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Ok U, Yilmaz BS, Ramoglu SI. Laser-Aided Enamel Conditioning: A Comparison of Microleakage Under Brackets Following Different Aging Procedures. JOURNAL OF ADVANCED ORAL RESEARCH 2019. [DOI: 10.1177/2320206819873823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective: To evaluate microleakage under the orthodontic adhesives applied following two version of erbium:yttrium aluminum garnet (Er:YAG) laser-aided enamel conditioning after thermal and thermomechanical simulators. Materials and Methods: A comparative analytical study based on metal braces bonded on the enamel of extracted teeth ( n = 160) etched with acid, Er:YAG laser and Er:YAG laser with an X-Runner handpiece, and self-etch adhesives. An arch wire was ligatured to samples which were embedded in acrylic blocks by two with periodontal ligaments. The specimens were subdivided into two groups: those aged with thermal cycling and thermomechanical aging procedures. The samples were immersed in basic fuchsin solution (0.5%) for 24 h. Buccolingual sections were performed on the mesial and distal wings of the braces. The color penetration at the gingival and occlusal margins of the adhesive-bracket and enamel-adhesive was evaluated under a stereomicroscope. The median and mean values of microleakage in both groups were evaluated with Kruskal–Wallis and Mann–Whitney U tests ( P < .05). Results: The highest microleakage was recorded in the gingival part of the samples aged with the thermomechanical aging procedure ( P = .001). The amount of microleakage generally increased in the samples subjected to thermomechanical loading, but the only significant difference was recorded in the gingival part in each four different conditioning methods. Conclusion: Microleakage of the phosphoric acid-etched groups was recorded with lower values for both aging methods. Thermomechanical aging should be included to microleakage studies due to increased microleakage on gingival side for all etching groups.
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Affiliation(s)
- Ufuk Ok
- Department of Orthodontics, Faculty of Dentistry, Istanbul Aydin University, Istanbul, Turkey
| | - Berza Sen Yilmaz
- Department of Orthodontics, Faculty of Dentistry, Bezmialem Vakif University, Istanbul, Turkey
| | - Sabri Ilhan Ramoglu
- Department of Orthodontics, Faculty of Dentistry, Altinbas University, Istanbul, Turkey
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Ozel E, Tuna EB, Firatli S, Firatli E. Effect of different parameters of Er:YAG laser irradiations on class V composite restorations: A scanning electron microscopy study. SCANNING 2016; 38:434-441. [PMID: 26750663 DOI: 10.1002/sca.21292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 12/17/2015] [Indexed: 06/05/2023]
Abstract
The purpose of this study was to compare different parameters of Er:YAG laser irradiations on the marginal microleakage of Class V resin composite restorations. A total of 45 extracted premolars were selected for the study. Class V cavities prepared on both buccal and lingual surfaces of teeth by Er:YAG laser or bur and divided into nine groups. The occlusal margins were in enamel and the cervical margins were in cementum. Group-1: bur preparation; Group-2: laser preparation (lp) (600 mJ/5 Hz); Group-3: lp (300 mJ/10 Hz); Group-4: lp (200 mJ/15 Hz); Group-5: lp (150 mJ/20 Hz); Group-6: lp (200 mJ/20 Hz); Group-7: lp (300 mJ/14 Hz); Group-8: lp (400 mJ/10 Hz); Group-9: lp (700 mJ/5 Hz). All teeth were stored in distilled water at 37°C for 24 h, then thermocycled 1,000 times (5-55°C). Five teeth from each group were chosen for the microleakage investigation and two teeth for the scanning electron microscope (SEM) evaluation. Teeth, which were prepared for the microleakage test were immersed in 0.5% methylene blue dye for 24 h. After immersing, the teeth were sectioned and observed under a stereomicroscope for dye penetration. Data were analyzed by Kruskal-Wallis and Mann-Whitney U tests (p < 0.05). More microleakage was observed in cervical regions compared to occlusal regions in all groups (p < 0.05) except for Group 6 (p > 0.05). No significant difference was observed among groups in terms of occlusal and cervical surfaces, separately (p > 0.05). It may be concluded that the cavities prepared by Er:YAG laser showed higher degree of microleakage than bur prepared at cervical regions. Different parameters of Er:YAG laser irradiations affected microleakage. SCANNING 38:434-441, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Emre Ozel
- Department of Restorative Dentistry, Faculty of Dentistry, University of Kocaeli, Kocaeli, Turkey.
