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Kavut İ, Uğur M. The effect of amine-free initiator system and polymerization type on long-term color stability of resin cements: an in-vitro study. BMC Oral Health 2022; 22:426. [PMID: 36153495 PMCID: PMC9508776 DOI: 10.1186/s12903-022-02456-z] [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: 07/01/2022] [Accepted: 09/13/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This in vitro study evaluated the effect of amine-free initiator system and polymerization type on long-term color change of amine-free light-cure and dual-cure resin cements. METHODS Sixty disk-shaped specimens (10 × 1 mm) were prepared from six different amine-free resin cements; NX3 Nexus light-cure (LC) and dual-cure (DC), Variolink Veneer (LC) and Variolink II (DC), Relyx Veneer (LC) and Rely X Ultimate (DC). A feldspathic porcelain specimen (12 × 14 × 0.8 mm) was obtained from a CAD/CAM block (Cerec Blocks; Sirona Dental Systems GmbH, Bensheim, Germany) for color testing. The feldspathic specimen was placed on the resin cement disk and all measurements were performed without cementation. A spectrophotometer was used for color measurements. Specimens were subjected to thermal aging (5 °C and 55 °C; 5000 and 20,000 cycles). Specific color coordinate differences (ΔL, Δa, and Δb) and the total color differences (ΔE00) were calculated after immersion in distilled water for different periods. Normality of data distribution was tested by using the Kolmogorov-Smirnov test. Data were statistically in a model of repeated measures, using multivariate tests and Tukey's multiple comparison tests at a significance level of p < 0.05. RESULTS ∆E00 values of resin cements were influenced by cycle periods, significantly (p < 0.05). The highest ΔE00 values for long term were obtained in the NX3 (DC) (3.49 ± 0.87) and the lowest in the NX3 (LC) (1.41 ± 0.81). NX3 (LC), Variolink (DC), RELY X (LC) resin cements showed clinically acceptable color change after long-term aging (∆E00 < 1.8). CONCLUSION Light-cure resin cements should be preferred for long-term color stability of full ceramic restorations.
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Affiliation(s)
- İdris Kavut
- grid.411703.00000000121646335Department of Prosthodontics, Faculty of Dentistry, Yuzuncu Yil University, Van, Turkey
| | - Mehmet Uğur
- Department of Prosthodontics, Faculty of Dentistry, Yuzuncu Yil University, Van, Turkey.
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Zhou W, Liao ZX, Chen JH, Qiu BY, Zhang Y, Zhang L. Color change of glass ceramic restorations cemented by four types of dual-cured resin luting agents with different initiator systems. Dent Mater J 2022; 41:833-842. [PMID: 35934801 DOI: 10.4012/dmj.2022-044] [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
This study aimed to comprehensively evaluate the effect of dual-cured resin luting agents with different initiator systems on the color stability of glass ceramic restorations by simulating various clinical glass ceramic restorations. Three commonly used shades from each of the two dual-cured resin luting agents with an amine-initiation system or without it were studied. The individual specimens had different translucency and thickness and were artificially aged using a xenon light aging machine. The color was measured before and after aging using a digital spectrophotometer with the difference calculated and analyzed statistically. As results, the amine-free dual-cured resin luting agents were more color stable than those using amine-initiation systems for both uncovered and bonding groups. The translucency and thickness of the ceramic, and shade and type of the resin luting agent significantly affected the color stability of glass ceramic restorations.
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Affiliation(s)
- Wei Zhou
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology & Shaanxi Key Laboratory of Oral Diseases & Department of Prosthodontics, School of Stomatology, the Fourth Military Medical University
| | - Zi-Xuan Liao
- Department of Stomatology, General Hospital of Eastern Theater Command of Chinese People's Liberation Army
| | - Ji-Hua Chen
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology & Shaanxi Key Laboratory of Oral Diseases & Department of Prosthodontics, School of Stomatology, the Fourth Military Medical University
| | - Bi-Ying Qiu
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology & Shaanxi Key Laboratory of Oral Diseases & Department of Prosthodontics, School of Stomatology, the Fourth Military Medical University
| | - Yang Zhang
- Department of Stomatology, The Air Force Hospital from Eastern Theater
| | - Ling Zhang
- National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology & Shaanxi Key Laboratory of Oral Diseases & Department of Prosthodontics, School of Stomatology, the Fourth Military Medical University
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Final Colour of Ultratranslucent Multilayered Zirconia Veneers, Effect of Thickness, and Resin Cement Shade. BIOMED RESEARCH INTERNATIONAL 2022; 2022:2555797. [PMID: 35692584 PMCID: PMC9177338 DOI: 10.1155/2022/2555797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 03/31/2022] [Accepted: 05/10/2022] [Indexed: 11/17/2022]
Abstract
Background Aesthetic restorations should be able to mimic the natural colour depth of teeth, affected by several factors including material properties. There is a lack of information regarding the effect of cement shade and material thickness on the final colour of ultratranslucent multilayered zirconia veneers. Objectives This study evaluated the effect of ceramic thickness and resin cement shade on the final colour of different layers of ultratranslucent multilayered (UTML) zirconia veneers. Methods This in vitro study produced 90 rectangular-shaped specimens with nonsintered Katana UTML monolithic zirconia (Kuraray Noritake Dental, Tokyo, Japan), shade A1 blocks. Ceramic samples were prepared in two groups of 0.7 mm and 0.5 mm thicknesses, 45 of each (a: 8 × 11 × 0.5 mm; b: 8 × 11 × 0.7 mm). Specimens of each thickness were further divided into 5 groups: universal, clear, brown, white, and opaque (n = 9). Each adhesive resin cement (Panavia V5) was applied between the ceramic samples and composite substrate. The colour values were measured using a spectrophotometer in baseline and after resin cement application according to the CIELab system. For all samples, ΔE00 values were obtained. Data were evaluated with SPSS 25 using the three-way ANOVA test (p < 0.05). Results The factors of cement shade, ceramic thickness, and ceramic layers have statistically significant effect on ΔE00 values (p < 0.001). The results showed lower ΔE00 values with thicker ceramic veneers. Tukey test results showed that the opaque and brown shade had a significantly greater ΔE00 values comparing to universal (p = 0.004), clear, and white shades (p < 0.001). Conclusion The colour change was greater in lower ceramic thickness. Different shades of resin cement and layers of UTML zirconia differently affected the final colour.
