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Kırmalı Ö, Sekmen T, Karaarslan A. Push-out bond strength of various surface treatments on fiber post to root canal dentine using different irrigation techniques. Microsc Res Tech 2021; 84:2024-2033. [PMID: 33749061 DOI: 10.1002/jemt.23758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/13/2021] [Accepted: 03/09/2021] [Indexed: 11/11/2022]
Abstract
To compare the efficacy of different surface treatments (fiber post) with laser activated irrigation (LAI) technique (various root canal solutions) on root canal dentine in terms of push-out bond strength (PBS) in a fiber post. In this study, 200 premolars were assigned into groups according to various irrigation techniques: 2.5% sodium hypochlorite (NaOCl), 17% ethylene diamine tetra acetic acid (EDTA), and 17% EDTA + LAI. In addition, the fiber posts were separated into five groups, (n = 30) according to the surface pretreatment performed: sandblasting, hydrofluoric acid (HF), Erbium, Chromium:Yttrium Scandium-Gallium-Garnet (Er,Cr:YSGG) laser, Neodymium-Doped Yttrium Aluminum Garnet (Nd,YAG) laser and as untreated surface. The posts were cemented using dual-cure resin cement and subjected to a PBS test. Data were analyzed by one way-ANOVA, Tukey, and Tamhane T2 tests. The PBS values were increased in all parts of the tooth in the EDTA and EDTA + LAI treated groups and in groups treated with Er,Cr:YSGG laser fiber posts. In groups in which EDTA and EDTA + LAI were applied, it was observed that dentinal tubules were open according to the distribution and number of dentinal tubule configurations. The improvement of the PBS between fiber post/resin cement/root dentine was observed via the use of fiber post surface treatments with different irrigation techniques.
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Affiliation(s)
- Ömer Kırmalı
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | | | - Ayşegül Karaarslan
- Department of Restorative Dentistry, Faculty of Dentistry, Erzincan Binali Yıldırım University, Erzincan, Turkey
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Davoudi A, Shadmehr E, Savoj M, Akhavan-Khaleghi M, Tabesh M, Zakizade M, Ebadian B. Laser Treatment of Fiber Post and Final Push-Out Bond Strength: A Systematic Review and Meta-Analysis. PHOTOBIOMODULATION PHOTOMEDICINE AND LASER SURGERY 2020; 39:321-333. [PMID: 33275497 DOI: 10.1089/photob.2020.4809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Purpose: This review article tries to answer this question: "What are the effects of laser surface treatment of fiber posts (FPs), compared with other surface roughening methods, on bond strength of cemented FPs?" Methods: Search was carried out in six electronic databases by focusing on defined key words. Related titles and abstracts, up to March 2019, were collected, read, and selected for quality assessments. A total of 2408 articles were included in the study at the initial stage of the searching phase. Results: Finally, seven studies were recognized to be reliable to be reviewed and meta data analysis in the study. All the studies were in vitro with a total of 340 samples. None of the Er:YAG (-0.27, 95% CI: -2.29 to 1.76; p = 0.79) and Er,Cr:YSGG (-0.04, 95% CI: -1.43 to 1.35; p = 0.95) treated samples showed any significant overall mean differences in final push-out bond strength (PBS) compared with the control groups. Conclusions: Laser pretreatment of FP surfaces might not be effective in providing high PBS. FP surface are susceptible to damage of high-level laser irradiation and might show decreased bond strength.