| | - Elif Bahar Tuna
- Department of Pediatric Dentistry, Faculty of Dentistry, University of Istanbul, Istanbul, Turkey
| | - Sonmez Firatli
- Department of Orthodontics, Faculty of Dentistry, University of Istanbul, Istanbul, Turkey
| | - Erhan Firatli
- Department of Periodontology, Faculty of Dentistry, University of Istanbul, Istanbul, Turkey
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Ozel E, Tuna EB, Firatli E. The effects of cavity-filling techniques on microleakage in class II resin restorations prepared with Er:YAG laser and diamond bur: A scanning electron microscopy study. SCANNING 2016; 38:389-395. [PMID: 26538487 DOI: 10.1002/sca.21282] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 10/12/2015] [Indexed: 06/05/2023]
Abstract
The purpose of this study was to investigate how two cavity-filling techniques affect microleakage in class II resin restorations prepared with Er:YAG laser and diamond bur. Standard MO and DO cavities were prepared in 20 extracted third molars, each randomly assigned to either Group-1 [Herculite XRV Ultra-bur-prepared cavity(bp)], Group-2 [Herculite XRV Ultra-laser-prepared cavity(lp)], Group-3 (SonicFill-(bp)], or Group-4 [SonicFill-(lp)]. For Groups 2 and 4, cavities were prepared by using an Er:YAG laser with a wavelength of 2.94 μm, output power of 200 mJ/pulse, and repetition rate of 20Hz. Teeth were restored with a one-step, self-etch adhesive material (OptiBond All-in-One), a nanohybrid composite (Herculite XRV Ultra), and a bulk-fill composite (SonicFill) according to the manufacturer's instructions. Five teeth from each group were chosen for microleakage investigation and two teeth for scanning electron microscope evaluation. Statistical analysis was performed by using Kruskal-Wallis test. Pair-wise comparisons were performed by Mann-Whitney U test with Bonferroni correction (p < 0.05). The statistical analysis of data revealed greater microleakage in cervical versus occlusal regions in all groups (P < 0.05). Group-2 yielded a higher degree of marginal leakage than Group-3 in terms of occlusal surfaces (p < 0.05). For cervical regions, a statistically significant difference was observed between Groups 2 and 3 as well as Groups 2 and 4 (p < 0.05). Group-3 exhibited significantly better marginal sealing than Group-1 in the cervical region (p < 0.05). The cavities prepared using an Er:YAG laser showed greater microleakage than those conventionally prepared using burs regardless of restorative material at both occlusal and cervical margins. SCANNING 38:389-395, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Emre Ozel
- Department of Restorative Dentistry, Faculty of Dentistry, University of Kocaeli, Kocaeli, Turkey.
| | - Elif Bahar Tuna
- Department of Pediatric Dentistry, Faculty of Dentistry, University of Istanbul, Istanbul, Turkey
| | - Erhan Firatli
- Department of Periodontology, Faculty of Dentistry, University of Istanbul, Istanbul, Turkey
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4
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Korkmaz FM, Baygin O, Tuzuner T, Bagis B, Arslan I. The effect of an erbium, chromium: yttrium-scandium-gallium-garnet laser on the microleakage and bond strength of silorane and micro-hybrid composite restorations. Eur J Dent 2014; 7:S033-S040. [PMID: 24966726 PMCID: PMC4054077 DOI: 10.4103/1305-7456.119061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Objective: The aim of this in vitro study was to compare the microleakage and bond strength of Class V silorane-based and universal micro-hybrid composite restorations prepared either with diamond bur or with an erbium, chromium: yttrium-scandium-gallium-garnet (Er, Cr:YSGG) laser. Materials and Methods: A total of 160 molar teeth were used for microleakage assessment and shear bond strength (SBS) test. The specimens were prepared using either diamond bur or 3 W-, 4 W- and 5 W-20 Hz Er, Cr:YSGG laser irradiation. All specimens were subjected to thermocycling (500 times at 5 ± 2°C to 55 ± 2°C, dwell time 15 s and transfer time 10 s). Microleakage was assessed using a 0.5% basic-fuchsin solution. The bond strengths were determined using a microtensile tester at a crosshead speed of 0.5 mm/min. The Kruskal Wallis test was used for the analysis of microleakage and a one-way analysis of variance test was used to analyze the SBS (P < 0.05). Results: No statistically significant differences were found (P > 0.05) between Er, Cr:YSGG laser and bur preparation methods regarding microleakage and bond strength values. Conclusion: Irradiation with Er, Cr:YSGG laser was confirmed to be as effective as conventional methods for preparing cavities before adhesive restorations.