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Comba A, Paolone G, Baldi A, Vichi A, Goracci C, Bertozzi G, Scotti N. Effects of Substrate and Cement Shade on the Translucency and Color of CAD/CAM Lithium-Disilicate and Zirconia Ceramic Materials. Polymers (Basel) 2022; 14:1778. [PMID: 35566944 PMCID: PMC9101095 DOI: 10.3390/polym14091778] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/12/2022] [Accepted: 04/12/2022] [Indexed: 01/27/2023] Open
Abstract
The aim of this in vitro study was to evaluate the effects of substrate and cement shades on the translucency and color of lithium-disilicate and zirconia CAD/CAM materials. Two light-cured resin cements (RelyX Veneer Cement; 3M; Choice 2 Veneer Cement; Bisco Dental) with a standardized thickness (0.1 mm) were tested in combination with two different monolithic CAD/CAM materials (E-Max CAD (LI2SI2O5); Ivoclar Vivadent; Katana (ZrO2); Kuraray-Noritake Dental) on two different colored composite substrates used as a dentin (Filtek Supreme XTE; 3M); for a total of 12 combinations (n = 10). The specimens’ color was measured with a spectrophotometer (Spectroshade; MHT). Measurements were taken using the CIELAB color coordinate system (L*a*b*) against black and white backgrounds. L*a*b* values were statistically analyzed for the variables Substrate, Ceramic, and Cement by applying a Three-Way ANOVA followed by the Tukey Test for post-hoc comparison (p < 0.05). Translucency Parameter (TP) and Constant Ratio (CR) were assessed to evaluate translucency; acceptability and perceptibility thresholds (ΔE00 1.8 and 0.8) were used. Statistically significant influence was found for factors ceramic material, cement shade, and substrate color (p < 0.05). Unacceptable color differences were reported for Li2Si2O5. Opacity was significantly higher when white opaque cement shade was employed. Ceramic type and cement shade significantly influenced L*a*b* color coordinates. The final translucency and color of ceramic restorations can, therefore, be influenced by ceramic material, cement shade, and substrate color.
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Affiliation(s)
- Allegra Comba
- Department of Surgical Sciences, Dental School Lingotto, University of Turin, 10126 Turin, Italy; (A.C.); (A.B.); (G.B.)
| | - Gaetano Paolone
- Department of Dentistry, IRCCS San Raffaele Hospital and Dental School, Vita Salute University, 20132 Milan, Italy;
| | - Andrea Baldi
- Department of Surgical Sciences, Dental School Lingotto, University of Turin, 10126 Turin, Italy; (A.C.); (A.B.); (G.B.)
| | - Alessandro Vichi
- Dental Academy, Faculty of Science and Health, University of Portsmouth, William Beatty Building, Hampshire Terrace, Portsmouth PO1 2QG, UK;
| | - Cecilia Goracci
- Department of Medical Biotechnologies, University of Siena, Policlinico Le Scotte, 53100 Siena, Italy;
| | - Giulia Bertozzi
- Department of Surgical Sciences, Dental School Lingotto, University of Turin, 10126 Turin, Italy; (A.C.); (A.B.); (G.B.)
| | - Nicola Scotti
- Department of Surgical Sciences, Dental School Lingotto, University of Turin, 10126 Turin, Italy; (A.C.); (A.B.); (G.B.)
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Miura S, Tsukada S, Fujita T, Isogai T, Teshigawara D, Saito-Murakami K, Asami K, Fujisawa M. Effects of abutment tooth and luting agent colors on final color of high-translucent zirconia crowns. J Prosthodont Res 2021; 66:243-249. [PMID: 34321374 DOI: 10.2186/jpr.jpr_d_21_00025] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE This study aimed to evaluate the effects of the tooth portion evaluated and the colors of the abutment tooth and resin luting agent on the final color of monolithic zirconia crowns. METHODS Monolithic zirconia crowns were fabricated for left maxillary central incisors using two shades (A2 and A3) of highly translucent monolithic zirconia disks. A model of the abutment tooth was fabricated using resin core materials (white: W; dentin: D). The color of the crowns was measured with try-in pastes (clear: C; brown: B) as a resin-luting agent substitute. The measurement was performed after placing the crown on the model with the attached abutment tooth with try-in paste. The color of three labial portions (cervical, body, and incisal) was evaluated using a dental spectrophotometer. The color difference (ΔE) between the CIELab values of the zirconia disks and the final me asurement of zirconia crowns was calculated. RESULTS The ΔE between the crown of the A2 shade and the zirconia disk of the A2 shade had the highest ΔE value in the body portion with W-B (ΔE=3.92). Similarly, the A3 shade had the highest ΔE value in the cervical portion, with W-B (ΔE=4.27). The results of three-way ANOVA showed that the ΔE values were influenced by the tooth portion evaluated and the color of the abutment tooth. CONCLUSIONS The final color of the monolithic zirconia crowns was significantly in fluenced by the tooth portion evaluated and the color of the abutment tooth.
