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Schneider LF, Mueller B, Nisie Tango R, Volpato CAM. Effect of coffee staining and simulated oral hygiene methods on the color and translucency of a nanoceramic resin. J ESTHET RESTOR DENT 2024; 36:1020-1028. [PMID: 38445806 DOI: 10.1111/jerd.13214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/20/2024] [Accepted: 02/25/2024] [Indexed: 03/07/2024]
Abstract
OBJECTIVE Evaluate the color and translucency of a nanoceramic resin subjected to hygiene practices and immersion in coffee over time. MATERIALS AND METHODS Specimens (n = 80, HT and LT, 0.5-mm thick) of a nanoceramic resin were obtained and were divided in groups according to the simulated oral hygiene: no intervention (NT), brushing with an electric brush and water (BN), brushing with an electric brush and toothpaste for 10 s (BT), and immersion in mouthwash for 30 s (MW). Oral hygiene practices were repeated after staining in coffee solution for 15, 48, 336, 1440, 8640, and 35,040 min. Spectral wavelengths were recorded with a spectrophotometer at each time. ∆E00, ∆L', ∆C', ∆H', and TP00 were calculated by CIEDE2000 and were evaluated by 2-way ANOVA, repeated measures ANOVA, and Tukey's HSD test (α = 0.05). RESULTS ANOVA showed significance among factors for ΔE00 (p < 0.05), with higher ΔE00 for NT-HT (11.7) and NT-LT (11.2). After T6 (2-year simulation), the lowest values were found for BT-HT (5.3) and BT-LT (4.9). All groups showed a reduction in lightness and translucency and increased chroma and hue. However, the smallest variations were found in the BT groups (p < 0.05). CONCLUSIONS Brushing with toothpaste effectively minimized the color change of NCRs caused by coffee staining. CLINICAL SIGNIFICANCE Oral hygiene practices, such as brushing with toothpaste, might be important to minimize staining of nanoceramic resin restorations, especially in patients who frequently consume coffee.
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Affiliation(s)
- Luiz Felipe Schneider
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Bruna Mueller
- Department of Dentistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Rubens Nisie Tango
- Department of Dental Materials and Prosthodontics, Institute of Science and Technology, State University of São Paulo, São José dos Campos, Brazil
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Soares-Rusu IBL, Villavicencio-Espinoza CA, de Oliveira NA, Wang L, Honório HM, Rubo JH, Borges AFS. Using digital photographs as a tool to assess the clinical color stability of lithium disilicate veneers: A clinical trial. J Prosthet Dent 2024; 131:859-864. [PMID: 35504735 DOI: 10.1016/j.prosdent.2022.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 03/14/2022] [Accepted: 03/14/2022] [Indexed: 11/30/2022]
Abstract
STATEMENT OF PROBLEM Clinical information regarding the color stability of lithium disilicate veneers by using different methods of evaluation is scarce. PURPOSE This clinical trial aimed to evaluate whether digital photographs are a reliable method of clinically assessing the color stability of lithium disilicate veneers. Standardized digital photographs (ELAB) were compared with the VITA Easyshade spectrophotometer (ES) at baseline and at a 6-month follow-up. MATERIAL AND METHODS A split-mouth model was used in this randomized clinical trial to assess the performance of ceramic veneers (N=162), which were produced by either the CAD (IPS e.max CAD; n=81) or PRESS technique by heat pressing (IPS e.max PRESS; n=81), including the color dimension assessment. The ELAB evaluation was performed by making digital photographs with polarized light and a white balance (WhiBal) card. These data were transferred to the Adobe Lightroom CC2015 software program in RAW extension. The Digital Color Meter App (Apple) was used to measure L∗, a∗, and b∗ coordinates in this method. The ES color evaluation was performed with a spectrophotometer (Easy Shade) (control group) in the CIELab system. Measurements were performed 1 week after cementation (baseline) and at a 6-month follow-up. Data collected by the ELAB and ES methods were analyzed by a blinded calibrated operator to calculate ΔE by using the Mann-Whitney-Wilcoxon test (α=.05). RESULTS For all periods, the comparison among ELAB and ES methods (P=.331), CAD×PRESS by ELAB (P=.658), and CAD×PRESS by ES (P=.833) showed no statistically significant differences. CONCLUSIONS Standardized digital photographs (ELAB) were shown to be a straightforward and available resource for evaluating the color stability of lithium disilicate veneers, manufactured by CAD or PRESS.
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Affiliation(s)
- Idiane B L Soares-Rusu
- Postgraduate student, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru, São Paulo, Brazil
| | - Carlos A Villavicencio-Espinoza
- Postgraduate student, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru, São Paulo, Brazil
| | - Naiara A de Oliveira
- Postgraduate student, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru, São Paulo, Brazil
| | - Linda Wang
- Full Professor, Department of Operative Dentistry, Endodontics and Dental Material, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru, São Paulo, Brazil
| | - Heitor M Honório
- Associate Professor, Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru, São Paulo, Brazil
| | - José H Rubo
- Full Professor, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru, São Paulo, Brazil
| | - Ana F S Borges
- Associate Professor, Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru, São Paulo, Brazil.
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Naffah N, Ounsi H, Ozcan M, Salameh Z. Evaluation of the Color Stability of Three Resin-Ceramic Materials Using a Spectrophotometer and a Digital Photography Software. Contemp Clin Dent 2024; 15:44-50. [PMID: 38707666 PMCID: PMC11068248 DOI: 10.4103/ccd.ccd_656_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 11/15/2018] [Accepted: 11/26/2018] [Indexed: 05/07/2024] Open
Abstract
Background Computer-aided design/computer-aided manufacturing (CAD/CAM) resin ceramics allow easier milling than glass ceramics but are suspected to be more stainable. Although Photoshop® is widely used for picture analysis, its potential for shade selection has not been properly assessed. Aim Purpose primary: To evaluate the color stability of three CAD/CAM resin ceramics and Lithium Disilicate. Secondary: to compare the color evaluation between a spectrophotometer (Vita Easyshade compact) and Photoshop software. Materials and Methods Three CAD/CAM resin ceramic materials (n = 10) and a fourth group of lithium disilicate were used. Half of each group were thermocycled (5°C and 55°C; 3000 cycles). All samples were immersed in colored beverages (coffee, tea and red wine) for 30 days. Values were obtained by spectrophotometry and photographs analyzed using Photoshop software. The parameters measured were CIEL*a*b, and the color difference (ΔE) was analyzed. A mixed model test was used to compare the results through time and materials (α = 0.05). The comparison between the spectrophotometer and Photoshop results was performed using the bivariate Pearson's correlation test. Results Lithium disilicate glass ceramic exhibited less color change (ΔE = 14) than resin ceramics (15.7 < ΔE < 18.7). The least change was noted with GC Cerasmart (ΔE = 15.7) followed by Vita Enamic (ΔE = 17*) and Brilliant Crios (ΔE = 18.7*). Spectrophotometer and Photoshop values showed low correlations. Conclusions Resin ceramics may suffer from color change in clinical use. Photoshop is technique sensitive; pictures are easily affected by the light conditions and camera settings.
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Affiliation(s)
- Nicolas Naffah
- Department of Prosthodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
| | - Hani Ounsi
- Department of Endodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
- Faculty of Dental Medicine, Siena University, Siena, Italy
| | - Mutlu Ozcan
- University of Zurich, Division of Dental Biomaterials, Clinic of Reconstructive Dentistry, Center of Dental Medicine, Zurich, Switzerland
| | - Ziad Salameh
- Department of Prosthodontics, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
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Choi SH, Shim HW, Lee HH, Ahn JS, Kim YJ, Shin SY, Lee JH, Choi YS. Effects of ultraviolet weathering aging on the color stability and biocompatibility of various computer-aided design and computer-aided manufacturing glass-ceramic materials. J Dent 2023; 139:104746. [PMID: 37863174 DOI: 10.1016/j.jdent.2023.104746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/04/2023] [Accepted: 10/18/2023] [Indexed: 10/22/2023] Open
Abstract
OBJECTIVES This study assessed the changes in color stability and biocompatibility of computer-aided design and computer-aided manufacturing (CAD-CAM) glass-ceramics after ultraviolet weathering (UW) aging. METHODS A total of 300 plate-shaped specimens (12.0 × 14.0 × 1.5 mm3) were prepared using a leucite-reinforced glass-ceramic (IPS Empress CAD; E), a lithium disilicate (IPS e.max CAD; M), and two zirconia-reinforced lithium silicate (Celtra Duo; C, Vita Suprinity; V) glass-ceramics. Specimens were divided into three groups (n = 25, each), subjected to water storage at 37 °C for 24 h (control group), or UW aging at 150 kJ/m2 (first-aged group) or 300 kJ/m2 (second-aged group). The color stability, mechanical and surface properties, and biocompatibility of the CAD-CAM glass-ceramics were investigated experimentally, followed by statistical analysis. RESULTS The brightness and redness or greenness were reduced in all groups after aging. After the first aging, V exhibited the largest color change and E exhibited the smallest color change. After the second aging, E exhibited the highest nanoindentation hardness and Young's modulus. The surface roughness was the highest for V after the first aging. Furthermore, the hydrophilicity of the materials increased after aging process. The cell proliferation/viability of human gingival fibroblasts was the highest in E before and after aging. Almost all cells survived for all groups based on a live/dead assay. CONCLUSIONS Leucite-reinforced glass-ceramic exhibit the highest color stability and biocompatibility after aging. The color stability and biocompatibility of CAD-CAM glass-ceramics depend on the aging process and material type. CLINICAL SIGNIFICANCE Various CAD-CAM glass-ceramics exhibit adequate color stability after UW aging. The leucite-reinforced glass-ceramics exhibit the highest color stability, cell proliferation, and viability after aging. The color stability, mechanical and surface properties, and biocompatibility of the glass-ceramics depend on the aging process and material type.
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Affiliation(s)
- Su-Hyun Choi
- Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan 31116, Republic of Korea
| | - Hye-Won Shim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea; Mechanobiology Dental Medicine Research Center, Dankook University, Cheonan 31116, Republic of Korea
| | - Hae-Hyoung Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan 31116, Republic of Korea
| | - Jin-Soo Ahn
- Department of Dental Biomaterials Science and Dental Research Institute, School of Dentistry, Seoul National University, 03080, Republic of Korea
| | - Yu-Jin Kim
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 31116, Republic of Korea
| | - Soo-Yeon Shin
- Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan 31116, Republic of Korea.
| | - Jung-Hwan Lee
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea; Mechanobiology Dental Medicine Research Center, Dankook University, Cheonan 31116, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan 31116, Republic of Korea; UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan 31116, Republic of Korea; Cell & Matter Institute Dankook University, Cheonan 31116, Republic of Korea; Department of Regenerative Dental Medicine, School of Dentistry, Dankook University, Cheonan 31116, Republic of Korea.
| | - Yu-Sung Choi
- Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan 31116, Republic of Korea; Mechanobiology Dental Medicine Research Center, Dankook University, Cheonan 31116, Republic of Korea.