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Affiliation(s)
- Fatih Mehmet Korkmaz
- Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
| | - Ozgul Baygin
- Department of Pediatric Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
| | - Tamer Tuzuner
- Department of Pediatric Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
| | - Bora Bagis
- Department of Prosthodontics, Faculty of Dentistry, Izmir Katip Çelebi University, Izmir, Turkiye
| | - Ipek Arslan
- Department of Pediatric Dentistry, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
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Davari A, Sadeghi M, Bakhshi H. Shear Bond Strength of an Etch-and-rinse Adhesive to Er:YAG Laser- and/or Phosphoric Acid-treated Dentin. J Dent Res Dent Clin Dent Prospects 2013; 7:67-73. [PMID: 23875083 PMCID: PMC3713863 DOI: 10.5681/joddd.2013.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 02/24/2013] [Indexed: 11/17/2022] Open
Abstract
Background and aims. Er:YAG laser irradiation has been claimed to improve the adhesive properties of dentin; therefore, it has been proposed as an alternative to acid etching. The aim of this in vitro study was to investigate the shear bond strength of an etch-and-rinse adhesive system to dentin surfaces following Er:YAG laser and/or phosphoric acid etching. Materials and methods. The roots of 75 sound maxillary premolars were sectioned below the CEJ and the crowns were embedded in auto-polymerizing acrylic resin with the buccal surfaces facing up. The buccal surfaces were ground using a diamond bur and polished until the dentin was exposed; the samples were randomly divided into five groups (n=15) according to the surface treatment: (1) acid etching; (2) laser etching; (3) laser etching followed by acid etching; (4) acid etching followed by laser etching and (5) no acid etching and no laser etching (control group). Composite resin rods (Point 4, Kerr Co) were bonded to treated dentin surfaces with an etch-and-rise adhesive system (Optibond FL, Kerr Co) and light-cured.After storage for two weeks at 37°C and 100% humidity and then thermocycling, bond strength was measured with a Zwick Universal Testing Machine at a crosshead speed of 1 mm/min. Data was analyzed using parametric and non-parametric tests (P<0.05). Results. Mean shear bond strength for acid etching (20.1±1.8 MPa) and acid+laser (15.6±3.5 MPa) groups were significantly higher than those for laser+acid (15.6±3.5 MPa), laser etching (14.1±3.4 MPa) and control (8.1±2.1 MPa) groups. However, there were no significant differences between acid etching and acid+laser groups, and between laser+acid and laser groups. Conclusion. When the cavity is prepared by bur, it is not necessary to etch the dentin surface by Er:YAG laser following acid etching and acid etching after laser etching.
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Affiliation(s)
- Abdolrahim Davari
- Associate Professor, Department of Restorative Dentistry, Faculty of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Ayuk SM, Houreld NN, Abrahamse H. Collagen production in diabetic wounded fibroblasts in response to low-intensity laser irradiation at 660 nm. Diabetes Technol Ther 2012; 14:1110-7. [PMID: 23057714 DOI: 10.1089/dia.2012.0125] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Collagen type I (Col-I) is a major component of the extracellular matrix and is important in wound healing processes. Several studies have shown that low-intensity laser irradiation (LILI) biostimulates Col-I synthesis both in vitro and in vivo. This study aimed to determine if LILI affects collagen production and related cellular responses in an in vitro diabetic wounded fibroblast model. MATERIALS AND METHODS This study was performed on isolated human skin fibroblasts. Different cell models (normal and diabetic wounded) were used. Cells were irradiated with 5 J/cm(2) at a wavelength of 660 nm and incubated for 48 or 72 h. Nonirradiated cells (0 J/cm(2)) were used as controls. Cellular viability (Trypan blue exclusion test), morphology (bright-field microscopy), proliferation [VisionBlue™ quick cell proliferation assay and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay], and Col-I (enzyme-linked immunoabsorbent assay) were assessed. RESULTS Diabetic wounded cells irradiated with 5 J/cm(2) at 660 nm showed a significant increase in cell migration, viability, proliferation, and collagen content. CONCLUSIONS This study shows that LILI stimulates Col-I synthesis in diabetic wound healing in vitro at 660 nm.
