using a three-dimensional profiling system and an electronic scale, respectively. Statistical significance was determined using One-way ANOVA and Tukey's test (P<.05). RESULTS The Leucite group (2.670±1.471 mm3) showed the greatest amount of antagonist tooth wear, followed by in decreasing order by the Lithium (2.042±0.696 mm3), Zirconia (1.426±0.477 mm3), and Steel groups (0.397±0.192 mm3). Mean volume losses in the Leucite and Lithium groups were significantly greater than in the Steel group (P<.05). No significant difference was observed between mean volume losses in the Zirconia and Steel groups (P>.05). CONCLUSION Leucite glass-ceramic and lithium disilicate glass-ceramic cause more primary tooth wear than stainless steel or zirconia.
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Affiliation(s)
- Jae-Won Choi
- Department of Prosthodontics, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Ik-Hyun Bae
- Woorimi Dental Clinic, Busan, Republic of Korea.; Department of Pediatric Dentistry, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Tae-Hwan Noh
- Department of Pediatric Dentistry, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Sung-Won Ju
- Dental Research Institute and Department of Biomaterials Science, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | | | - Jin-Soo Ahn
- Dental Research Institute and Department of Biomaterials Science, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Tae-Sung Jeong
- Department of Pediatric Dentistry, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
| | - Jung-Bo Huh
- Department of Prosthodontics, Dental Research Institute, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
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109
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Effect of different dental ceramic systems on the wear of human enamel: An in vitro study. J Prosthet Dent 2016; 115:230-7. [DOI: 10.1016/j.prosdent.2015.09.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 09/16/2015] [Accepted: 09/17/2015] [Indexed: 11/21/2022]
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110
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Mitov G, Anastassova-Yoshida Y, Nothdurft FP, von See C, Pospiech P. Influence of the preparation design and artificial aging on the fracture resistance of monolithic zirconia crowns. J Adv Prosthodont 2016; 8:30-6. [PMID: 26949485 PMCID: PMC4769887 DOI: 10.4047/jap.2016.8.1.30] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 11/23/2015] [Accepted: 11/30/2015] [Indexed: 02/01/2023] Open
Abstract
PURPOSE The aim of this study was to evaluate the fracture resistance and fracture behavior of monolithic zirconia crowns in accordance with the preparation design and aging simulation method. MATERIALS AND METHODS An upper first molar was prepared sequentially with three different preparation designs: shoulderless preparation, 0.4 mm chamfer and 0.8 mm chamfer preparation. For each preparation design, 30 monolithic zirconia crowns were fabricated. After cementation on Cr-Co alloy dies, the following artificial aging procedures were performed: (1) thermal cycling and mechanical loading (TCML): 5000 cycles of thermal cycling 5℃-55℃ and chewing simulation (1,200,000 cycles, 50 N); (2) Low Temperature Degradation simulation (LTD): autoclave treatment at 137℃, 2 bar for 3 hours and chewing simulation; and (3) no pre-treatment (control group). After artificial aging, the crowns were loaded until fracture. RESULTS The mean values of fracture resistance varied between 3414 N (LTD; 0.8 mm chamfer preparation) and 5712 N (control group; shoulderless preparation). Two-way ANOVA analysis showed a significantly higher fracture loads for the shoulderless preparation, whereas no difference was found between the chamfer preparations. In contrast to TCML, after LTD simulation the fracture strength of monolithic zirconia crowns decreased significantly. CONCLUSION The monolithic crowns tested in this study showed generally high fracture load values. Preparation design and LTD simulation had a significant influence on the fracture strength of monolithic zirconia crowns.