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Affiliation(s)
- Amin Davoudi
- Department of Prosthodontics, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Elham Shadmehr
- Department of Endodontics, School of Dentistry, UCSF Preventive & Restorative Dental Science, San Francisco, California, USA
| | - Melika Savoj
- Dental Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehrdad Akhavan-Khaleghi
- Department of Prosthodontics, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahtab Tabesh
- Dental Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mehrnaz Zakizade
- Department of Orthodontics, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Behnaz Ebadian
- Department of Prosthodontics, Dental Implants Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
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Kırmalı Ö, Akçakuş Battal T, Turker N, Dündar A. Mechanical properties of glass-fibre-reinforced composite posts after laser irradiation with different energy densities. AUST ENDOD J 2020; 47:34-42. [PMID: 33002287 DOI: 10.1111/aej.12443] [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: 05/21/2020] [Revised: 08/03/2020] [Accepted: 09/02/2020] [Indexed: 11/26/2022]
Abstract
The aim of the present study was to evaluate the effect of the surface treatments on flexural strengths and flexural modulus of glass-fibre-reinforced composite (GFRC) posts. Sixty-three posts were randomly divided into 9 groups (n = 7), and various surface treatments were performed. The control group was left untreated. Other groups were treated with 9% hydrofluoric acid, sandblasting with 120 µm Al2 O3 particles and Er,Cr:YSGG laser irradiation with different powers (1 W, 2 W, 3 W, 4 W, 5 W and 6 W). The samples were subjected to 3-point bending test, and data were calculated. Statistical analysis was performed. The flexural strengths of fibre posts treated with sandblasting, hydrofluoric acid, 1 W and 2 W laser were statistically similar with control group (P > 0.01). However, the flexural strength of fibre posts treated with 3 W, 4 W, 5 W and 6 W laser was statistically lower than control group (P < 0.01). High laser irradiations cause melting on the post surface and breaks in fibrils.
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Affiliation(s)
- Ömer Kırmalı
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Tuba Akçakuş Battal
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Nurullah Turker
- Department of Prosthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Ayşe Dündar
- Department of Restorative Dentistry, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
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Rezaei-Soufi L, Tapak L, Forouzande M, Fekrazad R. Effects of motion direction and power of Er,Cr:YSGG laser on pull-out bond strength of fiber post to root dentin in endodontically-treated single-canal premolar teeth. Biomater Res 2019; 23:17. [PMID: 31788326 PMCID: PMC6858750 DOI: 10.1186/s40824-019-0165-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/20/2019] [Indexed: 12/23/2022] Open
Abstract
Background Inadequate retention and gradual debonding of intracanal post from root dentin is a major cause of failure of endodontically treated teeth restored with fiber post. Main body This study aimed to assess the effect of surface treatment of quartz fiber posts with different powers and motion directions of Er,Cr:YSGG laser on their pull-out bond strength to root dentin in endodontically treated premolar teeth. In this study, 105 fiber posts were divided into 7 groups according to their surface treatment with different powers of Er,Cr:YSGG laser at 2780 nm wavelength, 20 Hz frequency and 150 μs pulse duration in circumferential (C) or longitudinal (L) motion directions: Control group (no treatment), 0.5 W laser in longitudinally (L0.5), 1.0 W laser in longitudinally (L1), 1.5 W laser in longitudinally (L1.5), 0.5 W laser in circumferentially (C0.5), 1.0 W laser in circumferentially (C1) and 1.5 W laser in circumferentially (C1.5). After cementation, pull-out bond strength was measured in Newton (N). Each sample was inspected under a stereomicroscope at × 25 magnification to determine the mode of failure. Two samples of each group were inspected under a scanning electron microscope (SEM). Data were analyzed using two-way ANOVA and Tukey’s test with significant level of 0.05. The pull-out bond strength of 0.5 W groups had significant differences with the control group (P = 0.009). The bond strength of 1.0 W and 1.5 W groups were not significantly different (P = 0.630) but were higher than the control and 0.5 W groups (P < 0.001). Motion direction of laser irradiation had no significant effect on the bond strength (P = 0.384). The interaction effect of power and motion direction of laser irradiation had no significant effect on the bond strength (P = 0.092). Conclusion Fiber posts treated with 0.5, 1.0 and 1.5 W Er,Cr:YSGG laser showed higher bond strength to dentin compared to posts with no surface treatment. However, the motion directions of laser irradiation had no significant effect on the bond strength. In order to minimize damage to post surface and achieving maximum bond strength, longitudinal surface treatment of posts with 1.0 W power of Er,Cr:YSGG laser is recommended.
