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Torres CRG, Mailart MC, Moecke SE, Matuda AGN, Veloso SM, da Silva Ávila DM, Nicoló RD, Borges AB. Flowable bulk-fill versus layering restorative material on Class II restorations: A randomized clinical trial. J Dent 2024; 148:105154. [PMID: 38942111 DOI: 10.1016/j.jdent.2024.105154] [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: 11/14/2023] [Revised: 06/20/2024] [Accepted: 06/22/2024] [Indexed: 06/30/2024] Open
Abstract
OBJECTIVE This study evaluated the clinical performance of Class II restorations made with flowable bulk-fill base versus conventional layering ORMOCER-based restorative material in a split-mouth randomized clinical trial. METHODS Thirty patients received two class II restorations (n = 60) performed with different strategies. All preparations received the application of the universal self-etching adhesive system according to the manufacturer's recommendation, followed by the placement of a sectional matrix, wooden wedge, and separation ring. The first restoration was performed using 4 mm of flowable bulk-fill material covered by 2 mm of conventional viscosity restorative material (Bulk-fill technique). The second restoration was performed only with the conventional viscosity material, with a maximum of 2 mm thick increments, up to fill the cavity (Layering technique). After occlusal adjustment, the same polishing system was used for all restorations. Evaluations using the FDI criteria were conducted after 7 days, 12, and 24 months. Data were analyzed with the Fisher's Exact test (α=0.05). RESULTS From 30 participants, 24 attended the 24-month recall, and 48 restorations were evaluated. All restorations received acceptable overall scores for esthetic and biological properties after this period, while only 6.66 % of the restorations exhibited unacceptable overall scores for the functional properties in both groups. No significant differences between the tested restorative materials and techniques were found for each FDI criterion assessed. The success rate after 2 years was 93.33 % for both groups. CONCLUSION Both restorative materials exhibited good clinical performance for the parameters analyzed with no differences between them after 24-month follow-up. CLINICAL RELEVANCE Flowable bulk-fill ORMOCER-based material is a suitable alternative for direct Class II restorations, providing good clinical outcomes and simplifying the restorative procedure. CLINICAL TRIAL REGISTRATION NUMBER RBR-6mvp9w.
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Affiliation(s)
- Carlos Rocha Gomes Torres
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil.
| | - Mariane Cintra Mailart
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil
| | - Sabrina Elise Moecke
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil
| | - Amanda Guedes Nogueira Matuda
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil
| | - Sheyla Mamede Veloso
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil
| | - Daniele Mara da Silva Ávila
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil
| | - Rebeca Di Nicoló
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil
| | - Alessandra Bühler Borges
- Department of Restorative Dentistry, Institute of Science and Technology, Sao Paulo State University - UNESP, Brazil. Av. Engenheiro Francisco Jose Longo, 777, Jardim Sao Dimas, Sao Jose dos Campos, SP, CEP 12245-000, Brazil
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Ñaupari-Villasante R, Carpio-Salvatierra B, de Freitas A, de Paris Matos T, Nuñez A, Tarden C, Barceleiro MO, Reis A, Loguercio A. Influence of different viscosity and chemical composition of flowable composite resins: A 48-month split-mouth double-blind randomized clinical trial. Dent Mater 2024:S0109-5641(24)00233-1. [PMID: 39147655 DOI: 10.1016/j.dental.2024.07.034] [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: 05/24/2024] [Revised: 07/24/2024] [Accepted: 07/31/2024] [Indexed: 08/17/2024]
Abstract
OBJECTIVES To evaluate the clinical performance of two flowable composites based on methacrylate and one based on ormocer in treating non-carious cervical lesions (NCCLs) after 48-month evaluation in a split-mouth double-blind clinical study design. METHODS A total of 183 restorations were performed on NCCLs using a universal adhesive system (Futurabond U, Voco GmbH) with selective enamel etching on 27 participants: two participants received twelve restorations each, three received nine restorations each, and 22 participants received six restorations each. Three different flowable composites were employed (n = 61): a low-viscosity methacrylate-based composite (GrandioSO Flow, LVM), a high-viscosity methacrylate-based composite (GrandioSO Heavy Flow, HVM), and an ormocer-based flowable composite (Admira Fusion Flow, ORM). All restorations were evaluated using FDI and USPHS criteria after 48 months. Statistical analysis was conducted using Kaplan-Meier Survival analysis and Kruskal-Wallis analysis of variance rank (α = 0.05). RESULTS After 48 months, 17 restorations were lost: LVM 6, HVM 9, ORM 2. The retention rates (95 % confidence interval) were 89.4 % for LVM, 80.4 % for HVM, and 95.6 % for ORM, with a significant difference between HVM vs. LVM and HVM vs. ORM (p < 0.05). Minor defects were observed in 30 restorations for marginal staining criteria (LVM 12, HVM 10, ORM 8) and in 71 restorations for marginal adaptation criteria (LVM 24, HVM 20, ORM 27) without significant difference between groups (p > 0.05). No restorations showed postoperative sensitivity or recurrence of caries. SIGNIFICANCE The increased viscosity of flowable composites could reduce the clinical longevity in NCCLs after 48 months. Ormocer-based and low-viscosity methacrylate-based flowable composites showed a successful clinical performance in NCCLs after 48 months.
