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Cevik P, Akca G, Asar NV, Avci E, Kiat-Amnuay S, Yilmaz B. Antimicrobial effects of nano titanium dioxide and disinfectants on maxillofacial silicones. J Prosthet Dent 2023:S0022-3913(23)00135-X. [PMID: 37012133 DOI: 10.1016/j.prosdent.2023.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 03/02/2023] [Accepted: 03/03/2023] [Indexed: 04/03/2023]
Abstract
STATEMENT OF PROBLEM Deficient hygiene of maxillofacial prostheses can be a source of infection, and various disinfectants, including nano-oxides, have been suggested for the disinfection of silicone prostheses. While maxillofacial silicones involving nano-oxides at different sizes and concentrations have been evaluated in terms of their mechanical and physical properties, reports are lacking on the antimicrobial effect of nano titanium dioxide (TiO2) incorporated into maxillofacial silicones contaminated by different biofilms. PURPOSE The purpose of this in vitro study was to evaluate the antimicrobial effects of 6 different disinfectants and nano TiO2 incorporation into maxillofacial silicone contaminated with Staphylococcus aureus, Escherichia coli, and Candida albicans biofilms. MATERIAL AND METHODS A total of 258 silicone specimens (129 pure silicones and 129 nano TiO2-incorporated silicones) were fabricated. Specimens in each silicone group (with or without nano TiO2) were divided into 7 disinfectant groups (control, 0.2% chlorhexidine gluconate, 4% chlorhexidine gluconate, 1% sodium hypochlorite, neutral soap, 100% white vinegar, and effervescent) in each biofilm group. Contaminated specimens were disinfected, and the suspension of each specimen was incubated at 37 °C for 24 hours. Proliferated colonies were recorded in colony-forming units per mL (CFU/mL). The differences in microbial levels among specimens were evaluated to test the effect of the type of silicone and the disinfectant (α=.05). RESULTS Significant difference was found among disinfectants regardless of the silicone type (P<.05). Nano TiO2 incorporation showed an antimicrobial effect on S aureus, E coli, and C albicans biofilms. Nano TiO2 incorporated silicone cleaned with 4% chlorhexidine gluconate had statistically less C albicans than pure silicone. Using white vinegar or 4% chlorhexidine gluconate led to no E coli on either silicone. Nano TiO2 incorporated silicone cleaned with effervescent had fewer S aureus or C albicans biofilms. CONCLUSIONS The tested disinfectants and nano TiO2 incorporation into silicone were effective against most of the microorganisms used in this study.
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Affiliation(s)
- Pinar Cevik
- Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey; and Research Scholar, Department of General Practice and Dental Public Health, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, Texas.
| | - Gulcin Akca
- Professor, Department of Medical Microbiology, Faculty of Dentistry, Division of Basic Sciences, Gazi University, Ankara, Turkey
| | - Neset Volkan Asar
- Professor, Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey
| | - Emine Avci
- Epidemiologist, General Directorate of Public Health, Turkish Ministry of Health, Turkey
| | - Sudarat Kiat-Amnuay
- Professor and Section Head, Department of General Practice and Dental Public Health, Houston Center for Biomaterials and Biomimetics, The University of Texas Health Science Center at Houston School of Dentistry, Houston, Texas
| | - Burak Yilmaz
- Associate Professor, Department of Reconstructive Dentistry and Gerodontology, and Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland; and Adjunct Professor, Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio
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Nalan Bozoğulları H, Büyükerkmen EB, Büyüközer Özkan H. Comparison of surface roughness and color stability of different denture characterizing composite resins: the effect of different surface treatments. J Prosthodont 2022; 32:53-60. [PMID: 35929407 DOI: 10.1111/jopr.13577] [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: 02/28/2022] [Accepted: 07/25/2022] [Indexed: 11/29/2022] Open
Abstract
PURPOSE This study aimed to investigate the effect of surface treatment and type of composite resin material on the color stability and surface roughness of different denture characterizing composites. MATERIALS AND METHODS Two nanohybrids [Gradia Plus Gum, (GP) and SR Nexco Paste Gingiva, (SR)] and one microhybrid gingiva-colored composite resin (Amaris Gingiva, (AG)] were investigated. A total of 120 disk-shaped samples were prepared, 40 of each material. Samples were divided into two groups (n = 20) for each material according to the surface treatment applied: conventional polishing (control) and coated with a sealant in addition to the surface polishing. All groups were thermocycled. The surface roughness (Ra) was measured using a profilometer after thermal cycling. The samples were then divided into 2 subgroups (n = 10) and stored for 7 days in distilled water or coffee solution. Color differences (ΔE00 ) were calculated with a spectrophotometer. Results were evaluated with Kruskal-Wallis and Mann-Whitney U statistical analysis. RESULTS The type of denture characterizing composite material and surface treatment method revealed statistically significant differences for the ΔE00 (after immersion both in coffee and distilled water) and the Ra values of denture characterizing composite (p < 0.001 for both). All sealed groups showed significantly higher Ra than the all polished