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Affiliation(s)
- Loghman Rezaei-Soufi
- 1Department of Restorative Dentistry, Dental Research Center, Dental Faculty, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Leili Tapak
- 2Department of Biostatistics, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mahsa Forouzande
- 3Department of Restorative Dentistry, Dental Faculty, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Reza Fekrazad
- 4Department of Periodontology, Laser Research Center in Medical Sciences, Dental Faculty, AJA University of Medical Sciences, Tehran, Iran
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Influence of Er,Cr:YSGG Laser Irradiation on the Push-Out Bond Strength of Zirconia and Glass Fiber Posts with Radicular Dentin. Int J Biomater 2019; 2019:4869853. [PMID: 31687028 PMCID: PMC6803723 DOI: 10.1155/2019/4869853] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/27/2019] [Accepted: 08/31/2019] [Indexed: 01/12/2023] Open
Abstract
Objective This in vitro study was designed to evaluate the influence of an Er,Cr:YSGG laser on the bond strength of zirconia and glass fiber posts with root dentin. Materials and methods Ninety extracted single-rooted human teeth were randomized into 6 groups (n = 15/group) on the basis of different posts (zirconia/glass fiber) and Er,Cr:YSGG laser tips (axial and radial). Specimens were prepared for push-out testing with the help of a cutting machine; six slices (2 on each cervical, middle, and apical) of approximately 1 mm thickness were sectioned for all roots on a plane perpendicular to the long axis of the post. All specimens were placed into a universal testing machine with a defined 0.5 mm/min crosshead speed until the maximum failure load was obtained. Results The highest mean push-out bond strength of the glass fiber and zirconia groups was achieved with laser treatment. The highest push-out bond strength was achieved with the axial fiber tip (7.63 ± 1.22 MPa), and the lowest was achieved with a radial fiber tip of the glass fiber group (6.98 ± 0.96 MPa). ANOVA showed a statistically significant difference between the groups (p = 0.041). The mean push-out bond strength was found to be higher with an axial fiber tip for both cervical and apical segments in the glass fiber and zirconia groups (p < 0.05). The independent t-test resulted in the overall highest mean push-out bond strength in the apical segments (p = 0.026). Conclusion Within the limits of the present in vitro research study, an enhancement in the push-out bond strength of resin cement, mainly in the cervical region of the root canal, was achieved after irradiation with an Er,Cr:YSGG laser using an axial fiber tip.
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Davoudi A, Mosharraf R, Akhavan A, Zarei F, Pourarz S, Iravani S. Effect of laser irradiation on push-out bond strength of dental fiber posts to composite resin core buildups: A systematic review and meta-analysis. Photodiagnosis Photodyn Ther 2019; 27:184-192. [PMID: 31163283 DOI: 10.1016/j.pdpdt.2019.05.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 04/29/2019] [Accepted: 05/31/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND The bonding of fiber posts (FPs) to composite resin core buildups is a challenge due to limited penetration of resin to the polymeric matrix of FPs. This review article tries to answer this question: "What are the effects of laser surface treatment of FPs, compared to other surface roughening methods, on push-out bond strength (PBS) of FPs bonded to composite resin core buildups?" METHODS Searches were run in seven electronic databases with a focus on proper key words. Related titles and abstracts, up to February 2019, were screened, selected, read and subjected to quality assessments. RESULTS After the initial search, a total of 2635 articles were included in the study. Finally, 6 studies were reliable enough in methodology to be included. All the studies were in vitro with a total of 359 samples. Er:YAG (-0.05, 95% CI: -2.96 to 2.86; P = 0.97) and Er,Cr:YSGG (0.84, 95% CI: -0.12 to 1.81; P = 0.08) treated samples showed no significant overall mean differences in final PBS compared to the control groups. Moreover, pretreatment with Er,Cr:YSGG laser and sandblasting with 50 μm alumina showed an overall mean difference of -0.42 for PBS (95% CI: -1.23 to 0.39) with no significant differences. CONCLUSIONS Laser irradiation of FPs seems to provide no significant increase in PBS values of FPs bonded to composite resin core buildups. Effects of surface treatment of FPs with laser irradiation and sandblasting with 50 μm alumina might be similar in increasing the final PBS, either.
