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VOLUME 21 , ISSUE 11 ( November, 2020 ) > List of Articles


Bond Integrity of Resin-modified Glass Ionomer to Dentin Conditioned Using Photodynamic Therapy and Low-level Laser Therapy: An In Vitro Study

Mohammed S Bin-Shuwaish, Abdullah S AlJamhan

Citation Information : Bin-Shuwaish MS, AlJamhan AS. Bond Integrity of Resin-modified Glass Ionomer to Dentin Conditioned Using Photodynamic Therapy and Low-level Laser Therapy: An In Vitro Study. J Contemp Dent Pract 2020; 21 (11):1229-1232.

DOI: 10.5005/jp-journals-10024-2948

License: CC BY-NC 4.0

Published Online: 01-04-2021

Copyright Statement:  Copyright © 2020; The Author(s).


Aim: The aim of the study was to assess the conditioning efficacy of photodynamic therapy (PDT) and Er,Cr:YSGG laser (ECYL) to dentin compared with conventional regime bonded to resin-modified glass ionomer (RMGIC). Materials and methods: Forty mandibular teeth were cleaned, disinfected, and mounted vertically within the segments of polyvinyl pipes up to cementoenamel junction. The occlusal surfaces were flattened, and samples were divided into four groups according to conditioning protocols. Samples in groups I and II underwent PDT, samples in group III were conditioned with low-level laser therapy (LLLT) using Er,Cr:YSGG laser (ECYL), and samples in group IV were conditioned using polyacrylic acid (PAA). Fuji II LC was applied incrementally and light cured for 20 seconds. All samples were placed in universal testing machine for shear bond strength (SBS) testing. The fracture surface was analyzed using stereomicroscope at 50× magnification to determine mode of failure. Among different investigational groups Tukey test was used as post hoc along with analysis of variance (ANOVA). Significance level was established at p <0.05. Results: Maximum SBS values were observed in group IV dentin conditioned with PAA (19.55 ± 1.84 MPa), whereas minimum SBS values were shown by group I (methylene blue photosensitizer, MBP) activated by PDT (13.52 ± 1.22 MPa). In group III, dentin conditioned with ECYL (18.22 ± 2.07 MPa) and group IV (19.55 ± 1.84 MPa) surface treated with PAA exhibited comparable SBS values (p > 0.05). Fracture analysis revealed that in PDT group adhesive failure type was in majority. However, admixed failure type was commonly presented in groups III and IV. Conclusion: PDT of dentin using photosensitizers MBP and CP deteriorates bond values when bonded to RMGIC. The use of LLLT to condition dentin has the potential to improve SBS. Clinical significance: Dentin conditioning with LLLT using ECYL may improve, is of utmost importance for better treatment outcome, predictable prognosis, and improved bond integrity to RMGIC.