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Affiliation(s)
- Sandra M Ayuk
- Laser Research Centre, Faculty of Health Sciences, University of Johannesburg, Doornfontein, South Africa
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7
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Microleakage of Er:YAG laser and dental bur prepared cavities in primary teeth restored with different adhesive restorative materials. Lasers Med Sci 2012; 28:1453-60. [PMID: 23135785 DOI: 10.1007/s10103-012-1222-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 10/25/2012] [Indexed: 10/27/2022]
Abstract
The purpose of this study was to evaluate and compare the effect of erbium:yttrium-aluminum-garnet (Er:YAG) laser irradiation and conventional dental bur cavity preparation on in vitro microleakage of class V cavities restored with different adhesive restorative materials and two types of self-etching adhesives in primary teeth. Standard class V cavities were prepared on 80 extracted primary, and the teeth were randomly divided into eight subgroups prepared either by dental bur or Er:YAG laser irradiation and then restored with self-cured glass ionomer (GI), resin-modified glass ionomer (RMGI), resin composite and Clearfil SE Bond (two-step self-etching adhesive), and resin composite and Clearfil S3 Bond (one-step self-etching adhesive). Restorations were finished and stored in distilled water at 37 °C for 24 h and then subjected to thermocycling. All the teeth were sealed with nail varnish, placed in a silver nitrate solution, and then vertically cut in a buccolingually direction. Subsequently, the specimens were evaluated for gingival and occlusal microleakage using a stereomicroscope. Data were analyzed using Kruskal-Wallis test followed by Mann-Whitney test. Wilcoxon test was used for comparing occlusal microleakage with gingival microleakage at p < 0.05. A higher degree of occlusal and gingival microleakage values for the teeth restored with GI or RMGI was obtained by both preparation methods compared with that of resin composites and the two self-etching primers. Er:YAG laser irradiation resulted in a significantly higher degree of microleakage only at the gingival margins for teeth restored with GI or RMGI, or composite and Clearfil S3 Bond compared with the bur preparation. The Er:YAG laser-prepared teeth restored with composite and Clearfil SE Bond demonstrated a better marginal seal on occlusal and gingival margins compared with that of bur-prepared cavities. The degree of microleakage in class V cavities was affected by the type of adhesive restorative materials, type of self-etching adhesive, cavity margin location, and tooth preparation method either by Er:YAG laser or dental bur.
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Gorseta K, Glavina D, Skrinjaric I. Influence of ultrasonic excitation and heat application on the microleakage of glass ionomer cements. Aust Dent J 2012. [DOI: 10.1111/j.1834-7819.2012.01724.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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BAYGIN O, KORKMAZ FM, ARSLAN I. Effects of different types of adhesive systems on the microleakage of compomer restorations in Class V cavities prepared by Er,Cr:YSGG laser in primary teeth. Dent Mater J 2012; 31:206-14. [DOI: 10.4012/dmj.2011-133] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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The effect of different enamel surface treatments on the microleakage of fissure sealants. Lasers Med Sci 2011; 27:153-60. [PMID: 21476043 DOI: 10.1007/s10103-011-0918-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Accepted: 03/17/2011] [Indexed: 10/18/2022]