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Affiliation(s)
- Amin Davoudi
- Department of Prosthodontics, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ramin Mosharraf
- Dental Materials Research Center, Department of Prosthodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Ali Akhavan
- Dental Materials Research Center, Department of Endodontics, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fardin Zarei
- Department of Periodontics, Dental School, Gilan University of Medical Sciences, Gilan, Iran
| | - Sobhan Pourarz
- Department of Oral and Maxillofacial Surgery, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shiva Iravani
- Department of Endodontics, School of Dentistry, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Garcia PP, da Costa RG, Garcia AV, Gonzaga CC, da Cunha LF, Rezende CEE, Correr GM. Effect of surface treatments on the bond strength of CAD/CAM fiberglass posts. J Clin Exp Dent 2018; 10:e591-e597. [PMID: 29930778 PMCID: PMC6005091 DOI: 10.4317/jced.54904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 04/26/2018] [Indexed: 11/25/2022] Open
Abstract
Background There is no ideal protocol for the surface treatment of fiber posts, especially when using a computer-aided design/computer-aided manufacturing (CAD/CAM) experimental fiberglass block. The purpose of this study was to evaluate the bond strength of a CAD/CAM customized glass fiber post and core after applying different surface treatment techniques. Material and Methods Forty premolars were prepared to receive a customized CAD/CAM glass-fiber post and core obtained from an experimental block of glass fiber and epoxy resin. The specimens were randomly distributed in 4 groups (n=10) according to the post and core surface treatment: ETH - 70% ethanol; HP - 24% hydrogen peroxide for 1 minute; ETH/S - 70% ethanol + silane; HP/S - 24% hydrogen peroxide + silane. The universal adhesive containing silane was applied on the posts and prepared post spaces in all groups. The posts were cemented using dual cure resin cement. The specimens were stored in distilled water at 37°C for 24 h, cut (two slices of 1 mm for each root third - coronal, middle, and apical) and subjected to push-out test (0.5 mm/min). Data was subjected to two-way ANOVA (surface treatment and root third) and Tukey’s test (α=0,05). Results There was no significant difference of bond strength values among groups, regardless the surface treatment (p >0.05). There was significant difference on bond strength values for the different root thirds (p<0.05) (coronal>middle=apical). Conclusions The different surface treatment and application of additional silane in the CAD/CAM customized glass-fiber post and core does not interfere on bond strength values. The root dentin third interfered on the bond strength, with higher values for the coronal third. Key words:Post and core technique, cad/cam, shear strength, hydrogen peroxide.
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Affiliation(s)
- Paula-Pontes Garcia
- Graduate Student, Graduate Program in Dentistry, Universidade Positivo, Rua Pedro Viriato Parigot de Souza, 5300, Curitiba, PR, Brazil
| | - Rogério-Goulart da Costa
- Professor, Dental Prosthesis, Federal Institute for Science and Technology of Paraná, Rua João Negrão 1258, Curitiba, PR, Brazil
| | - André-Vivan Garcia
- Graduate Student, Graduate Program in Dentistry, Universidade Positivo, Rua Pedro Viriato Parigot de Souza, 5300, Curitiba, PR, Brazil
| | - Carla-Castiglia Gonzaga
- PhD Professor, Graduate Program in Dentistry, Universidade Positivo, Rua Pedro Viriato Parigot de Souza, 5300, Curitiba, PR, Brazil
| | - Leonardo-Fernandes da Cunha
- PhD Professor, Graduate Program in Dentistry, Universidade Positivo, Rua Pedro Viriato Parigot de Souza, 5300, Curitiba, PR, Brazil
| | - Carlos-Eduardo-Edwards Rezende
- PhD Professor, Graduate Program in Dentistry, Universidade Positivo, Rua Pedro Viriato Parigot de Souza, 5300, Curitiba, PR, Brazil
| | - Gisele-Maria Correr
- PhD Professor, Graduate Program in Dentistry, Universidade Positivo, Rua Pedro Viriato Parigot de Souza, 5300, Curitiba, PR, Brazil
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Hashemikamangar SS, Hasanitabatabaee M, Kalantari S, Gholampourdehaky M, Ranjbaromrani L, Ebrahimi H. Bond Strength of Fiber Posts to Composite Core: Effect of Surface Treatment With Er,Cr:YSGG Laser and Thermocycling. J Lasers Med Sci 2018; 9:36-42. [PMID: 29399310 DOI: 10.15171/jlms.2018.09] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: This study aimed to determine the bond strength of fiber post to composite core following surface treatment with Er,Cr:YSGG laser at different powers and sandblasting with and without thermocycling. Methods: In this experimental study, 30 fiber posts (Glassix, Nordin, Switzerland) were randomly divided into 5 groups of sandblasting, no treatment and laser irradiation at 1, 1.5 and 2 W powers. Following composite filling and mounting, 1-mm thick sections were made for pushout bond strength testing. Half of the samples in each group were subjected to thermocycling (n=15). Two-way analysis of variance (ANOVA) was used to analyze the bond strength values. Pairwise comparisons were made using Tukey test (P<0.05). Results: Effect of treatment method on push-out bond strength of fiber post to composite core was significant (P=0.017), while thermocycling had no significant effect on bond strength (P=0.964). Pairwise comparison of surface treatment methods revealed no significant difference in groups with and without thermocycling (P>0.05), but Er,Cr:YSGG laser irradiation with 1 W power yielded significantly higher bond strength than the control group (P=0.01). Conclusion: Irradiation of Er,Cr:YSGG laser at 1 W power increased the bond strength of fiber post to composite core. Thermocycling slightly decreased the bond strength at the fiber postcore interface.
