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Almohareb T, Al Ahdal K, Maawadh AM, Al Deeb L, Alshamrani AS, Alrahlah A. Bleached enamel reversal using grape seed extract, green tea, curcumin-activated photodynamic therapy, and Er: YAG on microleakage and bond integrity of composite material bonded to the enamel surface. Photodiagnosis Photodyn Ther 2024; 45:103943. [PMID: 38145770 DOI: 10.1016/j.pdpdt.2023.103943] [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: 11/17/2023] [Revised: 11/30/2023] [Accepted: 12/18/2023] [Indexed: 12/27/2023]
Abstract
AIMS Bleached enamel reversal using antioxidants sodium ascorbate (SA), Green tea extract (GTE), grape seed extract (GSE), Curcumin photosensitizer (CP) and Er: YAG laser on the adhesive strength and marginal leakage of composite material bonded to the bleached enamel surface. MATERIALS AND METHODS Enamel surface of hundred and twenty sound human first premolar teeth was cleansed using pumice and bleached with 35 % hydrogen peroxide. The samples were randomly divided into 5 groups based on the antioxidants used. n = 20 Group 1 (Control): No antioxidant agent, Group 2: 10 % SA solution, Group 3: 6.5 % GSE, Group 4: 5 % GTE, Group 5: Er: YAG laser and Group 6: CP. Following reversal, the composite was built and cured for 40 s. All the specimens were stored in distilled water at room temperature for 1 day. Microleakage, SBS, and failure mode were analyzed. Kolmogorov-Smirnov test, one-way analysis of variance, and Tukey's multiple post hoc test were used to analyze the data statistically. RESULTS Group 2 (SA) (20.11 ± 5.79 nm) exhibited minimum value of microleakage and highest SBS (10.22 ± 1.62 MPa). Whereas, Group 1 (No antioxidant agent) displayed maximum scores of marginal leakage (28.11±8.89 nm) and lowest SBS (7.02 ± 1.22 MPa). CONCLUSION CP, GTE and GSE can be used as a potential alternative to the commonly used SA solution to reverse the negative impact of bleaching on the enamel surface. The use of reversal agents CP, GTE and GSE improves bond values with a decrease in microleakage scores However, future studies are still warranted to conclude the outcomes of the existing study.
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Affiliation(s)
- Thamer Almohareb
- Restorative Dental Science Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Khold Al Ahdal
- Restorative Dental Science Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Ahmed M Maawadh
- Restorative Dental Science Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Laila Al Deeb
- Restorative Dental Science Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Ahoud S Alshamrani
- Restorative Dental Science Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Ali Alrahlah
- Restorative Dental Science Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia.
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Alqahtani WMS, Qamar Z, Yousief SA, Abdul NS, Reddy RN, Alghufaili S, Khuthija Khanam HM, Barakat A, Niazi FH. Use of final irrigants MTAD, Salvedora Perscia, Malachite green, and Ti-sapphire laser on push-out bond strength of Zirconia post. Photodiagnosis Photodyn Ther 2023; 43:103605. [PMID: 37187269 DOI: 10.1016/j.pdpdt.2023.103605] [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: 04/24/2023] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 05/17/2023]
Abstract
AIM Evaluation of the push-out bond strength (PBS) of zirconia post-bonded to radicular dentin after using different final irrigants (MTAD, Malachite green (MG), Ti-sapphire laser and Salvadora persica (S.persica). MATERIAL AND METHOD Forty human permanent single-rooted were decoronated above the cement-enamel junction. An experienced endodontist performed all the root canal instrumentation using ProTaper universal rotary files. Canals were irrigated using 5.25% NaOCl solution followed by EDTA as a final sterilant. Obturation with gutta-percha using AH Plus sealer was performed. Post-space preparation was completed using Gates Glidden and specimens were randomly assigned to four groups based on the final disinfectant received (n=10). Group 1: 5.25% NaOCl + MTAD, group 2: 5.25% NaOCl + MG, group 3: 5.25% NaOCl +Ti-sapphire laser, and group 4: 5.25% NaOCl + S. persica. The chemically polymerized resin was used to lute zirconia posts. PBS and failure mode analysis were performed using a universal testing machine and stereomicroscope at 40X magnification. Data were compared between the two groups with 95% CI using one-way analysis of variance (ANOVA) with the Tukey post hoc test. p=0.05. RESULTS Group4(5.25% NaOCl+ S.persica) specimens demonstrated the maximum (8.94±0.14 MPa) bond strength. Conversely, the apical third of Group 2 (5.25% NaOCl+ MG) (2.87±0.15 MPa) samples revealed the minimum bond strength scores. Intergroup comparison exposed that Group 1 (1.3% NaOCl+ MTAD), Group 3 (5.25% NaOCl+Ti-sapphire laser), and Group 4 (5.25% NaOCl+ S. persica) at all three-thirds unveiled no significant difference in PBS (p<0.05). CONCLUSION Ti-sapphire laser and Salvedora Persica possess the potential to be used as a final root canal irrigant to improve the push-out bond strength of zirconia post-to-root dentin.