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Ozel E, Korkmaz Y, Attar N, Bicer CO, Firatli E. Leakage Pathway of Different Nano-Restorative Materials in Class V Cavities Prepared by Er:YAG Laser and Bur Preparation. Photomed Laser Surg 2009; 27:783-9. [DOI: 10.1089/pho.2008.2313] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Emre Ozel
- Department of Operative Dentistry, Faculty of Dentistry, University of Kocaeli, Kocaeli, Turkey
| | - Yonca Korkmaz
- Department of Conservative Dentistry, Faculty of Dentistry, Baskent University, Ankara, Turkey
| | - Nuray Attar
- Department of Conservative Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Ceren Ozge Bicer
- Department of Conservative Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey
| | - Erhan Firatli
- Department of Periodontology, School of Dentistry, University of Istanbul, Istanbul, Turkey
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12
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Perito MAM, Jorge ACT, de Freitas PM, Cassoni A, Rodrigues JA. Cavity Preparation and Influence of Restorative Materials on the Prevention of Secondary Caries. Photomed Laser Surg 2009; 27:729-34. [PMID: 19712022 DOI: 10.1089/pho.2008.2394] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Mario Alberto Marcondes Perito
- DDS, Dental Research and Graduate Studies, Division Department of Restorative Dentistry, Guarulhos University, Guarulhos, SP, Brazil
| | - Ana Carolina Tedesco Jorge
- DDS, Dental Research and Graduate Studies, Division Department of Restorative Dentistry, Guarulhos University, Guarulhos, SP, Brazil
| | - Patrícia Moreira de Freitas
- Special Laboratory of Lasers in Dentistry, Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Alessandra Cassoni
- DDS, Dental Research and Graduate Studies, Division Department of Restorative Dentistry, Guarulhos University, Guarulhos, SP, Brazil
| | - José Augusto Rodrigues
- DDS, Dental Research and Graduate Studies, Division Department of Restorative Dentistry, Guarulhos University, Guarulhos, SP, Brazil
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In vitro evaluation of microleakage under orthodontic brackets using two different laser etching, self etching and acid etching methods. Lasers Med Sci 2009; 25:811-6. [PMID: 19562404 DOI: 10.1007/s10103-009-0704-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2009] [Accepted: 06/12/2009] [Indexed: 10/20/2022]
Abstract
This study evaluated the microleakage of brackets bonded by four different enamel etching techniques. Forty freshly extracted human premolars were divided randomly into four equal groups and received the following treatment: group 1, acid etching; group 2, self-etching primer (SEP); group 3, erbium:yttrium-aluminum-garnet (Er:YAG) laser etching; and group 4, erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser etching. After photopolymerization, the teeth were kept in distilled water for 1 month and then subjected to 500 thermal cycles. Then, the specimens were sealed with nail varnish, stained with 0.5% basic fuchsin for 24 h, sectioned, and examined under a stereomicroscope. In addition, they were scored for marginal microleakage at the adhesive-enamel and bracket-adhesive interfaces from the incisal and gingival margins. Statistical analyses consisted of the Kruskal-Wallis test and the Mann-Whitney U test with Bonferroni correction. Microleakage occurred between the adhesive-enamel and bracket-adhesive interfaces in all groups. For the adhesive-enamel surface, a significant difference was observed between group 1 and groups 2 (P = 0.011), 3 (P = 0.002), and 4 (P = 0.000) on the gingival side. Overall, significant differences were observed between group 1 and groups 3 (P = 0.003) and 4 (P = 0.000). In dental bonding procedures, acid etching was found to result in the least microleakage. Since etching with a laser decreases the risk of caries and is time-saving, it may serve as an alternative to acid etching.