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Affiliation(s)
- Shoko Miura
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
| | - Shohei Tsukada
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
| | - Takafumi Fujita
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
| | - Tomonori Isogai
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
| | - Daisuke Teshigawara
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
| | - Konatsu Saito-Murakami
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
| | - Kazuya Asami
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
| | - Masanori Fujisawa
- Division of Fixed Prosthodontics, Department of Restorative & Biomaterials Sciences, Meikai University School of Dentistry, Saitama
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Passos Rocha E, Bruniera Anchieta R, Alexandre da Cunha Melo R, Henrique Dos Santos P, Gonçalves Assunção W, Isquierdo de Souza F, Paula Martini A. Clinical outcomes of minimally invasive ceramic restorations executed by dentists with different levels of experience. Blind and prospective clinical study. J Prosthodont Res 2020; 65:191-197. [PMID: 32938872 DOI: 10.2186/jpr.jpor_2019_483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE To evaluate the clinical outcomes of minimally invasive ceramic restorations executed by dentists with different levels of experience. METHODS Sixteen professionals were divided into 4 groups according to their experience levels. These included G1: up to 2 years since graduation, G2: 2-5 years, G3: 5-10 years, and G4: more than 10 years. All professionals were trained to follow the same standardized clinical protocol, but were unaware of the research objectives. A single evaluator followed the clinical treatments and recorded the complications and errors that occurred during the execution of the protocol. Ninety-one full crowns, 137 veneers, and 46 no-preparation veneers were prepared from lithium disilicate. Follow-ups were performed immediately and at 30, 180, and 360 days after the cementation and the evaluation based on the modified United States Public Health Service criteria. Ceramic chipping/fracture and debonding were considered failures. Fractures were replicated and submitted to fractographic analysis. RESULTS The highest number of failures were found in G1 followed by G3 and the lowest number of failures were found in G2. The level of success was 94% after 360 days. The fractographic analysis demonstrated the external surface of restorations as the critical area and suggested that failures might occur due to noncompliance with the clinical protocol. There was no correlation between professional experience and number of failures or patient satisfaction. CONCLUSIONS Professional experience was not a decisive for patient satisfaction and success of minimally invasive ceramic restorations, and noncompliance with the clinical protocol was associated with early ceramic restoration failures.
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Affiliation(s)
- Eduardo Passos Rocha
- Unesp - Univ Estadual Paulista, Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Araçatuba, SP
| | - Rodolfo Bruniera Anchieta
- Unesp - Univ Estadual Paulista, Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Araçatuba, SP.,Centro Universitário do Norte Paulista, UNORP, Unipos, São José do Rio Preto, São Paulo
| | - Regis Alexandre da Cunha Melo
- Unesp - Univ Estadual Paulista, Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Araçatuba, SP
| | - Paulo Henrique Dos Santos
- Unesp - Univ Estadual Paulista, Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Araçatuba, SP
| | - Wirley Gonçalves Assunção
- Unesp - Univ Estadual Paulista, Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Araçatuba, SP
| | - Fernando Isquierdo de Souza
- Unesp - Univ Estadual Paulista, Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Araçatuba, SP
| | - Ana Paula Martini
- Unesp - Univ Estadual Paulista, Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Araçatuba, SP
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Carrabba M, Vichi A, Tozzi G, Louca C, Ferrari M. Cement opacity and color as influencing factors on the final shade of metal-free ceramic restorations. J ESTHET RESTOR DENT 2020; 34:423-429. [PMID: 32282998 DOI: 10.1111/jerd.12587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 03/10/2020] [Accepted: 03/26/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To investigate the influence of opacity and color of luting cements on the final shade of metal-free restorations. MATERIALS AND METHODS Five resin cement colors in combination with four different thicknesses of CAD/CAM ceramic materials were tested, and a composite substrate was used as dentin color reference (n = 3). Specimen color was measured with a spectrophotometer equipped with an integrating sphere before and after cementation (CIELAB). Cement and ceramic color and opacity (TP) were assessed by measuring the tested ceramic thickness as a 1-mm thick disk for each of the cement shades. The differences in color were evaluated (ΔE00 ). Data were statistically analyzed by a Two-Way ANOVA followed by the Tukey Test for post-hoc comparison (P < .05) and multiple comparison Pearson's test (P < .05); the acceptability and perceptibility threshold were evaluated. RESULTS Statistically significant influence was found for factors ceramic thickness and cement shade (P < .001). Perceptible and unacceptable color changes were induced on the final restoration by resin cements (ranging from ΔE00 = 0.69 ± 0.54 to ΔE00 = 5.53 ± 0.46), the correlation between factors became strong (r2 > 0.6) in case of mismatch between color and translucency of cement and ceramic. Only the clear shade in combination with the thickest ceramic, resulted in an imperceptible color change (ΔE00 = 0.69 ± 0.54). CONCLUSIONS The final shade of ceramic restorations can be influenced by resin cements; the magnitude of influence is related to the cement optical properties. CLINICAL SIGNIFICANCE In order to influence the final shade of a ceramic restoration, a cement more opaque than the restorative material should be used. Conversely, in the case of a fitting shade of the restoration, a cement more translucent than the restoration should be used to avoid undesired changes.
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Affiliation(s)
- Michele Carrabba
- Department of Medical Biotechnologies, Division of Fixed Prosthodontic, University of Siena, Siena, Italy
| | | | - Gianluca Tozzi
- Zeiss Global Centre, School of Engineering, University of Portsmouth, Portsmouth, UK
| | - Chris Louca
- Dental Academy, University of Portsmouth, Portsmouth, UK
| | - Marco Ferrari
- School of Dentistry, Department of Medical Biotechnologies, University of Siena, Siena, Italy
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Ayash G, Osman E, Segaan L, Rayyan M, Joukhadar C. Influence of resin cement shade on the color and translucency of zirconia crowns. J Clin Exp Dent 2020; 12:e257-e263. [PMID: 32190196 PMCID: PMC7071530 DOI: 10.4317/jced.56425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 01/08/2020] [Indexed: 02/04/2023] Open
Abstract
Background Zirconia crowns are highly attractive for clinicians, although have poor translucency when used as single restorations, in addition to unknown effect of resin cement shade on final cemented crown shade. This study aimed to assess effect of resin cement opacity on color replication potential of different zirconia frameworks with target tooth color, in addition to different zirconia crowns translucency evaluation.