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Affiliation(s)
- Gergo Mitov
- Danube Private University, Department for Posthetic Dentistry, Krems, Austria
| | | | | | - Constantin von See
- Danube Private University, Center for CAD/CAM and Digital Technologies, Krems, Austria
| | - Peter Pospiech
- Charité-Universitätsmedizin Berlin, Department of Prosthodontics, Berlin, Germany
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111
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LUO H, TANG X, DONG Z, TANG H, NAKAMURA T, YATANI H. The influences of accelerated aging on mechanical properties of veneering ceramics used for zirconia restorations. Dent Mater J 2016; 35:187-93. [DOI: 10.4012/dmj.2015-115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Huinan LUO
- Department of Stomatology, Jinling Hospital, Nanjing University School of Medicine
| | - Xuehua TANG
- Department of Stomatology, The First Affiliated Hospital of Nanjing Medical University
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Zhen DONG
- Department of Stomatology, Jinling Hospital, Nanjing University School of Medicine
| | - Hui TANG
- Institute of Stomatology, Nanjing Medical University
| | - Takashi NAKAMURA
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
| | - Hirofumi YATANI
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry
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112
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Saiki O, Koizumi H, Akazawa N, Kodaira A, Okamura K, Matsumura H. Wear characteristics of polished and glazed lithium disilicate ceramics opposed to three ceramic materials. J Oral Sci 2016; 58:117-23. [DOI: 10.2334/josnusd.58.117] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Osamu Saiki
- Department of Fixed Prosthodontics, Nihon University School of Dentistry
| | - Hiroyasu Koizumi
- Department of Fixed Prosthodontics, Nihon University School of Dentistry
- Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | - Nobutaka Akazawa
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Akihisa Kodaira
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Kentaro Okamura
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Hideo Matsumura
- Department of Fixed Prosthodontics, Nihon University School of Dentistry
- Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
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113
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Daou EE. Esthetic Prosthetic Restorations: Reliability and Effects on Antagonist Dentition. Open Dent J 2015; 9:473-81. [PMID: 26962376 PMCID: PMC4768664 DOI: 10.2174/1874210601509010473] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 09/10/2015] [Accepted: 09/29/2015] [Indexed: 12/21/2022] Open
Abstract
Recent advances in ceramics have greatly improved the functional and esthetic properties of restorative materials. New materials offer an esthetic and functional oral rehabilitation, however their impact on opposing teeth is not welldocumented. Peer-reviewed articles published till December 2014 were identified through Pubmed (Medline and Elsevier). Scientifically, there are several methods of measuring the wear process of natural dentition which enhances the comparison of the complicated results. This paper presents an overview of the newly used prosthetic materials and their implication on antagonist teeth or prostheses, especially emphasizing the behavior of zirconia restorations.
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Affiliation(s)
- Elie E Daou
- Department of Prosthodontics, School of Dentistry, Lebanese University, Beirut, Lebanon
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114
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Choi JE, Waddell JN, Lyons KM, Kieser JA. Intraoral pH and temperature during sleep with and without mouth breathing. J Oral Rehabil 2015; 43:356-63. [PMID: 26666708 DOI: 10.1111/joor.12372] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2015] [Indexed: 01/20/2023]
Abstract
To measure and compare the intraoral pH and temperature of individuals during sleep with and without mouth breathing. Ten healthy participants [mean age = 25·8 (± 4·3)] wore a custom-made appliance fitted with a pH probe and thermocouple for two sets of 48 h. Continuous pH and temperature measurements were taken from the palatal aspect of the upper central incisors. To simulate mouth breathing during sleep, participants wore a nose clip for two nights of the four, with the first group (n = 5) wearing the nose clip during the first night and the rest (n = 5) wearing the nose clip during the second night of sleep to balance any potential bias from the wearing sequence. Both qualitative and quantitative analyses were conducted. The mean intraoral pH during daytime was 7·3 (± 0·4) and during sleep was 7·0 (± 0·5). The mean intraoral pH during sleep with mouth breathing was 6·6 (± 0·5), which was statistically significant compared with the normal sleep condition (P < 0·01). The intraoral pH decreased slowly over the hours of sleep in all participants. When sleeping with forced mouth breathing, intraoral pH showed a greater fall over a longer period of time. The mean intraoral temperature was 33·1 °C (± 5·2) during daytime and 33·3 °C (± 6·1) during sleep, with no statistical significance between sleep with and without mouth breathing (P > 0·05). The results suggest that mouth breathing during sleep is related to a decrease in intraoral pH compared with normal breathing during sleep, and this has been proposed as a causal factor for dental erosion and caries.
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Affiliation(s)
- J E Choi
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - J N Waddell
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - K M Lyons
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - J A Kieser
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
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115
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Goo CL, Yap A, Tan K, Fawzy AS. Effect of Polishing Systems on Surface Roughness and Topography of Monolithic Zirconia. Oper Dent 2015; 41:417-23. [PMID: 26666390 DOI: 10.2341/15-064-l] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study evaluated the effect of different chairside polishing systems on the surface roughness and topography of monolithic zirconia. Thirty-five monolithic zirconia specimens (Lava PLUS, 3M ESPE) were fabricated and divided into five groups of seven and polished with the following: Group 1 (WZ)-Dura white stone followed by Shofu zirconia polishing kit; Group 2 (SZ)-Shofu zirconia polishing kit; Group 3 (CE)-Ceramiste porcelain polishers; Group 4 (CM)-Ceramaster porcelain polishers; and Group 5 (KZ)-Komet ZR zirconia polishers. All specimens were ground with a fine-grit diamond bur prior to polishing procedures to simulate clinical finishing. Baseline and post-polishing profilometric readings were recorded and delta Ra values (difference in mean surface roughness before and after polishing) were computed and analyzed using one-way analysis of variance and Scheffe post hoc test (p<0.05). Representative scanning electron microscopy (SEM) images of the ground but unpolished and polished specimens were acquired. Delta Ra values ranged from 0.146 for CE to 0.400 for KZ. Delta Ra values for KZ, WZ, and SZ were significantly greater than for CE. Significant differences in delta Ra values were also observed between KZ and CM. The SEM images obtained were consistent with the profilometric findings. Diamond-impregnated polishing systems were more effective than silica carbide-impregnated ones in reducing the surface roughness of ground monolithic zirconia.