groups. Both in the polished groups and the sealant applied groups, the GP had the highest mean Ra values (0.29 ±0.05 μm and 0.47 ±0.09 μm, respectively). It was followed by SR (0.23 ±0.06 μm and 0.41 ±0.10 μm, respectively), and AG groups (0.20 ±0.06 μm and 0.39 ±0.09 μm, respectively). According to the mean ΔE00 results, all composite groups showed significantly higher ΔE00 values immersed in coffee solutions compared to distilled water. In coffee solutions, the highest ΔE00 was observed in the polished GP (1.90 ±0.40), and the lowest ΔE00 was observed in the polished SR (0.97 ±0.36). The sealed groups showed higher ΔE00 than the polished groups, except for GP. CONCLUSIONS The surface roughness value of sealant applied groups were significantly higher than those of their polished groups. The surface sealant application significantly increased the staining of all composite groups compared to conventional polishing, except for GP. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hatice Nalan Bozoğulları
- Department of Prosthodontics, Faculty of Dentistry, Alanya Alaaddin Keykubat University, Antalya, Turkey
| | - Emine Begüm Büyükerkmen
- Department of Prosthodontics, Faculty of Dentistry, Necmettin Erbakan University, Konya, Turkey
| | - Hatice Büyüközer Özkan
- Department of Endodontics, Faculty of Dentistry, Alanya Alaaddin Keykubat University, Antalya, Turkey
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Dimitrova M, Chuchulska B, Zlatev S, Kazakova R. Colour Stability of 3D-Printed and Prefabricated Denture Teeth after Immersion in Different Colouring Agents—An In Vitro Study. Polymers (Basel) 2022; 14:polym14153125. [PMID: 35956640 PMCID: PMC9371044 DOI: 10.3390/polym14153125] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/17/2022] [Accepted: 07/27/2022] [Indexed: 12/10/2022] Open
Abstract
This study investigated the colour stability of three dimensional (3D)-printed and conventional denture teeth after immersion in different colourants. A total of 60 artificial maxillary central incisors were selected from three types of materials: 3D-printed dental resin (NextDent, 3D Systems, Soesterberg, The Netherlands), prefabricated acrylic teeth in Ivostar Shade (Ivoclar Vivadent, Schaan, Liechtenstein), and SpofaDent Plus in shade A2 (SpofaDental, Jičín, Czechia). These were immersed in four types of colourants at room temperature (23 °C ± 1 °C), including artificial saliva (pH = 6.8) as a control group, coffee, red wine, and Coca-Cola (n = 5). The temperature and the pH of the colouring agents were maintained throughout all immersion periods. After 7 days (T1), 14 days (T2), and 21 days (T3), the ∆E values were measured with a SpectroShade Micro (SpectroShade, Oxnard, CA, USA) spectrophotometer. Their means were then calculated and compared by two-way ANOVA. The independent factors, immersion time and different staining solutions, as well as the interaction between these factors, significantly influenced ΔE. The highest and the lowest mean ∆Es were recorded for prefabricated teeth in red wine, and 3D-printed teeth in artificial saliva, respectively. All the specimens demonstrated an increased colour change at T1 compared to T3, and the difference in mean ∆E was statistically significant.
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Affiliation(s)
- Mariya Dimitrova
- Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria; (B.C.); (S.Z.); (R.K.)
- Correspondence:
| | - Bozhana Chuchulska
- Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria; (B.C.); (S.Z.); (R.K.)
| | - Stefan Zlatev
- Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria; (B.C.); (S.Z.); (R.K.)
- CAD/CAM Center of Dental Medicine, Research Institute, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria
| | - Rada Kazakova
- Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria; (B.C.); (S.Z.); (R.K.)
- CAD/CAM Center of Dental Medicine, Research Institute, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria
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Color Stability Determination of CAD/CAM Milled and 3D Printed Acrylic Resins for Denture Bases: A Narrative Review. JOURNAL OF COMPOSITES SCIENCE 2022. [DOI: 10.3390/jcs6070201] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The aim of this paper is to review the available literature on the different methods for color stability determination of CAD/CAM milled and 3D printed resins for denture bases. The methodology included applying a search strategy, defining inclusion and exclusion criteria and selecting studies to summarize the results. Searches of PubMed, Scopus, and Embase databases were performed independently by three reviewers to gather the literature published between 1998 and 2022. A total of 186 titles were obtained from the electronic database, and the application of exclusion criteria resulted in the identification of 66 articles pertaining to the different methods for color stability determination of CAD/CAM acrylic resins for denture bases. Color change in dental materials is clinically very important for the dental operator, as it determines the clinical serviceability of the material. Discoloration of the denture bases can be evaluated with various instruments and methods. Dental resins may undergo color changes over time due to intrinsic and/or extrinsic factors. The extrinsic factors are considered the more frequent causes of color changes. According to a number of studies, CAD/CAM fabricated acrylics have achieved better color stability than the conventional PMMA (polymethyl methacrylate) resins.
