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Hamidi S, Kahyaie-Aghdam M, Ebrahimi-Chaharom ME, Abed-Kahnamouei M, Dabaghi-Tabriz F. Effect of the Nd:YAG laser on the micro-tensile bond strength of composite resin to dentin with hypersensitivity using different universal adhesives. J Clin Exp Dent 2024; 16:e685-e692. [PMID: 39130366 PMCID: PMC11310977 DOI: 10.4317/jced.61493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 03/26/2024] [Indexed: 08/13/2024] Open
Abstract
Background This study aimed to evaluate the effect of the Nd: YAG laser on the tensile bond strength of composite resin to dentin with hypersensitivity using different universal bonding systems. Material and Methods After cutting the crown of 252 molars, buccal cervical enamel was removed at a thickness of approximately 2 mm, and 252 smooth dentin surfaces were exposed. Then they were etched with 0.5 M ethylenediaminetetraacetic acid (pH = 7.4) to stimulate hypersensitivity. The specimens were then randomly divided into 12 groups (n= 21) according to the surface treatments performed. After etching and bonding according to the manufacturer's recommendations in each group, the entire dentin surface was restored with Valux Plus composite resin. The samples were thermocycled and a universal test machine was used to measure the microtensile bond strength. The failure mode for each sample was observed under a stereomicroscope. For data analysis, the Bonferroni test, the independent t-test and the three-way anova test were used. Results The average microtensile bond strength in non-laser samples was higher than the average in laser samples (P<0.001). In comparison with the bonding agent type in both cases with and without laser, the highest average microtensile bond strength was related to ALL-BOND (P<0.001), meanwhile the lowest average tensile strength in samples without laser was related to G-Premio universal adhesive (P<0.001), and the lowest average microtensile strength in samples with laser belonged to Prime and Bond Elect group (P<0.001). Conclusions Nd: YAG laser irradiation of the dentin surface before applying the adhesive significantly decreased the microtensile bond strength of the composite resin to the dentin surface. Key words:Nd:YAG laser, Bond strength, Dentin, hypersensitivity, Universal adhesives.
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Affiliation(s)
- Salim Hamidi
- Assistant professor, Department of Operative Dentistry, Faculty of Dentistry, Urmia University of Medical Sciences, Urmia, Iran
| | - Mina Kahyaie-Aghdam
- Assistant professor, Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mahdi Abed-Kahnamouei
- Associate professor, Department of Operative Dentistry, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Dabaghi-Tabriz
- Associate professor, Department of Restorative Dentistry, Faculty of dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Sharafeddin F, Moraveji P. Comparison the Effect of Bromelain Enzyme, Phosphoric Acid, and Polyacrylic Acid Treatment on Microleakage of Composite and Glass Ionomer Restorations. JOURNAL OF DENTISTRY (SHIRAZ, IRAN) 2022; 23:175-182. [PMID: 36380843 PMCID: PMC9652053 DOI: 10.30476/dentjods.2021.88737.1355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 11/21/2020] [Accepted: 05/21/2021] [Indexed: 12/03/2022]
Abstract
Statement of the Problem Resin modified glass-ionomer cement (RMGIC) shows low microleakage values. Bromelain enzyme is a deproteinizing agent with an anti-inflammatory effect in human body.Efective cavity treatment is an important factor in reduction of microleakage. Purpose The aim of this study was to determine the effectiveness of the deproteinizing aspect of 10% bromelain enzyme on the microleakage of RMGIC and composite restorations. Materials and Method In this experimental study, 40 non-carious extracted human molar teeth were categorized in eight experimental groups (n=5). Standard class V cavities were prepared on the buccal and lingual surfaces of the teeth (n=10). The specimen were classified as Group 1, in which 20% polyacrylic acid (PAA) was applied on the teeth then treated with 10% bromelain enzyme; Group 2: 10% bromelain enzyme was applied; Group 3: 10% bromelain enzyme was applied and then treated with polyacrylic acid; Group 4: 20% polyacrylic acid was applied. Groups1 to 4 were restored with RMGIC (Fuji II LC, GC, Japan). Group 5: etched by 37% phosphoric acid and then treated by 10% bromelain; Group 6: 10% bromelain enzyme was applied without etching; Group 7: teeth were deproteinized with 10% bromelain enzyme and then etched with 37% phosphoric acid; and Group 8: cavities were etched with 37% phosphoric acid. In the groups 5 to 8, Adper single bond (3M, ESPE, USA) and filled with composite resin Z350 (3M, ESPE, USA). After thermocycling, the teeth were sectioned. Microleakage scores were measured using stereomicroscope (40×). Kruskal-Wallis and Mann-Whitney tests were used for data analysis. (p< 0.05). Results Statistical analysis did not show any significant difference in occlusal and gingival margin microleakage in glass ionomer groups (1-4) (occlusal p= 0.218, gingival p= 0.192). Kruskal-Wallis revealed significant difference in occlusal and gingival margin microleakage of Groups 5 to 8 (occlusal p= 0.006 and gingival p= 0.00). Group 5 demonstrated the lowest occlusal microleakage (occlusal mean=0.00). Conclusion Applying bromelain or polyacrylic acid did not affect the microleakage of glass ionomer filling. Due to the antinflamatory effects of bromelain, we suggest using it instead of PAA. Pretreatment of 10% bromelain enzyme after phosphoric acid significantly decreased microleakage in the occlusal and gingival margin of composite filling.