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Affiliation(s)
| | | | - Saman Kalantari
- Operative Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrzad Gholampourdehaky
- Internal Medicine and Endocrinology, Medical Faculty, Aja University of Medical Sciences, Tehran, Iran
| | - Ladan Ranjbaromrani
- Operative Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Hooman Ebrahimi
- Laser Research Center, School of Dentistry, Tehran University Of Medical Sciences, International Campus, Tehran, Iran
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Kırmalı Ö, Üstün Ö, Kapdan A, Kuştarcı A. Evaluation of Various Pretreatments to Fiber Post on the Push-out Bond Strength of Root Canal Dentin. J Endod 2017; 43:1180-1185. [DOI: 10.1016/j.joen.2017.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/02/2017] [Accepted: 03/06/2017] [Indexed: 10/19/2022]
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Gomes KGF, Faria NS, Neto WR, Colucci V, Gomes EA. Influence of laser irradiation on the push-out bond strength between a glass fiber post and root dentin. J Prosthet Dent 2017; 119:97-102. [PMID: 28461044 DOI: 10.1016/j.prosdent.2017.01.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 01/05/2017] [Accepted: 01/05/2017] [Indexed: 11/25/2022]
Abstract
STATEMENT OF PROBLEM A major issue related to the failure of endodontically treated teeth restored with an intraradicular post is gradual debonding of the glass fiber post, resin cement, and dentin. PURPOSE The purpose of this in vitro study was to evaluate the influence of laser irradiation on the push-out bond strength of glass fiber posts to radicular dentin. MATERIAL AND METHODS Thirty-two mandibular bovine incisors were endodontically treated and divided into 4 groups according to the surface treatment of the post: silane control (GC); irradiation with Er:YAG (GYAG); irradiation with Er,Cr:YSGG (GCR); and 980-nm diode laser (GDI) application. After surface treatment, the glass fiber posts were cemented with dual adhesive resin cement. To evaluate bond strength, the specimens were subjected to a push-out test at a crosshead speed of 0.5 mm/min using a universal testing machine. Failure mode was analyzed using stereomicroscopy. The surface morphology was evaluated qualitatively after surface treatment by using confocal laser microscopy. The push-out test data (MPa) were analyzed using a linear mixed effects model and the Bonferroni test (α=.05). RESULTS At the cervical third, no significant differences were observed between the GC and GCR groups (P=1.00), and both of the groups exhibited higher bond strength. At the middle and apical thirds, the GCR group revealed higher bond strength, which was significantly different from that observed in all other groups (P<.05). No statistical differences were observed among the other tested protocols (GC, GYAG, and GDI groups; P=1.00). Adhesive failure was predominant in all groups. CONCLUSIONS Irradiation with Er,Cr:YSGG improved the bond strength of the cement-post-dentin interfaces.
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Affiliation(s)
- Karla G F Gomes
- Postgraduate student, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Natália S Faria
- Doctoral student, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Walter R Neto
- Professor, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Vivian Colucci
- Professor, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil
| | - Erica A Gomes
- Professor, School of Dentistry, University of Ribeirão Preto, São Paulo, Brazil.