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Affiliation(s)
- Romina Ñaupari-Villasante
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Avenida General Carlos Cavalcanti, Ponta Grossa, PR 4748, Brazil.
| | - Byron Carpio-Salvatierra
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Avenida General Carlos Cavalcanti, Ponta Grossa, PR 4748, Brazil.
| | - André de Freitas
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Avenida General Carlos Cavalcanti, Ponta Grossa, PR 4748, Brazil.
| | - Thalita de Paris Matos
- Department of Restorative Dentistry, School of Dentistry, Tuiuti University of Paraná, R. Padre Ladislau Kula, 395 - Santo Inácio, Curitiba, PR, Brazil.
| | - Alejandra Nuñez
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Avenida General Carlos Cavalcanti, Ponta Grossa, PR 4748, Brazil; Departamento de Odontologia Restauradora y Materiales Dentales, Escuela de Odontologia Universidad San Francisco de Quito (USFQ), Av. Pampite y Diego de Robles, Quito, Ecuador.
| | - Chane Tarden
- Department of Restorative Dentistry, School of Dentistry, Fluminense Federal University, Rua Doutor Silvio Henrique Braune, 22, Centro, Nova Friburgo, RJ, Brazil.
| | - Marcos Oliveira Barceleiro
- Department of Restorative Dentistry, School of Dentistry, Fluminense Federal University, Rua Doutor Silvio Henrique Braune, 22, Centro, Nova Friburgo, RJ, Brazil.
| | - Alessadra Reis
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Avenida General Carlos Cavalcanti, Ponta Grossa, PR 4748, Brazil.
| | - Alessandro Loguercio
- Department of Restorative Dentistry, School of Dentistry, Ponta Grossa State University, Avenida General Carlos Cavalcanti, Ponta Grossa, PR 4748, Brazil.
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Reda SA, Hussein YF, Riad M. The impact of Bis-GMA free and Bis-GMA containing resin composite as posterior restoration on marginal integrity: a randomized controlled clinical trial. BMC Oral Health 2023; 23:1022. [PMID: 38114979 PMCID: PMC10731870 DOI: 10.1186/s12903-023-03759-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/12/2023] [Indexed: 12/21/2023] Open
Abstract
BACKGROUND There have been concerns surrounding the utilization of Bis-GMA, a type of bisphenol A (BPA) derivative, within the dental industry. The aim of this study was to compare the performance of bulk fill Bis-GMA-free resin composite class II restorations in respect of its marginal integrity in comparison to bulk fill Bis-GMA-containing resin composite class II restorations over a 12-month period in a parallel clinical trial utilizing a split-mouth, double-blind, randomized strategy. METHODS 20 patients participated in this study. Each patient has received one pair of class II posterior restorations, Bis-GMA-free (Admira fusion x-tra), and Bis-GMA containing (x-tra fil) on each side of the mouth (split-mouth strategy), (n = 40). The restorations' marginal integrity was evaluated based on Ryge's criteria (modified USPHS) at baseline (after 1 week), as well as 1 month, 3 months, 6 months, 9 months, and after 12 months of follow-up by two calibrated examiners. The statistical analyses utilizing the Friedman and Wilcoxon tests, the significance level was adjusted to 0.05. RESULTS Following the 12-month period, all patients attended the recall visits to evaluate the restorations. The Wilcoxon signed-rank and Friedman tests, revealed that both types of bulk fill had 100% of Alpha (A) scores at baseline and after 1 month with no significant statistical differences. After 3, 6, 9, and 12 months, both tested bulk fill restorations showed Bravo (B) score with Bis-GMA free 10% and 5% for Bis-GMA containing with no statistically significant difference (p ≤ 0.05) for clinical marginal integrity parameter in USPHS criteria. CONCLUSIONS Bis-GMA-free resin composites demonstrated satisfactory, marginal integrity compared with Bis-GMA-containing resin composites within 12 months. TRIAL REGISTRATION The protocol of the current study was registered at www. CLINICALTRIALS gov , with the identification number NCT05480852 on 29/07/2022. All procedures involving human participants were performed in accordance with the ethical standards of the Research Ethics Committee of the Faculty of Dentistry, Minia University, Egypt, under the approval number 419 on 27/06/2020.
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Affiliation(s)
- Sara Ahmed Reda
- Operative Dentistry Department, Faculty of Dentistry, Minia University, Minia, Egypt
| | - Yasser Fathi Hussein
- Dental Biomaterials Department, Faculty of Dentistry, Minia University, Minia, 61519, Egypt
| | - Mona Riad
- Conservative Dentistry Department, Faculty of Dentistry, Cairo University, 11 El-Saraya St, Manial, Cairo, 11553, Egypt.