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Affiliation(s)
- Waleed M S Alqahtani
- Department of Prosthetic Dentistry, College of Dentistry, King Khalid University, Abha, Saudi Arabia.
| | - Zeeshan Qamar
- Department of O&MFS and Diagnostic Sciences, Faculty of Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia.
| | - Salah A Yousief
- Crown and Bridge Department, Faculty of Oral and Dental Medicine, Al-Azhar University, Assuit Branch, 71524, Egypt; Department of Restorative and Prosthetic Dentistry, College of Dentistry, Dar Al UloomUniversity, Riyadh, Saudi Arabia
| | - Nishath Sayed Abdul
- Department of OMFS and Diagnostic Sciences (Oral Pathology), Faculty of Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia
| | - R Naveen Reddy
- Department of Prosthodontics, Faculty of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Saleh Alghufaili
- Faculty of Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia
| | - H M Khuthija Khanam
- Department of Restorative and Prosthetic Dentistry, College of Dentistry, Dar Al UloomUniversity, Riyadh, Saudi Arabia.
| | - Ali Barakat
- Department of Restorative and Prosthetic Dentistry, College of Dentistry, Dar Al UloomUniversity, Riyadh, Saudi Arabia.
| | - Fayez Hussain Niazi
- Department of Restorative and Prosthetic Dentistry, College of Dentistry, Dar Al UloomUniversity, Riyadh, Saudi Arabia.
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Alqerban A, Asiri SN, Alghabban R, Alharbi F, Almalki A, Aljhani AS, Bukhary F, Abdelrahim R, Alkhtani F, Samran A. Periodontal, Microbiological, and Proinflammatory Cytokines Levels in Fixed Orthodontics Patients Treated with Photodynamic Therapy Adjunct to Full Mouth Scaling. Photobiomodul Photomed Laser Surg 2023; 41:133-139. [PMID: 36927049 DOI: 10.1089/photob.2022.0155] [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: 03/18/2023] Open
Abstract
Objective: To assess the efficiency of photodynamic therapy (PDT) adjunct to full mouth scaling (FMS) in improving periodontal, microbiological, and proinflammatory cytokines levels in patients undergoing fixed orthodontics treatment (FOT). Materials and methods: The study recruited 60 teenage patients who were undergoing FOT. All the patients were arbitrarily divided into two groups: Group 1, FMS +PDT and Group 2, FMS alone. Plaque scores (PS), bleeding on probing (BOP), and probing depth (PD) were assessed. Levels of biomarkers interleukin (IL)-6 and tumor necrosis factor-alpha (TNF-α) using enzyme-linked immunosorbent assay were evaluated. Samples were collected from gingival plaque for estimation of Prevotella intermedia and Porphyromonas gingivalis load. All measurements were completed at three intervals baseline, 4th week, and 8th week. Post Hoc corrections and intergroup comparisons were examined using Student's t-test and Bonferroni correction. To find differences between repeated follow-ups, analysis of variance (ANOVA) multiple rank tests were used. Results: At baseline, all the gingival parameters displayed comparable outcomes between patients of Group 1 and Group 2 (p > 0.05). However, at 4 and 8 weeks of follow-up, PS and BOP among tested groups exhibited significantly lower values than baseline (p < 0.001). At 8 weeks, there was a significant difference in PS between the two groups tested. Moreover, at 4 and 8 weeks, BOP revealed a significant difference between the groups. PD remains comparable with baseline at follow-up visits (p > 0.05). A significant decrease in IL-6 and TNF-α levels was observed in both investigated groups at 4 and 8 weeks of baseline. Moreover, it was identified that P. intermedia and P. gingivalis were reduced significantly at 4 weeks. Moreover, a significant difference existed between both Group 1 and Group 2 at 4 and 8 weeks of recall visit (p < 0.05). Conclusions: The use of photodynamic treatment adjuvant to FMS aids in improving periodontal parameters and cytokines levels.
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Affiliation(s)
- Ali Alqerban
- Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Saeed N Asiri
- Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Rawda Alghabban
- Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Fahad Alharbi
- Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Abdullah Almalki
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al-Majmaah, Saudi Arabia
| | - Ali S Aljhani
- Department of Dentistry, King Abdullah International Medical Research Center, King Saud bin Abdulaziz University for Health Sciences, King Abdulaziz Nations Guard Hospital, Riyadh, Saudi Arabia
| | - Ferdous Bukhary
- Department of Preventive Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia
| | - Rawa Abdelrahim
- Department of Preventive Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia
| | - Fahad Alkhtani
- Department of Prosthodontics, College of Dentistry, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Abdulaziz Samran
- Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia
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Golshah A, Bagheri N, Moslem Imani M, Safari-Faramani R. Effects of different types of laser etching versus phosphoric acid etching on shear bond strength of metal brackets to human enamel: A systematic review and meta-analysis of in vitro studies. Int Orthod 2020; 18:673-683. [PMID: 33144060 DOI: 10.1016/j.ortho.2020.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/26/2020] [Accepted: 10/03/2020] [Indexed: 11/28/2022]
Abstract
INTRODUCTION This study aimed to assess the effect of different types of laser etching versus phosphoric acid etching on shear bond strength (SBS) of metal brackets to human enamel. MATERIALS AND METHODS In this systematic review and meta-analysis, relevant articles published until the end of October 2019 were retrieved from PubMed, ISI Web of Science, Scopus, Embase, and Cochrane Library. The inclusion criteria were in vitro studies on the effect of laser on SBS of metal brackets to the enamel in comparison with acid-etching, and studies published in English to the end of October 2019. After assessing the eligibility criteria and quality, a total of 18 studies were statistically analysed using STATA software. RESULTS The SBS of 554 human tooth specimens in the test group (subjected to irradiation of different laser types) was compared with the SBS of 313 tooth specimens in the control group (etched with phosphoric acid). The meta-analysis showed that laser etching decreased the SBS of brackets by 1.39MPa, compared with phosphoric acid etching, and this reduction was statistically significant (P<0.05). The Er:YAG group, however, showed 0.6MPa higher SBS than phosphoric acid etching group, but this increase was not statistically significant. CONCLUSION Laser etching yields lower SBS than acid etching; even though different laser types have different effects on SBS. Thus, the conventional acid-etching technique is still recommended for enamel etching prior to the bonding of orthodontic metal brackets.