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Effect of aging on color, gloss and surface roughness of CAD/CAM composite materials. J Dent 2023; 130:104423. [PMID: 36642325 DOI: 10.1016/j.jdent.2023.104423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/17/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVES To assess the effect of aging procedures on color, gloss and surface roughness of CAD/CAM composite materials. METHODS 6 CAD/CAM composite materials (Brilliant CRIOS, Cerasmart, Lava Ultimate, Tetric CAD, Shofu Block HC, Grandio Blocs) were tested. 10 CAD/CAM fabricated specimens of each material polished according to manufacturers' recommendations, were subjected to one of the following aging procedures; immersion in coffee (30 days, 37οC), water thermocycling (5000 cycles, 5-55 °C) and photoaging (150,000 kJ/m2). Color, gloss and surface roughness measurements were performed before and after aging and the respective changes were calculated. Kruskal-Wallis tests, paired t-tests, one-way ANOVA and Bonferroni post-hoc tests were used for statistical analysis (a = 0.05). RESULTS Color changes ranged from 3.03 to 4.13 after coffee immersion, from 1.33 to 2.55 after thermocycling and from 1.02 to 2.75 after photoaging. No statistically significant differences for ΔE*ab were found among materials after coffee immersion and thermocycling (p>0.05). Gloss changes ranged from -5.7 to -1.6 GU after coffee immersion, from -2.3 to 0.1 GU after thermocycling and from -4.4 to 0.5 GU after photoaging. No significant differences in gloss changes were found among materials after aging (p>0.05). Tetric CAD demonstrated the significantly lower gloss and the higher surface roughness after polishing. Except for gloss after thermocycling, aging procedures caused significant alteration of gloss and surface roughness parameters from baseline levels. CONCLUSIONS Aging procedures caused perceptible but acceptable color changes and small but visible gloss changes, while surface roughness parameters of the tested CAD/CAM composite materials were significantly affected by aging. CLINICAL SIGNIFICANCE Aging procedures affected CAD/CAM composite materials indicating that these materials may be prone to color and surface alterations in the oral environment that could compromise the esthetics and the performance of the restorations. Clinical studies are needed to investigate the long-term behavior of the newly introduced CAD/CAM materials.
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Shiozawa M, Tsuchida Y, Suzuki T, Takahashi H. Discoloration of fiber-reinforced composite resin disc for computer-aided design/computer-aided manufacturing after immersion in coffee and curry solutions. Dent Mater J 2023; 42:64-71. [PMID: 36244740 DOI: 10.4012/dmj.2022-121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The purpose of this study was to clarify the discoloration of fiber-reinforced composite resin (FRC) disc materials. The color differences (ΔEs) of three CAD/CAM disc materials, FRC with different fiber orientations, composite resin, and polyether-ether-ketones were evaluated after month-long immersion in water, coffee, and curry. The ΔEs of all materials after coffee and curry immersion increased with increasing immersion periods, while those after water immersion barely increased. FRC exhibited a smaller color difference and water sorption value than composite resin and a greater color difference and water sorption value than polyether-ether-ketones. The ΔEs after coffee immersion were significantly correlated with the water sorption value. The ΔE of FRC with fiber orientations perpendicular to the surface was greater than that of FRC with fiber orientations parallel to the surface, likely due to greater exposure of the matrix-fiber interface. This result suggested that the fiber orientations of FRC affected the discoloration.
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Affiliation(s)
- Maho Shiozawa
- Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Yumi Tsuchida
- Department of Digital Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Tetsuya Suzuki
- Course for Oral Health Engineering, Tokyo Medical and Dental University
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Qaraghuli AM, Signore A, Benedicenti S, Halawani MTE, Solimei L. Comparison and Effect of Common Beverages on Color Stability of Different Esthetic Restorative Materials: An In Vitro Study. J Contemp Dent Pract 2022; 23:1085-1090. [PMID: 37073930 DOI: 10.5005/jp-journals-10024-3419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
AIM The aim of this in vitro study is to assess the color stability of different esthetic veneer restorative materials (feldspathic ceramic, hybrid ceramic, zirconia-reinforced lithium silicate glass ceramic, and composite resin) after being exposed to commonly consumed beverages that have staining potential. MATERIALS AND METHODS Sixty specimens were prepared into rectangular blocks with fixed dimensions of 10 × 12 × 2.5 mm. Machinable feldspathic ceramic (FC), zirconia-reinforced lithium silicate glass ceramic (LS), and a hybrid ceramic (HC) were milled using CAD/CAM (n = 15), and specimens of microparticle composite resin (MPC) were manually prepared by with the same dimensions (n = 15). All specimens were randomly divided into three subgroups (= 5) according to immersing solutions used (coffee, black tea, and red wine). All specimens were immersed for a period of 72 hours. A colorimetric evaluation was done for each specimen before and after immersion using a spectrophotometer and the difference in color was calculated according to the CIE-Lab system. To analyze the data, two-way ANOVA and one-way ANOVA tests of significance were used to compare between the different study groups, followed by pairwise comparisons using post hoc test (Tukey). RESULTS Different restorative materials showed statistical significance regarding color change after staining (p < 0.001); however, no statistical significance in color change (p > 0.05) was found between the different beverages used. CONCLUSION All tested ceramic materials had better color stability compared with composite resin. All the staining beverages used in the current study might cause a significant color change in the tested restorative materials. CLINICAL SIGNIFICANCE The color stability of esthetic restorative materials affects their clinical performance in the oral cavity, where the restorative materials are usually exposed to staining beverages that are frequently consumed by patients. Therefore, it is important to understand the staining effect of the different beverages on esthetic restorative materials.
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Affiliation(s)
- Abdulkhaleq Mohammed Qaraghuli
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Largo R Benzi, Genoa, Italy; Department of Dentistry, Al-Farabi University College, Baghdad, Iraq, Phone: +9647704333814 e-mail: ;
| | - Antonio Signore
- Department of Therapeutic Stomatology, Institute of Dentistry, IM Sechenov First Moscow State Medical University, Moscow, Russia
| | - Stefano Benedicenti
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Largo R Benzi, Genoa, Italy
| | - Mohamed Tarek El Halawani
- Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt; Prosthodontics Department, Faculty of Dentistry, Alamein International University, Al Alamein City, Matrouh, Egypt
| | - Luca Solimei
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Largo R Benzi, Genoa, Italy
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Schelkopf S, Dini C, Beline T, Wee AG, Barão VAR, Sukotjo C, Yuan JCC. The Effect of Smoking and Brushing on the Color Stability and Stainability of Different CAD/CAM Restorative Materials. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15196901. [PMID: 36234241 PMCID: PMC9571481 DOI: 10.3390/ma15196901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/22/2022] [Accepted: 10/02/2022] [Indexed: 05/14/2023]
Abstract
This study aimed to investigate and compare the color stability and stainability of computer-aided design/computer-aided manufacturing (CAD/CAM) restorative materials in their glazed (G) and polished (P) state when exposed to cigarette smoke, as well as after brushing. Three CAD/CAM restorative materials were investigated: lithium disilicate CAD (LD), zirconia (Zr), and Telio PMMA CAD (PMMA), according to their surface finishing and assignment to cigarette smoking exposure or soaking in the saliva (control) group. The color change (∆E) was calculated before and after the intervention performed for all specimens, using the L*a*b values to quantitatively assess the shade differences. Statistical analysis was performed using one-way repeated measures ANOVA and Bonferroni multiple comparison analysis (α = 0.05). The surface finishing did not influence the materials’ stainability. Color change was noted after smoking, LD and Zr-G and Zr-P had a comparable color change (p > 0.05), while PMMA presented lower ∆E values (p < 0.05). After brushing, all specimens had a significant color change that was high for LD-G and LD-P, and Zr-G, compared with Zr-P and PMMA (p < 0.05). In conclusion, the exposure to cigarette smoke showed that LD, Zr, and PMMA are all susceptible to staining, but brushing decreases surface staining.
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Affiliation(s)
- Stuart Schelkopf
- Private Practice, University Associates in Dentistry, 222 N Lasalle St., Chicago, IL 60601, USA
| | - Caroline Dini
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba 13414-903, São Paulo, Brazil
| | - Thamara Beline
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba 13414-903, São Paulo, Brazil
| | - Alvin G. Wee
- Department of Restorative Sciences, School of Dentistry, University of Minnesota, 9-470 Moos Tower, 515 Delaware St. SE, Minneapolis, MN 55455, USA
| | - Valentim A. R. Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira, 901, Piracicaba 13414-903, São Paulo, Brazil
| | - Cortino Sukotjo
- Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, 801 S Paulina, Chicago, IL 60612, USA
- Correspondence: (C.S.); (J.C.-C.Y.)
| | - Judy Chia-Chun Yuan
- Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, 801 S Paulina, Chicago, IL 60612, USA
- Correspondence: (C.S.); (J.C.-C.Y.)
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Lee WF, Takahashi H, Huang SY, Zhang JZ, Teng NC, Peng PW. Effects of At-Home and In-Office Bleaching Agents on the Color Recovery of Esthetic CAD-CAM Restorations after Red Wine Immersion. Polymers (Basel) 2022; 14:3891. [PMID: 36146038 PMCID: PMC9503437 DOI: 10.3390/polym14183891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to evaluate the effects of at-home and in-office bleaching agents on esthetic CAD-CAM materials after red wine immersion by measuring their optical properties. Sixty specimens were prepared out of three esthetic CAD-CAM materials: Vita Enamic, Celtra Duo, and Ceresmart (n = 20). All specimens were immersed in a red wine solution, and color measurements were performed. Specimens were randomly divided (n = 10) according to the bleaching procedure (in office, at home), bleaching durations were set to 3 time points, and color measurements were performed. According to the Commission Internationale de l’Eclairage (CIE) L* a* b* parameters, CIEDE2000 color differences (ΔE00), translucency parameters (TP00), and whiteness index values (ΔWID) after wine staining and after bleaching were calculated. Data were analyzed using the Mann−Whitney U-test, the Kruskal−Wallis test, and a two-way analysis of variance (ANOVA) (α = 0.05). ΔE00, ΔTP00, and ΔWID decreased with an increase in bleaching treatment. ΔE00 after the final bleaching treatment of in-office bleaching ranged from 1.7 to 2.0, whereas those of in-office treatment ranged from 0.4 to 1.1. All ΔTP00 and ΔWID after the final treatment were below the 50:50% perceptibility thresholds (ΔTP00 < 0.6, and ΔWID < 0.7). Significant differences in ΔE00, ΔTP00, and ΔWID among esthetic CAD-CAM materials were found between CD and CE. In the present study, color recovery after at-home and in-office bleaching appeared to be material-dependent. In-office bleaching showed more effective recovery comparing to at-home bleaching.