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Ghani SMA, Hassan MIA, Abdullah AH, Ghani ARA, Izra'ai SI, Aregawi W, Chew HP, Fok A. Linear and volumetric shrinkage displacements of resin composite restorations with and without debonding. Dent Mater J 2023; 42:659-668. [PMID: 37612060 DOI: 10.4012/dmj.2023-023] [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: 08/25/2023]
Abstract
The study aimed to compare shrinkage displacements of fully and partially bonded resin composite restorations (RCRs). Two groups (n=5) Class-I RCR evaluated: Group 1 (G1) fully bonded and Group 2 (G2) debonded at the floor. Experimental results were compared with predictions from simple theory and finite element analysis (FEA). The experimental linear surface displacement (LSD) was G1 62.5±5.2 µm and G2 32.8±4.0 µm. Theoretically-predicted LSD for G1 60.1±7.4 µm and G2 31.3±7.5 µm. FEA-predicted LSD were G1 65.2 µm and G2 34.6 µm. The experimental volumetric surface displacement (VSD) was G1 1.22±0.2 mm3 and G2 0.63±0.2 mm3. Theoretically-predicted VSD for G1 1.36±0.2 mm3 and G2 0.67±0.2 mm3. No significant difference (p>0.05) was found in LSD and VSD among the experimental, theoretical and FEA in the same group. Significant differences (p<0.05) were noted between the two groups, with LSD and VSD of G2 values being almost half of G1. This pattern gave an insight of a debond restoration characteristics.
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Affiliation(s)
- Siti Mariam Ab Ghani
- Center for Restorative Dentistry Studies, Faculty of Dentistry, Universiti Teknologi MARA
| | | | | | | | | | - Wondwosen Aregawi
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota
| | - Hooi Pin Chew
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota
| | - Alex Fok
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota
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Țuculină MJ, Staicu AN, Munteanu MC, Cumpătă CN, Dimitriu B, Rîcă AM, Beznă MC, Popa DL, Popescu AD, Țîrcă T. Study on the Restoration of Class II Carious Cavities by Virtual Methods: Simulation of Mechanical Behavior. J Funct Biomater 2023; 14:354. [PMID: 37504849 PMCID: PMC10381501 DOI: 10.3390/jfb14070354] [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: 06/11/2023] [Revised: 07/02/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023] Open
Abstract
The restoration of class II cavities is predominantly carried out with composite materials. Due to the high failure rate in restoring this type of cavity, composite materials with much-improved properties and new application techniques have been promoted. The study aimed to analyze the mechanical behavior of several topical composite materials (nanocomposites, nanohybrids and ormocer) using different application techniques. In a lower second molar, a class II occlusal cavity was prepared. As filling materials, we used the following combinations: Admira Fusion and Admira Fusion Flow, Grandio and Grandio Flow, Filtek Supreme XT and Filtek Supreme Flow. These were applied using a snow plow, injection molded and Bichacho techniques. Three-dimensional scanning of the molar with the prepared cavity was performed, and then scanning of each layer of added composite material was performed, obtaining three-dimensional models. The virtual molar models were analyzed with software specific to the finite element analysis method, where their physical-mechanical properties were entered and assigned to the components of the virtual molar. Simulations at high forces specific to bruxism were then carried out and analyzed, and compared. The values of displacements and strain, for all six analyzed situations, are relatively small (range from 5.25 × 10-6-3.21 × 10-5 for displacement, 6.22 × 10-3-4.34 × 10-3 for strain), which validates all three methods and the materials used. As far as the stress values are concerned, they are similar for all methods (250-300 MPa), except for the snow plow and injection-molded techniques using Grandio and Grandio Flow composites, where the maximum von Mises stress value was more than double (approximately 700 MPa). When using the combination of Grandio and Grandio Flow materials, the 1 mm thickness of the fluid composite layer was found to have a major influence on occlusal forces damping as opposed to 0.5 mm. Therefore, the Bichacho technique is indicated at the expense of the snow plow and injection-molded techniques. The composite materials used by us in this study are state-of-the-art, with clear indications for restoring cavities resulting from the treatment of carious lesions. However, their association and application technique in the case of Class II cavities is of clinical importance for resistance to masticatory forces.
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Affiliation(s)
- Mihaela Jana Țuculină
- Department of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Adela Nicoleta Staicu
- Department of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Maria Cristina Munteanu
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Cristian Niky Cumpătă
- Faculty of Dental Medicine, University Titu Maiorescu of Bucharest, 67A Gheorghe Petrascu Str., 031593 Bucharest, Romania
| | - Bogdan Dimitriu
- Department of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy Carol Davila Bucharest, 050474 Bucharest, Romania
| | - Ana Maria Rîcă
- Department of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Maria Cristina Beznă
- Department of Pathophysiology, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Dragoș Laurențiu Popa
- Department of Automotive, Transportation and Industrial Engineering, Faculty of Mechanics, University of Craiova, 200478 Craiova, Romania
| | - Alexandru Dan Popescu
- Department of Endodontics, Faculty of Dentistry, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Tiberiu Țîrcă
- Department of Oro-Dental Prevention, Faculty of Dental Medicine, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
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Durmazpinar PM, Recen D, Çeliksöz Ö, Yazkan B. Micro shear bond strength of mineral trioxide aggregate to different innovative dental restorative materials. Proc Inst Mech Eng H 2023; 237:762-769. [PMID: 37171056 DOI: 10.1177/09544119231173506] [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: 05/13/2023]
Abstract
The objective of this in vitro study was to investigate the micro shear bond strength (µSBS) of mineral trioxide aggregate to four different restorative materials. Sixty mineral trioxide aggregate (MTA) samples were randomly assigned into four experimental groups based on the restorative materials used: nanohybrid resin composite as a control, giomer, alkasite and ormocer. µSBS samples were prepared for each group (n = 15). These samples were then submitted to a µSBS test (crosshead speed, 0.5 mm/min). The resulting data were statistically analyzed by one-way analysis of variance (ANOVA), Levene, and Bonferroni tests (α = 0.05). The bond strength of the alkasite group was statistically significantly higher than all the tested groups (p<0.05), while there were no significant differences between the nanohybrid resin composite, giomer, or ormocer groups (p > 0.05). Within the limitations of this study, alkasite restorative material could be a promising material when placed over MTA.