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Affiliation(s)
- Amin Golshah
- Kermanshah University of Medical Sciences, Faculty of Dentistry, Department of Orthodontics, Kermanshah, Iran
| | - Nila Bagheri
- Kermanshah University of Medical Sciences, Students Research Committee, Kermanshah, Iran
| | - Mohammad Moslem Imani
- Kermanshah University of Medical Sciences, Faculty of Dentistry, Department of Orthodontics, Kermanshah, Iran
| | - Roya Safari-Faramani
- School of Public Health, Research Centre for Environmental Determinants of Health, Kermanshah University of Medical Sciences, Isar square, Dowlat abad street, Kermanshah, Iran.
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Garcés GA, Rojas VH, Bravo C, Sampaio CS. Shear bond strength evaluation of metallic brackets bonded to a CAD/CAM PMMA material compared to traditional prosthetic temporary materials: an in vitro study. Dental Press J Orthod 2020; 25:31-38. [PMID: 32844970 PMCID: PMC7437152 DOI: 10.1590/2177-6709.25.3.031-038.oar] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 07/06/2019] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Orthodontic treatment for adults is currently increasing, and therefore the need to bond brackets to restorations and temporary crowns. The use of CAD/CAM PMMA provisional restorations for orthodontic purposes have not yet been described, and there is currently insufficient information regarding the strength of bracket adhesion. OBJECTIVE This study aimed at evaluating the effects of thermocycling (TC) and surface treatment on shear bond strength (SBS) of brackets to different provisional materials. METHODS Forty specimens were made from each material [PMMA (Telio Lab), bis-acryl (Telio CS C&B), and PMMA CAD/CAM (Telio CAD)], sandpapered, and divided according to surface treatment (pumiced or sandblasted) and TC (half of the samples = 1,000 cycles, 5°C/55°C water baths) (n = 10/group). Stainless-steel brackets were bonded to the specimens (using Transbond XT), and SBS testing was performed. Data were analyzed by three-way ANOVA and LSD post-hoc tests (α = 0.05). Failure types were classified with adhesive remnant index (ARI) scores. RESULTS SBS values ranged from 1.5 to 14.9 MPa. Sandblasted bis-acryl and sandblasted auto-curing PMMA groups presented similar values (p> 0.05), higher than the CAD/CAM material (p< 0.05), with or without TC. When thermocycled, pumiced bis-acryl showed higher SBS than pumiced acrylic (p= 0.005) and CAD/CAM materials (p= 0.000), with statistical difference (p= 0.009). TC showed negative effect (p< 0.05) for sandblasted bis-acryl and pumiced acrylic groups. ARI predominant score was mostly zero (0) for CAD/CAM, 1 and 2 for bis-acryl, and 1 for acrylic groups. CONCLUSION In general, bis-acryl material showed the highest SBS values, followed by acrylic and CAD/CAM materials, which showed SBS values lower than an optimum strength for bonding brackets.
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Affiliation(s)
- Gonzalo Andrés Garcés
- Department of Biomaterials, Faculty of Dentistry, Universidad de Los Andes, Santiago, Chile
| | - Victor Hugo Rojas
- Department of Orthodontics, Faculty of Dentistry, Universidad de Los Andes, Santiago, Chile
| | - Cristian Bravo
- Department of Biomaterials, Faculty of Dentistry, Universidad de Los Andes, Santiago, Chile
| | - Camila S Sampaio
- Department of Biomaterials, Faculty of Dentistry, Universidad de Los Andes, Santiago, Chile
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Aycan M, Goymen M. Comparison of the different retention appliances produced using CAD/CAM and conventional methods and different surface roughening methods. Lasers Med Sci 2018; 34:287-296. [PMID: 30084028 DOI: 10.1007/s10103-018-2585-7] [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] [Received: 01/15/2018] [Accepted: 07/06/2018] [Indexed: 11/30/2022]
Abstract
The purposes of this study are to conduct an in vitro comparison of the shear bond strength, breakage mode, and wire deformation of three different types of retainers and to compare the subsequent enamel surface changes. Two hundred seventy intact lower incisor teeth were embedded in acrylic blocks in pairs. Dead wire and CAD/CAM-fabricated and fiber-reinforced wires were applied to the teeth roughened with acid and Er:YAG or Er,Cr:YSGG laser. The surface roughness was observed by scanning electron and atomic force microscopy. The samples were analyzed for shear bonds. The dead wire and acid group were found to have the highest bonding strength and the strengths for all groups in which acid was used as an agent were found to be higher than others. Deformation of retainers was most noted in the dead wire-acid group. Among all the groups, the CAD/CAM-fabricated wire group showed the least deformation, with no deformation observed. In this study, it was determined that there is a significant correlation between ARI scores and agents. Consequently, acid etching was found to create more enamel surface roughness than laser groups. It was also seen that the combined use of the acid method and dead soft wire had the highest bond strength, even though it was not statistically significant. It was concluded that CAD/CAM-fabricated wire provides the opportunity for reuse in clinical applications due to its lack of deformation, being more conservative for the patient, and being more advantageous for the clinician in terms of session time, considering the residual adhesive amount left on the enamel surface.
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Affiliation(s)
- Merve Aycan
- Dentistry Faculty, Department of Orthodontics, Gaziantep University, 27060 Sehitkamil, Gaziantep, Turkey
| | - Merve Goymen
- Dentistry Faculty, Department of Orthodontics, Gaziantep University, 27060 Sehitkamil, Gaziantep, Turkey.