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116
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Cardelli P, Manobianco FP, Serafini N, Murmura G, Beuer F. Full-Arch, Implant-Supported Monolithic Zirconia Rehabilitations: Pilot Clinical Evaluation of Wear Against Natural or Composite Teeth. J Prosthodont 2015; 25:629-633. [PMID: 26436677 DOI: 10.1111/jopr.12374] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2015] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To clinically evaluate the amount of contact wear generated between full-arch monolithic zirconia implant-supported restorations and natural or composite antagonists, over a 1-year period. MATERIALS AND METHODS Forty-seven teeth from clinically functional, full-arch monolithic zirconia screw-retained implant prostheses (FDPs) and their antagonists were investigated. The first group ("Zirconia-E") was opposed to natural teeth ("Enamel"), whereas the other one ("Zirconia-CR") was opposed to nano-hybrid composite teeth ("Composite Resin"). Replicas of the restorations and their antagonists were obtained immediately after delivery (T0 ) and after 1 year of clinical service (T1 ). Each tooth surface was individually evaluated three-dimensionally by software to quantify the vertical distance between the two scans (Hausdorff distance), which was considered as contact wear. Data obtained for each arch were subjected to one-way ANOVA test and a post hoc analysis (Tukey's test) at a 5% level of significance. Furthermore, the influence of the location of the teeth (anterior or posterior) was analyzed. Minimum post hoc statistical power between statistically different groups was 99.6%. RESULTS Mean values were 63 ± 23 μm for Zirconia-E, 76 ± 29 μm for enamel, 70 ± 38 μm for composite resin; Zirconia-CR had a mean value of 19 ± 4 μm and significantly differed from the other groups. Contact wear between anterior and posterior teeth differed significantly only in the composite resin arch, with a mean of 39 ± 22 μm for anterior teeth versus 101 ± 19 μm for posterior ones. CONCLUSIONS Within the limitations of this preliminary evaluation, monolithic zirconia full-arch rehabilitations induced a clinically acceptable wear on natural and composite antagonists over a 1-year period; they might be considered a viable solution for implant-supported rehabilitations.
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Affiliation(s)
- Paolo Cardelli
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Francesco Pio Manobianco
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Nicola Serafini
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Giovanna Murmura
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
| | - Florian Beuer
- Department of Prosthodontics, Geriatic Dentistry and Craniomandibular Disorders, Charité - Universitätsmedizin Berlin, Berlin, Germany
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117
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Chong BJ, Thangavel AK, Rolton SB, Guazzato M, Klineberg IJ. Clinical and laboratory surface finishing procedures for zirconia on opposing human enamel wear: A laboratory study. J Mech Behav Biomed Mater 2015; 50:93-103. [DOI: 10.1016/j.jmbbm.2015.06.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 10/23/2022]
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118
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Mundhe K, Jain V, Pruthi G, Shah N. Clinical study to evaluate the wear of natural enamel antagonist to zirconia and metal ceramic crowns. J Prosthet Dent 2015; 114:358-63. [DOI: 10.1016/j.prosdent.2015.03.001] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 03/03/2015] [Accepted: 03/03/2015] [Indexed: 10/23/2022]
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119
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Amer R, Kürklü D, Johnston W. Effect of simulated mastication on the surface roughness of three ceramic systems. J Prosthet Dent 2015; 114:260-5. [DOI: 10.1016/j.prosdent.2015.02.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 02/11/2015] [Accepted: 02/12/2015] [Indexed: 11/24/2022]
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120
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Taira Y, Nakashima J, Sawase T, Sakihara M. Wear of tooth enamel against silver–palladium–gold alloy and two other restorative materials in vitro. J Prosthodont Res 2015; 59:210-2. [DOI: 10.1016/j.jpor.2015.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 02/10/2015] [Accepted: 03/17/2015] [Indexed: 10/23/2022]
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121
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Kwon MS, Oh SY, Cho SA. Two-body wear comparison of zirconia crown, gold crown, and enamel against zirconia. J Mech Behav Biomed Mater 2015; 47:21-28. [DOI: 10.1016/j.jmbbm.2014.11.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 11/06/2014] [Accepted: 11/10/2014] [Indexed: 11/16/2022]
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122
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Takeichi T, Miura S, Kasahara S, Egusa H, Hara M, Sato T, Yoshinari M, Odatsu T, Watanabe I, Sawase T. Update zirconia restorations. J Prosthodont Res 2015; 59:81-3. [PMID: 25487121 DOI: 10.1016/j.jpor.2014.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 11/10/2014] [Indexed: 11/26/2022]
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123
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An in vitro study of the wear mechanism of a leucite glass dental ceramic. BIOSURFACE AND BIOTRIBOLOGY 2015. [DOI: 10.1016/j.bsbt.2015.02.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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124