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Affiliation(s)
- Farahnaz Sharafeddin
- Dept. of Operative Dentistry, Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Paniz Moraveji
- Undergraduate Student, Dept. of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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Arslan I, Baygin O, Tuzuner T, Erdemir F, Canakci A, Korkmaz FM. The effects of cavity disinfection on the nanoleakage of compomer restorations: an in vitro study. Eur Oral Res 2020; 54:16-24. [PMID: 32518906 PMCID: PMC7252532 DOI: 10.26650/eor.20200053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Purpose: Cavity disinfection, in addition to routine caries removal methods, is recommended
to eliminate the microorganisms. The aim of this study was to compare the effect
of various systems Er,Cr:YSGG lasers, diode lasers and FotoSan and agents Corsodyl;
Cervitec and Cervitec Plus and Fluor Protector—on the nanoleakage of compomer
restorations when used for cavity disinfection. Materials and methods: A total of 40 intact human deciduous molar teeth containing Black V cavities (3×2×1.5
mm) on the buccal and lingual surfaces parallel to the cementoenamel junction
were randomly divided into 8 groups according to the cavity disinfection methods.
The antibacterial agents and systems were applied according to the manufacturer’s
instructions. Restorations were completed using a compomer. The restored teeth
were then subjected to thermocycling for 500 cycles in a water bath at 5°C and 55°C
with a dwell time of 30 seconds. After the thermocycling procedures, 1-mm sticks
were obtained from the center of each cavity to prepare for the nanoleakage test.
After the teeth were sectioned, they were immersed in 50 wt % ammoniacal silver
nitrate solution for 24 hours and dipped in photo-developing solutions for 8 hours
with fluorescent light irradiation. The samples were examined under a scanning
electron microscope (SEM). The non-parametric Kruskal-Wallis and Mann-Whitney
U test (p<0.05) were applied. Results: The Er,Cr:YSGG laser group showed significantly less nanoleakage than all of
the tested groups (p<0.01). The diode laser, Fluor protector and FotoSan groups
showed similar nanoleakage to that of the control group (p>0.05). The Corsodyl
(p<0.01) and Cervitec (p<0.001) groups showed significantly higher nanoleakage
than the control group. Conclusion: Er,Cr:YSGG laser irradiation which showed lower nanoleakage scores from either
control or tested groups can be recommended for cavity disinfection Additionally,
a diode laser and FotoSan, which have antibacterial effects and no negative effect
on leakage, can be used for cavity disinfection.
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Affiliation(s)
- Ipek Arslan
- Recep Tayyip Erdoğan University, Faculty of Dentistry, Department of Pediatric Dentistry, Rize,Turkey
| | - Ozgul Baygin
- Karadeniz Technical University, Faculty of Dentistry, Department of Pediatric Dentistry, Trabzon, Turkey
| | - Tamer Tuzuner
- Karadeniz Technical University, Faculty of Dentistry, Department of Pediatric Dentistry, Trabzon, Turkey
| | - Fatih Erdemir
- Karadeniz Technical University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Trabzon,Turkey
| | - Aykut Canakci
- Karadeniz Technical University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Trabzon,Turkey
| | - Fatih Mehmet Korkmaz
- Karadeniz Technical University, Faculty of Dentistry, Department of Prosthodontic, Trabzon,Turkey
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Golbari N, Kasraei S, Afrasiabi A, Mostajir E, Mojahedi SM. Effect of Diode Laser (810 nm) Irradiation on Marginal Microleakage of Multi-mode Adhesive Resins in Class V Composite Restorations. J Lasers Med Sci 2019; 10:275-282. [PMID: 31875119 DOI: 10.15171/jlms.2019.45] [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] [Indexed: 11/09/2022]
Abstract
Introduction: Some studies have shown that laser irradiation on unpolymerized adhesives can improve composite-dentin adhesion. The aim of the present study was to evaluate the effect of the diode laser (810 nm) on the microleakage of multi-mode adhesive systems at enamel and dentin margins of composite restorations. Methods: Classic class V boxes were prepared on 48 sound premolar teeth and randomly divided into 6 groups (n=16). In the control groups, Scotchbond Universal (SBC), G-Premio (GBC), and Ambar U (AMC) were used by a self-etch mode. In the test groups (SBL, GBL, ABL), the 810 nm diode laser was irradiated (1 W) for 10 seconds before the polymerization of the adhesive. The boxes were restored by the resin composite. After finishing and polishing, the samples were thermocycled (5°C to 55°C) for 1000 cycles and then immersed in 0.1% methylene blue dye (48 hours). Dye penetration through the gingival and occlusal margins was measured by Stereomicroscope. The data were analyzed at the 5% significance level using Kruskal-Wallis and Mann-Whitney U tests. Results: Significant differences were found between the control and test groups (P < 0.05). The occlusal margins of the SBL and GBL groups and the cervical margin of the SBL group exhibited the lowest microleakage (P < 0.05). The AM control group showed maximum microleakage at cervical and occlusal margins. Conclusion: The irradiation of the 810 nm diode laser on the unpolymerized universal adhesive systems in a self-etch mode caused a significant reduction in enamel and dentin marginal microleakage of composite restorations.