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Affiliation(s)
| | - Duygu Recen
- Department of Restorative Dentistry, Faculty of Dentistry, Izmir Democracy University, Istanbul, Turkey
| | - Özge Çeliksöz
- Department of Restorative Dentistry, Faculty of Dentistry, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Başak Yazkan
- Department of Restorative Dentistry, Faculty of Dentistry, Pamukkale University, Denizli, Turkey
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El-Maksoud OA, Hamama HHH, Wafaie RA, El-Wassefy N, Mahmoud SH. Effect of shelf-storage temperature on degree of conversion and microhardness of composite restorative materials. BMC Oral Health 2023; 23:57. [PMID: 36721191 PMCID: PMC9890862 DOI: 10.1186/s12903-023-02770-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 01/25/2023] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The pre-cure temperature is considered an important parameter that affects the polymerization kinetics and the properties of composite restoration. As dissension exists about the effect of storing composite restorative materials in refrigerator, this study aimed to assess the effect of shelf-storage temperature on degree of conversion (DC) and microhardness of three composite restorative materials with different matrix systems. METHODS Three commercially-available composite restorative materials were used in this study; an Ormocer-based composite (Admira Fusion, Voco GmbH), a nanoceramic composite, (Ceram.X SphereTEC One, Dentsply Sirona GmbH), and a nanohybrid composite (Tetric N-Ceram, Ivoclar Vivadent AG). Regarding DC and microhardness tests, 60 disc-shaped composite specimens for each test were randomly divided into 3 groups (n = 20) according to the restorative material used. Each group was divided into 2 subgroups (n = 10) according to the composite storage temperature; stored at room temperature or stored in the refrigerator at 4°-5 °C. DC was evaluated using a Fourier-transform infrared spectrometer coupled to an attenuated total reflectance accessory. Microhardness was evaluated using micro-Vickers hardness tester under a load of 50 g with a dwell time of 10 s. The results were analyzed by ANOVA, post-hoc LSD, and independent t-tests at a significance level of p < 0.05. RESULTS Regarding DC test all groups showed statistically significant differences at both storage temperature. The Ormocer-based composite had the highest mean values. There was a statistically significant difference between all room-stored groups and their corresponding groups stored at refrigerator (p < 0.05). For microhardness test, all groups exhibited also statistically significant differences at both storage temperatures with the Ormocer-based composite having the highest mean values. A statistically significant difference between both room-stored and refrigerator-stored groups has been observed also (p < 0.05). CONCLUSIONS Refrigeration of resin-composite might have a deleterious effect on DC and microhardness of the tested composite restorative materials with different matrix systems. Moreover, the differences in the formulations of composite matrix have a potential impact on DC and microhardness.
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Affiliation(s)
- Omar Abd El-Maksoud
- Conservative Dentistry Department, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Gamasa, Egypt
| | | | - Ramy Ahmed Wafaie
- Conservative Dentistry Department, Faculty of Oral and Dental Medicine, Delta University for Science and Technology, Gamasa, Egypt
| | - Noha El-Wassefy
- Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Salah Hasab Mahmoud
- Conservative Dentistry Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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Feddersen S, Kern G, Berghaus E, Kommerein N, Winkel A, Eisenburger M, Petersen S. Antimicrobial agents in dental restorative materials: a on polymerization, short-term drug release and biological impact. Eur J Oral Sci 2021; 130:e12839. [PMID: 34935205 DOI: 10.1111/eos.12839] [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] [Received: 06/16/2021] [Accepted: 10/22/2021] [Indexed: 11/29/2022]
Abstract
With the aim to design bioactive dental restorative material, the present study investigated the influence of the antimicrobial agents chlorhexidine diacetate (CHX) and octinidine (di)hydrochloride (ODH) when incorporated in two different materials. Selected parameters were polymerization enthalpy, short-term drug release, and the effect on Streptococcus mutans as well as human gingival fibroblasts. Samples were made by mixing a nano-hybrid ormocer (O) and a methacrylate-based nano-hybrid composite (C), each with a mass fraction of 2% CHX or ODH. Release profiles and concentrations of active agents from the resins were assessed, and the cell proliferation of human gingival fibroblasts as well as Streptococcus mutans cultured with the eluates were evaluated. The influence on polymerization was assessed by means of differential scanning calorimetry. Both drugs, especially ODH, showed a decreasing effect on polymerization enthalpies associated with a lowered crosslinking degree. At the same time ODH appeared to be released more persistently than CHX. Moreover, ODH was more efficient with regard to bacteria growth inhibition but also more cytotoxic in terms of reduction of cell viability. ODH is deemed more appropriate for application in a dental resin-based drug delivery system, because of the more persistent drug release than seen for CHX.