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García-Sanz V, Paredes-Gallardo V, Bellot-Arcís C, Martínez-León L, Torres-Mendieta R, Montero J, Albaladejo A. Femtosecond laser settings for optimal bracket bonding to zirconia. Lasers Med Sci 2018; 34:297-304. [DOI: 10.1007/s10103-018-2589-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 07/11/2018] [Indexed: 11/29/2022]
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Demirtag Z, Culhaoglu AK. Surface Roughness of Ceramic-Resin Composites After Femtosecond Laser Irradiation, Sandblasting or Acid Etching and Their Bond Strength With and Without Silanization to a Resin Cement. Oper Dent 2018; 44:156-167. [PMID: 29953343 DOI: 10.2341/17-391-l] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES: The aim of this study was to investigate the effects of femtosecond laser irradiation, sandblasting, or acid etching treatments on the surface roughness of ceramic-resin composites and also shear bond strength (SBS) with and without silanization to a resin cement. METHODS: Samples of Vita Enamic (VE; Vita Zahnfabrik, Bad Säckingen, Germany) and Lava Ultimate (LU; 3M ESPE, Seefeld, Germany) were classified into control (no treatment), sandblasting, hydrofluoric acid, and femtosecond laser groups (n=30). Surface roughness was determined using two-dimensional contact profilometry. Surface topography was evaluated using a three-dimensional contact profilometer and a scanning electron microscope. Then groups were divided into two subgroups with similar surface roughness values, including control (C), control + silane (C-S), sandblasting (SB), sandblasting + silane (SB-S), hydrofluoric acid (HF), hydrofluoric acid + silane (HF-S), femtosecond laser (FS), and femtosecond laser + silane (FS-S) groups (n=15). Panavia F 2.0 resin cement was applied to the sample surfaces using an SDI SBS rig (SDI Limited, Bayswater, Australia). The SBS test was performed after water storage (24 h, 37°C) and thermocycles (2000 cycles, 5°C to 55°C), and failure modes were evaluated. RESULTS: The highest surface roughness was observed in the FS group, and the highest SBS was observed in the FS-S group for both VE and LU ( p<0.001). Silanization improved the SBS of VE significantly ( p<0.001) in all surface treatments but did not improve that of LU except in the FS group ( p=0.004). There was a significantly moderate negative correlation in the VE/SB group ( p=0.012) and a moderate positive correlation in the VE/HF group ( p=0.049). CONCLUSIONS: Femtosecond laser irradiation was found to be more effective than sandblasting or acid etching in increasing the surface roughness, and it was also the most effective surface treatment with silanization on the SBS of a resin cement to the ceramic-resin composites.
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Yuan F, Lv P, Wang D, Wang L, Sun Y, Wang Y. Controlling dental enamel-cavity ablation depth with optimized stepping parameters along the focal plane normal using a three axis, numerically controlled picosecond laser. Photomed Laser Surg 2016; 33:92-7. [PMID: 25692727 DOI: 10.1089/pho.2014.3840] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The purpose of this study was to establish a depth-control method in enamel-cavity ablation by optimizing the timing of the focal-plane-normal stepping and the single-step size of a three axis, numerically controlled picosecond laser. BACKGROUND DATA Although it has been proposed that picosecond lasers may be used to ablate dental hard tissue, the viability of such a depth-control method in enamel-cavity ablation remains uncertain. METHODS Forty-two enamel slices with approximately level surfaces were prepared and subjected to two-dimensional ablation by a picosecond laser. The additive-pulse layer, n, was set to 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70. A three-dimensional microscope was then used to measure the ablation depth, d, to obtain a quantitative function relating n and d. Six enamel slices were then subjected to three dimensional ablation to produce 10 cavities, respectively, with additive-pulse layer and single-step size set to corresponding values. The difference between the theoretical and measured values was calculated for both the cavity depth and the ablation depth of a single step. These were used to determine minimum-difference values for both the additive-pulse layer (n) and single-step size (d). RESULTS When the additive-pulse layer and the single-step size were set 5 and 45, respectively, the depth error had a minimum of 2.25 μm, and 450 μm deep enamel cavities were produced. CONCLUSIONS When performing three-dimensional ablating of enamel with a picosecond laser, adjusting the timing of the focal-plane-normal stepping and the single-step size allows for the control of ablation-depth error to the order of micrometers.
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Affiliation(s)
- Fusong Yuan
- 1 Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology and National Engineering Laboratory for Digital and Material Technology of Stomatology and Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health , Beijing, China
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Vicente Prieto M, Gomes ALC, Montero Martín J, Alvarado Lorenzo A, Seoane Mato V, Albaladejo Martínez A. The Effect of Femtosecond Laser Treatment on the Effectiveness of Resin-Zirconia Adhesive: An In Vitro Study. J Lasers Med Sci 2016; 7:214-219. [PMID: 28491255 DOI: 10.15171/jlms.2016.38] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction: When aesthetics is compromised, dental ceramics are excellent materials for dental restorations; owing to their optical properties and biocompatibility, zirconia ceramics are particularly interesting. Self-adhesive resin cements are the most suitable for bonding to zirconia ceramics, but traditional adhesive chemistry is ineffective and surface treatments are required to improve the adhesive bonding between resin and zirconia. The aim of this study was to evaluate the effect of femtosecond laser treatment on the shear bond strength (SBS) of self-adhesive resin cement on zirconia surfaces and to contrast it with other different surface conditioning methods. Methods: Sixty square-shaped zirconia samples were divided randomly into four groups (n = 15) according to their surface conditioning method: the NT group - no surface treatment; the APA25 group - airborne abrasion with 25 μm alumina particles; the TSC group - tribochemical silica coating, and the FS group - femtosecond laser irradiation (800 nm, 4 mJ, 40 fs/pulse, 1 kHz). Self-adhesive resin cements were bonded at the centre of samples, and after 72 hours, they were tested for SBS with a universal testing machine at a crosshead speed of 0.5 mm/min, until fracture. Five zirconia surfaces for each group were subjected to a surface morphology analysis by scanning electron microscopy (SEM). The failure modes were noted and a third of the specimens were prepared to morphological analysis. Results: The NT group showed lower SBS values than the other groups. Femtosecond laser treatment demonstrated higher values than the control and APA25 groups and similar values to those of the TSC group. In the APA25 group, the surface conditioning method had values close to those of the TSC group, but lower than those obtained with femtosecond laser treatment. Conclusion: The treatment of zirconia with femtosecond laser irradiation created a consistent and profound surface roughness, improving the adhesive effectiveness of the zirconia-resin interface.