Material and Methods Twenty-four zirconia crown restorations were fabricated to restore single central maxillary incisor for 8 patients, divided into 3 groups according to color and type of zirconia used (white Zr core, colored Zr core and monolithic HT Zrcowns). Each group was further subdivided into 2 subgroups according to resin cement shade. Using Easyshade spectrophotometer, Delta E color difference was calculated between each crown parameters using 2 different resin luting cement shades and adjacent target tooth. Translucency parameters (TP) were tested for finished crowns. ΔEs obtained were assessed based on ΔEof 1.6 which represented color difference that could not be detected by human eye and considered clinically acceptable.
Results No statistically significant values were found between subgroups related to different resin cement shade. Translucency parameters showed statistically significant different values. Monolithic crowns showed highest translucency parameters followed by Zr crowns on white cores then Zr crowns on colored cores.
Conclusions Resin cement shade didn’t affect final color perception. Monolithic high translucency crowns usage gained advantages of high translucency and delamination prevention. Zirconia crowns could be cemented by opaque or transparent cement without affecting final color. Key words:Zirconia, resin cement, monolithic, translucency, spectrophotometer, Delta E.
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Affiliation(s)
- Ghada Ayash
- Department of Oral Rehabilitation Sciences, Faculty of Dentistry, Beirut Arab University
| | - Essam Osman
- Department of Oral Rehabilitation Sciences, Faculty of Dentistry, Beirut Arab University
| | - Lucette Segaan
- Department of Oral Rehabilitation Sciences, Faculty of Dentistry, Beirut Arab University
| | - Mohmmad Rayyan
- Department of Oral Rehabilitation Sciences, Faculty of Dentistry, Beirut Arab University
| | - Christelle Joukhadar
- Clinical Instructor Department of Oral Rehabilitation Sciences, Faculty of Dentistry, Beirut Arab University
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Lebedenko IY, Dyakonenko EE, Sakhabieva DA, Llaka E. [Translucent zirconia ceramics for fabrication monolithic restorations: review. Part 2]. STOMATOLOGIIA 2020; 99:101-106. [PMID: 33267553 DOI: 10.17116/stomat202099061101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Translucent zirconia ceramics for fabrication monolithic restorations is a ceramic material of latest generation. The objective of this literature review is discussing the ways to increase the transparency of zirconia, novel technologies of its manufacturing (part 1) and laboratory procedures for fabrication translucent zirconia restorations, factors affecting the transparency, optical and physico-mechanical properties of the material, as well as indications for its use (part 2).
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Affiliation(s)
- I Yu Lebedenko
- Central Research Institute of Dental and Maxillofacial Surgery, Moscow, Russia
- Peoples' Friendship University of Russia, Moscow, Russia
| | - E E Dyakonenko
- Central Research Institute of Dental and Maxillofacial Surgery, Moscow, Russia
| | - D A Sakhabieva
- Peoples' Friendship University of Russia, Moscow, Russia
| | - E Llaka
- Peoples' Friendship University of Russia, Moscow, Russia
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The effect of restoration thickness and resin cement shade on the color and translucency of a high-translucency monolithic zirconia. J Prosthet Dent 2020; 123:149-154. [DOI: 10.1016/j.prosdent.2018.11.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 11/08/2018] [Accepted: 11/08/2018] [Indexed: 11/18/2022]
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Clinical factors affecting the translucency of monolithic Y-TZP ceramics. Odontology 2019; 108:526-531. [DOI: 10.1007/s10266-019-00446-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/05/2019] [Indexed: 10/26/2022]
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Pissaia JF, Guanaes BKDA, Kintopp CCDA, Correr GM, da Cunha LF, Gonzaga CC. Color stability of ceramic veneers as a function of resin cement curing mode and shade: 3-year follow-up. PLoS One 2019; 14:e0219183. [PMID: 31260461 PMCID: PMC6602287 DOI: 10.1371/journal.pone.0219183] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 06/18/2019] [Indexed: 12/02/2022] Open
Abstract
The influence of curing mode and shade of resin cements on the color stability of minimum-thickness ceramic veneers after a three-year storage time in distilled water was evaluated in this study. Ninety-six 0.5-mm-thick feldspathic ceramic veneers (Mark II) were luted onto resin composite substrates (Filtek Z350 XT, shade A2E) with two light-cured (NX3 Light-cure and AllCem Veneer) and dual-cured resin cements (NX3 dual-cure and AllCem) in various shades. The specimens were stored in distilled water at 37°C. Color measurements were performed with a spectrophotometer at the following times: 1h and 24h; 7, 30, and 180 days; and 1, 2, and 3 years. Data for color difference (ΔEab) light-cured and dual-cured resin cements were analyzed by two-way ANOVA with repeated measures and Tukey’s test (α = 0.05). For the light-cured cements, the ΔEab values were as follows: NX3-Yellow (2.37±1.35) = ACV-A1 (2.40±1.21) = ACV-Trans (2.52±1.46) = ACV-E-Bleach M (2.56±1.42) = NX3-White (2.69±1.49) = NX3-Clear (2.98±1.68). The lowest ΔE values were found for 1 h (0.61±0.36)a, followed by 24 h (1.15±0.55)b and 30 days (2.48±1.11)c. One year, 180 days, and 2 and 3 years presented higher ΔEab values (3.34±0.94, 3.52±1.04, 3.52±0.95 and 3.55±1.14, respectively)d. For the dual-cured cements, the ΔEab values varied as follows: NX3-Clear (2.32±1.24)a = NX3-Yellow (2.37±1.32)a = NX3-White (2.76±1.43)a < AC-Trans (3.77±1.91)b = AC-A3 (4.13±2.11)b < AC-A1 (5.38±2.92)c. Considering time, the lowest ΔEab values were found for 1 h (0.48±0.25)a, followed by 24 h (2.13 ±0.83)b, 30 days (3.54±1.31)c, and 180 days (3,70±1.73)c. The follow-up times of 1 (4.43±2.15)d, 2 (5.02±1.74)e, and 3 years (4.90±2.12)e presented higher ΔEab values. This study demonstrated that light-cured resin cements were less susceptible to color change than dual-cured cements. After 2 years of follow-up, all cements presented ΔEab values above the acceptability threshold.