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Tieh MT, Waddell JN, Choi JJE. Optical and mechanical properties of conventional, milled and 3D-printed denture teeth. J Mech Behav Biomed Mater 2021; 126:105061. [PMID: 34963102 DOI: 10.1016/j.jmbbm.2021.105061] [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: 10/28/2021] [Revised: 12/14/2021] [Accepted: 12/20/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Investigate the effect of various liquids on the optical properties and Vickers hardness of conventional, milled and 3D-printed denture teeth. METHODS Six different types of denture teeth (Maxillary anteriors of three different conventional teeth, Vivodent DCL, SR Phonares II, Vita Physiodens; milled teeth, IvotionDent; and two different 3D-printed teeth, Asiga DentaTooth and NextDent C&B MFH) were investigated (total n = 336). The labial surface of each specimen was prepared to a dimension of 10 × 5 × 3mm. Specimens were immersed in artificial saliva, coffee, red wine and denture cleaner with artificial aging to simulate denture use of 12 and 24 months in vivo. Measurements of translucency parameter (TP), shade change (ΔE), surface roughness (Ra) and Vickers hardness (VHN) were conducted at baseline and after artificial aging while immersed in the liquids at each timeframe. Data were statistically analysed by ANOVA and post-hoc test (SPSS Ver 27). Surfaces of specimens were analysed under scanning electron microscopy (SEM). RESULTS Milled teeth had the highest overall translucency parameter (5.33 ± 0.76-7.3 ± 0.99). All materials had statistically significant change in translucency parameter and shade after 24 months simulated aging (p < 0.05), especially the milled and 3D-printed teeth (p < 0.01). Surface roughness of all materials were under plaque accumulation threshold Ra = 0.2 μm. At baseline, Vita Physiodens teeth (PMMA with microfillers) demonstrated the highest hardness (33.99 kgf/mm2±3.7), whereas both 3D-printed materials exhibited the lowest hardness (13.27 kgf/mm2±0.36-18.13 kgf/mm2±0.93). Artificial saliva, red wine and denture cleaner had a statistically significant impact (p < 0.05) on hardness of all materials (12.1 kgf/mm2±1.17-30.77 kgf/mm2±2.98). CONCLUSIONS Milled teeth exhibited the best optical properties (highest overall translucency parameter and lowest shade change). Milled teeth were also the only material that showed colour change (ΔE values) within clinically acceptable limits. Denture cleaner had the most impact on optical and mechanical properties of all materials. Surface roughness and hardness of 3D-printed teeth had the most change after artificial aging.
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Affiliation(s)
- Mei Ting Tieh
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, 310 Great King Street, Dunedin, 9016, New Zealand
| | - John Neil Waddell
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, 310 Great King Street, Dunedin, 9016, New Zealand
| | - Joanne Jung Eun Choi
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, 310 Great King Street, Dunedin, 9016, New Zealand.
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Tieh MT, Waddell JN, Choi JJE. Optical Properties and Color Stability of Denture Teeth-A Systematic Review. J Prosthodont 2021; 31:385-398. [PMID: 34516027 DOI: 10.1111/jopr.13429] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2021] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To systematically review past studies to determine the effect of various solutions on the color of denture teeth, thus answering the question in regards to which type of denture teeth has the best optical properties after exposure to various solutions. The method of measuring the color of artificial teeth was also evaluated as a secondary outcome. MATERIALS AND METHODS A search of studies that quantitatively investigated the influence of immersion solutions on the color change of denture teeth was conducted. Ovid MEDLINE, PubMed and Scopus databases were searched from 1997 to April 2021. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used during article selection. Data regarding the effect of immersion solutions, accelerated aging and surface treatments on color change were gathered. Methodologies used to assess optical properties were also summarized and compared. The modified CONSORT checklist was used to determine the risk of bias of past studied included in this review. RESULTS One hundred thirty-three studies were identified after removing duplicates. Forty-one studies were selected for full-text analysis, and 35 remaining papers met the inclusion criteria and were therefore included in this systematic review. Thirty-two in vitro studies and 3 in vivo studies were included in the review. All studies reported that immersion in various solutions has a significant influence on the change in color and optical properties of denture teeth. However, the discoloration of denture teeth is still clinically acceptable in most studies. Exposure to various solutions also affected the translucency parameter of denture teeth. Most studies also investigated the surface roughness and hardness along with the optical properties, and reported that immersion cycles did not cause changes in surface roughness of denture teeth, while hardness was affected. The optical properties of PMMA denture teeth have been studied extensively, whereas that of CAD/CAM and 3D printed denture teeth is limited. CONCLUSIONS Color stability of CAD/CAM milled denture teeth is comparable to conventional PMMA denture teeth. There are contradictory findings in terms of color stability of 3D printed denture teeth as compared to conventional PMMA denture teeth. Staining by coffee is worst among the common beverages and solutions investigated. Denture teeth can show color changes after immersion in staining beverages as early as one week. The degree of discoloration of denture teeth after immersion is time dependent, with the larger extent in the initial phase.