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Affiliation(s)
- María Vicente Prieto
- Dental Clinic (Faculty of Medicine), University of Salamanca. Paseo Universidad de Coimbra, s/n, 37007, Salamanca, Spain
| | - Ana Luisa Caseiro Gomes
- Dental Clinic (Faculty of Medicine), University of Salamanca. Paseo Universidad de Coimbra, s/n, 37007, Salamanca, Spain
| | - Javier Montero Martín
- Contracted Professor, Dental Clinic (Faculty of Medicine), University of Salamanca. Paseo Universidad de Coimbra, s/n, 37007, Salamanca, Spain
| | - Alfonso Alvarado Lorenzo
- Contracted Professor, Dental Clinic (Faculty of Medicine), University of Salamanca. Paseo Universidad de Coimbra, s/n, 37007, Salamanca, Spain
| | - Vicente Seoane Mato
- Dental Clinic (Faculty of Medicine), University of Salamanca. Paseo Universidad de Coimbra, s/n, 37007, Salamanca, Spain
| | - Alberto Albaladejo Martínez
- Contracted Professor, Dental Clinic (Faculty of Medicine), University of Salamanca. Paseo Universidad de Coimbra, s/n, 37007, Salamanca, Spain
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11
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Aglarci C, Demir N, Aksakalli S, Dilber E, Sozer OA, Kilic HS. Bond strengths of brackets bonded to enamel surfaces conditioned with femtosecond and Er:YAG laser systems. Lasers Med Sci 2016; 31:1177-83. [PMID: 27225386 DOI: 10.1007/s10103-016-1961-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 05/09/2016] [Indexed: 11/29/2022]
Abstract
The aim of this study was to compare femtosecond and Er:YAG laser systems with regard to enamel demineralization and bracket bond strength. Human-extracted premolars were randomized to three groups (n = 17) depending on the conditioning treatment used for the buccal surfaces: 37 % orthophosphoric acid, Er:YAG laser etching (MSP mode 120 mJ, 10 Hz, 1.2 W), and femtosecond laser etching (0.4 W, 800 nm, 90 fs/pulse, 1 kHz). Metal brackets were bonded with Transbond XT to the conditioned surfaces and light cured for 20 s. The samples were thermocycled (5000 cycles, 5-55 °C) and subjected to shear bond strength (SBS) testing using a universal testing machine. Failure types were analyzed under an optical stereomicroscope and SEM. The adhesive remnant index (ARI) was evaluated to assess residual adhesive on the enamel surface. The results revealed no significant differences in SBS between the Er:YAG laser (7.2 ± 3.3 MPa) and acid etching groups (7.3 ± 2.7 MPa; p < 0.05), whereas a significant difference was observed between the femtosecond laser etching group (3.3 ± 1.2 MPa) and the other two groups (p < 0.01). ARI scores were significantly different among the three groups. The results of our study suggest that laser conditioning with an Er:YAG system results in successful etching, similar to that obtained with acid. The sole use of a femtosecond laser system may not provide an adequate bond strength at the bracket-enamel interface.
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Affiliation(s)
- Cahide Aglarci
- Faculty of Dentistry, Department of Orthodontics, Sifa University, Mansuroglu Mah. 293/1 Sok No:2 Bayrakli, Izmir, Turkey.