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Affiliation(s)
- Silas Feddersen
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
| | - Gabriela Kern
- Department of Genetics, Molecular Biology, Microbiology and Toxicology, UNISINOS University, Sao Leopoldo, Brazil
| | - Eva Berghaus
- Laboratory of Chemistry and Surface Modification, University of Applied Sciences, Osnabrueck, Germany
| | - Nadine Kommerein
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
| | - Andreas Winkel
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
| | - Michael Eisenburger
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
| | - Svea Petersen
- Laboratory of Chemistry and Surface Modification, University of Applied Sciences, Osnabrueck, Germany
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Contreras SCM, Jurema ALB, Claudino ES, Bresciani E, Caneppele TMF. Monowave and polywave light-curing of bulk-fill resin composites: degree of conversion and marginal adaptation following thermomechanical aging. Biomater Investig Dent 2021; 8:72-78. [PMID: 34368776 PMCID: PMC8317947 DOI: 10.1080/26415275.2021.1937181] [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] [Indexed: 11/23/2022] Open
Abstract
Aim: This study aimed to evaluate the effect of polymerization with either a monowave (MW) or a polywave (PW) light-curing unit (LCU) on the degree of conversion (DC) and marginal adaptation following thermomechanical aging of an ormocer bulk-fill resin composite (RC) (Admira fusion X-tra Bulk Fill – AB), a methacrylate-based bulk-fill RC (Tetric N-Ceram Bulk Fill – TB) and a conventional RC (Tetric N-Ceram – TC). Methods: DC was assessed in five samples of each RC using Fourier transform infrared spectroscopy. For determination of marginal adaptation, standard preparations were made in 60 bovine incisors, divided into three groups, according to the RC. The bulk-fill RC was inserted in a single increment of 4 mm. In contrast, the conventional RC was inserted in three increments. Marginal gap was evaluated after thermomechanical aging. Data were analyzed using a two-way analysis of variance (ANOVA) and Tukey’s tests for multiple comparisons (α = 0.05). Results: The two-way ANOVA showed a significant effect (p<.05) of the RC factor but not of the LCU factor. The Tukey test showed that TB had the significantly lowest DC followed by TC, and with AB having the significantly highest DC. For the marginal adaptation, a significant effect was found for the LCU factor and the for the interaction RC × LCU (p<.05). Groups light-cured with PW showed significantly wider marginal gaps than MW. TC presented wider marginal gaps (17.36 µm) when cured with PW than when cured with MW (13.05 µm). The two bulk-fill RC resulted in similar marginal gap formation to each other. Conclusion: The ormocer-based bulk-fill RC showed a higher DC than the methacrylate-based bulk-fill RC but similar marginal adaptation. The LCU, MW or PW, had no significant influence on the DC, and no relevance on the marginal adaptation.
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Affiliation(s)
| | | | | | - Eduardo Bresciani
- Department of Restorative Dentistry, São Paulo State University (UNESP), São Paulo, Brazil
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Pereira JR, Vidotti HA, Júnior LC, Vermudt A, de Souza Almeida M, Pamato S. Analysis of microleakage and marginal gap presented by new polymeric systems in class V restorations: An in vitro study. Saudi Dent J 2021; 33:156-160. [PMID: 33679109 PMCID: PMC7910649 DOI: 10.1016/j.sdentj.2019.11.007] [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: 07/01/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 11/23/2022] Open
Abstract
Objective Evaluating the contraction of polymerization effect of silorane-based composite on dental interface in enamel. Materials and Methods Eighty class V cavities were confectioned in forty extracted molar teeth and restored with different combinations of resinous-based and bond system. They were divided into the following groups: (G1) three-step etch-and-rinse adhesive system and methacrylate-based resin, (G2) two-step etch-and-rinse adhesive system and methacrylate-based resin, (G3) Filtek P-90 self-conditioning adhesive system and methacrylate-based resin, (G4) Adper SE Plus self-conditioning adhesive system and methacrylate-based resin, (G5) three-step etch-and-rinse adhesive system and silorane-based resin, (G6) two-step etch-and-rinse adhesive system and silorane-based resin, (G7) Filtek P-90 self-conditioning adhesive system and silorane-based resin, (G8) Adper SE Plus self-conditioning adhesive system and silorane-based resin. Results Group 7 showed lower marginal leakage when compared with all other groups (p = 0.001). Conclusions The results allows suggesting that silorane-based resinous system is adequate to promote more satisfactory marginal sealing than any other combination, since the system is combined with its own bond system.