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Affiliation(s)
- Niusha Golbari
- Dental Research Center, Restorative Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahin Kasraei
- Dental Research Center, Restorative Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Anahit Afrasiabi
- Dental Research Center, Restorative Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elahe Mostajir
- Dental Research Center, Restorative Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Masoud Mojahedi
- Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Sekhar A, Anil A, Thomas MS, Ginjupalli K. Effect of various dentin disinfection protocols on the bond strength of resin modified glass ionomer restorative material. J Clin Exp Dent 2017; 9:e837-e841. [PMID: 28828147 PMCID: PMC5549579 DOI: 10.4317/jced.53725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 04/08/2017] [Indexed: 11/22/2022] Open
Abstract
Background Disinfection of dentin surface prior to any restorative therapy is important for the longevity of the treatment rendered. However, these dentin disinfection methods should itself not interfere with the adhesion of the restorative material. Therefore the aim of this study was to determine the effect of various dentin disinfection protocols on the shear bond strength (SBS) of resin modified glass ionomer cement (RMGIC). Material and Methods The occlusal surface of 40 extracted premolars were trimmed to obtain a flat dentinal surface and was randomly divided into four groups. CTRL was the control group; NaOCl was 1% sodium hypochlorite disinfection group; CHX was 2% chlorhexidine disinfection group; and PAD was the photo-activated disinfection group. Then a predetermined dimension of RMGIC was bonded to the pre-treated dentin surfaces. Following this, each sample was tested for SBS using universal testing machine at a crosshead speed of 0.5mm/min. Results Among the test groups, CHX showed the least reduction in SBS and NaOCl the highest reduction in SBS as compared to the control group. PAD on the other hand showed significantly lower SBS than CTRL and CHX groups, but the values were higher than the NaOCl group. Conclusions Thus, it could be concluded from the present study that use of chlorhexidine based dentin disinfection does interfere with the adhesion of RMGIC. However, photo-activated disinfection should be done with caution. Moreover, sodium hypochlorite based disinfectants should be avoided prior to the use of RMGIC. Key words:Chlorhexidine, Dentin disinfection, Photo-activated disinfection, Resin modified glass ionomer cement, Shear bond strength, Sodium hypochlorite.
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Affiliation(s)
- Anand Sekhar
- Post graduate student, Dept. of Oral and Maxillofacial Surgery, Yenepoya Dental College, Yenepoya University, Deralakatte, Mangalore, Karnataka. Former student of Manipal College of Dental Sciences, Manipal University, Mangalore, Karnataka
| | - Akansha Anil
- Post graduate student, Dept. of Periodontics, College of Dental sciences, Davangere, Karnataka. Former student of Manipal College of Dental Sciences, Manipal University, Mangalore, Karnataka
| | - Manuel S Thomas
- Associate Professor, MDS, Dept. of Conservative Dentistry and Endododntics, Manipal College of Dental Sciences, Manipal University, Mangalore
| | - Kishore Ginjupalli
- MSc, PhD, Dept. of Dental Materials, Manipal College of Dental Sciences, Manipal University, Manipal
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Kiomarsi N, Salim S, Sarraf P, Javad-Kharazifard M, Chiniforush N. Evaluation of the Diode laser (810nm,980nm) on dentin tubule diameter following internal bleaching. J Clin Exp Dent 2016; 8:e241-5. [PMID: 27398172 PMCID: PMC4930631 DOI: 10.4317/jced.52666] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 03/02/2016] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND The aim of this study was to evaluate the effect of diode laser irradiation and bleaching materials on the dentinal tubule diameter after laser bleaching. MATERIAL AND METHODS The dentin discs of 40 extracted third molar were used in this experiment. Each disc surface was divided into two halves by grooving. Half of samples were laser bleached at different wavelengths with two different concentrations of hydrogen peroxide. Other half of each disc with no laser bleaching remained as a negative control. Dentin discs were assigned randomly into four groups (n=10) with following hydrogen peroxide and diode laser wavelength specifications; Group 1 (30% - 810 nm), group 2 (30% - 980 nm), group 3 (46% - 810 nm) and group 4 (46% - 980 nm). All specimens were sent for scanning electron microscopic (SEM) analysis in order to measure tubular diameter in laser treated and control halves. Data were analyzed by ANOVA and Tukey test (p<0.05). RESULTS A significant reduction in dentin tubule diameter was observed in groups 1, 2 and 4. There was no significant difference between groups 1 and 2 and between groups 3 and 4 after bleaching. CONCLUSIONS The SEM results showed that diode laser was able to reduce dentin tubule diameter and its effect on dentin was dependent on chemical action of bleaching material. KEY WORDS Laser, diode, dentin, tubule, diameter.