| | - Necla Demir
- Faculty of Dentistry, Department of Prosthodontics, Selcuk University, Konya, Turkey
| | - Sertac Aksakalli
- Faculty of Dentistry, Department of Orthodontics, Bezmialem University, Istanbul, Turkey
| | - Erhan Dilber
- Faculty of Dentistry, Department of Prosthodontics, Selcuk University, Konya, Turkey
| | - Ozlem Akinci Sozer
- Faculty of Dentistry, Department of Orthodontics, Mustafa Kemal University, Hatay, Turkey
| | - Hamdi Sukur Kilic
- Faculty of Science, Department of Physics, Selcuk University, Konya, Turkey
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Yilmaz-Savas T, Demir N, Ozturk AN, Kilic HS. Effect of Different Surface Treatments on the Bond Strength of Lithium Disilicate Ceramic to the Zirconia Core. Photomed Laser Surg 2016; 34:236-43. [PMID: 27096900 DOI: 10.1089/pho.2015.4063] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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 effect of different surface treatments [sandblasting, Erbium:Yttrium-Aluminium-Garnet (Er:YAG), and femtosecond lasers] on the shear bond strength (SBS) of the CAD-on technique. BACKGROUND DATA Although demand for all-ceramic restorations has increased, chipping remains one of the major problems for zirconia-based restorations. MATERIALS AND METHODS Forty yttrium-stabilized tetragonal zirconia polycrystalline (Y-TZP) zirconia plates (IPS e.max ZirCAD, Ivoclar Vivadent) were cut, sintered (12.4 × 11.4 × 3 mm) and divided into four groups according to the surface treatments (n = 10): a control group with no surface treatment (Group C), sandblasting with 50 μm Al2O3 (Group S), Er:YAG laser irradiation (Group E), and femtosecond laser irradiation (Group F). Also, 40 cylindrical (5 mm diameter, 2 mm height) lithium disilicate (IPS e.max CAD) veneer ceramics were cut and fused to all zirconia cores by a glass-fusion ceramic and crystallized according to the CAD-on technique. Specimens were subjected to shear force using a universal testing machine. The load was applied at a crosshead speed of 0.5 mm/min until failure. Mean SBS (MPa) were analyzed with one way ANOVA (p < 0.05). The failed specimens were examined under a stereomicroscope at ×20 to classify the mode of failure. RESULTS The highest SBS was observed in Group F (36 ± 3.31 MPa), followed by Group S (33.03 ± 5.05 MPa), and Group C (32.52 ± 10.15 MPa). The lowest SBS was observed in Group E (31.02 ± 4.96 MPa), but no significant differences were found between the control and surface treated groups (p = 0.377). All the specimens showed a mixed type of failure. CONCLUSIONS Femtosecond laser application increased the bond strength between zirconia-veneer specimens. However, the novel CAD-on technique with no surface treatment also showed high bonding strength. Thus, this technique could prevent ceramic chipping without additional surface treatments.
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Affiliation(s)
- Tuba Yilmaz-Savas
- 1 Faculty of Dentistry, Department of Prosthodontics, Selcuk University , Konya, Turkey
| | - Necla Demir
- 1 Faculty of Dentistry, Department of Prosthodontics, Selcuk University , Konya, Turkey
| | - A Nilgun Ozturk
- 1 Faculty of Dentistry, Department of Prosthodontics, Selcuk University , Konya, Turkey
| | - Hamdi Sukur Kilic
- 2 Faculty of Science, Department of Physics, Selcuk University , Konya, Turkey
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13
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Vicente M, Gomes AL, Montero J, Rosel E, Seoane V, Albaladejo A. Influence of cyclic loading on the adhesive effectiveness of resin-zirconia interface after femtosecond laser irradiation and conventional surface treatments. Lasers Surg Med 2016; 48:36-44. [DOI: 10.1002/lsm.22442] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2015] [Indexed: 11/09/2022]
Affiliation(s)
- María Vicente
- Dental Clinic (Faculty of Medicine); University of Salamanca. Paseo Universidad de Coimbra; s/n, 37007 Salamanca Spain
| | - Ana L. Gomes
- Dental Clinic (Faculty of Medicine); University of Salamanca. Paseo Universidad de Coimbra; s/n, 37007 Salamanca Spain
| | - Javier Montero
- Contracted Professor of Dental Clinic (Faculty of Medicine); University of Salamanca. Paseo Universidad de Coimbra; s/n, 37007 Salamanca Spain
| | - Eva Rosel
- Dental Clinic (Faculty of Odontology); University of Granada. Colegio Máximo, Campus Universitario de Cartuja; 18011 Granada Spain
| | - Vicente Seoane
- Dental Clinic (Faculty of Medicine); University of Salamanca. Paseo Universidad de Coimbra; s/n, 37007 Salamanca Spain
| | - Alberto Albaladejo
- Contracted Professor of Dental Clinic (Faculty of Medicine); University of Salamanca. Paseo Universidad de Coimbra; s/n, 37007 Salamanca Spain
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14
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Bakhadher W, Halawany H, Talic N, Abraham N, Jacob V. Factors Affecting the Shear Bond Strength of Orthodontic Brackets - a Review of In Vitro Studies. ACTA MEDICA (HRADEC KRÁLOVÉ) 2015; 58:43-8. [PMID: 26455565 DOI: 10.14712/18059694.2015.92] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The adhesive material used to bond orthodontic brackets to teeth should neither fail during the treatment period, resulting in treatment delays, untoward expenses or patient inconvenience nor should it damage the enamel on debonding at the end of the treatment. Although the effectiveness of a bonding system and any unfavorable effects on the enamel may be studied by conducting in-vivo studies, it is nearly impossible to independently analyze different variables that influence a specific bonding system in the oral environment. In-vitro studies, on the other hand, may utilize more standardized protocols for testing different bonding systems and materials available. Thus, the present review focused attention on in-vitro studies and made an attempt to discuss material-related, teeth-related (fluorotic vs non-fluorotic teeth) and other miscellaneous factors that influences the shear bond strength of orthodontic brackets. Within the limitations of this review, using conventional acid-etch technique, ceramic brackets and bonding to non-fluorotic teeth was reported to have a positive influence on the shear bond strength of orthodontic brackets, but higher shear bond strength found on using ceramic brackets can be dangerous for the enamel.