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Affiliation(s)
- Mei Ting Tieh
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - John Neil Waddell
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Joanne Jung Eun Choi
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
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Color Stability and Surface Properties of PMMA/ZrO 2 Nanocomposite Denture Base Material after Using Denture Cleanser. Int J Biomater 2021; 2021:6668577. [PMID: 33927766 PMCID: PMC8049834 DOI: 10.1155/2021/6668577] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 01/10/2021] [Accepted: 03/26/2021] [Indexed: 11/17/2022] Open
Abstract
Objectives This study aimed to evaluate denture cleanser effects on color stability, surface roughness, and hardness of PMMA denture base resin reinforced with nano-ZrO2. Materials and Methods A total of 420 specimens were fabricated of unreinforced and nano-ZrO2 reinforced acrylic resin at 2.5% and 5%, resulting in 3 main groups. These groups were further subdivided (n = 10) according to immersion solution (distilled water, Corega, sodium hypochlorite, and Renew) and immersion duration. Surface roughness, hardness, and color were measured at baseline (2 days-T0) in distilled water and then after 180 and 365 days of immersion (T1 & T2) in water or denture cleansing solutions. Data was collected and analyzed using two-way ANOVA followed by Bonferroni post hoc test (α = 0.05). Results Surface roughness increased significantly after denture cleanser immersion of unmodified and nano-ZrO2-modified PMMA materials while hardness decreased (P < 0.001). The denture cleansers significantly affected the color of both PMMA denture bases (P < 0.001). The immersion time in denture cleansers significantly affected all tested properties (P < 0.001). Within denture cleansers, NaOCl showed the highest adverse effects (P < 0.05) while Renew showed the least adverse effects. Conclusion Denture cleansers can significantly result in color change and alter the surface roughness and hardness of denture base resin even with ZrO2 nanoparticles addition. Therefore, they should be carefully used.
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Motayagheni R, Ebrahim Adhami Z, Taghizadeh Motlagh SM, Mehrara F, Yasamineh N. Color changes of three different brands of acrylic teeth in removable dentures in three different beverages: An in vitro study. J Dent Res Dent Clin Dent Prospects 2021; 14:159-165. [PMID: 33408820 PMCID: PMC7770398 DOI: 10.34172/joddd.2020.034] [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: 07/05/2019] [Accepted: 07/05/2020] [Indexed: 11/09/2022] Open
Abstract
Background. The best prosthetic appliances exhibit a high level of similarity to the lost organ. Color should exhibit favorable stability, as a critical factor in the esthetic appearance of dental prostheses and materials used in fabricating prostheses. The present in vitro study was undertaken to evaluate color changes of three different brands of acrylic resin teeth in three different beverages.
Methods. In this in vitro study, 10 samples from each brand of acrylic resin tooth (Ivoclar, Italy; BStar, Iran; and BetaDent, Iran) were immersed in the following beverages for one week: tea, orange juice, natural carrot juice, and distilled water (control). The color parameters were measured using the spectrophotometry technique before and after immersion, and changes were calculated. The same procedures were carried out with the same number of samples at 30-day interval. Data were analyzed with multivariate ANOVA and post hoc Tukey tests.
Results. After seven days, Ivoclar and BStar brands exhibited the minimum (1.78) and maximum (3.39) color changes, respectively (P<0.05). At the 30-day interval, the Ivoclar and BetaDent brands exhibited the minimum (3.03) and maximum (4.27) color changes, respectively (P<0.05). At the 7-day interval, carrot juice, orange juice and tea, in descending order, caused the maximum and minimum color changes. At the 30-day interval, carrot juice resulted in maximum color changes (P<0.05); orange juice, and tea caused similar color changes (P>0.05).
Conclusion. Different beverages resulted in color changes with different patterns in different brands of acrylic resin teeth. Overall, the Ivoclar brand exhibited less color changes compared to BStar and BetaDent brands. In the first week, all the three brands and in 30 days, Ivoclar and BStar brands exhibited clinically acceptable color changes.
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Affiliation(s)
- Roza Motayagheni
- Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zia Ebrahim Adhami
- Department of Pediatrics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz,Iran
| | | | | | - Neda Yasamineh
- Dental and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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K MV, Selvakumar D, Seenivasan MK, Natarajan S, Natarajan P, Saravanakumar P. Evaluation and Comparison of the Effects of Persulfate Containing and Persulfate-free Denture Cleansers on Acrylic Resin Teeth Stained with Cigarette Smoke: An In Vitro Study. Cureus 2020; 12:e7318. [PMID: 32313759 PMCID: PMC7164715 DOI: 10.7759/cureus.7318] [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: 11/05/2022] Open
Abstract
Problem statement and aim The esthetics of the complete denture primarily depend upon the color of the denture teeth; however, there are situations where the teeth are subjected to extrinsic and intrinsic stains and discolor over time. The purpose of the study was to investigate the effects of smoking and two different denture cleaners on the color stability of the denture teeth. Material and methods Commercially available maxillary anterior teeth made up of acrylic resin were selected for the study and were divided into two groups (n=10): persulfate-free denture cleanser and persulfate containing denture cleansers. The acrylic teeth were set in the smoke chamber with a distance to absorb the smoke equally from the cigarette. The smoke was released for 10 minutes, and the results are observed by the spectrophotometer. Results All the values were collected after the 21st day, and data were analyzed with the SPSS software. It was found that denture cleansers with persulfate are effective on color stability. Conclusions Even though the persulfate containing denture cleansers are injurious to health, they can be recommended to the smokers with clear instructions of use. However, for non-smokers, persulfate-free denture cleansers are preferred over the persulfate containing denture cleansers.