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Affiliation(s)
- Wei-Fang Lee
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Hidekazu Takahashi
- Course for Oral Engineering, Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8549, Japan
| | - Shiun-Yi Huang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Jia-Zhen Zhang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Nai-Chia Teng
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Pei-Wen Peng
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 11031, Taiwan
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Chotiwutthiphatthana D, Angwaravong O, Angwarawong T. Effect of Different Indirect Composite Onlay and Core Materials on Fracture Resistance of Endodontically Treated Maxillary Premolars. J Prosthodont Res 2022. [PMID: 35979556 DOI: 10.2186/jpr.jpr_d_22_00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE To compare and evaluate the effects of different indirect composite onlay and/or core buildup materials on the fracture resistance and fracture mode of restored endodontically treated premolars. METHODS Two conventional handmade indirect composite resins (SR Nexco (NC) and Ceramage (CM)) and two core buildup materials, dual-cure composite resin (MultiCore Flow (MC)), and short fiber-reinforced composite resin (EverX Posterior (EXP)), were selected. Sixty maxillary premolars were randomly divided into six groups (n=10). Group 1 included intact teeth (INT; negative control). Mesio-occluso-distal cavity preparation and endodontic treatment was performed on the remaining premolars. Group 2 was restored with polymer-reinforced zinc oxide eugenol intermediate restorative material (IRM; positive control), whereas the experimental groups (groups 3-6) were restored with core buildup material and indirect composite onlay (MC_NC, MC_CM, EXP_NC, and EXP_CM). The specimens received compressive loading using a universal testing machine, at 45° to the long axis with a crosshead speed of 0.5 mm/min until fracture. Fracture modes were visually analyzed. Fracture resistance was measured and statistically analyzed using two-way and one-way ANOVA (α=0.05). RESULTS Only the type of indirect composite onlay affected the fracture resistance of the experimental groups (P=0.009). The MC_CM group showed the highest fracture resistance, which was significantly higher than that of the MC_NC group (P=0.031). No statistically significant differences were found between the INT group and other experimental groups(P>0.05). All groups had a greater incidence of restorable than unrestorable failures. CONCLUSION The type of indirect composite onlay affected the fracture resistance of restored endodontically treated maxillary premolars.
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Affiliation(s)
| | - Onauma Angwaravong
- Division of Pediatric Dentistry, Department of Preventive Dentistry, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
| | - Thidarat Angwarawong
- Department of Prosthodontics, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
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Optical Property Stability of Light-Cured versus Precured CAD-CAM Composites. Int J Dent 2022; 2022:2011864. [PMID: 35685910 PMCID: PMC9173916 DOI: 10.1155/2022/2011864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/13/2022] [Accepted: 05/17/2022] [Indexed: 11/18/2022] Open
Abstract
Objective. The aim of this study was to evaluate the optical property changes after staining of precured (PC) and light-cured (LC) composites. Materials and Methods. Specimens were prepared using different LC composites (GrandioSO—Voco, Filtek Z350-3M/ESPE, Opallis—FGM, and Kalore—GC) and four PC blocks (Grandio Blocs—Voco, Lava Ultimate—3M ESPE, Brava Block—FGM, and Cerasmart—GC) from the same manufacturers (n = 20). Baseline color, gloss, translucency, and fluorescence were evaluated. The staining protocol was performed for 15 days, and the final optical properties were reevaluated. Results. The changes in each property were calculated (ΔGloss, ΔTranslucency, ΔFluorescency, ΔE
00). Data were analyzed by ANOVA and Tukey’s test (α = 5%). Changes in all properties were observed after staining for all materials, with darkening and reduction of gloss, fluorescence, and translucency. Nonsignificant differences were observed between the light-cured and precured materials of the same manufacturer for ΔG and ΔT, but significant differences existed for ΔF and ΔE
00. For ΔF, the only significant differences were observed between Brava Block and Opallis (smaller). For ΔE
00, only the light-cured composites GrandioSO and Z350 showed significantly less change than the corresponding blocks. Precured composites were affected the same way as light-cured ones by the staining in relation to the reduction of gloss and translucency. Conclusion. A higher reduction in fluorescence was observed for only one brand of block and was similar for the others. The two brands of light-cured materials showed less staining, while for the others, the staining was similar. The effects of staining vary according to the composite formulation.
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Yerliyurt K, Sarıkaya I. Color stability of hybrid ceramics exposed to beverages in different combinations. BMC Oral Health 2022; 22:180. [PMID: 35568863 PMCID: PMC9107770 DOI: 10.1186/s12903-022-02206-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/28/2022] [Indexed: 11/10/2022] Open
Abstract
Background The aim of this study is to evaluate the color stability of hybrid ceramics stored in different combinations of beverages that are routinely consumed. Methods The specimens were prepared with resin nano-ceramic (Lava Ultimate, 3M Espe, USA) and hybrid ceramic (Vita Enamic, Vita Zahnfabrik, Germany). The specimens were aged in a thermocycler machine for 10,000 cycles. They were stored in different combinations of beverages (water, tea, coke, coffee, red wine, pomegranate juice, and turnip juice) for 12 + 12 h. Surface roughness measurements were performed using a profilometer. The specimen colors were measured using a spectrophotometer. The color values (L-a-b) of the specimens and mean surface roughness values (Ra) were recorded at the end of the 1st (D1), 7th (D7), 14th (D14) and 28th (D28) d. Results When the solution groups were examined, significant color changes were observed in the Lava coffee-tea, Enamic coffee-tea, Lava coffee-wine, and Enamic coffee-wine groups compared with the other groups (p < 0.01). Except for the samples in the Lava coffee-wine 28th day (D28) and Enamic coffee-wine 28th day (D28) groups, more color changes were observed in the Lava samples than in the Enamic samples across all groups and periods. Conclusion Greater color changes (except for the samples stored in coffee-wine) were observed in the Lava samples than in the Enamic samples across all groups and periods. It was observed that the coffee-tea and coffee-wine beverage combinations produced the greatest color change in hybrid ceramics within the limitations of this study.
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Affiliation(s)
- Kaan Yerliyurt
- Department of Prosthodontics, Tokat Gaziosmanpaşa University Faculty of Dentistry, 60100, Tokat, Turkey.
| | - Işıl Sarıkaya
- Department of Prosthodontics, Tokat Gaziosmanpaşa University Faculty of Dentistry, 60100, Tokat, Turkey
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Elsaka S, Taibah S, Elnaghy A. Effect of staining beverages and bleaching on optical properties of a CAD/CAM nanohybrid and nanoceramic restorative material. BMC Oral Health 2022; 22:96. [PMID: 35346162 PMCID: PMC8958766 DOI: 10.1186/s12903-022-02136-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/17/2022] [Indexed: 12/05/2022] Open
Abstract
Background The purpose of this study was to evaluate the optical properties of nanohybrid Grandio (GR) and nanoceramic Lava Ultimate (LU) CAD/CAM restorative materials subjected to different beverage solutions and subsequently bleached. Methods Five groups of each restorative material (n = 20/group, shade A2-high translucent) were immersed in distilled water, coffee, tea, cola, and ginger for one week. Changes in whiteness index, translucency parameter, and color changes of the specimens were evaluated. The data of color measurements after staining, bleaching, and the residual differences were statistically analyzed using Kruskal–Wallis and Mann–Whitney U tests at the significance level of P < 0.05. Results LU and GR revealed the highest differences in whiteness index after coffee staining (P < 0.001). GR revealed lower translucency parameter differences after staining with coffee than LU (P = 0.007). There were no significant differences in translucency changes between LU and GR after staining with tea, cola, or ginger (P > 0.05). LU revealed significantly greater color changes than GR after staining (P < 0.001). Conclusions LU nanoceramic CAD/CAM restorative material revealed higher color changes than GR nanohybrid material. Staining beverage solutions had a distinct influence on the optical properties of the tested CAD/CAM restorative materials.
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da Cruz MEM, Oliveira JJR, Dovigo LN, Fonseca RG. Long-term effect of gastric juice alternating with brushing on the surface roughness, topography, and staining susceptibility of CAD-CAM monolithic materials. J Prosthet Dent 2022; 127:659.e1-659.e11. [DOI: 10.1016/j.prosdent.2022.01.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 12/26/2022]
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Katayama Y, Ohashi K, Iwasaki T, Kameyama Y, Wada Y, Miyake K, Tanimoto Y, Nihei T. A study on the characteristics of resin composites for provisional restorations. Dent Mater J 2021; 41:256-265. [PMID: 34789622 DOI: 10.4012/dmj.2021-006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this study, we evaluated the characteristics of five commercial resin composites used for provisional restorations. The inorganic filler contents of the resins were measured, and three-point bending, wear, surface hardness, water absorption, and staining tests were performed. The specimens underwent additional three-point bending tests after water storage and undergoing thermal stresses at 5°C and 55°C (10,000 cycles). Data were analyzed using one- or two-way analysis of variance and Bonferroni post-hoc tests. Pearson's correlation coefficient was used for pairwise comparisons. Each resin composite presented with different mechanical properties, based on variations in the inorganic filler content. The flexural strength of each resin composite was significantly decreased after water storage. There has a positive correlation between flexural strength and dynamic hardness but a negative correlation between flexural strength and maximum wear depth. The types and contents of the inorganic fillers, the composition of the monomer in the resin matrix, and the addition of plasticizers can affect the properties of the material.
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Affiliation(s)
- Yuta Katayama
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Katsura Ohashi
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Taro Iwasaki
- Department of Dental Biomaterials, Nihon University School of Dentistry at Matsudo
| | - Yuka Kameyama
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Yuuki Wada
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Kaori Miyake
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
| | - Yasuhiro Tanimoto
- Department of Dental Biomaterials, Nihon University School of Dentistry at Matsudo
| | - Tomotaro Nihei
- Division of Clinical Biomaterials, Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University
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Adawi HA, Al Moaleem MM, Al Ahmari NM, Shariff M, Qahhar MA, Muharraq SM, Alghazali NA. Assessment of Color Stainability of Computer-Aided Design and Computer-Aided Manufacturing (CAD/CAM) Ceramic Materials After Hot and Cold Coffee Immersion at Different Time Intervals. Med Sci Monit 2021; 27:e932745. [PMID: 34601487 PMCID: PMC8496336 DOI: 10.12659/msm.932745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/10/2021] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND This spectrophotometric study assessed the color stability of CAD/CAM restorative materials with different exposed surfaces following staining by hot Arabic Qahwa and cold coffee. MATERIAL AND METHODS Ninety-six specimens were fabricated from 3 different CAD/CAM ceramic materials: Vita Suprinity (Vita-S), Vita Enamic (Vita-E), and Vitablocs Mark II (Vitablocs-MII). We divided 32 specimens for each group into glazed or polished surfaces, with 16 specimens in each group, then subdivided them according to staining materials: Arabic Qahwa and Frappuccino Cold Coffee. Color of specimens was measured during immersion in staining materials (BEFORE) as baseline with (Vita classic) and (L, a, b), for average color changes (ΔE₀₀), then remeasured after 2, 4, and 12 weeks, and described as 1st, 2nd, and 3rd measurements for VITAPAN Classic shade and T1, T2, and T3 for ΔE00 values using the CIE L*a*b* equation. We performed ANOVA and then post hoc testing. RESULTS We found significant differences in ΔE₀₀ values during immersing in hot Arabic Qahwa and cold coffee for tested materials in glazed or polished specimens. Polished specimens of Vita-S and Vita-E had the highest color changing and staining compared to glazed surfaces. Vitablocs-MII had the best color stability through immersion periods. Moreover, there were changes in relation to VITAPAN Classic shade guide for both Vita-S and Vita-E specimens during different immersion periods. CONCLUSIONS Coffee caused staining and contamination of ceramic material. Values of ΔE₀₀ for tested ceramic materials were significantly different but were within the clinically acceptable range. Polished specimens showed higher staining; therefore, we highly recommend re-glazing of ceramic restorations to maintain color stability.