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125
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Preis V, Schmalzbauer M, Bougeard D, Schneider-Feyrer S, Rosentritt M. Surface properties of monolithic zirconia after dental adjustment treatments and in vitro wear simulation. J Dent 2015; 43:133-9. [DOI: 10.1016/j.jdent.2014.08.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 08/08/2014] [Accepted: 08/15/2014] [Indexed: 10/24/2022] Open
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126
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McCrea ES, Katona TR, Eckert GJ. The effects of salivas on occlusal forces. J Oral Rehabil 2014; 42:348-54. [PMID: 25484034 DOI: 10.1111/joor.12260] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2014] [Indexed: 11/28/2022]
Abstract
Contacting surfaces of opposing teeth produce friction that, when altered, changes the contact force direction and/or magnitude. As friction can be influenced by several factors, including lubrication and the contacting materials, the aim of this study was to measure the occlusal load alterations experienced by teeth with the introduction of different salivas and dental restorative materials. Pairs of molar teeth were set into occlusion with a weighted maxillary tooth mounted onto a vertical sliding assembly and the mandibular tooth supported by a load cell. The load components on the mandibular tooth were measured with three opposing pairs of dental restorative materials (plastic denture, all-ceramic and stainless steel), four (human and three artificial) salivas and 16 occlusal configurations. All lateral force component measurements were significantly different (P < 0·0001) from the dry (control) surface regardless of the crown material or occlusal configuration, while the effects of the artificial salivas compared to each other and to human saliva depended on the crown material.
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Affiliation(s)
- E S McCrea
- Department of Orthodontics and Oral Facial Genetics, Indiana University School of Dentistry, Indianapolis, IN, USA
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127
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Wear of enamel opposing zirconia and lithium disilicate after adjustment, polishing and glazing. J Dent 2014; 42:1586-91. [DOI: 10.1016/j.jdent.2014.09.008] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 08/19/2014] [Accepted: 09/15/2014] [Indexed: 11/22/2022] Open
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128
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Lee A, Swain M, He L, Lyons K. Wear behavior of human enamel against lithium disilicate glass ceramic and type III gold. J Prosthet Dent 2014; 112:1399-405. [DOI: 10.1016/j.prosdent.2014.08.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 08/04/2014] [Accepted: 08/05/2014] [Indexed: 11/17/2022]
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129
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Amer R, Kürklü D, Kateeb E, Seghi RR. Three-body wear potential of dental yttrium-stabilized zirconia ceramic after grinding, polishing, and glazing treatments. J Prosthet Dent 2014; 112:1151-5. [DOI: 10.1016/j.prosdent.2013.12.021] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 11/04/2013] [Accepted: 12/01/2013] [Indexed: 10/25/2022]
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130
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Dupriez ND, von Koeckritz AK, Kunzelmann KH. A comparative study of sliding wear of nonmetallic dental restorative materials with emphasis on micromechanical wear mechanisms. J Biomed Mater Res B Appl Biomater 2014; 103:925-34. [DOI: 10.1002/jbm.b.33193] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 02/25/2014] [Accepted: 04/21/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Nataliya Deyneka Dupriez
- Department of Operative/Restorative Dentistry, Periodontology and Pedodontics; Ludwig-Maximilians-University of Munich; Munich Germany
| | - Ann-Kristin von Koeckritz
- Department of Operative/Restorative Dentistry, Periodontology and Pedodontics; Ludwig-Maximilians-University of Munich; Munich Germany
| | - Karl-Heinz Kunzelmann
- Department of Operative/Restorative Dentistry, Periodontology and Pedodontics; Ludwig-Maximilians-University of Munich; Munich Germany
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131
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Passos SP, Torrealba Y, Major P, Linke B, Flores-Mir C, Nychka JA. In Vitro Wear Behavior of Zirconia Opposing Enamel: A Systematic Review. J Prosthodont 2014; 23:593-601. [DOI: 10.1111/jopr.12167] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2013] [Indexed: 11/30/2022] Open
Affiliation(s)
| | | | - Paul Major
- School of Dentistry, University of Alberta; Edmonton Canada
| | - Bernie Linke
- School of Dentistry, University of Alberta; Edmonton Canada
| | | | - John A. Nychka
- School of Dentistry, University of Alberta; Edmonton Canada
- Department of Chemical and Materials Engineering; University of Alberta; Edmonton Canada
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132
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Daou EE. The zirconia ceramic: strengths and weaknesses. Open Dent J 2014; 8:33-42. [PMID: 24851138 PMCID: PMC4026739 DOI: 10.2174/1874210601408010033] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 12/18/2013] [Accepted: 12/30/2013] [Indexed: 11/22/2022] Open
Abstract
Metal ceramic restorations were considered the gold standard as reliable materials. Increasing demand for esthetics
supported the commercialization of new metal free restorations. A growing demand is rising for zirconia prostheses.