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Affiliation(s)
| | | | - Lindomar Corrêa Júnior
- Department of Prosthodontics, University of Southern Santa Catarina, Tubarão, SC, Brazil
| | - Alef Vermudt
- Department of Prosthodontics, University of Southern Santa Catarina, Tubarão, SC, Brazil
| | - Mauro de Souza Almeida
- Department of Prosthodontics, University of Southern Santa Catarina, Tubarão, SC, Brazil
| | - Saulo Pamato
- Department of Health Sciences, University of Southern Santa Catarina, Tubarão, Brazil
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Torres C, Augusto MG, Mathias-Santamaria IF, Di Nicoló R, Borges AB. Pure Ormocer vs Methacrylate Composites on Posterior Teeth: A Double-blinded Randomized Clinical Trial. Oper Dent 2020; 45:359-367. [PMID: 32053457 DOI: 10.2341/19-079-c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2019] [Indexed: 11/23/2022]
Abstract
CLINICAL RELEVANCE The clinical behavior of pure ormocer composite is reliable when used in class II restorations after 24 months of evaluation. SUMMARY
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LourenÇo AL, Jager ND, Prochnow C, Milbrandt Dutra DA, Kleverlaan CJ. Young's modulus and Poisson ratio of composite materials: Influence of wet and dry storage. Dent Mater J 2020; 39:657-663. [PMID: 32448846 DOI: 10.4012/dmj.2019-165] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In the oral environment dental materials are subject to a wet condition what might in time change their elastic properties. In this article, we evaluated the influence of the storage condition (dry versus wet) on the Young's modulus and the Poisson ratio in compression of three composite materials. The data of the Young's modulus and Poisson ratio published of dental composite materials are not always comparable, due to different test methods and sample dimensions influencing the results. Therefore, we established the degree of exactness of the results out of the test set-up used. Since the present study depicted differences of the properties after dry and wet storage, the elastic properties should be measured after wet storage. The bonding between the matrix and the filler particles showed to have an influence on the elastic properties and on the influence of a wet environment.
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Affiliation(s)
- Ana Lúcia LourenÇo
- Department of Dental Materials Science, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam
| | - Niek De Jager
- Department of Dental Materials Science, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam
| | - Catina Prochnow
- Oral Science (Prosthodontics Units), Faculty of Dentistry, Federal University of Santa Maria (UFSM)
| | | | - Cornelis J Kleverlaan
- Department of Dental Materials Science, Academic Center for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam
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13
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Ceci M, Viola M, Rattalino D, Beltrami R, Colombo M, Poggio C. Discoloration of different esthetic restorative materials: A spectrophotometric evaluation. Eur J Dent 2019; 11:149-156. [PMID: 28729784 PMCID: PMC5502556 DOI: 10.4103/ejd.ejd_313_16] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Objective: A crucial property of esthetic restorative materials is their long-term color stability. The aim of this in vitro study was to evaluate the color stability of esthetic restorative materials (one microfilled flowable composite, one nanofilled composite, one nanoybrid composite, one microfilled composite, and one nanoybrid ormocer-based composite) after surface roughening with cola and exposure to different staining solutions (coffee and red wine). Materials and Methods: All materials were polymerized into silicone rubber rings (2 mm × 6 mm × 8 mm) to obtain 150 specimens identical in size. Seventy-five specimens of Group A were first exposed to cola for 24 h, and then samples were immersed in coffee or red wine over a 28-day test period. A colorimetric evaluation, according to the CIE L*a*b* system, was performed at 7, 14, 21, 28 days. Shapiro–Wilk test and Kruskal–Wallis analysis of variance were applied to assess significant differences among restorative materials. Means were compared with Scheffe's multiple comparison test at the 0.05 level of significance. Results: Specimens of Group A showed higher variations when compared with Group B's specimens (P < 0.05). After 28 days, the immersion protocols caused a clinically perceivable color change for all materials tested (P < 0.05). CeramX Universal and Admira Fusion showed the lowest ΔE variations (P < 0.05). Conclusions: Staining beverages caused significant discolorations for all the materials tested. The first exposure to cola enhanced the subsequent staining with coffee or red wine. Nanohybrid composites reported the lowest color variations.