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Affiliation(s)
- Hafiz A. Adawi
- Department of Prosthetic Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Mohammed M. Al Moaleem
- Department of Prosthetic Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Nasser M. Al Ahmari
- Department of Prosthetic, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Mansoor Shariff
- Department of Prosthetic, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Mohammed A. Qahhar
- General Practitioner, Altuwal General Hospital, Ministry of Health, Jazan, Saudi Arabia
| | | | - Nabiel A. Alghazali
- School of Dental Sciences, University of Liverpool, Liverpool, UK
- Department of Prosthodontics, Aleppo University, Aleppo, Syria
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Alpkilic DS, Ongul D, Isler Deger S. Stainability of different ceramic materials against mouth rinses and effect of polishing after staining. J Prosthet Dent 2021; 126:686.e1-686.e7. [PMID: 34538467 DOI: 10.1016/j.prosdent.2021.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 05/29/2021] [Accepted: 06/01/2021] [Indexed: 11/28/2022]
Abstract
STATEMENT OF PROBLEM Mouth rinses are known to stain tooth surfaces. However, their staining effect on different ceramics after prolonged use and the effect of polishing after staining are still unclear. PURPOSE The purpose of this in vitro study was to evaluate the stainability of different ceramic materials against different mouth rinses and the effect of polishing on staining. MATERIAL AND METHODS Forty disk-shaped specimens were prepared from each material (total of 160 specimens): lithium disilicate (IPS e.max CAD), zirconia-reinforced lithium disilicate (VITA SUPRINITY PC), leucite-reinforced feldspar (GC Initial LRF), and resin matrix ceramic (CERASMART). Baseline color measurements (T0) were recorded with a clinical spectrophotometer (VITA Easyshade V). The specimens were immersed in chlorhexidine gluconate (CHX) 0.2% mouth rinse (Klorhex), (KLO) chlorhexidine gluconate 0.1% mouth rinse (Eludril) (ELU), a daily mouth rinse (LISTERINE Cool Mint) (LIS), artificial saliva (CON) continuously for 7 days (T1), 14 days (T2), and 28 days (T3). Discoloration values (ΔE) between the immersion time points (T0,T1,T2,T3) were calculated by using the following formula: ΔE= ([ΔL∗]2 + [Δa∗]2 + [Δb∗]2)1/2. After the immersion process, specimens were polished and ΔE values remeasured. The Kruskal-Wallis and Mann-Whitney U tests were performed (α=.05) and were adjusted by postanalysis Bonferroni testing. RESULTS KLO caused the highest ΔE values in all groups. IPS e.max CAD had the lowest ΔE values, and CERASMART showed the highest ΔE values against all of the solutions (P<.05). However, polishing caused a decrease in the ΔE values in all groups. CONCLUSIONS Prolonged use of mouth rinses may cause color change in different ceramic materials. Polishing affected the color change and resulted in a decrease in ΔE values. Mouth rinses containing CHX should be recommended with caution for daily use.
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Affiliation(s)
- Dilara Seyma Alpkilic
- Research Assistant, Department of Prosthodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.
| | - Deger Ongul
- Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Sabire Isler Deger
- Professor, Department of Prosthodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
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ŞİŞMANOĞLU S, GÜRCAN AT. Evaluation of Stain Susceptibility of Different CAD/CAM Blocks After Immersion in Coffee. DÜZCE ÜNIVERSITESI SAĞLIK BILIMLERI ENSTITÜSÜ DERGISI 2021. [DOI: 10.33631/duzcesbed.840660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Soares-Rusu I, Villavicencio-Espinoza CA, de Oliveira NA, Wang L, Honório HM, Rubo JH, Francisconi P, Borges A. Clinical Evaluation of Lithium Disilicate Veneers Manufactured by CAD/CAM Compared with Heat-pressed Methods: Randomized Controlled Clinical Trial. Oper Dent 2021; 46:143-150. [PMID: 33882132 DOI: 10.2341/19-233-c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2020] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE Lithium disilicate veneers for esthetic restorations show great accuracy and similarity, regardless of the type of fabrication technique. SUMMARY
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20
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Tango RN, Todorović A, Stamenković D, Karasan DN, Sailer I, Paravina RD. Effect of Staining and Aging on Translucency Parameter of CAD-CAM Materials. Acta Stomatol Croat 2021; 55:2-9. [PMID: 33867532 PMCID: PMC8033622 DOI: 10.15644/asc55/1/1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Objectives To evaluate different intervals of exposure to staining solutions and artificial aging on translucency parameter (TP00) of CAD-CAM materials. Material and Methods One millimeter thick square-shaped specimens (N = 288) were cut from Cerasmart (CS), IPS e.max (IE), Lava Ultimate (LU), Shofu HC (SH), Vita Enamic (VE), and Vita Suprinity (VS) and were divided into laboratory and chairside polishing. Reflection wavelength spectra, CIE D65 standard illuminant, 2 ° standard observer, SCI, UV included, SAV aperture, 6 mm diameter, were recorded at 10 nm sensitivity against white and black calibration tiles using a benchtop spectrophotometer. Subsequently, they were converted into CIEDE 2000 TP00. After baseline measurements (T0), the specimens were divided as follows (n = 8): staining in coffee (C) and wine (W), for 60 (T1) and 120 hours (T2), and accelerated artificial aging (A). Artificial aging (ISO 4892-2 standard) was performed in two cycles of 150 KJ/m2, for T1 and T2, respectively. TP measurements were repeated at T1 and T2. Data of TP00 retention were submitted to analysis of variance and Fisher’s PLSD multiple comparison test (α=0.05). Results Fisher’s PLSD critical differences among materials, time intervals and staining/aging were 0.16, 0.11 and 0.11, respectively. SH showed the highest TP00 followed by LU > CS > IE = VS > VE. For all time intervals, the lowest TP00 retention was observed with C. W, and A presented similar values. Conclusions Translucency Parameter was a time and staining/aging-dependent material. In majority of cases, it decreased upon staining/aging.
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Affiliation(s)
- Rubens Nisie Tango
- Department of Dental Materials and Prosthodontics, State University of Sao Paulo School of Dentistry at Sao Jose dos Campos, Sao Jose dos Campos, Brazil and Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, Houston, TX
| | - Ana Todorović
- Department of Prosthodontics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Dejan Stamenković
- Private practice, Belgrade and Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, Houston, TX
| | - Duygu Narin Karasan
- Division of Fixed Prosthodontics and Biomaterials, University of Geneva, Geneva, Switzerland
| | - Irena Sailer
- Division of Fixed Prosthodontics and Biomaterials, University of Geneva, Geneva, Switzerland
| | - Rade Dušan Paravina
- Department of Restorative Dentistry and Prosthodontics and Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, Houston, TX
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Color Stability of Dental Reinforced CAD/CAM Hybrid Composite Blocks Compared to Regular Blocks. MATERIALS 2020; 13:ma13214722. [PMID: 33105868 PMCID: PMC7660196 DOI: 10.3390/ma13214722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/19/2020] [Accepted: 10/20/2020] [Indexed: 11/17/2022]
Abstract
This study compares the color stability of dental reinforced computer-aided design/computer-aided manufacturing (CAD/CAM) hybrid composite blocks to that of regular blocks. One hundred fifty disc-type specimens (n = 15) were prepared from five sets of hybrid composite blocks (Cerasmart-200/Cerasmart-300, KZR-CAD HR/KZR-CAD HR3, Estelite Block/ Estelite-P Block, Avencia Block/Avencia-P Block, Mazic Duro/Duro Ace). The specimen color and translucency parameter (TP) were assessed using a spectrophotometer before and after immersion in staining solutions (water, 10% ethanol, simulated red wine). Changes in color (ΔE) and translucency (ΔTP) of specimens were calculated. The data were analyzed using the analysis of variance (ANOVA) and Tukey’s post hoc test (p < 0.05). Microstructural features of the hybrid composite blocks were also examined using FE-SEM. Immersion in deionized water or 10% ethanol made no significant color or translucency changes (except for Avencia-P Block); however, the simulated red wine caused significant changes to the color and translucency of almost all specimens, especially after 4 weeks of immersion. The reinforced hybrid blocks (except for Estelite-P Block and Duro Ace) showed lower color stability than corresponding regular blocks. Avencia-P Block showed significantly reduced color stability compared to Avencia Block. Even in deionized water and 10% ethanol, Avencia-P Block showed perceptible ΔE and decreased translucency. Estelite Block/ Estelite-P Block and Mazic Duro/Duro Ace showed better color stability than the other materials tested.
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Stamenković DD, Tango RN, Todorović A, Karasan D, Sailer I, Paravina RD. Staining and aging-dependent changes in color of CAD-CAM materials. J Prosthet Dent 2020; 126:672-678. [PMID: 33041075 DOI: 10.1016/j.prosdent.2020.09.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 09/03/2020] [Accepted: 09/03/2020] [Indexed: 11/15/2022]
Abstract
STATEMENT OF PROBLEM Consumption of some beverages and aging may affect the color of dental materials used in fixed prosthodontics, but their effect on recently introduced materials is not well known. PURPOSE The purpose of this in vitro study was to evaluate staining, aging, and the exposure interval on color changes of computer-aided design and computer-aided manufacturing (CAD-CAM) resin nanoceramics (RNC), polymer-infiltrated ceramic-network (PICN) materials, and lithium silicate and lithium disilicate ceramics. MATERIAL AND METHODS A total of 288 square-shaped, 1-mm-thick specimens prepared from Cerasmart, IPS e.max, Lava Ultimate, Shofu HC, Vita Enamic, and Vita Suprinity were polished by using laboratory and chairside methods in accordance with the manufacturers' instructions. Color data were recorded with a benchtop spectrophotometer, and CIEDE2000 color differences (ΔE00) were calculated. After the baseline measurements (T0), the specimens were divided into 3 groups (n=8) and exposed to staining in coffee and wine and to accelerated artificial aging. The specimens were stored in staining solutions at 37 °C for 60 (T1) and 120 hours (T2). Accelerated aging was performed by using a xenon lamp weathering test chamber for a total exposure of 150 (T1) and 300 kJ/m2 (T2). The results were analyzed by using the t test, ANOVA, and the Tukey honestly significant difference test (α=.05). Color differences of ΔE00 ≤0.8 and ≤1.8 corresponding to the 50:50% perceptibility threshold and 50:50% acceptability threshold were used to interpret the results. RESULTS As color differences (ΔE00) between laboratory and chairside polishing were not statistically significant (T=-0.81, P=.418), only the results for chairside polished specimens were presented. Color differences for the T0-T1 comparisons ranged from 0.2 to 4.2, T0-T2 from 0.3 to 6.5, and T1-T2 from 0.1 to 2.3. ANOVA showed significance of factors and for interactions (P<.05). Lithium silicate-based and lithium disilicate-based ceramic materials were more color stable than RCN and PICN materials on exposure to coffee and red wine. Color changes greater than acceptability threshold after immersion in coffee were recorded for 3 (T0-T1), 4 (T0-T2), and 2 (T1-T2) materials. Corresponding findings after immersion in wine were 1, 3, and 0 and after artificial aging 0, 2, and 0. ΔE00 and ΔEab values were highly correlated (R2=0.97). CONCLUSIONS No difference was found in color stability among laboratory and chairside polished specimens. Coffee caused the greatest color changes for T0-T2 interval. Staining-dependent color differences increased with increased exposure, except for IPS e.max and Vita Suprinity. For artificial aging, color change appeared to be material dependent.