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Affiliation(s)
- Janes Francio Pissaia
- School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
| | | | | | - Gisele Maria Correr
- School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
| | | | - Carla Castiglia Gonzaga
- School of Health Sciences, Graduate Program in Dentistry, Universidade Positivo, Curitiba, PR, Brazil
- * E-mail:
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Tabatabaei MH, Matinfard F, Omrani LR, Mahounak FS, Ahmadi E. Evaluation of the Final Color of Ceramic Veneers with Different Self-Adhesive Resin Cements. Open Dent J 2019. [DOI: 10.2174/1874210601913010203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background:
Proper selection of cement plays an effective role in the success of ceramic laminate veneers. The cement can affect the final color by changing the optical properties of the ceramic.
Objective:
Due to the ease of clinical use of the seventh generation of cement (Self-Adhesive Cement), this study aimed to evaluate the effect of this type of cement on the final color of Ceramic Veneers (CV).
Methods:
In this study, 21 IPS e.max ceramic disks (8mm× 0.7 mm) were used. They were divided into 3 groups of 7, depending on the type of cement. (Choice 2, RelyX U200, Speed Cem). In the first stage, ceramic disks were set on the facial surface of bovine’s teeth by bonding agents and the color properties were analyzed by spectrophotometer. In the next stage, specimens were cemented on the prepared surfaces according to the manufacturer’s instructions and their color was evaluated subsequently.
Results:
Results were analyzed by repeated measures two-way ANOVA and TAMHANE post hoc methods (P < 0.05). Results showed that cement influences the color of the ceramic laminate. ∆E values were reported to be higher than the critical point after cementation (∆E > 2.69).
Conclusion:
There was no significant difference between the effects of three cement types on the final color of the ceramic veneers.
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Daneshpooy M, Pournaghi Azar F, Alizade Oskoee P, Bahari M, Asdagh S, Khosravani SR. Color agreement between try-in paste and resin cement: Effect of thickness and regions of ultra-translucent multilayered zirconia veneers. J Dent Res Dent Clin Dent Prospects 2019; 13:61-67. [PMID: 31217921 PMCID: PMC6571517 DOI: 10.15171/joddd.2019.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 02/05/2019] [Indexed: 11/18/2022] Open
Abstract
Background. The current study aimed at identifying the color agreement between try-in pastes and the respective resin cements and investigated the effect of thickness and regions of Ultra-Translucent Multilayered Zirconia Veneers.
Methods. A total of 90 cubic zirconia discs were prepared at two different thicknesses (0.5 mm and 0.7 mm) (n=45) in five groups in terms of the shade of the try-in paste and resin cement as follows: Universal, Clear, Brown, White and Opaque. Try-in paste and the respective resin cement were applied between the specimens and composite substrate, respectively, and colorimetric evaluation was carried out using CIE-Lab system. For each specimen, ΔE between the try-in paste and cement was calculated. Data were analyzed with SPSS 17 using Multifactor ANOVA (P<0.05).
Results. Multifactor ANOVA results showed that ΔE values were significantly affected by the resin cement shade and the thickness of ceramic veneer (P<0.05). The results showed better shade agreement between the try-in paste and the respective resin cement with thicker ceramic veneers. The results of Tukey HSD revealed that ΔE values for the Clear, Universal and Brown shades were less than those of the White and Opaque shades. Lighter shades exhibited better agreement between the try-in paste and the respective resin cement.
Conclusion. Perceptible color difference was found between the try-in pastes and the respective resin cement in most colors investigated. Although, the agreement of the try-in pastes and the respective resin cement was affected by the thickness of zirconia veneers, the different regions of multilayered ultra-translucent zirconia ceramic showed no significant effect.
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Affiliation(s)
- Mehdi Daneshpooy
- Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Pournaghi Azar
- Dental and Periodontal Research Center, Department of Operative Dentistry, Faculty of Dentistry, Tabriz university of Medical Sciences, Tabriz, Iran
| | - Parnian Alizade Oskoee
- Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahmoud Bahari
- Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeede Asdagh
- Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Reza Khosravani
- Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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15
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SILAMI FDJ, PRATAVIEIRA S, NOGUEIRA MS, BARRETT AA, SINHORETI MAC, GERALDELI S, PIRES-DE-SOUZA FDCP. Quantitative image of fluorescence of ceramic and resin-cement veneers. Braz Oral Res 2019; 33:e0088. [DOI: 10.1590/1807-3107bor-2019.vol33.0088] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 08/02/2019] [Indexed: 11/22/2022] Open
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16
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Thilagar P, Sampathkumar J, Krishnan CS, Ramakrishnan H, Ramasubramanian H, Azhagarasan NS. Comparative Evaluation of the Masking Ability of Lithium Disilicate Ceramic with Different Core Thickness on the Shade Match of Indirect Restorations over Metallic Substrate: An In vitro Study. Contemp Clin Dent 2019; 10:56-63. [PMID: 32015643 PMCID: PMC6974991 DOI: 10.4103/ccd.ccd_301_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Purpose The purpose of this in vitro study was to comparatively evaluate the masking ability of lithium disilicate ceramic with different core thickness on the shade match of indirect restorations over metallic substrate. Materials and Methods A total of 30 heat pressed lithium disilicate ceramic discs of low translucency were fabricated with diameter 10mm and thickness of 1 mm, 1.3 mm and 1.6mm with each thickness consisting of 10 samples to be used in the study. Thirty Ni-Cr metal discs of diameter 10mm were used to simulate metallic substrates .The colour difference of the lithium disilicate ceramic disc before and after cementation were measured using CIE LAB system. Results The mean colour difference (ΔE) of Group I,Group II, Group III before cementation with the Ni-Cr metal discs was 17.32,13.01 and 11.73 respectively. The mean colour difference (ΔE) of Group I,Group II, Group III after cementation with the Ni-Cr metal discs was 16.32,12.10, 11.05 respectively. Conclusion The mean colour difference of the three groups were found to be more than the clinically acceptable perceptibility threshold (ΔE < 3.3) indicative of reduced masking ability of all the three groups of ceramic discs over metallic substrate used in this study.