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Affiliation(s)
- Nazanin Kiomarsi
- Assistant professor. Department of Operative Dentistry, Dental faculty, Tehran University of Medical Sciences, International campus, Tehran, Iran
| | - Soheil Salim
- Doctor. Tehran University of Medical Sciences, International campus, Tehran, Iran
| | - Pegah Sarraf
- Assistant professor. Department of Endodontics, Dental faculty, Tehran University of Medical Sciences, International campus, Tehran, Iran
| | | | - Nasim Chiniforush
- PhD candidate. Laser Research Center of Dentistry (LRCD), Dental Research Institute, Tehran University of Medical Sciences, Tehran, Iran
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Patel MU, Punia SK, Bhat S, Singh G, Bhargava R, Goyal P, Oza S, Raiyani CM. An in vitro Evaluation of Microleakage of Posterior Teeth Restored with Amalgam, Composite and Zirconomer - A Stereomicroscopic Study. J Clin Diagn Res 2015; 9:ZC65-7. [PMID: 26393208 DOI: 10.7860/jcdr/2015/13024.6225] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 05/11/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Numerous restorative materials are being used in dentistry to achieve adequate strength and restore aesthetics. However, a perfect ideal restorative material has still eluded dentist. Dental amalgam is versatile material with self-sealing property, but is unaesthetic. Other restorative materials like, composites require conservative preparation, but exhibits polymerisation shrinkage resulting in microleakage. To overcome these drawbacks a high strength restorative material reinforced with ceramic and zirconia fillers known as zirconomer has been introduced. The aim of this study was to evaluate the micro-leakage of these three different restorative materials. MATERIALS AND METHODS Thirty non-carious human permanent first and second molars were utilized in this study. Class I cavities were prepared on the occlusal surface; cavities were then restored with amalgam, composite and zirconomer as per manufacture's instruction. All samples were stored for 24 hours in distilled water followed by thermocycling. The entire tooth surface was painted with two coats of varnish to within 1mm of the restoration margins. The teeth were immersed in dye. Teeth were sectioned and observed under stereomicroscope. RESULTS In this study the zirconomer exhibited the highest micro leakage as compared to composite and amalgam but composite having higher micro leakage as compared to amalgam and lower micro leakage as compared to zirconomer. CONCLUSION Even though composite and amalgam are being marketed aggressively and new material like zirconomer are on origin, amalgam still proves to be one of the best materials.
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Affiliation(s)
- Mayank U Patel
- Post Graduate Student, Department of Conservative Dentistry and Endodontics, Darshan Dental College , Udaipur, India
| | - Sandhya Kapoor Punia
- Reader, Department of Conservative Dentistry and Endodontics, Darshan Dental College , Udaipur, India
| | - Surekha Bhat
- Professor & H.O.D., Department of Conservative Dentistry and Endodontics, Darshan Dental College , Udaipur, India
| | - Gautam Singh
- Reader, Department of Conservative Dentistry and Endodontics, Darshan Dental College , Udaipur, India
| | - Rahul Bhargava
- Reader, Department of Conservative Dentistry and Endodontics, Darshan Dental College , Udaipur, India
| | - Pravesh Goyal
- Post Graduate Student, Department of Conservative Dentistry and Endodontics, Darshan Dental College , Udaipur, India
| | - Swapnil Oza
- Senior Lecturer, Department of Community and Preventive Dentistry, Darshan Dental College , Udaipur, India
| | - Chirag M Raiyani
- Post Graduate Student, Department of Pedodontics and Preventive Dentistry, Darshan Dental College , Udaipur, India
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