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Affiliation(s)
- Dejan D Stamenković
- Professional Trainee, Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, Houston, Texas; Private practice, Belgrade, Serbia
| | - Rubens Nisie Tango
- Associate Professor, Department of Dental Materials and Prosthodontics, State University of Sao Paulo (UNESP) School of Dentistry at Sao Jose dos Campos, Sao Jose dos Campos, Brazil; Visiting Scientist, Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, Houston, Texas
| | - Ana Todorović
- Teaching Assistant, Department of Prosthodontics, School of Dental Medicine, University of Belgrade, Belgrade, Serbia
| | - Duygu Karasan
- Research Assistant, Division of Fixed Prosthodontics and Biomaterials, University of Geneva, Geneva, Switzerland
| | - Irena Sailer
- Professor and Chair, Division of Fixed Prosthodontics and Biomaterials, University of Geneva, Geneva, Switzerland
| | - Rade D Paravina
- Professor, Department of Restorative Dentistry and Prosthodontics and Director, Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, Houston, Texas.
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Choi YS, Kang KH, Att W. Evaluation of the response of esthetic restorative materials to ultraviolet aging. J Prosthet Dent 2020; 126:679-685. [PMID: 33041076 DOI: 10.1016/j.prosdent.2020.09.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/11/2020] [Accepted: 09/11/2020] [Indexed: 11/30/2022]
Abstract
STATEMENT OF PROBLEM The optical properties of esthetic computer-aided design and computer-aided manufacturing (CAD-CAM) materials can change depending on the clinical situation. Studies that compare esthetic CAD-CAM materials based on their optical properties are lacking. PURPOSE The purpose of this in vitro study was to evaluate the optical properties of esthetic CAD-CAM specimens after ultraviolet (UV) aging based on the type and thickness of the material. MATERIAL AND METHODS In total, 240 plate-shaped specimens (14×12×1 mm and 14×12×2 mm) of a nanohybrid composite resin (Tetric CAD), a fine-structure feldspathic ceramic (Vitablocs Mark II), 2 different glass-ceramics (IPS Empress CAD and IPS e.max CAD), a zirconia-reinforced lithium silicate glass-ceramic (Celtra Duo), a polymer-infiltrated ceramic network (Vita Enamic), and 2 different resin nanoceramics (Cerasmart and Lava Ultimate) were fabricated (n=15). The optical parameters were analyzed by spectrophotometry before and after UV aging. The brightness (L∗), red green (a∗), yellow-blue (b∗), chroma (Ch), and hue (h) were measured, and the color difference (ΔE00) values were calculated. The translucency parameter (TP), total transmittance (Tt), and contrast ratio (CR) were also determined. Statistical analyses were performed with 1-way ANOVA, the Tukey honestly significant difference post hoc test, independent- and paired-samples t tests, and 2-way ANOVA (α=.05). RESULTS Significant interactions were observed for the aging process, material type, and thickness for all optical parameters (P<.05). L∗, TP, and Tt had lower values, while CR had higher values for the aging group than that of the control group (P<.05). The h, TP, and Tt values were higher, whereas the b∗ and CR values were lower for the 1-mm group than those of the 2-mm group (P<.05). The highest ΔE00 value was found in the Lava Ultimate 1-mm group (ΔE00=3.21) and 2-mm group (ΔE00=2.42). The lowest ΔE00 value was found in the Vitablocs Mark II 1-mm group (ΔE00=0.31). The highest TP and Tt and the lowest CR values were observed for Tetric CAD; the lowest TP and Tt, and the highest CR values were noted in Celtra Duo (P<.05). CONCLUSIONS The optical properties of the CAD-CAM specimens were affected by the aging process, material type, and thickness, and the color stability was clinically applicable in all CAD-CAM materials except groups Lava Ultimate and Cerasmart(ΔE00<2.25). Resin nanoceramics exhibited the greatest color changes after UV aging, and a 2-mm thickness is recommended to ensure acceptable color stability. The zirconia-reinforced lithium silicate glass-ceramic was the most opaque, with a 1-mm thickness providing increased translucency.
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Affiliation(s)
- Yu-Sung Choi
- Associate Professor, Department of Prosthodontics, College of Dentistry, Dankook University, Cheonan, Republic of Korea; Visiting Professor, Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Mass.
| | - Ki-Ho Kang
- Professor and Advanced Education Program Director, Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Mass
| | - Wael Att
- Professor and Chairman, Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Mass
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Koçak EF, Ekren O, Johnston WM, Uçar Y. Analysis of color differences in stained contemporary esthetic dental materials. J Prosthet Dent 2020; 126:438-445. [PMID: 32958303 DOI: 10.1016/j.prosdent.2020.08.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 11/30/2022]
Abstract
STATEMENT OF PROBLEM Although contemporary analytical methods are available for application to data which exhibit a lack of equality of variances or a lack of normality in the error distribution, little guidance is provided for selecting the methods of data handling and analysis which best fit color difference data for stained esthetic materials. PURPOSE The purposes of this in vitro study were to apply information criteria of analysis of variance (ANOVA) methods of differing error distributions and covariance structures when analyzing color differences to determine the degree of alienation among 3 Commission Internationale de l'Eclairage (CIE) color difference formulae to assess the linearity of relationships among these formulae and to independently assess differences among various computer-aided design and computer-aided manufacture (CAD-CAM) materials in any color change after common forms of staining over time. MATERIAL AND METHODS Hybrid ceramic, resin nanoceramic, feldspathic-ceramic, and lithium-disilicate ceramic specimens (N=128) were subjected to staining from water, tea, coffee, and red wine over 1, 7, and 30 days, with color differences calculated from baseline. Akaike information criteria (AIC) and Bayesian information criteria (BIC) values were determined for Gaussian and lognormal error distributions at covariance structures of standard variance components and compound-symmetry. The analysis of variance used to analyze any significant effects on these color differences was the one with the lowest AIC and BIC values. Then, for each solution, day, and CIE color difference formula, any significant difference in the color differences between all pairs of materials was found by Bonferroni-corrected Student t tests. Those statistically significant pairwise comparisons where the larger of the color differences met or exceeded the acceptability threshold were labeled as statistically and visually noteworthy. RESULTS For this color difference data set, the lognormal error distribution and the covariance structure of compound symmetry provided the best AIC and BIC. Because the interaction between material, solution, and day was statistically significant (P<.001), pairwise comparisons were made between all pairs of materials for each level of solution and day studied. Noteworthy differences were identified, where hybrid ceramic and resin nanoceramic each had color changes after staining in coffee and red wine that were greater than each of feldspathic-ceramic and lithium-disilicate ceramic. CONCLUSIONS AIC and BIC values evaluate distinctively the Gaussian and lognormal error distributions when analyzing highly varying color differences. Although there is a high linear correlation between the 3 color difference formulae studied, each formula is unique, and each represents a different assessment of the perceived color difference. CAD-CAM materials, staining liquids, and time points affected the notable color changes.
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Affiliation(s)
- Elif Figen Koçak
- Lecturer, Department of Prosthetic Dentistry, College of Dentistry and the Abdi Sutcu Vocational School of Health Services, Çukurova University, Balcalı, Adana, Turkey
| | - Orhun Ekren
- Associate Professor, Department of Prosthetic Dentistry, College of Dentistry, Çukurova University, Balcalı, Adana, Turkey; Associate Professor, Department of Advanced Materials and Nanotechnology, Institute of Natural and Applied Sciences, Çukurova University, Balcalı, Adana, Turkey
| | - William M Johnston
- Professor Emeritus, Division of Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, Ohio.
| | - Yurdanur Uçar
- Professor, Department of Prosthetic Dentistry, College of Dentistry, Çukurova University, Balcalı, Adana, Turkey; Professor, Department of Biotechnology, Institute of Natural and Applied Sciences, Çukurova University, Balcalı, Adana, Turkey; Professor, Department Head, Department of Advanced Materials and Nanotechnology, Institute of Natural and Applied Sciences, Çukurova University, Balcalı, Adana, Turkey
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Alevizakos V, Mitov G, Teichert F, von See C. The color stability and wear resistance of provisional implant restorations: A prospective clinical study. Clin Exp Dent Res 2020; 6:568-575. [PMID: 32736414 PMCID: PMC7545226 DOI: 10.1002/cre2.311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 06/11/2020] [Indexed: 11/07/2022] Open
Abstract
Objectives The aim of the present clinical study was to determine the stability of color and resistance against abrasion and attrition of provisional single implant restorations. Material and Methods A group of 16 patients were treated with provisional crowns made of Telio CAD. Shortly before the insertion the crowns were photographed and scanned using a 3D‐laser scanner. After 8 weeks of clinical usage, the crowns were photographed and scanned again. The vertical occlusal wear and color changes between the restorations were measured. Results The occlusal plane of the original crown showed a statistically significant reduction of 0.052 mm ± 0.037 mm 8 weeks after placement (p < .05). For the stability of color, a change in red, green and blue was described. All three scopes (red, green and blue) showed a statistically significant reduction (p < .05). Conclusions This prospective clinical study showed that Telio CAD experienced a significant occlusal reduction and color change after an intraoral placement of 8 weeks.