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Affiliation(s)
- Matteo Ceci
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences -Â Section of Dentistry, University of Pavia, Pavia, Italy
| | - Matteo Viola
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences -Â Section of Dentistry, University of Pavia, Pavia, Italy
| | - Davide Rattalino
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences -Â Section of Dentistry, University of Pavia, Pavia, Italy
| | - Riccardo Beltrami
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences -Â Section of Dentistry, University of Pavia, Pavia, Italy
| | - Marco Colombo
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences -Â Section of Dentistry, University of Pavia, Pavia, Italy
| | - Claudio Poggio
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences -Â Section of Dentistry, University of Pavia, Pavia, Italy
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Multi-length scale bioprinting towards simulating microenvironmental cues. Biodes Manuf 2018; 1:77-88. [PMID: 30546920 PMCID: PMC6267274 DOI: 10.1007/s42242-018-0014-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/02/2018] [Indexed: 02/08/2023]
Abstract
It is envisaged that the creation of cellular environments at multiple length scales, that recapitulate in vivo bioactive and structural roles, may hold the key to creating functional, complex tissues in the laboratory. This review considers recent advances in biofabrication and bioprinting techniques across different length scales. Particular focus is placed on 3D printing of hydrogels and fabrication of biomaterial fibres that could extend the feature resolution and material functionality of soft tissue constructs. The outlook from this review discusses how one might create and simulate microenvironmental cues in vitro. A fabrication platform that integrates the competencies of different biofabrication technologies is proposed. Such a multi-process, multiscale fabrication strategy may ultimately translate engineering capability into an accessible life sciences toolkit, fulfilling its potential to deliver in vitro disease models and engineered tissue implants.
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Thekiya AH, Aileni KR, Rachala MR, Reddy SD, Devi KS, Khan MYA. An Evaluation of Shear Bond Strength of Admira (Ormocer) as an Alternative Material for Bonding Orthodontic Brackets: An In vitro Study. J Int Soc Prev Community Dent 2018; 8:56-61. [PMID: 29629330 PMCID: PMC5853043 DOI: 10.4103/jispcd.jispcd_375_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 12/11/2017] [Indexed: 12/04/2022] Open
Abstract
Objective: To evaluate shear bond strength (SBS) of Ormocer-bonded orthodontic brackets with self-etching primer (SEP) and conventional adhesive system and also to assess the amount of adhesive remaining on the tooth surface after debonding using adhesive remnant index (ARI). Materials and Methods: The study was done on 90 extracted human upper first permanent maxillary premolars. The study sample was categorized into three groups of 30 each to assess the SBS using three adhesives, Ormocer, SEP, and conventional adhesive system. Following debonding, the surfaces of teeth were examined for residual adhesive remaining by means of the optical stereomicroscope at ×50 magnification. ARI (Artun and Bergland) was used to classify the amount of residual adhesive. Obtained data were expressed as mean ± standard deviation, and obtained data was expressed as mean ± standard deviation (SD) and statistical analysis was done using one way ANOVA and Mann-Whitney U-test [SPSS version 17 statistical package (SPSS Inc., Chicago, IL)]. Results: The mean SBS was maximum in Group I followed by Group II and Group III. The difference in the mean SBS among Group I (8.67 ± 1.84 Mpa), Group II (7.72 ± 1.82 MPa) and Group III (6.42 ± 1.55 MPa) was statistically significant. ARI was maximum in Group I followed by Group II and minimum Group III. Conclusion: Ormocer may be utilized as a substitute to generally used bisphenol A-glycidyl methacrylate-based adhesives; however, its effectiveness should be determined clinically by in vivo studies.
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Affiliation(s)
| | - K R Aileni
- Professor and Head, SVS Institute of Dental Sciences, Mahabubnagar, Telangana, India
| | - Madhukar Reddy Rachala
- Professor, Department of Orthodontics and Dentofacial Orthopedics, SVS Institute of Dental Sciences, Mahabubnagar, Telangana, India
| | | | - K Sena Devi
- Orthodontist and Dentofacial Orthopedics, Smiline Dental Hospitals, Madhapur, Hyderabad, India
| | - Md Yaser Ahmed Khan
- Senior Lecturer and Dentofacial Orthopedics, SVS Institute of Dental Sciences, Mahabubnagar, Telangana, India
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Schubert A, Ziegler C, Bernhard A, Bürgers R, Miosge N. Cytotoxic effects to mouse and human gingival fibroblasts of a nanohybrid ormocer versus dimethacrylate-based composites. Clin Oral Investig 2018; 23:133-139. [DOI: 10.1007/s00784-018-2419-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 03/12/2018] [Indexed: 01/31/2023]
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17
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Kruly PDC, Giannini M, Pascotto RC, Tokubo LM, Suga USG, Marques ADCR, Terada RSS. Meta-analysis of the clinical behavior of posterior direct resin restorations: Low polymerization shrinkage resin in comparison to methacrylate composite resin. PLoS One 2018; 13:e0191942. [PMID: 29466366 PMCID: PMC5842874 DOI: 10.1371/journal.pone.0191942] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 01/13/2018] [Indexed: 01/04/2023] Open
Abstract
Polymerization shrinkage of resin composite can compromise the longevity of restorations. To minimize this problem, the monomeric composition of composites have been modified. The objective of this study was to conduct a meta-analysis to assess the clinical behavior of restorations performed with low polymerization shrinkage resin composite in comparison with traditional methacrylates-based resin composite. This systematic review was registered at Prospero data system (CRD42015023940). Studies were searched in the electronic databases PubMed, Web of Science, Scopus, Lilacs and EMBASE according to a predefined search strategy. The inclusion criteria were as follow: (1) randomized controlled clinical trials with at least six months of follow-up; (2) studies investigating composites with monomers designed to reduce polymerization shrinkage; (3) studies conducted with class I or II restorations in the permanent dentition; and (4) studies that assessed at least one of the following criteria: marginal integrity/adaptation, marginal discoloration, recurent caries, retention of composite restorations, and postoperative sensitivity. Two independent reviewers analyzed the articles to determine inclusion and risk of bias. The search conducted in the databases resulted in a total of 14,217 studies. After reviewing the references and citations, 21 articles remained. The longest clinical follow-up time was 60 months. The meta-analysis of the data in the included studies demonstrated that only one variable (marginal adaptation after 12 months) showed statistically significant outcomes, in which methacrylates-based composites presented significantly better results than resin composites containing modified monomers. The good level of the scientific evidence as well as the overall low risk of bias of the included studies indicate that composites with silorane, ormocer or bulk-fill type modified monomers have a clinical performance similar to conventional resin composites.