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Affiliation(s)
- Meena Varshini K
- Dentistry, Sri Ramachandra Institute of Higher Education and Research, Chennai, IND
| | - Deepshika Selvakumar
- Dentistry, Sri Ramachandra Institute of Higher Education and Research, Chennai, IND
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Zago PMW, dos Santos Castelo Branco SJ, de Albuquerque Bogéa Fecury L, Carvalho LT, Rocha CQ, Madeira PLB, de Sousa EM, de Siqueira FSF, Paschoal MAB, Diniz RS, Gonçalves LM. Anti-biofilm Action of Chenopodium ambrosioides Extract, Cytotoxic Potential and Effects on Acrylic Denture Surface. Front Microbiol 2019; 10:1724. [PMID: 31456753 PMCID: PMC6701195 DOI: 10.3389/fmicb.2019.01724] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/12/2019] [Indexed: 12/12/2022] Open
Abstract
Considering the challenge to control Candida-associated denture stomatitis, the search for antifungal substances derived from natural sources has become a trend in the literature. In this study the following effects of Chenopodium ambrosioides extract (CAE) were investigated: action against biofilms of Candida albicans, its cytotoxic potential, and changes caused in acrylic resin. The CAE was characterized by High Performance Liquid Chromatography (HPLC). The susceptibility of C. albicans to CAE was investigated by Minimum Inhibitory Concentration and Minimum Fungicidal Concentration (MIC and MFC) tests. Acrylic resin disks were fabricated, and C. albicans biofilms were developed on these for 48 h. Afterward the disks were immersed for 10 min in: PBS (Negative Control); 1% Sodium Hypochlorite (1% SH, Positive Control) or CAE at MIC or 5xMIC. The biofilms were investigated relative to counts and metabolic activity. The cytotoxic potential in keratinocytes and fibroblasts was verified by MTT test. Change in color and roughness of the acrylic resin was analyzed after 28 days of immersion in CAE. The data were analyzed by the ANOVA considering a 5% level of significance. The main compounds detected by HPLC were kaempferol and quercetin. Both MIC and MFC obtained the value of 0.25 mg/mL. The MIC was sufficient to significantly reduce the counts and activity of the biofilm cells (p < 0.0001), while 5xMIC resulted in almost complete eradication, similar to 1% SH. Keratinocytes and fibroblasts exposed to the MIC and 5xMIC presented cell viability similar to that of the Control Group (p > 0.05). No important changes in acrylic resin color and roughness were detected, even after 28 days. It could be concluded that the immersion of acrylic resin in C. ambrosioides extract in its minimum inhibitory concentration was effective for the reduction of C. albicans biofilms without any evidence of cytotoxic effects or changes in roughness and color of this substrate.
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Affiliation(s)
| | | | | | - Letícia Torres Carvalho
- Department of Dentistry, Post-Graduate Program in Dentistry, CEUMA University, São Luís, Brazil
| | | | | | - Eduardo Martins de Sousa
- Department of Immunology and Microbiology of Respiratory Tract Infections, Post-Graduate Program in Parasite Biology, CEUMA University, São Luís, Brazil
| | | | | | - Rafael Soares Diniz
- Department of Dentistry, Post-Graduate Program in Dentistry, CEUMA University, São Luís, Brazil
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Miranda NB, de Arruda JAA, de Almeida SBM, dos Santos EG, Medeiros IS, Moreno A. Optical parameters and hardness of two maxillofacial elastomers after immersion in different solutions of Brazilian green propolis extract. J Prosthet Dent 2019; 122:168-175. [DOI: 10.1016/j.prosdent.2019.01.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 01/24/2019] [Accepted: 01/24/2019] [Indexed: 01/10/2023]
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Dayan C, Guven MC, Gencel B, Bural C. A Comparison of the Color Stability of Conventional and CAD/CAM Polymethyl Methacrylate Denture Base Materials. Acta Stomatol Croat 2019; 53:158-167. [PMID: 31341324 PMCID: PMC6604561 DOI: 10.15644/asc53/2/8] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objective The aim of this study was to evaluate the color stability of a heat polymerized resin, an auto-polymerizing resin, a urethane dimethacrylate resin and a CAD/CAM PMMA block resin stored in different storage media. Materials and methods 60 disc-shaped specimens (15×2 mm) were fabricated for each group. A total of 240 disc-shaped specimens were thermal-cycled for 5,000 cycles. Then specimens were randomized into 4 groups (n= 15) according to storage media: coffee, coke, red wine and distilled water (control group). The color measurement of each sample was performed using a spectrophotometer before and after storage (after 7 and 30 days), and color changes (ΔE) were calculated. Results All the denture base materials demonstrated dissimilar color changes after stored in the different storage media in both evaluation stages. In all storage media, CAD-CAM denture base resins showed the minimum in color change. In all denture base resins, red wine showed a higher degree of color change than coke or coffee. Conclusion The color stability of CAD-CAM denture base resins is better than any of the other kind of denture base resins. The color change values of all groups except Eclypse stored in red wine had clinically detectable values.