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Affiliation(s)
- Waleed Bakhadher
- Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Hassan Halawany
- Dental Caries Research Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia. .,Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
| | - Nabeel Talic
- Department of Pediatric Dentistry and Orthodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Nimmi Abraham
- Dental Caries Research Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Vimal Jacob
- Dental Caries Research Chair, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
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15
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Erdur EA, Basciftci FA. Effect of Ti:Sapphire-femtosecond laser on the surface roughness of ceramics. Lasers Surg Med 2015; 47:833-8. [DOI: 10.1002/lsm.22432] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Emire Aybuke Erdur
- Department of Orthodontics; Faculty of Dentistry; University of Selcuk; Konya Turkey
| | - Faruk Ayhan Basciftci
- Department of Orthodontics; Faculty of Dentistry; University of Selcuk; Konya Turkey
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16
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Yavuz T, Özyılmaz ÖY, Dilber E, Tobi ES, Kiliç HŞ. Effect of Different Surface Treatments on Porcelain-Resin Bond Strength. J Prosthodont 2015; 26:446-454. [DOI: 10.1111/jopr.12387] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2015] [Indexed: 12/01/2022] Open
Affiliation(s)
- Tevfik Yavuz
- Department of Prosthodontics; Faculty of Dentistry, Abant Izzet Baysal University; Bolu Turkey
| | - Özgün Yusuf Özyılmaz
- Department of Prosthodontics; Faculty of Dentistry, İstanbul Medipol University; İstanbul Turkey
| | - Erhan Dilber
- Department of Prosthodontics; Faculty of Dentistry, Sifa University; Izmir Turkey
| | - Elif Sümeyye Tobi
- Department of Prosthodontics; Faculty of Dentistry, Selcuk University; Konya Turkey
| | - Hamdi Şükür Kiliç
- Department of Physics; Faculty of Science, Selcuk University; Konya Turkey
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17
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Erdur EA, Basciftci FA. Effect of Ti:sapphire laser on shear bond strength of orthodontic brackets to ceramic surfaces. Lasers Surg Med 2015; 47:512-9. [PMID: 25994849 DOI: 10.1002/lsm.22371] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2015] [Indexed: 11/06/2022]
Abstract
BACKGROUND AND OBJECTIVES With increasing demand for orthodontic treatments in adults, orthodontists continue to debate the optimal way to prepare ceramic surfaces for bonding. This study evaluated the effects of a Ti:sapphire laser on the shear bond strength (SBS) of orthodontic brackets bonded to two ceramic surfaces (feldspathic and IPS Empress e-Max) and the results were compared with those using two other lasers (Er:YAG and Nd:YAG) and 'conventional' techniques, i.e., sandblasting (50 µm) and hydrofluoric (HF) acid. MATERIALS AND METHODS In total, 150 ceramic discs were prepared and divided into two groups. In each group, the following five subgroups were prepared: Ti:sapphire laser, Nd:YAG laser, Er:YAG laser, sandblasting, and HF acid. Mandibular incisor brackets were bonded using a light-cured adhesive. The samples were stored in distilled water for 24 hours at 37°C and then thermocycled. Extra samples were prepared and examined using scanning electron microscopy (SEM). SBS testing was performed and failure modes were classified. ANOVA and Tukey's HSD tests were used to compare SBS among the five subgroups (P < 0.05). RESULTS Feldspathic and IPS Empress e-Max ceramics had similar SBS values. The Ti:sapphire femtosecond laser (16.76 ± 1.37 MPa) produced the highest mean bond strength, followed by sandblasting (12.79 ± 1.42 MPa) and HF acid (11.28 ± 1.26 MPa). The Er:YAG (5.43 ± 1.21 MPa) and Nd:YAG laser (5.36 ± 1.04 MPa) groups were similar and had the lowest SBS values. More homogeneous and regular surfaces were observed in the ablation pattern with the Ti:sapphire laser than with the other treatments by SEM analysis. CONCLUSIONS Within the limitations of this in vitro study, Ti:sapphire laser- treated surfaces had the highest SBS values. Therefore, this technique may be useful for the pretreatment of ceramic surfaces as an alternative to 'conventional' techniques.
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Affiliation(s)
- Emire Aybuke Erdur
- Research Assistant, Department of Orthodontics, Faculty of Dentistry, University of Selcuk, Konya, Turkey
| | - Faruk Ayhan Basciftci
- Professor, Department of Orthodontics, Faculty of Dentistry, University of Selcuk, Konya, Turkey
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Baek KW, Deibel W, Marinov D, Griessen M, Dard M, Bruno A, Zeilhofer HF, Cattin P, Juergens P. A comparative investigation of bone surface after cutting with mechanical tools and Er:YAG laser. Lasers Surg Med 2015; 47:426-32. [PMID: 25945815 DOI: 10.1002/lsm.22352] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2015] [Indexed: 11/06/2022]
Abstract
BACKGROUND AND OBJECTIVES Despite of the long history of medical application, laser ablation of bone tissue became successful only recently. Laser bone cutting is proven to have higher accuracy and to increase bone healing compared to conventional mechanical bone cutting. But the reason of subsequent better healing is not biologically explained yet. In this study we present our experience with an integrated miniaturized laser system mounted on a surgical lightweight robotic arm. STUDY DESIGN/MATERIALS AND METHODS An Erbium-doped Yttrium Aluminium Garnet (Er:YAG) laser and a piezoelectric (PZE) osteotome were used for comparison. In six grown up female Göttingen minipigs, comparative surgical interventions were done on the edentulous mandibular ridge. Our laser system was used to create different shapes of bone defects on the left side of the mandible. On the contralateral side, similar bone defects were created by PZE osteotome. Small bone samples were harvested to compare the immediate post-operative cut surface. RESULTS The analysis of the cut surface of the laser osteotomy and conventional mechanical osteotomy revealed an essential difference. The scanning electron microscopy (SEM) analysis showed biologically open cut surfaces from the laser osteotomy. The samples from PZE osteotomy showed a flattened tissue structure over the cut surface, resembling the "smear layer" from tooth preparation. CONCLUSIONS We concluded that our new finding with the mechanical osteotomy suggests a biological explanation to the expected difference in subsequent bone healing. Our hypothesis is that the difference of surface characteristic yields to different bleeding pattern and subsequently results in different bone healing. The analyses of bone healing will support our hypothesis.