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Affiliation(s)
| | - Marcelo Giannini
- Department of Restorative Dentistry, State University of Campinas, Piracicaba, São Paulo, Brazil
| | | | - Laíse Midori Tokubo
- Department of Dentistry, State University of Maringa, Maringa, Parana, Brazil
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Microhardness of different esthetic restorative materials: Evaluation and comparison after exposure to acidic drink. Dent Res J (Isfahan) 2018; 15:166-172. [PMID: 29922334 PMCID: PMC5958532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Acidic beverages, such as soft drinks (orange juice and cola), can produce erosion of resin composites. The aim of this in vitro study was to evaluate the effect of immersion in acidic drink on the Vickers microhardness (VK) of different esthetic restorative materials (one nanohybrid Ormocer-based composite, one nanoceramic composite, one nanofilled composite, and one microfilled hybrid composite). MATERIALS AND METHODS In this in vitro study, thirty specimens of each esthetic restorative material were divided into three subgroups (n = 10): specimens of group 1 were used as control, specimens of group 2 were immersed in 50 ml of acidic drink for 1 day, specimens of group 3 were immersed in 50 ml of acidic drink for 7 days. Data were analyzed by Shapiro-Wilk test to assess the normality of the distributions followed by nonparametric Kruskal-Wallis analysis of variance and Mann-Whitney U-test comparison test among groups. A significant level of α = 0.05 was set for comparison between the groups. RESULTS Mann-Whitney U-test showed that each material showed lower microhardness values after immersion in acidic solution (P < 0.05). Paired t-test confirmed that microhardness for each composite did not change after immersion in distilled water (Control group) (P > 0.05). Significant changes were registered for all restorative materials after immersion in acidic solution for 1 day and 7 days (P < 0.05). CONCLUSION The Filtek Supreme XTE, a nanofilled composite, and Admira Fusion, a nanohybrid ormocer-based composite, showed the best behavior. The Ceram X Universal (nanoceramic composite) although reached lower hardness values than the previous materials, but resisted well to the 1 week immersion in soft-drink. Finally, the Gradia Direct achieved the most disappointing results: Low microhardness values are justified by the nature of its filling (microfilled hybrid composite).
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Poggio C, Ceci M, Beltrami R, Mirando M, Wassim J, Colombo M. Color stability of esthetic restorative materials: a spectrophotometric analysis. ACTA BIOMATERIALIA ODONTOLOGICA SCANDINAVICA 2017. [PMID: 28642918 PMCID: PMC5433231 DOI: 10.1080/23337931.2016.1217416] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objective: The aim of this in vitro study was to evaluate the color stability of different restorative materials (one microfilled composite, one nanofilled composite, one nanohybrid composite and one Ormocer-based composite) after exposure to different staining solutions (coffee, coca-cola and red wine). Material and methods: All materials were polymerized into silicon rings (2 mm ×6 mm ×8 mm) to obtain specimens identical in size. Thirty cylindrical specimens of each material were prepared. They were immersed in staining solutions over a 28-day test period. A colorimetric evaluation according to the CIE L*a*b* system was performed by a blind trained operator at 7, 14, 21, 28 days of the staining process. The Shapiro–Wilk test and Kruskal–Wallis ANOVA were applied to assess significant differences among restorative materials. The paired t-test was applied to test which CIE L*a*b* parameters significantly changed after immersion in staining solutions. Results: All restorative materials showed clinically perceptible color differences after immersion in coffee. L* and b* values showed the highest variability. Coca cola and red wine did not influence the color stability for all restorative materials except for Filtek Supreme XTE. Conclusions: Coffee caused a significant color change in all types of tested composite resins. Filtek Supreme XTE demonstrated alone a staining susceptibility to red wine; no other significant differences among the materials were demonstrated. Long-term exposure to some food dyes (coffee in particular) can significantly affect the color stability of modern esthetic restorative materials regardless of materials’ different composition.
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Affiliation(s)
- Claudio Poggio
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of PaviaPaviaItaly
| | - Matteo Ceci
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of PaviaPaviaItaly
| | - Riccardo Beltrami
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of PaviaPaviaItaly
| | - Maria Mirando
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of PaviaPaviaItaly
| | - Jaffal Wassim
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of PaviaPaviaItaly
| | - Marco Colombo
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of PaviaPaviaItaly
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