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Affiliation(s)
- Priyadarshini Thilagar
- Affliated to the Tamil Nadu Dr. M.G.R Medical University, Ragas Dental College and Hospital, Uthandi, Chennai, Tamil Nadu, India
| | - Jayakrishnakumar Sampathkumar
- Affliated to the Tamil Nadu Dr. M.G.R Medical University, Ragas Dental College and Hospital, Uthandi, Chennai, Tamil Nadu, India
| | - Chitra Shankar Krishnan
- Affliated to the Tamil Nadu Dr. M.G.R Medical University, Ragas Dental College and Hospital, Uthandi, Chennai, Tamil Nadu, India
| | - Hariharan Ramakrishnan
- Affliated to the Tamil Nadu Dr. M.G.R Medical University, Ragas Dental College and Hospital, Uthandi, Chennai, Tamil Nadu, India
| | - Hariharan Ramasubramanian
- Affliated to the Tamil Nadu Dr. M.G.R Medical University, Ragas Dental College and Hospital, Uthandi, Chennai, Tamil Nadu, India
| | - N S Azhagarasan
- Department of Prosthodontics and Implantology, Ragas Dental College and Hospital, Uthandi, Chennai, Tamil Nadu, India
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Perroni AP, Kaizer MR, Della Bona A, Moraes RR, Boscato N. Influence of light-cured luting agents and associated factors on the color of ceramic laminate veneers: A systematic review of in vitro studies. Dent Mater 2018; 34:1610-1624. [DOI: 10.1016/j.dental.2018.08.298] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/28/2018] [Indexed: 11/25/2022]
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18
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Tabatabaian F, Bakhshaei D, Namdari M. Effect of Resin Cement Brand on the Color of Zirconia‐Based Restorations. J Prosthodont 2018; 29:350-355. [DOI: 10.1111/jopr.12953] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/12/2018] [Indexed: 11/30/2022] Open
Affiliation(s)
- Farhad Tabatabaian
- Dental Research Center, Research Institute of Dental Sciences, School of DentistryShahid Beheshti University of Medical Sciences Tehran Iran
- Department of Prosthodontics, School of DentistryShahid Beheshti University of Medical Sciences Tehran Iran
| | | | - Mahshid Namdari
- Department of Community Oral Health, School of DentistryShahid Beheshti University of Medical Sciences Tehran Iran
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19
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BARBON FJ, MORAES RR, CALZA JV, PERRONI AP, SPAZZIN AO, BOSCATO N. Inorganic filler content of resin-based luting agents and the color of ceramic veneers. Braz Oral Res 2018; 32:e49. [DOI: 10.1590/1807-3107bor-2018.vol32.0049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/25/2018] [Indexed: 11/22/2022] Open
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20
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Tabatabaian F. Color Aspect of Monolithic Zirconia Restorations: A Review of the Literature. J Prosthodont 2018; 28:276-287. [DOI: 10.1111/jopr.12906] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2018] [Indexed: 02/02/2023] Open
Affiliation(s)
- Farhad Tabatabaian
- Department of Prosthodontics, School of Dentistry; Shahid Beheshti University of Medical Sciences; Tehran Iran
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Prieto LT, Pimenta de Araújo CT, Araujo Pierote JJ, Salles de Oliveira DCR, Coppini EK, Sartini Paulillo LAM. Evaluation of degree of conversion and the effect of thermal aging on the color stability of resin cements and flowable composite. JOURNAL OF CONSERVATIVE DENTISTRY : JCD 2018; 21:47-51. [PMID: 29628647 PMCID: PMC5852935 DOI: 10.4103/jcd.jcd_128_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Purpose: The aim of this in vitro study was to evaluate the color stability and degree of conversion (DC) of dual-cure and light-cure cements and flowable composites after thermal aging. Materials and Methods: A total of 50 human incisors were prepared and divided into six groups (n = 10). Veneers were fabricated using IPS Empress Direct composite resin were bonded with three types of luting agents: Light-cured, conventional dual, and flowable composite according to the manufacturer's instructions. The groups were as follows: Filtek Z350XT Flow/Single Bond 2, RelyX ARC/Single Bond 2, RelyX Veneer/Single Bond 2, Tetric N-Flow/Tetric N-Bond, and Variolink II/Tetric N-Bond. Commission Internationale de l'Éclairage L*, a* and b* color coordinates were measured 24 h after cementation procedure with a color spectrophotometer and reevaluated after 10,000 thermal cycles. To evaluate the DC 50 specimens (n = 10) of each resin material were obtained and Fourier transform infrared spectroscopy was used to evaluate the absorption spectra. Statistical analysis was performed with one-way ANOVA and Tukey's test (α = 0.05). Results: No statistically significant differences in ΔE* occurred after aging. The greatest change in lightness occurred in the Variolink II resin cement. Changes in red–green hue were very small for the same cement and largest in the Tetric N-Flow flowable resin composite, while the greatest change in blue–yellow hue was a yellowing of the RelyX ARC luting cement. RelyX ARC exhibited the highest DC, and there were no statistically significant differences in DC among the other cements. Conclusions: Resin-based luting agent might affect the final of ceramic veneer restorations. The thermal aging affected the final color of the evaluated materials, and these were regarded as clinically unacceptable (ΔE >3.3).