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Osuka K, Amagai T, Kukidome N, Takase Y, Aida S, Hirai Y. Effect of Dentin Hardness on Ablation Rate with Er:YAG Laser. Photomed Laser Surg 2009; 27:395-9. [PMID: 19025406 DOI: 10.1089/pho.2007.2163] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Keigo Osuka
- Department of Operative Dentistry, Tokyo Dental College, Chiba, Japan
| | - Tetsuya Amagai
- Department of Operative Dentistry, Tokyo Dental College, Chiba, Japan
| | - Nobuyuki Kukidome
- Department of Operative Dentistry, Tokyo Dental College, Chiba, Japan
| | - Yasuaki Takase
- Department of Operative Dentistry, Tokyo Dental College, Chiba, Japan
| | - Shigeo Aida
- Department of Oral Hygiene, Chiba College of Health Science, Chiba, Japan
| | - Yoshito Hirai
- Department of Operative Dentistry, Tokyo Dental College, Chiba, Japan
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15
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Attar N, Korkmaz Y, Ozel E, Bicer CO, Firatli E. Microleakage of class V cavities with different adhesive systems prepared by a diamond instrument and different parameters of Er:YAG laser irradiation. Photomed Laser Surg 2009; 26:585-91. [PMID: 19099387 DOI: 10.1089/pho.2007.2203] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [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 microleakage of composite resin restorations using two different dentine adhesive systems prepared with a diamond instrument and different parameters of Er:YAG laser irradiation. BACKGROUND DATA Information on this topic with regard to preparing class V cavities with different parameters of Er:YAG laser irradiation and adhesive systems is scarce. MATERIALS AND METHODS Two hundred class V cavities were assigned to ten groups (n = 20 each): group 1: Er:YAG laser (5 Hz, 600 mJ) + phosphoric acid (PA) + Adper Single Bond 2 (ASB2); group 2: Er:YAG laser (10 Hz, 300 mJ) + PA + ASB2; group 3: Er:YAG laser (15 Hz, 200 mJ) + PA + ASB2; group 4: Er:YAG laser (20 Hz, 150 mJ) + PA + ASB2; group 5: diamond instrument + PA + ASB2; group 6: Er:YAG laser (5 Hz, 600 mJ) + Adper Prompt L-Pop (APLP); group 7: Er:YAG laser (10 Hz, 300 mJ) + APLP; group 8: Er:YAG laser (15 Hz, 200 mJ) + APLP; group 9: Er:YAG laser (20 Hz, 150 mJ) + APLP; and group 10: diamond instrument + APLP. Cavities were restored with a nanofill composite (Filtek Supreme XT Body). After thermocycling, the specimens were stained with 0.5% aqueous basic fuchsin dye and sectioned bucco-lingually. Dye penetration was then scored. The data were analyzed using the Kruskal-Wallis and Mann-Whitney U tests with Bonferroni correction. The Wilcoxon signed ranks test was used to compare occlusal and gingival scores. RESULTS Leakage was seen in all groups at both the occlusal and gingival margins. The Kruskal-Wallis test showed statistically significant differences among the 10 groups (p < 0.001). The gingival margins had more microleakage than the occlusal margins (p < 0.001). Pairwise analysis by the Mann-Whitney U test showed that statistically significant differences (p < 0.05) in microleakage were found between groups 3 and 5 (3 > 5), 5 and 7 (7 > 5), and 7 and 8 (7 > 8) at the gingival margin, and between groups 3 and 6 (6 > 3), 3 and 7 (7 > 3), 4 and 6 (6 > 4), and 4 and 7 (7 > 4) at the occlusal margin. CONCLUSION We concluded that for all groups, microleakage values were higher at the gingival margins. The use of the Er:YAG laser for cavity preparation with different parameters and different dentine adhesive systems influenced the marginal sealing of composite resin restorations.
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Affiliation(s)
- Nuray Attar
- Department of Conservative Dentistry, Hacettepe University, Faculty of Dentistry, Ankara, Turkey.
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Delmé KI, Cardoso MV, Mine A, De Moor RJ, Meerbeek BV. Transmission Electron Microscopic Examination of the Interface Between a Resin-Modified Glass-Ionomer and Er:YAG Laser-Irradiated Dentin. Photomed Laser Surg 2009; 27:317-23. [DOI: 10.1089/pho.2008.2278] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Katleen I.M. Delmé
- Department of Operative Dentistry and Endodontology, Ghent Dental Laser Center, Dental School, Ghent University, Ghent, Belgium
| | - Marcio Vivan Cardoso
- Department of Conservative Dentistry, Leuven BIOMAT Research Cluster, School of Dentistry, Oral Pathology and Maxillofacial Surgery, Catholic University of Leuven, Leuven, Belgium
| | - Atsushi Mine
- Department of Conservative Dentistry, Leuven BIOMAT Research Cluster, School of Dentistry, Oral Pathology and Maxillofacial Surgery, Catholic University of Leuven, Leuven, Belgium
| | - Roeland J.G. De Moor
- Department of Operative Dentistry and Endodontology, Ghent Dental Laser Center, Dental School, Ghent University, Ghent, Belgium