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Affiliation(s)
- Vasilios Alevizakos
- Center for Digital Technologies in Dentistry and CAD/CAMDanube Private UniversityKrems an der DonauAustria
| | - Gergo Mitov
- Center for Prosthetic Dentistry and Dental BiomaterialsDanube Private UniversityKremsAustria
| | - Franziska Teichert
- Center for Digital Technologies in Dentistry and CAD/CAMDanube Private UniversityKrems an der DonauAustria
| | - Constantin von See
- Center for Digital Technologies in Dentistry and CAD/CAMDanube Private UniversityKrems an der DonauAustria
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Souza J, Fuentes MV, Baena E, Ceballos L. One-year clinical performance of lithium disilicate versus resin composite CAD/CAM onlays. Odontology 2020; 109:259-270. [PMID: 32705420 PMCID: PMC7790784 DOI: 10.1007/s10266-020-00539-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 07/09/2020] [Indexed: 11/28/2022]
Abstract
To compare the 1-year clinical performance of lithium disilicate and resin composite CAD/CAM onlay restorations. Twenty patients that required two restorations in posterior teeth, with at least one cusp to be covered, received two onlays. One was made with IPS e.max CAD (Ivoclar-Vivadent) and the other with Lava Ultimate (3M Oral Care). Two blind observers evaluated the restorations at baseline and 1 year after the onlays were cemented, according to FDI criteria. At each recall, digital photographs, bite-wing radiographs and impressions of the restorations were taken for SEM evaluation of the interface. Results were analyzed by Mann–Whitney U and Wilcoxon tests (p < 0.05). At baseline and in the 1-year recall, both CAD/CAM materials exhibited excellent results in most criteria with similar esthetic, functional and biological properties (p > 0.05). However, deterioration in surface lustre (p = 0.020) and color match/translucency (p = 0.039) were detected for IPS e.max CAD onlays after 1-year. Under SEM evaluation, there were no statistically differences in micromorphological criteria at baseline nor after a year between IPS e.max CAD and Lava Ultimate onlays. Conclusion: After 1 year of clinical service IPS e.max CAD and Lava Ultimate onlays showed a similar clinical performance that needs to be confirmed in long-term evaluations.
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Affiliation(s)
- Joana Souza
- Area of Stomatology, IDIBO Research Group, Health Sciences Faculty, Rey Juan Carlos University, Avenida de Atenas s/n, 28922, Alcorcón, Madrid, Spain
| | - Mª Victoria Fuentes
- Area of Stomatology, IDIBO Research Group, Health Sciences Faculty, Rey Juan Carlos University, Avenida de Atenas s/n, 28922, Alcorcón, Madrid, Spain
| | - Eugenia Baena
- Area of Stomatology, IDIBO Research Group, Health Sciences Faculty, Rey Juan Carlos University, Avenida de Atenas s/n, 28922, Alcorcón, Madrid, Spain
| | - Laura Ceballos
- Area of Stomatology, IDIBO Research Group, Health Sciences Faculty, Rey Juan Carlos University, Avenida de Atenas s/n, 28922, Alcorcón, Madrid, Spain.
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Tinastepe N, Malkondu O, Iscan I, Kazazoglu E. Effect of home and over the contour bleaching on stainability of
CAD
/
CAM
esthetic restorative materials. J ESTHET RESTOR DENT 2020; 33:303-313. [DOI: 10.1111/jerd.12604] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 04/06/2020] [Accepted: 05/16/2020] [Indexed: 11/29/2022]
Affiliation(s)
| | - Ozlem Malkondu
- Department of Prosthodontics, Faculty of Dentistry Yeditepe University Istanbul Turkey
| | - Ipek Iscan
- Department of Prosthodontics, Faculty of Dentistry Medipol University Istanbul Turkey
| | - Ender Kazazoglu
- Department of Prosthodontics, Faculty of Dentistry Yeditepe University Istanbul Turkey
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Color Stability of Glass Ionomer Cement after Reinforced with Two Different Nanoparticles. Int J Dent 2020; 2020:7808535. [PMID: 32565811 PMCID: PMC7281814 DOI: 10.1155/2020/7808535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 12/02/2019] [Accepted: 01/30/2020] [Indexed: 11/18/2022] Open
Abstract
Aim This study aimed to compare the staining characteristics of a commercially available restorative glass ionomer cement to a formulation reinforced by the addition of carbon nanotubes and another formulation reinforced by the addition of silver nanoparticles to the powder of the same cement. Methodology. Twenty samples each of a control glass ionomer cement (PULPDENT® Glass Fill®, Pulpdent Corp. Watertown, MA, USA), control cement reinforced with 0.0006 gm (0.03% by weight) of carbon nanotubes (Sigma Aldrich, St Louis MO, USA), and control cement reinforced with 0.2 gm (10% by weight) of silver nanoparticles (Nanocyl™, Nanocyl SA, Sambreville, Belgium) were immersed in a staining solution. Color evaluations were carried out after 1 h, 24 h, and 1 week. Color change values were calculated. Results The results indicated that carbon nanotube reinforced specimens exhibited less color stability when compared to controlled glass ionomer cement specimens; however, both samples had significantly greater color stability than silver nanoparticle reinforced glass ionomer samples. Conclusion It can be concluded within the limitations of this study that carbon nanotube reinforced glass ionomer cements have better color stability than silver nanoparticle reinforced glass ionomer cements.
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Liebermann A, Vehling D, Eichberger M, Stawarczyk B. Impact of storage media and temperature on color stability of tooth-colored CAD/CAM materials for final restorations. J Appl Biomater Funct Mater 2020; 17:2280800019836832. [PMID: 31621471 DOI: 10.1177/2280800019836832] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND This in-vitro study examined the impact of storage solution, storage duration, and storage temperature on discoloration of three tooth-colored CAD/CAM materials for final restorations. METHODS Specimens (N = 288; n = 96 per material) with a thickness of 1 ± 0.03 mm of the following CAD/CAM materials were fabricated: resin composite (Lava Ultimate, 3M), polymer-infiltrated ceramic (VITA Enamic, VITA Zahnfabrik), and leucite ceramic (IPS Empress CAD, Ivoclar Vivadent). After baseline measurement, specimens were stored in red wine, curry solution, cress solution, and distilled water at 37°C or 55°C. The discoloration was measured using a spectrophotometer (Lambda 35 Perkin Elmer, Perkin Elmer Inc.) after 1 and 7 days storage. Data were analyzed using four-way ANOVA followed by the Scheffé post-hoc test and partial eta squared (ηP²) test (p < 0.05). RESULTS The highest influence on ∆E was exerted by storage duration (ηP² = 0.295, p < 0.001), followed by storage solution (ηP² = 0.171, p < 0.001), CAD/CAM material (ηP² = 0.049, p < 0.001), and storage temperature (ηP² = 0.033, p < 0.001). Specimens stored for 7 days in staining solutions showed more discoloration than those stored for just 1 day. Higher ∆E values were achieved for specimens stored in curry solution, followed by red wine, cress solution, and distilled water. Resin composite Lava Ultimate showed larger ∆E values compared with the resin hybrid ceramic VITA Enamic and leucite ceramic IPS Empress CAD. Specimens stored at 37°C showed significantly less discoloration than those stored at 55°C. CONCLUSIONS The degree of coloration of the materials depends on food and temperature and was most pronounced with Lava Ultimate.
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Affiliation(s)
- Anja Liebermann
- Department of Prosthetic Dentistry, LMU Munich, Munich, Germany
| | - Dirk Vehling
- Department of Prosthetic Dentistry, LMU Munich, Munich, Germany
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Aydın N, Karaoğlanoğlu S, Oktay EA, Kılıçarslan MA. Investigating the color changes on resin‐based CAD/CAM Blocks. J ESTHET RESTOR DENT 2019; 32:251-256. [DOI: 10.1111/jerd.12561] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/31/2019] [Accepted: 12/11/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Numan Aydın
- Gulhane Faculty of Dentistry, Department of Restorative Dental TreatmentUniversity of Health Sciences Ankara Turkey
| | - Serpil Karaoğlanoğlu
- Gulhane Faculty of Dentistry, Department of Restorative Dental TreatmentUniversity of Health Sciences Ankara Turkey
| | - Elif A. Oktay
- Gulhane Faculty of Dentistry, Department of Restorative Dental TreatmentUniversity of Health Sciences Ankara Turkey
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Dellazzana FZ, Rodrigues CS, Mallmann A, Jacques LB. Optical Properties of a Glass Ceramic and an Indirect Resin Composite: Effects of Polishing and Staining. JOURNAL OF HEALTH SCIENCES 2019. [DOI: 10.17921/2447-8938.2019v21n5p512-517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
AbstractLittle information is available about the optical behavior of glass ceramics and indirect resin composites. This study aimed to evaluate if an indirect resin composite can present similar behavior of color stability and translucency to a glass ceramic after polishing and aging in staining beverage. Specimens of a dental ceramic (IPS e.max Ceram) and an indirect resin composite (SR Adoro) were made. Half the specimens of each material were polished with disc-shaped tips. Groups were divided according to aging media: distilled water or immersion in red wine for 20 min/day during 30 days. CIE L*a*b* coordinates were measured with a spectrophotometer at baseline and after 30 days of aging. Color change was calculated by CIEDE2000 and translucency was calculated by contrast ratio (CR). Statistical analysis were performed with ANOVA and Tukey tests. Aging in red wine caused perceptible color change in both materials. Polishing only increased color change of indirect composite when aged in red wine. Ceramic groups showed greater opacity than the composite in all measurements. The indirect composite remained more translucent and results showed that it is capable of presenting color stability similar to a ceramic. However, polishing seems to increase its color change. Keywords: Ceramics. Color. Composite Resins. Dental Polishing. ResumoPouca informação comparando o comportamento óptico de cerâmicas vítreas e resinas compostas indiretas estão disponíveis na literatura. O objetivo deste estudo foi avaliar se uma resina composta indireta pode apresentar comportamento semelhante a uma cerâmica vítrea em relação à estabilidade de cor e translucidez após polimento e envelhecimento em meio altamente pigmentante. Espécimes de uma cerâmica vítrea (IPS e.max Ceram) e uma resina composta indireta (SR Adoro) foram preparados. Metade dos espécimes de cada material foram polidas com pontas de polimento. Os grupos foram divididos conforme o meio de armazenamento: água destilada ou vinho tinto por 20 min/dia durante 30 dias. As coordenadas CIEL*a*b* foram medidas com espectrofotômetro previamente e após os 30 dias de armazenamento. A alteração de cor foi calculada pela equação CIEDE2000 e a translucidez foi calculada por razão de contraste. A análise estatística foi realizada pelos testes ANOVA e teste de Tukey. O armazenamento em vinho levou a uma alteração de cor perceptível nos dois materiais. O polimento apenas causou alteração de cor na resina composta indireta quando imersa em vinho tinto. A resina composta indireta manteve-se mais translúcida e os resultados mostraram que esse material é capaz de apresentar estabilidade de cor semelhante à cerâmica. No entanto, o polimento parece aumentar sua alteração de cor. Palavras-chave: Cerâmica. Cor. Polimento Dentário. Resinas Compostas.
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Gasparik C, Culic B, Varvara MA, Grecu A, Burde A, Dudea D. Effect of accelerated staining and bleaching on chairside CAD/CAM materials with high and low translucency. Dent Mater J 2019; 38:987-993. [PMID: 31511474 DOI: 10.4012/dmj.2018-335] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of the study was to assess the effect of staining and bleaching on CAD/CAM materials with high (HT) and low translucency (LT or T). Samples were stored in coffee and subsequently bleached. CIELAB parameters were recorded at baseline, after coffee immersion, after bleaching. Translucency parameter (TP), whiteness index (WID) and color changes were calculated (ΔE00). Influence of staining and bleaching was analyzed with repeated-measures ANOVA and color differences between materials were analyzed with one-way ANOVA (α=0.05). Staining and bleaching significantly affected CIELAB parameters and WID for all materials (p<0.001). TP was significantly influenced by staining and bleaching for Crios and Enamic (p<0.05). Mean color differences were significantly different between materials (p<0.001). The greatest color changes due to staining were observed for Lava Ultimate while the lowest for e.max CAD. Both coffee staining and bleaching induced greater color changes for HT materials of the same brand compared to LT.