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Affiliation(s)
- Cagatay Dayan
- Program of Dental Technicians, Istanbul Cerrahpasa University, Istanbul, Turkey
| | - Melahat Celik Guven
- Department of Prosthodontics, Yeni Yüzyıl University Faculty of Dentistry, Istanbul, Turkey
| | - Burc Gencel
- Program of Dental Technicians, Istanbul Cerrahpasa University, Istanbul, Turkey
| | - Canan Bural
- Department of Prosthodontics, Istanbul University Faculty of Dentistry, Istanbul, Turkey
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Alp G, Johnston WM, Yilmaz B. Optical properties and surface roughness of prepolymerized poly(methyl methacrylate) denture base materials. J Prosthet Dent 2019; 121:347-352. [DOI: 10.1016/j.prosdent.2018.03.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 03/04/2018] [Accepted: 03/05/2018] [Indexed: 10/28/2022]
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Zoidis P, Polychronakis N, Lagouvardos P, Polyzois G, Ngo HC. Evaluation of a Realistic Cleansing Protocol for Preventing Discoloration of Denture Resins. J Prosthodont 2018; 28:e89-e95. [PMID: 29468768 DOI: 10.1111/jopr.12763] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2017] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To evaluate the efficacy of a realistic staining/cleansing protocol for long-term prevention of discoloration of denture base resins. MATERIALS AND METHODS Sixty discs (20 × 2.5 mm) of auto- and heat-polymerizing denture acrylic resins were fabricated following manufacturer's instructions, polished on one side and stored in water (37°C) for 24 hours before they were assigned randomly into 6 groups (3 for each material, n = 10) to receive 220 cycles of three immersion protocols. Group A was immersed in the following baths: (1) filtered coffee at 45°C for 2 minutes, (2) tap water at 24°C for 20 seconds, (3) as bath 1, (4) as bath 2, (5) Corega Extradent cleansing solution at 45°C for 3 minutes, and (6) water at 24°C for 20 seconds. Group B was immersed in the four first baths of group A (without cleansing action) and group C in bath 1 for the cumulative action of 20 cycles (80 minutes in 45°C coffee) and bath 2 for 40 seconds. A noncontact optical interferometric profilometer was used for qualitative evaluation of the specimens and a contact colorimeter to estimate color change values (ΔΕ*ab) at baseline and every 20 cycles in the baths for a total of 220 cycles. Data were statistically analyzed using a 2-way-repeated measures ANOVA with Bonferoni multiple comparisons and trend analysis at α = 0.05 level of significance. RESULTS Data indicated changes in color from 1.7 to 14.2 ΔΕ*ab units. The highest values were related to the number of cycles and group B immersion protocol. Significant differences were found among immersion protocols (p < 0.001) and immersion cycles (p < 0.001) with a significant interaction between protocols and cycles (p < 0.001) but not between denture resins (p = 0.991). CONCLUSION The evaluated protocol A was found effective in preventing color changes in both denture resins even after a long period of action. Protocol C had a much lower staining effect on both resins than protocol B and behaved similarly to protocol A until 140 to 160 cycles. Therefore, it is probably not appropriate for use in short-term color stability experiments.
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Affiliation(s)
- Panagiotis Zoidis
- Department of Prosthodontics, Dental School, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos Polychronakis
- Department of Prosthodontics, Dental School, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiotis Lagouvardos
- Department of Operative Dentistry, Dental School, National and Kapodistrian University of Athens, Athens, Greece
| | - Gregory Polyzois
- Department of Prosthodontics, Dental School, National and Kapodistrian University of Athens, Athens, Greece
| | - Hien Chi Ngo
- Department of Preventive and Restorative Dentistry, College of Dental Medicine, University of Sharjha, Sharjha, United Arab Emirates
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Altinci P, Durkaya P. Effects of thermocycling and various drinks on the color stability of heat-polymerized acrylic resin. J Istanb Univ Fac Dent 2016; 50:15-20. [PMID: 28955571 PMCID: PMC5573510 DOI: 10.17096/jiufd.28587] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 04/12/2016] [Indexed: 12/12/2022] Open
Abstract
Purpose: The discoloration of acrylic resin denture bases may lead to significant esthetic problems. The aim of this in vitro study was to
investigate the effects of frequently consumed drinks on the color changes of fresh and aged, heat-polymerized, conventional acrylic resin. Materials and Methods: Eighty-four, heat-polymerized acrylic resin specimens (4 mm x 5 mm x 30 mm) were fabricated. Half of the specimens were aged by
thermal cycling (between 5°C and 55°C, 60-second dwell time, 3000 cycles). The specimens were stored at 37°C in different drinks as non-aged and aged subgroups
including water (control group), black tea, green tea, sour cherry juice, coke and coffee (n=7). The discoloration of each specimen after 1 and 7 days storage in the
drinks were measured by a colorimeter based on CIE Lab system. The data of colour differences (ΔE) were analyzed by ANOVA and Dunnet’s tests. Results: Thermal cycling and storage in water induced a slight color change. The highest ΔE values were observed in the aged groups, which was also
noticeable for black tea and sour cherry juice after 7 days of storage (ΔE>1.5) (p<0.05). The ΔE values of all test groups were detected within the acceptable
clinical limits (ΔE<3.5). Conclusion: These results suggest that the color stability of denture base acrylic resins is influenced by ageing. Black tea, sour cherry juice and
coke can cause significant discolorations on acrylic resin denture bases.