| | - Bart Van Meerbeek
- Department of Conservative Dentistry, Leuven BIOMAT Research Cluster, School of Dentistry, Oral Pathology and Maxillofacial Surgery, Catholic University of Leuven, Leuven, Belgium
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17
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Delmé KI, Deman PJ, De Bruyne MA, De Moor RJG. Microleakage of Four Different Restorative Glass Ionomer Formulations in Class V Cavities: Er:YAG Laser versus Conventional Preparation. Photomed Laser Surg 2008; 26:541-9. [DOI: 10.1089/pho.2007.2227] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Katleen I.M. Delmé
- Department of Operative Dentistry and Endodontology, Ghent Dental Laser Center, Dental School, Ghent University, Gent, Belgium
| | - Peter J. Deman
- Dentist in private practice, Sint-Pieters-Leeuw, Belgium
| | - Mieke A.A. De Bruyne
- Department of Operative Dentistry and Endodontology, Ghent Dental Laser Center, Dental School, Ghent University, Gent, Belgium
| | - Roeland J. G. De Moor
- Department of Operative Dentistry and Endodontology, Ghent Dental Laser Center, Dental School, Ghent University, Gent, Belgium
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Osuka K, Amagai T, Kukidome N, Takase Y, Aida S, Hirai Y. Effect of dentin hardness on ablation rate with Er:YAG laser. Photomed Laser Surg 2008. [PMID: 19025406 DOI: 10.1089/pho.2008.2163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE This study used artificially demineralized bovine dentin to ascertain the effect of hardness of demineralized dentin on ablation rate with the Er:YAG laser. BACKGROUND DATA Before restoration of carious teeth, it is necessary to ablate any infected dentin that cannot be remineralized due to softening by the invading caries. A correlation has been suggested between the ablation efficiency of the Er:YAG laser and the progression of caries in dentin. To the best of our knowledge, no studies have investigated the relationship between degree of demineralization by dentinal caries and ablation rate with the Er:YAG laser. MATERIALS AND METHODS Bovine mandibular anterior tooth roots were used as dentin samples. Each sample was soaked in a demineralizing solution (2 M lactic acid, pH 4.0) for 3 d to obtain demineralized dentin (DD) samples. Another group of samples were prepared without demineralization as a sound dentin (SD) group for comparison. After determining the Knoop hardness number (KHN) of each sample, the dentin surface was ablated with an Er:YAG laser. Tip output and pulse rate were set at 50 mJ and 20 pulses per second (pps), respectively, and the water spray was set at 3.5 mL/min. Ablation width, depth, and volume were measured following irradiation. RESULTS In the DD group, dentin hardness was 10.4 +/- 1.6 KHN at 100 microm from the surface. In the sound dentin group, Knoop hardness was 51.0 +/- 1.6 KHN cross-sectionally throughout. No differences were observed from the surface to a depth of 2000 microm. In the DD group, dentin ablation volume at the superficial demineralized layer was 2888 +/- 272 x 10(4) microm. In the SD group, dentin ablation volume was 1298 +/- 219 microm(3). The relationship between ablation volume and Knoop hardness was defined as Y = -40.699x + 3350, revealing a marked negative correlation. CONCLUSION The results demonstrate that the ablation volume for demineralized dentin was greater than that for sound dentin. The results suggest that the Er:YAG laser is capable of ablating infected dentin without damaging sound dentin by adjustment of tip output and pulse rate.
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Affiliation(s)
- Keigo Osuka
- Department of Operative Dentistry Tokyo Dental College, Chiba, Japan.
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Microleakage of glass ionomer formulations after erbium:yttrium–aluminium–garnet laser preparation. Lasers Med Sci 2008; 25:171-80. [DOI: 10.1007/s10103-008-0598-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2008] [Accepted: 07/10/2008] [Indexed: 10/21/2022]
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20
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Jordehi AY, Ghasemi A, Zadeh MM, Fekrazad R. Evaluation of Microtensile Bond Strength of Glass Ionomer Cements to Dentin after Conditioning with the Er,Cr:YSGG Laser. Photomed Laser Surg 2007; 25:402-6. [DOI: 10.1089/pho.2006.2074] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Atefeh Yousefi Jordehi
- Department of Operative Dentistry, Dental School, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Amir Ghasemi
- Department of Operative Dentistry, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Moezi Zadeh
- Department of Laser, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Fekrazad
- Department of Laser, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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