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Affiliation(s)
- Cristina Gasparik
- Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy
| | - Bogdan Culic
- Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy
| | - Mihai Adrian Varvara
- Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy
| | - Alexandru Grecu
- Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy
| | - Alexandru Burde
- Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy
| | - Diana Dudea
- Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy
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Arif R, Yilmaz B, Johnston WM. In vitro color stainability and relative translucency of CAD-CAM restorative materials used for laminate veneers and complete crowns. J Prosthet Dent 2019; 122:160-166. [DOI: 10.1016/j.prosdent.2018.09.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 10/27/2022]
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Barutçugil Ç, Bilgili D, Barutcigil K, Dündar A, Büyükkaplan UŞ, Yilmaz B. Discoloration and translucency changes of CAD-CAM materials after exposure to beverages. J Prosthet Dent 2019; 122:325-331. [PMID: 31307808 DOI: 10.1016/j.prosdent.2019.01.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 11/18/2022]
Abstract
STATEMENT OF PROBLEM Color and translucency changes of recently introduced composite resin blocks after long-term exposure to various staining agents have not been fully investigated. PURPOSE The purpose of this in vitro study was to evaluate the color stainability and translucency changes of computer-aided design and computer-aided manufacturing (CAD-CAM) materials immersed in beverages with staining potential. MATERIAL AND METHODS Three types of CAD-CAM blocks were used: 3M Lava Ultimate (LU), GC Cerasmart (CS), and VITA Enamic (VE). Forty-five rectangular specimens (1.5-mm thickness) of each product were prepared. The specimens were divided into 3 subgroups (n=15 in each) according to the immersion beverage. The specimens were then immersed in distilled water, red wine, and coffee for 30 days. Color parameters (ΔE00), the translucency parameter, and the contrast ratio were determined after 24 hours and 1 month. The Kruskal-Wallis and Mann-Whitney U tests and the Wilcoxon, Freidman, and repeated measurement ANOVA tests were used for statistical analysis (α=.05). RESULTS None of the materials showed clinically perceptible color changes except CS specimens immersed in coffee for 24 hours. The materials immersed in red wine and coffee for 1 month showed greater discoloration than those immersed in water (P<.05). The LU immersed in red wine showed the highest translucency changes, and VE was more resistant to translucency changes, as compared with the other materials tested. The contrast ratio values of the LU material were higher than those of the CS and VE materials in all the beverages. CONCLUSIONS The red wine and coffee caused significant changes in the color and translucency of these novel CAD-CAM materials after a long immersion period.
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Affiliation(s)
- Çağatay Barutçugil
- Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Dilber Bilgili
- Research Assistant, Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey.
| | - Kubilay Barutcigil
- Research Assistant, Department of Prosthetic Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Ayşe Dündar
- Assistant Professor, Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Ulviye Şebnem Büyükkaplan
- Associate Professor, Department of Prosthetic Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Burak Yilmaz
- Professor, Division of Restorative Sciences and Prosthodontics, College of Dentistry, The Ohio State University, Columbus, Ohio
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Turgut S, Kılınç H, Bağış B. Effect of UV aging on translucency of currently used esthetic CAD‐CAM materials. J ESTHET RESTOR DENT 2019; 31:147-152. [DOI: 10.1111/jerd.12460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 12/05/2018] [Accepted: 01/23/2019] [Indexed: 11/29/2022]
Affiliation(s)
- Sedanur Turgut
- Faculty of Dentistry, Prosthodontics DepartmentKaradeniz Technical University Trabzon Turkey
| | - Hamiyet Kılınç
- Faculty of Dentistry, Prosthodontics DepartmentBolu Abant Izzet Baysal University Bolu Turkey
| | - Bora Bağış
- Faculty of Dentistry, Prosthodontics Departmentİzmir Katip Çelebi University Turkey
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Schürmann MG, Olms C. Shade Stability of Polymer-Infiltrated and Resin Nano Ceramics. Open Dent J 2018; 12:791-800. [PMID: 30450137 PMCID: PMC6198420 DOI: 10.2174/1745017901814010791] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 07/31/2018] [Accepted: 09/19/2018] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND The esthetics plays an increasingly significant role in today's dentistry. OBJECTIVE The objective was to investigate the shade stability of a polymer-infiltrated and a resin nano ceramic in comparison to a conventional feldspar ceramic and an acrylate polymer. METHODS 20 specimens of each of the materials, CAD-Temp (CT), Mark II (M), VITA Enamic (VE) and Lava Ultimate (LU), were prepared using the standard method. These were divided into groups (n=5) and placed in the following stain solutions: Distilled water, coffee, Coca-Cola and red wine for 14 days. The shade of each specimen was measured before and after using a spectrophotometer (n=5). The data were analyzed using ANOVA and Tukey's test (p ≤ 0.05). RESULTS The largest ΔE mean values were observed in CT by Coca-Cola (4.38 ± 0.41), in M by coffee (5.95 ± 0.62), in VE (6.02 ± 0.78) and LU (8.61 ± 0.30) by red wine. LU had the largest and strongest overall shade differences (total score: SSC=16.95) and CT the least (SSC=8.74). Overall shade differences of VE (SSC=12.03) and M (SSC=12.48) were statistically indistinguishable. After 14 days, only Coca-Cola caused clinically relevant shade differences in CT (ΔE > 2.7); this was also caused by coffee, Coca-Cola and red wine in M and coffee and red wine in VE and LU. CONCLUSION On average, VE showed fewer shade differences than LU. After 14 days of immersion, shade differences which exceeded the clinical acceptance threshold of ΔE=2.7 were shown by CT in Coca-Cola, by M in coffee, Coca-Cola and red wine, and by VE and LU in coffee and red wine.
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Affiliation(s)
- Martin Gabriel Schürmann
- Department of Prosthodontics and Material Science, University of Leipzig, Liebigstr.12, 04103 Leipzig, Germany
| | - Constanze Olms
- Department of Prosthodontics and Material Science, University of Leipzig, Liebigstr.12, 04103 Leipzig, Germany
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Quek SHQ, Yap AUJ, Rosa V, Tan KBC, Teoh KH. Effect of staining beverages on color and translucency of CAD/CAM composites. J ESTHET RESTOR DENT 2018; 30:E9-E17. [DOI: 10.1111/jerd.12359] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. H. Q. Quek
- Department of Restorative Dentistry; National Dental Centre Singapore; Singapore
| | - A. U. J. Yap
- Faculty of Dentistry; National University of Singapore; Singapore Singapore
- Department of Dentistry; Ng Teng Fong General Hospital, National University Health System; Singapore Singapore
- School of Science and Technology; Singapore University of Social Sciences; Singapore Singapore
| | - V. Rosa
- Discipline of Oral Sciences, Faculty of Dentistry; National University of Singapore; Singapore
| | - K. B. C. Tan
- Discipline of Endodontics, Operative Dentistry and Prosthodontics, Faculty of Dentistry; National University of Singapore; Singapore
| | - K. H. Teoh
- Department of Restorative Dentistry; National Dental Centre Singapore; Singapore
- Discipline of Endodontics, Operative Dentistry and Prosthodontics, Faculty of Dentistry; National University of Singapore; Singapore
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Effect of different beverages on the color stability and microhardness of CAD/CAM hybrid versus feldspathic ceramic blocks: An in-vitro study. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.fdj.2017.07.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Derafshi R, Khorshidi H, Kalantari M, Ghaffarlou I. Effect of mouthrinses on color stability of monolithic zirconia and feldspathic ceramic: an in vitro study. BMC Oral Health 2017; 17:129. [PMID: 29116000 PMCID: PMC5678816 DOI: 10.1186/s12903-017-0419-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 10/15/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Patients susceptible to periodontal disease and dental caries, including those who undergo fixed prosthodontic treatments use chemical plaque control agents. However, these mouthrinses may result in adverse effects such as discoloration of the restorative materials. The aim of this study was to compare the color stability of monolithic zirconia and feldspathic porcelain after immersion in two different mouthrinses: 0.2% Chlorhexidine digluconate (CHX), or Listerine®. Color change was evaluated by color spectrophotometer and according to the Commission Internationale de l'Eclairage (CIELab) system. METHODS We prepared 72 disc-shaped porcelains (n = 36) as follows: Group A consisted of dental direkt cube X2 discs (49% translucency) as the monolithic zirconia and group B consisted of VITA VMK 95 as a feldspathic porcelain. Groups A and B were divided into three subgroups (n = 12 per group). Each subgroup was immersed in one of the following three solutions: distilled water (control), CHX, or Listerine® for 2 min, once per day. We recorded the samples' baseline color values according to the CIELab system by using a color spectrophotometer operated by an experienced operator. Color measurements were subsequently obtained following 7 days of immersion, and after the samples were rinsed with distilled water and allowed to dry. We measured CIE L*, a*, and b*and calculated the color difference (ΔE*ab). All data were analyzed by the Mann-Whitney and Kruskal-Wallis tests. RESULTS Color changes occurred in the experimental groups. The ΔE*ab values were significantly greater in VMK 95 porcelain compared to cube X2 (both p < 0.001) following immersion in CHX and Listerine® mouthrinses. However no significant difference was founded when distilled water was used (p = 0.630). For the two materials, the ΔE values were highest in CHX, followed by the Listerine® and distilled water. CONCLUSION Both monolithic zirconia and feldspathic porcelain were susceptible to color changes following immersion in CHX and Listerine® mouthrinses.
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Affiliation(s)
- Reza Derafshi
- Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hooman Khorshidi
- Department of Periodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohamadhasan Kalantari
- Department of Prosthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ilyad Ghaffarlou
- Department of Prosthodontics, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Effect of 2 Bleaching Agents with a Content of High Concentrated Hydrogen Peroxide on Stained 2 CAD/CAM Blocks and a Nanohybrid Composite Resin: An AFM Evaluation. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6347145. [PMID: 28804719 PMCID: PMC5540473 DOI: 10.1155/2017/6347145] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/01/2017] [Accepted: 06/18/2017] [Indexed: 12/20/2022]
Abstract
The aim of this study was to evaluate color stability of 3 restorative materials, discoloration ability of different solutions, efficacy of 2 office bleaching agents, and surface roughness and topography. Sixty specimens for Clearfil Majesty Esthetic (CME), Lava Ultimate (LU), and Vita Enamic (VE) were prepared. They were immersed into 3 staining solutions for 2 weeks and then they were bleached. According to the measured L⁎, a⁎, and b⁎ parameters described by CIELAB system, color changes (ΔE00), translucency parameters (TP), whiteness index values (W⁎), and changes in closeness to pure white (ΔW⁎) were calculated. Then 3 specimens from each group were scanned with an atomic force microscope for surface analysis. After staining, CME groups and control groups of LU and VE showed clinically acceptable color changes (ΔE00 < 1,8). After bleaching, while a reverse effect on color was observed, VE showed the furthest color values to pure white. There was no statistically significant difference between whiteness index values of LU and CME. LU was the most translucent material during the study and TP values of materials showed minimal differences. Most of the VE groups and a control group of LU showed surface roughness (Ra) values higher than critical value for biofilm accumulation (0,2 μm).