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Affiliation(s)
- Lúcia Trazzi Prieto
- Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Sao Paulo, Brazil
| | - Cíntia Tereza Pimenta de Araújo
- Department of Dentistry, Faculty of Sciences of Health, Federal University of Jequitinhonha and Mucuri Valley, Diamantina, MG, Brazil
| | - Josué Junior Araujo Pierote
- Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Sao Paulo, Brazil
| | | | - Erick Kamiya Coppini
- Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Sao Paulo, Brazil
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22
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Cengiz E, Kurtulmus-Yilmaz S, Karakaya I, Aktore H. Color difference of composite resins after cementation with different shades of resin luting cement. Odontology 2017; 106:181-186. [DOI: 10.1007/s10266-017-0311-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 06/05/2017] [Indexed: 10/19/2022]
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23
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Hernandes DKL, Arrais CAG, Lima ED, Cesar PF, Rodrigues JA. Influence of resin cement shade on the color and translucency of ceramic veneers. J Appl Oral Sci 2016; 24:391-6. [PMID: 27556211 PMCID: PMC4990369 DOI: 10.1590/1678-775720150550] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 04/16/2016] [Indexed: 12/01/2022] Open
Abstract
Objective This in vitro study evaluated the effect of two different shades of resin cement (RC- A1 and A3) layer on color change, translucency parameter (TP), and chroma of low (LT) and high (HT) translucent reinforced lithium disilicate ceramic laminates. Material and Methods One dual-cured RC (Variolink II, A1- and A3-shade, Ivoclar Vivadent) was applied to 1-mm thick ceramic discs to create thin RC films (100 µm thick) under the ceramics. The RC was exposed to light from a LED curing unit. Color change (ΔE) of ceramic discs was measured according to CIEL*a*b* system with a standard illuminant D65 in reflectance mode in a spectrophotometer, operating in the light range of 360-740 nm, equipped with an integrating sphere. The color difference between black (B) and white (W) background readings was used for TP analysis, while chroma was calculated by the formula C*ab=(a*2+b*2)½. ΔE of 3.3 was set as the threshold of clinically unacceptable. The results were evaluated by two-way ANOVA followed by Tukey's post hoc test. Results HT ceramics showed higher ΔE and higher TP than LT ceramics. A3-shade RC promoted higher ΔE than A1-shade cement, regardless of the ceramic translucency. No significant difference in TP was noted between ceramic discs with A1- and those with A3-shade cement. Ceramic with underlying RC showed lower TP than discs without RC. HT ceramics showed lower chroma than LT ceramics, regardless of the resin cement shade. The presence of A3-shade RC resulted in higher chroma than the presence of A1-shade RC. Conclusions Darker underlying RC layer promoted more pronounced changes in ceramic translucency, chroma, and shade of high translucent ceramic veneers. These differences may not be clinically differentiable.
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Affiliation(s)
| | | | - Erick de Lima
- - Universidade de São Paulo, Faculdade de Odontologia, Departamento de Materiais Odontológicos, São Paulo, SP, Brasil
| | - Paulo Francisco Cesar
- - Universidade de São Paulo, Faculdade de Odontologia, Departamento de Materiais Odontológicos, São Paulo, SP, Brasil
| | - José Augusto Rodrigues
- - Universidade de Guarulhos, Departamento de Odontologia Restauradora, Guarulhos, SP, Brasil
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24
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Pires LA, Novais PMR, Araújo VD, Pegoraro LF. Effects of the type and thickness of ceramic, substrate, and cement on the optical color of a lithium disilicate ceramic. J Prosthet Dent 2016; 117:144-149. [PMID: 27460330 DOI: 10.1016/j.prosdent.2016.04.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 04/07/2016] [Accepted: 04/07/2016] [Indexed: 10/21/2022]
Abstract
STATEMENT OF PROBLEM Reproducing the characteristics of natural teeth in ceramic crowns remains a complex and difficult process. PURPOSE The purpose of this in vitro study was to evaluate the effect of the substrate, cement, type, and thickness of the ceramic on the resulting color of a lithium disilicate ceramic. MATERIAL AND METHODS Forty ceramic disks were prepared from IPS e.max Press LT (low translucency) and HO (high opacity) in 2 different thicknesses (1.5 and 2 mm). The LT groups were composed of monolithic ceramic disks, and the HO groups were composed of disks fabricated with a 0.5-mm thickness combined with a 1- or 1.5-mm veneering ceramic thickness. Disks made of composite resin (R) and alloy (A) were used as substrate structures. The resin cement used was Variolink II. Color was measured with a spectrophotometer and expressed in CIELAB coordinates. Color differences (ΔE) were calculated. The data were analyzed with ANOVA and the Tukey HSD test (α=.05). RESULTS When the ΔE of ceramic disks with both substrates, with and without cement, were compared, the lowest value (3) was obtained for ceramic HO with a 2-mm thickness/alloy substrate/without cement; the highest value (10) was obtained for ceramic LT with a1.5-mm thickness/alloy substrate/with cement. This difference was statistically significant. When the effect of cement on the ΔE of ceramics in both substrates was compared, the lowest value (1.1) occurred with ceramic HO with a 1.5-mm thickness/resin substrate, and the highest was observed for ceramic LT with a 1.5-mm thickness/alloy substrate (6.4). This difference was statistically significant. CONCLUSIONS The substrate color, type and thickness of ceramic, and presence of the cement significantly influenced the resulting optical color. The ΔE values of cemented HO ceramics were lower than that of the LT ceramic.
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Affiliation(s)
- Laís A Pires
- Doctoral student, Department of Prosthodontics, University of São Paulo, Bauru School of Dentistry, São Paulo, Brazil.