  1. Bonding of contemporary glass ionomer cements to dentin. Dent Mater 2001;17(5):456–470. DOI: 10.1016/S0109-5641(01)00007-0.
  2. Limitations in bonding to dentin and experimental strategies to prevent bond degradation. J Dent Res 2011;90(8):953–968. DOI: 10.1177/0022034510391799.
  3. Bond strength of resin modified glass ionomer cement to primary dentin after cutting with different bur types and dentin conditioning. J Appl Oral Sci 2007;15(5):459–464. DOI: 10.1590/s1678-77572007000500016.
  4. Effect of dentin conditioning on dentin permeability and micro-shear bond strength. Eur J Oral Sci 2007;115(6):502–509. DOI: 10.1111/j.1600-0722.2007.00483.x.
  5. Effects of dentin surface treatments on shear bond strength of glass-ionomer cements. Ann Stomatol (Roma) 2014;5(1):15–22. Accessed June 9, 2019.
  6. Evaluating dentin surface treatments for resin-modified glass ionomer restorative materials. Oper Dent 2012;38(4):429–438. DOI: 10.2341/12-162-l.
  7. Evaluation of Microtensile bond strength of glass ionomer cements to dentin after conditioning with the Er,Cr:YSGG laser. Photomed Laser Surg 2007;25(5):402–406. DOI: 10.1089/pho.2006.2074.
  8. Evaluating the effect of different conditioning agents on the shear bond strength of resin-modified glass ionomers. Contemp Clin Dent 2017;8(4):604. DOI: 10.4103/ccd.ccd_631_17.
  9. The effect of dentine pre-treatment using bioglass and/or polyacrylic acid on the interfacial characteristics of resin-modified glass ionomer cements. J Dent 2018;73:32–39. DOI: 10.1016/j.jdent.2018.03.014.
  10. Er. Cr:YSGG laser dentine conditioning improves adhesion of a glass ionomer cement. Photomed Laser Surg 2013;31(9):453–460. DOI: 10.1089/pho.2013.3546.
  11. Photodynamic therapy and activations of irrigation (using different laser prototypes) on push out bond strength of fiber posts. Photodiagnosis Photodyn Ther 2020;30:101716. DOI: 10.1016/j.pdpdt.2020.101716.
  12. Treatment of caries affected dentin with different photosensitizers and its adhesive bond integrity to resin composite. Photodiagnosis Photodyn Ther 2020;31:101865. DOI: 10.1016/j.pdpdt.2020.101865.
  13. Efficacy of chlorhexidine, Er Cr YSGG laser and photodynamic therapy on the adhesive bond integrity of caries affected dentin. An in-vitro study. Photodiagnosis Photodyn Ther 2020;31:101875. DOI: 10.1016/j.pdpdt.2020.101875.
  14. Does photodynamic therapy with methylene blue affect the mechanical properties and bond strength of glass-fiber posts in different thirds of intraradicular dentin? Photodiagnosis Photodyn Ther 2020;30:101673. DOI: 10.1016/j.pdpdt.2020.101673.
  15. Adhesive bond integrity of dentin conditioned by photobiomodulation and bonded to bioactive restorative material. Photodiagnosis Photodyn Ther 2019;28:110–113. DOI: 10.1016/j.pdpdt.2019.08.014.
  16. Influence of photobio-modulation with an Er,Cr: YSGG laser on dentin adhesion bonded with bioactive and resin-modified glass ionomer cement. J Appl Biomater Funct Mater 2019;17(4):2280800019880691 10.1177/2280800019880691.
  17. Effect of Er,Cr:YSGG laser and ascorbic acid on the bond strength and microleakage of bleached enamel surface. Photomed Laser Surg 2018;36(8):431–438. DOI: 10.1089/pho.2018.4437.
  18. Influence of Er,Cr:YSGG laser dentin conditioning on the bond strength of bioactive and conventional bulk-fill dental restorative material. Photobiomodulation, Photomedicine, Laser Surg 2020;38(1):30–35. DOI: 10.1089/photob.2019.4661.
  19. Dentin bond strength of bioactive cement in comparison to conventional resin cement when photosensitized with Er,Cr:YSGG laser. Pakistan J Med Sci 2020;36(2):85–90. DOI: 10.12669/pjms.36.2.1284.
  20. Validity of bond strength tests: a critical review-part II. J Conserv Dent 2014;17(5):420. DOI: 10.4103/0972-0707.139823.
  21. Validity of bond strength tests: a critical review: part I. J Conserv Dent 2014;17(4):305–311. DOI: 10.4103/0972-0707.136340.
  22. Dentin conditioning using different laser prototypes (Er,Cr:YSGG; Er:YAG) on bond assessment of resinmodified glass ionomer cement. J Contemp Dent Pract 2020;21(4):426–430. DOI: 10.5005/jp-journals-10024-2807.
  23. Effect of photodynamic therapy on the mechanical properties and bond strength of glass-fiber posts to endodontically treated intraradicular dentin. J Prosthet Dent 2018;120(2):317.e1–317.e7. DOI: 10.1016/j.prosdent.2018.05.009.
  24. Influence of curcumin photosensitizer in photodynamic therapy on the mechanical properties and push-out bond strength of glass-fiber posts to intraradicular dentin. Photodiagnosis Photodyn Ther 2019;25:376–381. DOI: 10.1016/j.pdpdt.2019.01.025.
  25. Effect of Er,Cr:YSGG laser parameters on shear bond strength and microstructure of dentine. Photomed Laser Surg 2009;27(3):481–486. DOI: 10.1089/pho.2008.2282.
  26. Effect of surface conditioning on adhesion of glass ionomer cement to Er,Cr:YSGG laser-irradiated human dentin. Photomed Laser Surg 2007;25(2):118–123. DOI: 10.1089/pho.2006.2004.
  27. Microshear bond strength of bioactive restorative materials to dentin. Int J Dent Sci Res 2018;6(4):90–94. DOI: 10.12691/IJDSR-6-4-3.
  28. Efficacy of phototherapy with different conventional surface treatments on adhesive quality of lithium disilicate ceramics. Photodiagnosis Photodyn Ther 2019;25:292–295. DOI: 10.1016/j.pdpdt.2019.01.015.
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