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Yilmaz HG, Albaba MR, Caygur A, Cengiz E, Boke-Karacaoglu F, Tumer H. Treatment of recurrent aphthous stomatitis with Er,Cr:YSGG laser irradiation: A randomized controlled split mouth clinical study. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 170:1-5. [PMID: 28359996 DOI: 10.1016/j.jphotobiol.2017.03.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/07/2017] [Accepted: 03/16/2017] [Indexed: 11/28/2022]
Abstract
The present randomized controlled split mouth clinical study aimed to investigate the efficacy of Er,Cr:YSGG laser irradiation on pain reduction and healing rate of recurrent aphthous stomatitis. 40 patients with RAS were recruited for this study and RAS ulcerations of each patient were randomly assigned to the control or test group. In the test group, Er,Cr:YSGG laser with non-contact mode was used to irradiate RAS lesions. In the placebo group, RAS lesions were irradiated with the same device without laser emission. Pain was evaluated with visual analog scale (VAS) while a clinician graded healing of RAS (HRAS). In the placebo group at immediate; scores of VAS presented no statistically significance; in the test group, laser application showed significant pain reducing, at 1st day control. In the test group, a significantly healing effect at 1st day control was observed and this effect was maintained throughout the study. In the placebo group, scores of HRAS were statistically significant at controls on 3, 7, 10days. Statistically significant difference between the scores of VAS and HRAS was found for all control days except day 10 according to the intergroup comparisons. Based on these findings, Er,Cr:YSGG laser application at 0.25W without water may be appropriate to reduce pain and also accelerate the healing of RAS.
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Affiliation(s)
- Hasan Guney Yilmaz
- Department of Periodontology, Faculty of Dentistry, Near East University, Mersin, Turkey.
| | - Mohammed Rateb Albaba
- Department of Periodontology, Faculty of Dentistry, Near East University, Mersin, Turkey
| | - Ayse Caygur
- Department of Periodontology, Faculty of Dentistry, Near East University, Mersin, Turkey
| | - Esra Cengiz
- Department of Restorative Dentistry, Faculty of Dentistry, Mersin University, Mersin, Turkey
| | - Fatma Boke-Karacaoglu
- Department of Periodontology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Hayriye Tumer
- Department of Periodontology, Faculty of Dentistry, Near East University, Mersin, Turkey
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Barbosa Siqueira C, Spadini de Faria N, Raucci-Neto W, Colucci V, Alves Gomes E. Evaluation of Mechanical Properties of Glass Fiber Posts Subjected to Laser Surface Treatments. Photomed Laser Surg 2016; 34:460-466. [PMID: 27564314 DOI: 10.1089/pho.2016.4144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the influence of laser irradiation on flexural strength, elastic modulus, and surface roughness and morphology of glass fiber posts (GFPs). BACKGROUND DATA Laser treatment of GFPs has been introduced to improve its adhesion properties. MATERIALS AND METHODS A total of 40 GFPs were divided into 4 groups according to the irradiation protocol: GC-no irradiation, GYAG-irradiation with erbium:yttrium-aluminum-garnet [Er:YAG], GCR-irradiation with erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG), and GDI-irradiation with diode laser. The GFP roughness and morphology were evaluated through laser confocal microscopy before and after surface treatment. Three-point bending flexural test measured flexural strength and elastic modulus. Data about elastic modulus and flexural strength were subjected to one-way ANOVA and Bonferroni test (p < 0.05). The effect of roughness was evaluated using the linear mixed effects model and Bonferroni test (p < 0.05). RESULTS Laser treatment changed surface roughness in the groups GCR (p = 0.000) and GDI (p = 0.007). The mean flexural strength in GYAG (995.22 MPa) was similar to that in GC (980.48 MPa) (p = 1.000) but different from that in GCR (746.83 MPa) and that in GDI (691.34 MPa) (p = 0.000). No difference was found between the groups GCR and GDI (p = 0.86). For elastic modulus: GYAG (24.47 GPa) was similar to GC (25.92 GPa) (p = 1.000) but different from GCR (19.88 GPa) (p = 0.002) and GDI (17.20 GPa) (p = 0.000). CONCLUSIONS The different types of lasers, especially Er,Cr:YSGG and 980 ηm diode, influenced the mechanical properties of GFPs.
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Affiliation(s)
| | | | - Walter Raucci-Neto
- School of Dentistry, University of Ribeirão Preto , Ribeirão Preto, Brazil
| | - Vivian Colucci
- School of Dentistry, University of Ribeirão Preto , Ribeirão Preto, Brazil
| | - Erica Alves Gomes
- School of Dentistry, University of Ribeirão Preto , Ribeirão Preto, Brazil
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