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Affiliation(s)
- Pinar Altinci
- Department of Biomaterials Science, Institute of Dentistry, University of Turku Finland
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Madeira PLB, Carvalho LT, Paschoal MAB, de Sousa EM, Moffa EB, da Silva MADS, Tavarez RDJR, Gonçalves LM. In vitro Effects of Lemongrass Extract on Candida albicans Biofilms, Human Cells Viability, and Denture Surface. Front Cell Infect Microbiol 2016; 6:71. [PMID: 27446818 PMCID: PMC4923188 DOI: 10.3389/fcimb.2016.00071] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 06/16/2016] [Indexed: 11/13/2022] Open
Abstract
The purpose of this study was to investigate whether immersion of a denture surface in lemongrass extract (LGE) has effects on C. albicans biofilms, human cell viability and denture surface. Minimal inhibitory concentration (MIC) and minimal fungicidal concentration (MFC) were performed for LGE against C. albicans. For biofilm analysis, discs were fabricated using a denture acrylic resin with surface roughness standardization. C. albicans biofilms were developed on saliva-coated discs, and the effects of LGE at MIC, 5XMIC, and 10XMIC were investigated during biofilm formation and after biofilm maturation. Biofilms were investigated for cell counting, metabolic activity, and microscopic analysis. The cytotoxicity of different concentrations of LGE to peripheral blood mononuclear cells (PBMC) was analyzed using MTT. The effects of LGE on acrylic resin were verified by measuring changes in roughness, color and flexural strength after 28 days of immersion. Data were analyzed by ANOVA, followed by a Tukey test at a 5% significance level. The minimal concentration of LGE required to inhibit C. albicans growth was 0.625 mg/mL, while MFC was 2.5 mg/mL. The presence of LGE during biofilm development resulted in a reduction of cell counting (p < 0.05), which made the MIC sufficient to reduce approximately 90% of cells (p < 0.0001). The exposure of LGE after biofilm maturation also had a significant antifungal effect at all concentrations (p < 0.05). When compared to the control group, the exposure of PBMC to LGE at MIC resulted in similar viability (p > 0.05). There were no verified differences in color perception, roughness, or flexural strength after immersion in LGE at MIC compared to the control (p > 0.05). It could be concluded that immersion of the denture surface in LGE was effective in reducing C. albicans biofilms with no deleterious effects on acrylic properties at MIC. MIC was also an effective and safe concentration for use.
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Affiliation(s)
| | | | | | - Eduardo M de Sousa
- Post-Graduate Program in Parasite Biology, CEUMA University São Luis, Brazil
| | - Eduardo B Moffa
- Post-Graduate Program in Dentistry, CEUMA University São Luis, Brazil
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Ural Ç, Duran İ, Tatar N, Öztürk Ö, Kaya İ, Kavut İ. The effect of amine-free initiator system and the polymerization type on color stability of resin cements. J Oral Sci 2016; 58:157-61. [DOI: 10.2334/josnusd.15-0619] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Çağrı Ural
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayıs University
| | - İbrahim Duran
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayıs University
| | - Numan Tatar
- Department of Prosthodontics, Faculty of Dentistry, Abant Izzet Baysal University
| | - Özgür Öztürk
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayıs University
| | - İsmail Kaya
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayıs University
| | - İdris Kavut
- Department of Prosthodontics, Faculty of Dentistry, Ondokuz Mayıs University
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Lohitha K, Prakash M, Gopinadh A, Sai Sankar AJ, Sandeep CH, Sreedevi B. Color Stability of Heat-cure Acrylic Resin Subjected to Simulated Short-term Immersion in Fast-acting Denture Cleansers. Ann Med Health Sci Res 2016; 6:291-295. [PMID: 28503346 PMCID: PMC5414441 DOI: 10.4103/amhsr.amhsr_64_16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background: Regular usage of denture cleansers is recommended in complete denture wearers for effective plaque control, and these cleansers alter the physical properties of acrylic resin over a period of time. Thus, an in vitro study was carried out to assess the effect of denture cleansers on the color stability of heat-cure denture base resin. Aim: The aim of the present study was to evaluate the effect of commercially available fast-acting denture cleansers on the color stability of heat-cure denture base resin at different time intervals. Materials and Methods: Thirty-six heat-cure acrylic resin (Ivoclar Triplex Hot-V) specimens are randomly allocated into four groups – Group A (distilled water as control); Group B (polident – 3 min); Group C (fixodent scope plus); and Group D (stain away plus) comprising of nine samples each. After recording the baseline values, the specimens were immersed in their respective cleansing solutions for a prescribed time interval. This procedure was repeated daily, and the color change (ΔE) was evaluated after 90 and 180 days interval using a colorimeter in a standard “Commission International de l'Eclairage” color system. Statistical Analysis Used: Paired t-test and Dunnett's T3 test. Results: All the groups exhibited a variable color change (ΔE) for an immersion period of 90 days. However, significant color differences (P = 0.001) were noticed among the test groups after 180 days. Conclusion: The color change of denture base resin was greater for Group D followed by Groups B, C, and A respectively after 180 days of immersion. The ΔE values of all test groups increased with time.