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Affiliation(s)
- Kyung-Won Baek
- Department of Cranio-Maxillofacial Surgery, University Hospital Basel, Spitalstrasse 21, Basel, 4031, Switzerland.,Hightech Research Centre of Cranio-Maxillofacial Surgery, University of Basel, Schanzenstrasse 46, Basel, 4031, Switzerland
| | - Waldemar Deibel
- Medical Image Analysis Centre, University of Basel, Spitalstrasse 21, Basel, 4031, Switzerland.,Advanced Osteotomy Tools AG, Spitalstrasse 21, Basel, 4031, Switzerland
| | - Dilyan Marinov
- Advanced Osteotomy Tools AG, Spitalstrasse 21, Basel, 4031, Switzerland
| | - Mathias Griessen
- Medical Image Analysis Centre, University of Basel, Spitalstrasse 21, Basel, 4031, Switzerland.,Advanced Osteotomy Tools AG, Spitalstrasse 21, Basel, 4031, Switzerland
| | - Michel Dard
- Periodontology and Implant Dentistry, New York University College of Dentistry, 345E. 24th Street, New York City, 10010
| | - Alfredo Bruno
- Advanced Osteotomy Tools AG, Spitalstrasse 21, Basel, 4031, Switzerland
| | - Hans-Florian Zeilhofer
- Department of Cranio-Maxillofacial Surgery, University Hospital Basel, Spitalstrasse 21, Basel, 4031, Switzerland.,Hightech Research Centre of Cranio-Maxillofacial Surgery, University of Basel, Schanzenstrasse 46, Basel, 4031, Switzerland
| | - Philippe Cattin
- Medical Image Analysis Centre, University of Basel, Spitalstrasse 21, Basel, 4031, Switzerland
| | - Philipp Juergens
- Department of Cranio-Maxillofacial Surgery, University Hospital Basel, Spitalstrasse 21, Basel, 4031, Switzerland.,Hightech Research Centre of Cranio-Maxillofacial Surgery, University of Basel, Schanzenstrasse 46, Basel, 4031, Switzerland
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Akpinar YZ, Irgin C, Yavuz T, Aslan MA, Kilic HS, Usumez A. Effect of femtosecond laser treatment on the shear bond strength of a metal bracket to prepared porcelain surface. Photomed Laser Surg 2015; 33:206-12. [PMID: 25790117 DOI: 10.1089/pho.2014.3791] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate the effects of femtosecond laser treatment (Group FS) on the shear bond strength (SBS) of a metal bracket to prepared porcelain surface, and to compare it with other surface treatment techniques [50 μm Al2O3 sandblasting (Group SB), 9.6% hydrofluoric acid gel (Group HF), and neodymium-doped yttrium aluminium garnet (Nd:YAG laser) (Group NY)]. BACKGROUND DATA Because of the increasing number of adult patients in current orthodontic practice, achieving sufficient bond strength of composite resin to porcelain restorations without bond failure during the treatment is a challenge for orthodontists. METHODS In total, 80 glazed feldspathic porcelain samples were prepared and randomly assigned to four groups of 20. Treated surfaces were treated with a silane agent. Brackets were bonded to porcelain samples. The specimens were stored in distilled water for 24 h and then thermocycled for 500 cycles between 5° and 55°C. The SBS of the brackets was tested with a universal testing machine at a crosshead speed of 1 mm/min, until bonding failure occurred. The data were analyzed statistically using analysis of variance (ANOVA) and Tamhane multiple comparisons tests. The results of ANOVA indicated that the SBS values varied according to the surface treatment method (p<0.001). RESULTS Results of the Tamhane post-hoc tests indicated that the bond strength in Group NY (5.11±1.53) was significantly lower than the other groups (p<0.05). There were no statistically significant differences among Groups SB (9.07±3.76), HF (9.09±3.51), and FS (11.58±4.16) (p=0.28). CONCLUSIONS The results of this study showed that FS treatment produced high SBS of the processes assessed; therefore, it appears to be an effective method for bonding orthodontic metal brackets to prepared porcelain surfaces.
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Affiliation(s)
- Yusuf Ziya Akpinar
- 1 Department of Prosthodontics, Faculty of Dentistry, University of Abant Izzet Baysal , Bolu, Turkey
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20
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Kara O, Kara HB, Tobi ES, Ozturk AN, Kilic HS. Effect of Various Lasers on the Bond Strength of Two Zirconia Ceramics. Photomed Laser Surg 2015; 33:69-76. [DOI: 10.1089/pho.2014.3841] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ozlem Kara
- Department of Prosthodontics, BezmialemVakif University, Faculty of Dentistry, Istanbul, Turkey
| | - Haluk Baris Kara
- Department of Prosthodontics, Faculty of Dentistry, Medipol University, Istanbul, Turkey
| | - Elif Sumeyye Tobi
- Department of Prosthodontics, University of Selcuk, Faculty of Dentistry, Konya, Turkey
| | - Atiye Nilgun Ozturk
- Department of Prosthodontics, University of Selcuk, Faculty of Dentistry, Konya, Turkey
| | - Hamdi Sukur Kilic
- Department of Physics, University of Selcuk, Faculty of Science, Konya, Turkey
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21
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Ultrashort pulsed laser conditioning of human enamel: in vitro study of the influence of geometrical processing parameters on shear bond strength of orthodontic brackets. Lasers Med Sci 2013; 30:891-900. [DOI: 10.1007/s10103-013-1491-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 11/05/2013] [Indexed: 11/26/2022]
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