Peer-reviewed articles published till July 2013 were identified through a Medline (Pubmed and Elsevier). Emphasizing
was made on zirconia properties and applications. Zirconia materials are able to withstand posterior physiologic loads.
Although zirconia cores are considered as reliable materials, these restorations are not problem free.
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Affiliation(s)
- Elie E Daou
- Department of Prosthodontics, Lebanese University, Beirut, Lebanon
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133
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Faria ACL, de Oliveira AA, Alves Gomes É, Silveira Rodrigues RC, Faria Ribeiro R. Wear resistance of a pressable low-fusing ceramic opposed by dental alloys. J Mech Behav Biomed Mater 2014; 32:46-51. [DOI: 10.1016/j.jmbbm.2013.12.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 12/10/2013] [Accepted: 12/17/2013] [Indexed: 11/29/2022]
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134
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Burgess JO, Janyavula S, Lawson NC, Lucas TJ, Cakir D. Enamel Wear Opposing Polished and Aged Zirconia. Oper Dent 2014; 39:189-94. [DOI: 10.2341/12-345-l] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Aging of dental zirconia roughens its surface through low temperature degradation. We hypothesized that age-related roughening of zirconia crowns may cause detrimental wear to the enamel of an opposing tooth. To test our hypothesis, we subjected artificially aged zirconia and reference specimens to simulated mastication in a wear device and measured the wear of an opposing enamel cusp. Additionally, the roughness of the pretest surfaces was measured. The zirconia specimens, artificially aged by autoclave, showed no significant increase in roughness compared to the nonaged specimens. Furthermore, no significant difference in material or opposing enamel wear between the aged and nonaged zirconia was seen. All zirconia specimens showed less material and opposing enamel wear than the enamel to enamel control or veneering porcelain specimens. Scanning electron micrographs showed relatively smooth surfaces of aged and nonaged zirconia following wear testing. The micrographs of the veneering ceramic showed sharp fractured edges and fragments of wear debris. Zirconia may be considered a wear-friendly material for restorations opposing enamel, even after simulated aging.
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Affiliation(s)
- JO Burgess
- John O Burgess, DDS, University of Alabama at Birmingham, Prosthodontics and Biomaterials, AL, USA
| | - S Janyavula
- Sridhar Janyavula, BDS, MS, University of Alabama at Birmingham, School of Dentistry, Clinical and Community Sciences, Birmingham, AL, USA
| | - NC Lawson
- Nathaniel C Lawson, DMD, MS, University of Alabama at Birmingham, Clinical and Community Sciences, Birmingham, AL, USA
| | - TJ Lucas
- Thomas J Lucas, MS, University of Alabama at Birmingham, School of Dentistry, Birmingham, AL, USA
| | - D Cakir
- Deniz Cakir, DDS, MS, University of Alabama at Birmingham, School of Dentistry, Clinical and Community Sciences, Birmingham, AL, USA
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135
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SAIKI O, KOIZUMI H, NOGAWA H, HIRABA H, AKAZAWA N, MATSUMURA H. Influence of ceramic surface texture on the wear of gold alloy and heat-pressed ceramics. Dent Mater J 2014; 33:865-73. [DOI: 10.4012/dmj.2014-129] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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136
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Impact of oral fluids on dental ceramics: What is the clinical relevance? Dent Mater 2014; 30:33-42. [DOI: 10.1016/j.dental.2013.08.199] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 08/05/2013] [Accepted: 08/08/2013] [Indexed: 02/04/2023]
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137
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Park JH, Park S, Lee K, Yun KD, Lim HP. Antagonist wear of three CAD/CAM anatomic contour zirconia ceramics. J Prosthet Dent 2014; 111:20-9. [DOI: 10.1016/j.prosdent.2013.06.002] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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138
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Hmaidouch R, Weigl P. Tooth wear against ceramic crowns in posterior region: a systematic literature review. Int J Oral Sci 2013; 5:183-90. [PMID: 24136675 PMCID: PMC3967317 DOI: 10.1038/ijos.2013.73] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 08/13/2013] [Indexed: 11/21/2022] Open
Abstract
The objective of this systematic review was to assess tooth wear against ceramic crowns in posterior region in vitro and in vivo. An electronic PubMed search was conducted to identify studies on tooth wear against ceramic crowns in posterior region. The selected studies were analyzed in regard to type of crowns, natural antagonist, measuring protocol and outcome. From a yield of 1 000 titles, 43 articles were selected for full-text analysis; finally, no in vitro and only five in vivo studies met the inclusion criteria. As there is heterogeneity in design, used measuring method, ceramics and analysis-form, a meta-analysis was not possible. Results of these studies are very controversial which makes a scientifically valid comparison impossible. This review indicated that some all-ceramic crowns are as wear friendly as metal-ceramic crowns. Up to now, it has been impossible to associate tooth wear with any specific causal agent. The role of ceramic surface treatment that might be responsible for the changing in rate of tooth wear seems undetermined as yet through clinical trials. The literature reveals that studies on this topic are subject to a substantial amount of bias. Therefore, additional clinical studies, properly designed to diminish bias, are warranted.