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Baglar S, Keskin E, Orun T, Es A. Discoloration Effects of Traditional Turkish Beverages on different Composite Restoratives. J Contemp Dent Pract 2017; 18:83-93. [PMID: 28174359 DOI: 10.5005/jp-journals-10024-1996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
AIM The aim of this study was to evaluate the discoloring effects of five beverages including, especially, traditional Turkish ones on five commonly used dental composites by using a spectrophotometer device. MATERIALS AND METHODS Five methacrylate-based composites (shade A2) were selected to evaluate their color stability (175 disk samples). Four of them (Filtek Ultimate Universal, Clearfil Majesty ES-2, Tetric EvoCeram, and Cavex Quadrant Universal LC) were nanofilled universal composites for both anterior and posterior restorations, and one (Clearfil Majesty Posterior) was nano-superfilled for posterior restorations. The tested beverages were tamarind syrup, ottoman syrup, turnip juice, pomegranate juice, and distilled water (control). All samples were kept in an incubator at 37°C for 12 days (measured at 3rd, 6th, 12th day intervals) in immersion solutions which was equivalent to 1 year in vivo. Color measurements were made with VITA Easyshade Advance (Vident, Brea, CA) spectrophotometer device according to CIE L*a*b* system. Statistical analysis was performed with analysis of variance and least significant difference test to analyze differences in L*a*b* and ΔE values. RESULTS All materials showed significant discoloration (p < 0.05) when compared with the control group. The highest ΔE was observed in turnip juice, whereas ottoman syrup had the lowest ΔE. Tetric EvoCeram showed the lowest ΔE, while Clearfil Majesty ES-2 showed the highest ΔE. CONCLUSION In all the groups tested, clinically unacceptable ΔE values were obtained. Although color stability of methacrylate-based composites has been widely investigated, this has not been done before with these kinds of immersion solutions. CLINICAL SIGNIFICANCE Potential discoloration might be limited by dietary adjustments based on in vitro evaluations.
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Affiliation(s)
- Serdar Baglar
- Department of Restorative Dentistry, Faculty of Dentistry Kirikkale University, Kirikkale, Turkey
| | - Erol Keskin
- Department of Restorative Dentistry, Faculty of Dentistry Kirikkale University, Kirikkale, Turkey, Phone: +913182244927, e-mail:
| | - Tahir Orun
- Department of Restorative Dentistry, Faculty of Dentistry Kirikkale University, Kirikkale, Turkey
| | - Abdulhamit Es
- Department of Busines Administartion, Faculty of Economics and Administrative Sciences, Abant Izzet Baysal University Bolu, Turkey
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Alharbi A, Ardu S, Bortolotto T, Krejci I. Stain susceptibility of composite and ceramic CAD/CAM blocks versus direct resin composites with different resinous matrices. Odontology 2016; 105:162-169. [PMID: 27456684 DOI: 10.1007/s10266-016-0258-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 06/20/2016] [Indexed: 10/21/2022]
Abstract
To evaluate the stain susceptibility of CAD/CAM blocks and direct composite after long term exposure to various staining agents. 40 disk-shaped samples were fabricated from each of nine materials; six CAD/CAM (Vitablocs Mark II, Paradigm MZ100, Experimental Vita Hybrid Ceramic, Vita Enamic, Experimental Kerr and Lava Ultimate) and three direct composites (Filtek Supreme, Venus Diamond and Filtek Silorane). Samples were randomly divided into five groups (n = 8) according to different staining solutions (distilled water, tea, red wine, coffee and artificial saliva). Initial L*a*b* values were assessed using a calibrated digital spectrophotometer. Specimens were immersed in staining solutions and stored in an incubator at 37 °C for 120 days. L*a*b* values were assessed again and color change (∆E) was calculated as difference between recorded L*a*b* values. ANOVA, and Duncan test were used to identify differences between groups (α = 0.05). Significant differences in ∆E values were detected between materials (p = 0.000). Among all staining solutions, the highest ∆E value was observed with red wine. The new CAD/CAM blocks (Vita Enamic, Vita Hybrid Ceramic and Lava Ultimate) showed the highest resistance to staining compared to the MZ100 composite resin blocks. Filtek Silorane, a direct composite, showed high stain resistance values compared to CAD/CAM materials and other direct composites. Ceramic and composite CAD/CAM blocks had lower staining susceptibility than methacrylate based direct composite. Staining susceptibility of the new resin based CAD/CAM materials Vita Enamic and Lava Ultimate was comparable to feldspathic ceramic blocks (Vitablocs Mark II). Filtek Silorane showed promising results that were comparable to some CAD/CAM blocks.
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Affiliation(s)
- Amal Alharbi
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland. .,Al-Nakheel Medical Center, Riyadh, Saudi Arabia.
| | - Stefano Ardu
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland
| | - Tissiana Bortolotto
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland
| | - Ivo Krejci
- Section of Dental Medicine, Division of Cariology and Endodontology, University of Geneva, 19, rue Barthélemy-Menn, 1205, Geneva, Switzerland
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Uhanov MM, Ryahovsky AN. [Restorative nanomaterials in dentistry]. STOMATOLOGII︠A︡ 2016; 95:73-78. [PMID: 27441319 DOI: 10.17116/stomat201695273-78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- M M Uhanov
- Central Research Institute of Dentistry and Maxillofacial Surgery Ministry of Health of Russian Federation, Moscow, Russia
| | - A N Ryahovsky
- Central Research Institute of Dentistry and Maxillofacial Surgery Ministry of Health of Russian Federation, Moscow, Russia
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Roperto R, Akkus A, Akkus O, Lang L, Sousa-Neto MD, Teich S, Porto TS. Effect of different adhesive strategies on microtensile bond strength of computer aided design/computer aided manufacturing blocks bonded to dentin. Dent Res J (Isfahan) 2016; 13:117-23. [PMID: 27076825 PMCID: PMC4810908 DOI: 10.4103/1735-3327.178196] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background: The aim of this study was to determine the microtensile bond strength (μTBS) of ceramic and composite computer aided design-computer aided manufacturing (CAD-CAM) blocks bonded to dentin using different adhesive strategies. Materials and Methods: In this in vitro study, 30 crowns of sound freshly extracted human molars were sectioned horizontally 3 mm above the cementoenamel junction to produce flat dentin surfaces. Ceramic and composite CAD/CAM blocks, size 14, were sectioned into slices of 3 mm thick. Before bonding, CAD/CAM block surfaces were treated according to the manufacturer's instructions. Groups were created based on the adhesive strategy used: Group 1 (GI) - conventional resin cement + total-etch adhesive system, Group 2 (GII) - conventional resin cement + self-etch adhesive system, and Group 3 (GIII) - self-adhesive resin cement with no adhesive. Bonded specimens were stored in 100% humidity for 24h at 37C, and then sectioned with a slow-speed diamond saw to obtain 1 mm × 1 mm × 6 mm microsticks. Microtensile testing was then conducted using a microtensile tester. μTBS values were expressed in MPa and analyzed by one-way ANOVA with post hoc (Tukey) test at the 5% significance level. Results: Mean values and standard deviations of μTBS (MPa) were 17.68 (±2.71) for GI/ceramic; 17.62 (±3.99) for GI/composite; 13.61 (±6.92) for GII/composite; 12.22 (±4.24) for GII/ceramic; 7.47 (±2.29) for GIII/composite; and 6.48 (±3.10) for GIII/ceramic; ANOVA indicated significant differences among the adhesive modality and block interaction (P < 0.05), and no significant differences among blocks only, except between GI and GII/ceramic. Bond strength of GIII was consistently lower (P < 0.05) than GI and GII groups, regardless the block used. Conclusion: Cementation of CAD/CAM restorations, either composite or ceramic, can be significantly affected by different adhesive strategies used.
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Affiliation(s)
- Renato Roperto
- Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Ohio 44106, USA
| | - Anna Akkus
- Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Ohio 44106, USA
| | - Ozan Akkus
- Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, 10900 Euclid Avenue, Ohio 44106, USA
| | - Lisa Lang
- Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Ohio 44106, USA
| | - Manoel Damiao Sousa-Neto
- Department of Restorative Dentistry, Faculty of Dentistry, University of Sao Paulo (FORP-USP), Ribeirao Preto, SP, 14024-070, Brazil
| | - Sorin Teich
- Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Ohio 44106, USA
| | - Thiago Soares Porto
- Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Ohio 44106, USA
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Acar O, Yilmaz B, Altintas SH, Chandrasekaran I, Johnston WM. Color stainability of CAD/CAM and nanocomposite resin materials. J Prosthet Dent 2016; 115:71-5. [DOI: 10.1016/j.prosdent.2015.06.014] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 06/21/2015] [Accepted: 06/26/2015] [Indexed: 10/23/2022]
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Determining color difference thresholds in denture base acrylic resin. J Prosthet Dent 2015; 114:702-8. [DOI: 10.1016/j.prosdent.2015.06.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Revised: 06/05/2015] [Accepted: 06/10/2015] [Indexed: 11/19/2022]
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Karaokutan I, Yilmaz Savas T, Aykent F, Ozdere E. Color Stability of CAD/CAM Fabricated Inlays after Accelerated Artificial Aging. J Prosthodont 2015; 25:472-7. [PMID: 26372051 DOI: 10.1111/jopr.12353] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/03/2015] [Indexed: 11/30/2022] Open
Affiliation(s)
| | - Tuba Yilmaz Savas
- Department of Prosthodontics; Selcuk University Faculty of Dentistry; Konya Turkey
| | - Filiz Aykent
- Department of Prosthodontics; Selcuk University Faculty of Dentistry; Konya Turkey
| | - Eda Ozdere
- Department of Prosthodontics; Selcuk University Faculty of Dentistry; Konya Turkey
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Lawson NC, Burgess JO. Gloss and Stain Resistance of Ceramic-Polymer CAD/CAM Restorative Blocks. J ESTHET RESTOR DENT 2015; 28 Suppl 1:S40-5. [DOI: 10.1111/jerd.12166] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Nathaniel C. Lawson
- Department of Biomaterials; School of Dentistry, Clinical and Community Sciences; University of Alabama at Birmingham; 1919 7th Avenue South Birmingham AL 35205 USA
| | - John O. Burgess
- Department of Biomaterials; School of Dentistry, Clinical and Community Sciences; University of Alabama at Birmingham; 1919 7th Avenue South Birmingham AL 35205 USA
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