| | - Pollyanna M R Novais
- Professor, Faculty of Professional Masters in Dentistry, University of Fortaleza, Ceará, Brazil
| | - Vinícius D Araújo
- Professor, University Federal Rural of Pernambuco, Academic Unit of the Cabo of Santo Agostinho, Pernambuco, Brazil
| | - Luiz F Pegoraro
- Professor, Department of Prosthodontics, University of São Paulo, Bauru School of Dentistry, São Paulo, Brazil
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25
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Montero J, Gómez‐Polo C. Effect of ceramic thickness and cement shade on the final shade after bonding using the 3D master system: a laboratory study. Clin Exp Dent Res 2016; 2:57-64. [PMID: 29744150 PMCID: PMC5839194 DOI: 10.1002/cre2.22] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 01/19/2016] [Accepted: 01/26/2016] [Indexed: 11/23/2022] Open
Abstract
The final color of a ceramic restoration is influenced by both the ceramic thickness and the cement shade. This study aims to evaluate the color stability according to the 3D Master System of e.max ceramic discs after bonding with different shades of luting agents. A total of 120 e.max.Press 2M1 HT ceramic discs (60 discs of 1-mm thick and 60 discs of 0.5 mm thick) and three different values of Variolink Veneer cement were used (-3, 0, +3) for the cementation process. An Easyshade compact device was used to measure color shade tabs, according to the 3D Master System, on the discs both before and after the cementation protocols. Bivariate and multivariate analyses were carried out with the spss v.21. After bonding with the different luting agents, only 30% remained as 2M1: specifically, 22% of the thinner discs and 37.3% of the thicker discs. In general, the effect of bonding increased the value and the chroma of the shade to a significant extent. Regression analyses revealed that the most significant predictor for all color parameters was cement shade, the thinner disc group bonded with -3 cement being the most unstable subgroup. According to the 3D Master System, the shade of the luting agent was the main predictor of the final color. However, the final color seems to be somewhat unpredictable, at least according to the modulating factors evaluated in the present study.
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Affiliation(s)
- Javier Montero
- Department of Surgery, Faculty of MedicineUniversity of SalamancaCampus Miguel de Unamuno37007SalamancaSpain
| | - Cristina Gómez‐Polo
- Department of Surgery, Faculty of MedicineUniversity of SalamancaCampus Miguel de Unamuno37007SalamancaSpain
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26
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Akan E. Influence of shade of adhesive resin cement on its polymerization shrinkage. BIOTECHNOL BIOTEC EQ 2016. [DOI: 10.1080/13102818.2016.1147983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Ender Akan
- Faculty of Dentistry, Department of Prosthodontics, Izmir Katip Celebi University, Izmir, Turkey
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27
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Perroni AP, Amaral C, Kaizer MR, Moraes RRD, Boscato N. Shade of Resin-Based Luting Agents and Final Color of Porcelain Veneers. J ESTHET RESTOR DENT 2016; 28:295-303. [DOI: 10.1111/jerd.12196] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana Paula Perroni
- Student, Post-Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas; Pelotas RS Brazil
| | - Camila Amaral
- Graduate Student, School of Dentistry, Federal University of Pelotas; Pelotas RS Brazil
| | - Marina R. Kaizer
- Post-doc research fellow, School of Dentistry, Federal University of Pelotas; Pelotas RS Brazil
| | - Rafael Ratto De Moraes
- Professor, Post-Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas; Pelotas RS Brazil
| | - Noéli Boscato
- Professor, Post-Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas; Pelotas RS Brazil
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28
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Silami FDJ, Tonani R, Alandia-Román CC, Pires-de-Souza FDCP. Influence of Different Types of Resin Luting Agents on Color Stability of Ceramic Laminate Veneers Subjected to Accelerated Artificial Aging. Braz Dent J 2016; 27:95-100. [DOI: 10.1590/0103-6440201600348] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 11/24/2015] [Indexed: 11/22/2022] Open
Abstract
Abstract The aim of this study was to evaluate the influence of accelerated aging (AAA) on the color stability of resin cements for bonding ceramic laminate veneers of different thicknesses. The occlusal surfaces of 80 healthy human molars were flattened. Ceramic laminate veneers (IPS e-max Ceram) of two thicknesses (0.5 and 1.0 mm) were bonded with three types of luting agents: light-cured, conventional dual and self-adhesive dual cement. Teeth without restorations and cement samples (0.5 mm) were used as control. After initial color evaluations, the samples were subjected to AAA for 580 h. After this, new color readouts were made, and the color stability (ΔE) and luminosity (ΔL) data were analyzed. The greatest color changes (p<0.05) occurred when 0.5 mm veneers were fixed with light-cured cement and the lowest when 1.0 mm veneers were fixed with conventional dual cement. There was no influence of the restoration thickness when the self-adhesive dual cement was used. When veneers were compared with the control groups, it was verified that the cement samples presented the greatest alterations (p<0.05) in comparison with both substrates and restored teeth. Therefore, it was concluded that the thickness of the restoration influences color and luminosity changes for conventional dual and light-cured cements. The changes in self-adhesive cement do not depend on restoration thickness.
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29
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Meereis CTW, de Souza GBF, Albino LGB, Ogliari FA, Piva E, Lima GS. Digital Smile Design for Computer-assisted Esthetic Rehabilitation: Two-year Follow-up. Oper Dent 2015; 41:E13-22. [PMID: 26509231 DOI: 10.2341/14-350-s] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The esthetics of the smile are related to the color, shape, texture, dental alignment, gingival contour, and the relationship of these with the face. PURPOSE To present a two-year follow-up for an esthetic rehabilitation clinical case in which the method of digital smile design (DSD) was used to assist and improve diagnosis, communication, and predictability of treatment through an esthetic analysis of the assembly: face, smile, periodontal tissue, and teeth. CLINICAL PROCEDURE The smile's esthetics were improved through gingival recontouring, dental home bleaching, and a restorative procedure with thin porcelain laminate veneers using lithium disilicate glass-ceramic (e.max Ceram, Ivoclar-Vivadent) laminates on teeth 4 through 13. DISCUSSION The proposed technique had an acceptable clinical performance at the end of a two-year follow-up. SIGNIFICANCE DSD can be used to increase professional/patient communication and to provide greater predictability for the smile's esthetic rehabilitation.
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30
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Daniele S. Il restauro ceramico parziale e adesivo nei settori anteriori. DENTAL CADMOS 2014. [DOI: 10.1016/s0011-8524(14)70176-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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Niu E, Agustin M, Douglas RD. Color match of machinable lithium disilicate ceramics: Effects of cement color and thickness. J Prosthet Dent 2014; 111:42-50. [DOI: 10.1016/j.prosdent.2013.09.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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