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139
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Luangruangrong P, Cook NB, Sabrah AH, Hara AT, Bottino MC. Influence of Full-Contour Zirconia Surface Roughness on Wear of Glass-Ceramics. J Prosthodont 2013; 23:198-205. [DOI: 10.1111/jopr.12088] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2013] [Indexed: 11/28/2022] Open
Affiliation(s)
- Palika Luangruangrong
- Department of Restorative Dentistry/Division of Dental Biomaterials; Indiana University School of Dentistry (IUSD); Indianapolis IN
- Department of Restorative Dentistry/Graduate Operative Dentistry, IUSD; Indianapolis IN
| | - N. Blaine Cook
- Department of Restorative Dentistry/Graduate Operative Dentistry, IUSD; Indianapolis IN
| | - Alaa H. Sabrah
- Department of Restorative Dentistry/Division of Dental Biomaterials; Indiana University School of Dentistry (IUSD); Indianapolis IN
- Department of Restorative Dentistry/Graduate Operative Dentistry, IUSD; Indianapolis IN
| | - Anderson T. Hara
- Department of Preventive and Community Dentistry, IUSD; Indianapolis IN
| | - Marco C. Bottino
- Department of Restorative Dentistry/Division of Dental Biomaterials; Indiana University School of Dentistry (IUSD); Indianapolis IN
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140
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Janyavula S, Lawson N, Lawson N, Cakir D, Beck P, Ramp LC, Burgess JO. The wear of polished and glazed zirconia against enamel. J Prosthet Dent 2013; 109:22-9. [PMID: 23328193 DOI: 10.1016/s0022-3913(13)60005-0] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
STATEMENT OF PROBLEM The wear of tooth structure opposing anatomically contoured zirconia crowns requires further investigation. PURPOSE The purpose of this in vitro study was to measure the roughness and wear of polished, glazed, and polished then reglazed zirconia against human enamel antagonists and compare the measurements to those of veneering porcelain and natural enamel. MATERIAL AND METHODS Zirconia specimens were divided into polished, glazed, and polished then reglazed groups (n=8). A veneering porcelain (Ceramco3) and enamel were used as controls. The surface roughness of all pretest specimens was measured. Wear testing was performed in the newly designed Alabama wear testing device. The mesiobuccal cusps of extracted molars were standardized and used as antagonists. Three-dimensional (3D) scans of the specimens and antagonists were obtained at baseline and after 200 000 and 400 000 cycles with a profilometer. The baseline scans were superimposed on the posttesting scans to determine volumetric wear. Data were analyzed with a 1-way ANOVA and Tukey Honestly Significant Difference (HSD) post hoc tests (α=.05) RESULTS Surface roughness ranked in order of least rough to roughest was: polished zirconia, glazed zirconia, polished then reglazed zirconia, veneering porcelain, and enamel. For ceramic, there was no measureable loss on polished zirconia, moderate loss on the surface of enamel, and significant loss on glazed and polished then reglazed zirconia. The highest ceramic wear was exhibited by the veneering ceramic. For enamel antagonists, polished zirconia caused the least wear, and enamel caused moderate wear. Glazed and polished then reglazed zirconia showed significant opposing enamel wear, and veneering porcelain demonstrated the most. CONCLUSIONS Within the limitations of the study, polished zirconia is wear-friendly to the opposing tooth. Glazed zirconia causes more material and antagonist wear than polished zirconia. The surface roughness of the zirconia aided in predicting the wear of the opposing dentition.
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Affiliation(s)
- Sridhar Janyavula
- Department of Prosthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, USA
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141
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Reduced wear of enamel with novel fine and nano-scale leucite glass-ceramics. J Dent 2013; 41:561-8. [DOI: 10.1016/j.jdent.2013.02.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 01/29/2013] [Accepted: 02/08/2013] [Indexed: 11/22/2022] Open
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142
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Kontos L, Schille C, Schweizer E, Geis-Gerstorfer J. Influence of surface treatment on the wear of solid zirconia. Acta Odontol Scand 2013; 71:482-7. [PMID: 23638857 DOI: 10.3109/00016357.2012.696690] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Recently there has been talk of the use of full-contour solid zirconia crowns or bridge restorations with no porcelain overlay. This could be a useful solution for patients with bruxism or limited interocclusal space. However, the hardness of zirconia could affect the opposite natural dentition. The aim of this in-vitro study was to investigate the role of surface treatments on the wear of a zirconia material and its antagonist. MATERIALS AND METHODS Fifty plates (10 × 10 × 1 mm) made of zirconia (LavaMulti(™) ZrO2, 3M ESPE), divided into five equal groups, were sandblasted and ground under standardized conditions with a fine-grit diamond bur (Komet Brasseler, Germany) to simulate clinical conditions. Group (a) was only fired, (b) was fired and sandblasted, (c) only ground, (d) was ground and additionally polished (EVE Ceramic Polishing-Set, Pforzheim) and (e) was ground and glazed. Wear behavior was measured with a pin-on-disk apparatus ABREX against 6 mm steatite balls as antagonists (45°, 5 N load, 5000 cycles, water). The amount of wear was determined topographically using a 3-D profilometer (Concept 3D, Mahr, Germany) by measuring the height loss of the antagonist and the depth of wear Pt of the zirconia. RESULTS In groups (a), (b), (c) and (d) the wear value Pt could not be determined (<1 μm). Wear values of the antagonists (steatite balls) revealed a similar outcome in contact with (b), (c) and (e) in the range of 81-85 μm, whereas (e) was more abrasive but not significantly. A noticeable difference in the wear of the antagonist showed group (d) to have the smallest value. CONCLUSION Polished zirconia seems to have the lowest wear on the antagonists, in contrast with the other kinds of surface treatment.