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Affiliation(s)
- K Lohitha
- Department of Prosthodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - M Prakash
- Department of Prosthodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - A Gopinadh
- Department of Prosthodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - A J Sai Sankar
- Department of Pedodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - C H Sandeep
- Department of Prosthodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
| | - B Sreedevi
- Department of Prosthodontics, Sibar Institute of Dental Sciences, Guntur, Andhra Pradesh, India
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Barão VAR, Ogawa ES, Moreno A, Mesquita MF, Wee AG, Assunção WG. Long-term clinical evaluation of the color stability and stainability of acrylic resin denture teeth. J Prosthet Dent 2015; 113:628-35. [DOI: 10.1016/j.prosdent.2015.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 10/23/2022]
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Paravina RD, Ghinea R, Herrera LJ, Bona AD, Igiel C, Linninger M, Sakai M, Takahashi H, Tashkandi E, Mar Perez MD. Color Difference Thresholds in Dentistry. J ESTHET RESTOR DENT 2015; 27 Suppl 1:S1-9. [DOI: 10.1111/jerd.12149] [Citation(s) in RCA: 453] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Rade D. Paravina
- Department of Restorative Dentistry and Prosthodontics; School of Dentistry; University of Texas; Houston TX USA
- Houston Center for Biomaterials and Biomimetics (HCBB); Houston TX USA
| | - Razvan Ghinea
- Department of Optics; University of Granada Faculty of Sciences; Granada Spain
| | - Luis J. Herrera
- Department of Computer Architecture and Computer Technology; School of Information Technology and Telecommunications Engineering; University of Granada Higher Technical; Granada Spain
| | - Alvaro D. Bona
- School of Dentistry; University of Passo Fundo; Passo Fundo Brazil
| | - Christopher Igiel
- University Medical Center; Johannes Gutenberg University; Mainz Germany
| | - Mercedes Linninger
- Department of Prosthodontics; Semmelweis University Faculty of Dentistry; Budapest Hungary
| | - Maiko Sakai
- Department of Restorative Dentistry and Biomaterials Sciences; Harvard University School of Dental Medicine; Boston MA USA
| | - Hidekazu Takahashi
- Oral Biomaterials Engineering; Faculty of Dentistry; Tokyo Medical and Dental University; Tokyo Japan
| | - Esam Tashkandi
- Department of Prosthodontics; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Maria del Mar Perez
- Department of Optics; University of Granada Faculty of Sciences; Granada Spain
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Bohra PK, Ganesh PR, Reddy MM, Ebenezar AVR, Sivakumar G. Colour stability of heat and cold cure acrylic resins. J Clin Diagn Res 2015; 9:ZC12-5. [PMID: 25738078 DOI: 10.7860/jcdr/2015/11620.5400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 11/29/2014] [Indexed: 11/24/2022]
Abstract
INTRODUCTION To evaluate the colour stability of heat and cold cure acrylic resins under simulated oral conditions with different colorants. MATERIALS AND METHODS Three different brands of heat cure acrylic resin and two rapid cure auto polymerizing acrylic resin of commercial products such as Trevelon Heat Cure (THC), DPI Heat cure (DHC), Pyrax Heat Cure (PHC), DPI Cold cure (DCC) and Acralyn-R-Cold cure (ACC) have been evaluated for discoloration and colour variation on subjecting it to three different, commonly employed food colorants such as Erythrosine, Tartarizine and Sunset yellow. In order to simulate the oral condition the food colorants were diluted with artificial saliva to the samples taken up for the study. These were further kept in an incubator at 37°C ± 1°C. The UV-visible spectrophotometer has been utilized to evaluate the study on the basis of CIE L* a* b* system. The prepared samples for standard evaluation have been grouped as control group, which has been tested with a white as standard, which is applicable for testing the colour variants. RESULTS The least colour changes was found to be with Sunset Yellow showing AE* value of 3.55 with heat cure acrylic resin branded as PHC material and the highest colour absorption with Tartarizine showing AE* value of 12.43 in rapid cure autopolymerzing acrylic resin material branded as ACC material. CONCLUSION ACC which is a self cure acrylic resin shows a higher colour variation to the tartarizine food coloration. There were not much of discoloration values shown on the denture base resins as the food colorants are of organic azodyes.
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Affiliation(s)
- Pavan Kumar Bohra
- Professor, Department of Prosthodontics, Madha Dental College , Chennai, India
| | - P R Ganesh
- Professor and Head, Department of Prosthodontics, Madha Dental College , Chennai, India
| | - Madan Mohan Reddy
- Professor and Head, Department of Prosthodontics, Teja Dental College , Tirupati, India
| | - A V Rajesh Ebenezar
- Professor, Department of Conservative Dentistry and Endodontics, Madha Dental College , Chennai, India
| | - G Sivakumar
- Professor and Head, Department of Oral Pathology and Oral Microbiology, Madha Dental College , Chennai, India
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