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Affiliation(s)
- Leonidas Kontos
- University of Tuebingen, Department of Prosthodontics, Section Medical Materials & Technology, Tuebingen, Germany.
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143
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ZENTHÖFER A, RAMMELSBERG P, SCHMITT C, OHLMANN B. Wear of metal-free resin composite crowns after three years in service. Dent Mater J 2013; 32:787-92. [DOI: 10.4012/dmj.2013-077] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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144
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Sethi S, Kakade D, Jambhekar S, Jain V. An in vitro investigation to compare the surface roughness of auto glazed, reglazed and chair side polished surfaces of Ivoclar and Vita feldspathic porcelain. J Indian Prosthodont Soc 2012; 13:478-85. [PMID: 24431779 DOI: 10.1007/s13191-012-0223-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Accepted: 11/28/2012] [Indexed: 10/27/2022] Open
Abstract
The change in surface roughness after different surface finishing techniques has attracted the attention of several prosthodontists regarding wear of opposing teeth or restorative material and the strength; plaque retention and appearance of the restoration. However, there is considerable controversy concerning the best methods to achieve the smoothest and strongest porcelain restorations after chair side clinical adjustments. The purpose of this in vitro study was to compare the average surface roughness of a self-glazed surface, a chair side polished surface and a reglazed surface of ceramic. Two feldspathic porcelain, namely VITA VMK94 (Vita Zahnfabrik, Bad Sachingen, Germany) and IVOCLAR CLASSIC (Vivadent AG, FL-9494 Schaan, Liechtenstein) were selected to fabricate 20 specimens of each in the shape of shade guide tabs. A medium-grit diamond rotary cutting instrument was used to remove the glaze layer, and then the surface of half the specimens were re-glazed and the other half were polished using a well-defined sequence of polishing comprising of: Shofu porcelain polishing system, White gloss disc/polishing wheel, Silicone cone with diamond polishing paste and finally with small buff wheel with pumice slurry. The surface roughness (Ra) (μm) of the specimens was evaluated using a profilometer and scanning electron microscope. The data were statistically analyzed by using Student's t test. The results had shown that there is no statistically significant difference both quantitatively and qualitatively, between the surface roughness of reglazed and chair-side polished surface. In addition, both reglazed and chair-side polished surfaces are better than the autoglazed surface. Within all the groups, there is no significant difference between companies. Polishing an adjusted porcelain surface with the suggested sequence of polishing will lead to a finish similar to a re-glazed surface. Therefore chair-side polishing can be a good alternative to reglazing for finishing adjusted porcelain surface.
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Affiliation(s)
- Sumit Sethi
- Department of Prosthodontics, Dr. D.Y. Patil Dental College and Hospital, Pimpri, Pune, 18 India
| | - Dilip Kakade
- Department of Prosthodontics, Dr. D.Y. Patil Dental College and Hospital, Pimpri, Pune, 18 India
| | | | - Vinay Jain
- College of Dentistry, University of Tennessee Health Science Center, Memphis, TN 38163 USA
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145
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Tang X, Tan Z, Nakamura T, Yatani H. Effects of ageing on surface textures of veneering ceramics for zirconia frameworks. J Dent 2012; 40:913-20. [DOI: 10.1016/j.jdent.2012.07.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Revised: 07/12/2012] [Accepted: 07/13/2012] [Indexed: 10/28/2022] Open
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146
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Khandelwal M, Jain D. A comparative evaluation of wear of enamel caused by ceramics with different fusion temperatures. J Indian Prosthodont Soc 2012; 13:513-9. [PMID: 24431784 DOI: 10.1007/s13191-012-0197-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Accepted: 10/16/2012] [Indexed: 11/30/2022] Open
Abstract
Dental ceramics are the most used esthetic fixed Prosthodontic restorative material today. However, dentists remain suspicious about their potential abrasivity. Lower-fusing ceramic materials developed, are claimed to be wear friendly. This study was conducted to compare the wear of enamel of extracted teeth against one conventionally used ceramic VMK-95 (fusing temperature 930 °C) and two new lower-fusing ceramics-Omega 900 and Finesse with fusing temperatures 900 and 760 °C respectively, used for metal-ceramic restorations. Metal disks were prepared from ceramic alloy and divided into three groups of 10 disks each on which VMK-95, Omega 900 and Finesse ceramics were applied respectively. Ceramic disks and tooth specimen were mounted on custom-made wear simulator and subjected to predefined masticatory test. Each tooth specimen was profiled by laser triangulation sensor before and after masticatory test. Difference in height was calculated. The results showed that mean loss of height of tooth was least against Finesse (0.3431 + 0.0177 mm) followed by Omega 900 (0.4076 + 0.0135 mm) and VMK-95 (0.6177 + 0.014 mm). Statistical analysis revealed statistically significant difference between VMK-95 & Omega 900 and VMK-95 & Finesse. The difference in loss of height of tooth against Finesse & Omega 900 is statistically insignificant (P < 0.001). The results of this study indicate that lower-fusing dental ceramics cause less wear of opposing enamel.
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Affiliation(s)
- Meenakshi Khandelwal
- Department of Prosthodontics, Darshan Dental College & Hospital, Udaipur, Rajasthan India ; 978 Gyan Nagar, Hiran Magri Sector 4, Udaipur, Rajasthan 313001 India
| | - Deshraj Jain
- Department of Prosthodontics, Government College of Dentistry, Indore, Madhya Pradesh India
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147
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Preis V, Behr M, Hahnel S, Handel G, Rosentritt M. In vitro failure and fracture resistance of veneered and full-contour zirconia restorations. J Dent 2012; 40:921-8. [DOI: 10.1016/j.jdent.2012.07.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Revised: 07/13/2012] [Accepted: 07/16/2012] [Indexed: 11/26/2022] Open
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148
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Kim MJ, Oh SH, Kim JH, Ju SW, Seo DG, Jun SH, Ahn JS, Ryu JJ. Wear evaluation of the human enamel opposing different Y-TZP dental ceramics and other porcelains. J Dent 2012; 40:979-88. [DOI: 10.1016/j.jdent.2012.08.004] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 07/30/2012] [Accepted: 08/04/2012] [Indexed: 10/28/2022] Open
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149
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Preis V, Behr M, Handel G, Schneider-Feyrer S, Hahnel S, Rosentritt M. Wear performance of dental ceramics after grinding and polishing treatments. J Mech Behav Biomed Mater 2012; 10:13-22. [DOI: 10.1016/j.jmbbm.2012.03.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 02/28/2012] [Accepted: 03/04/2012] [Indexed: 10/28/2022]
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150
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Mitov G, Heintze SD, Walz S, Woll K, Muecklich F, Pospiech P. Wear behavior of dental Y-TZP ceramic against natural enamel after different finishing procedures. Dent Mater 2012; 28:909-18. [PMID: 22608163 DOI: 10.1016/j.dental.2012.04.010] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 10/20/2011] [Accepted: 04/16/2012] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aim of this in vitro study was to evaluate the influence of different finishing procedures on the wear behavior of zirconia against natural enamel. METHODS 64 quadratic specimens (10 mm × 10 mm × 2 mm) were cut from a commercial hipped dental Y-TZP ceramic. Four different groups with 16 specimens each were formed according to the following finishing procedures: PZ (polished), RR (fine-grit diamond), GR (coarse-grit diamond), GZ (glazed). Polished specimens of a leucite-reinforced glass ceramic (Empress CAD) were used as a control (GC). The materials were subjected to the Ivoclar wear method (Willytec chewing simulator, 120,000 cycles, 5kg weight) with 80 natural caries-free cusps of first upper molars as antagonists. Wear was analyzed for both the enamel cusps and test specimens by measurement of the vertical substance loss with a laser scanner. Surface roughness was measured by means of a white-light interferometer. RESULTS The surface roughness was significantly different among the polished, diamond-finished, and glazed ceramic specimens (ANOVA, post hoc Bonferroni p<0.05). The results of the one-way ANOVA indicated that the finishing technique significantly affected enamel wear (p<0.05). The post hoc test indicated that the specimens finished with the coarse diamond caused significantly higher antagonist wear than the polished ones. Polished zirconia showed the lowest wear of the antagonist enamel, with a mean value of 171.74 (SD = 121.68), and resulted in enamel wear that was not significantly different from that of the glass ceramic control group. No significant linear correlation could be found between pre-testing surface roughness and abrasive wear. SIGNIFICANCE If zirconia is used without veneering material for crowns and fixed dental prostheses (FDPs), the surface must be well-polished if occlusal adjustments with coarse diamonds are performed. The polishing step reduces the wear of the opposing enamel.
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Affiliation(s)
- Gergo Mitov
- Department Prosthetic Dentistry, Danube Private University, Krems, Austria.
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