Lasers in Medical Science

, Volume 27, Issue 2, pp 321–324 | Cite as

Porcelain conditioning with Nd:YAG and Er:YAG laser for bracket bonding in orthodontics

  • Maryam Poosti
  • Arezoo Jahanbin
  • Pirouzeh Mahdavi
  • Sara Mehrnoush
Original Article
First Online:
Received:
Accepted:

Abstract

In this study, shear bond strength (SBS) of metal orthodontic brackets to porcelain following conditioning by Er:YAG (erbium-doped yttrium aluminum garnet) and Nd:YAG (neodymium-doped yttrium aluminum garnet) laser in comparison to conventional methods was evaluated. One hundred glazed porcelain discs with an upper central shape were prepared and randomly assigned to five equal groups of 20. In the first group, samples were only deglazed and roughened by diamond burs. In the second group, after roughening and deglazing of porcelain samples, the samples were etched by 9.6% hydrofluoric acid for 4 min. Groups, 3, 4, and 5 were prepared by 0.8-W Nd:YAG laser, 2-W Er:YAG laser, 3-W Er:YAG laser for 10 s, respectively. Then, metal, mesh-based brackets were bonded to porcelain samples, and after being stored in distilled water for 24 h, debonding was carried out by a Zwick testing machine. ANOVA and Tukey tests were used to compare SBS in five groups. Mean SBS in groups 1 to 5 were 3.3 ± 1.6, 7.0 ± 2.1, 6.9 ± 2.7, 2.3 ± 1.1, and 3.7 ± 2.3 MPa, respectively. ANOVA test revealed a significant difference between five groups (p < 0.05). Although Tukey’s test showed SBS in groups 2 and 3 were significantly higher than the other groups, they did not differ with each other significantly (p > 0.05). The results revealed that SBS of 9.6% hydroflouric acid and Nd:YAG Laser was in an acceptable range for orthodontic treatment. Nd:YAG laser was shown to be an acceptable substitute for hydrofluoric acid while Er:YAG laser with the mentioned power and duration was not a suitable option.

Keywords

Porcelain bonding Er:YAG laser Nd:YAG laser Orthodontic brackets 
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Notes

Acknowledgments

We wish to acknowledge Dr. Arezoo Habibi for her assistance in the statistical analysis. This research was supported financially by the Vice Chancellor for Research of Mashhad University of Medical Sciences.(code 86583)

References

  1. 1.
    Nattrass C, Sandy JR (1995) Adult orthodontics. Br J Orthod 22:331–337PubMedGoogle Scholar
  2. 2.
    Zelos L, Bevis RR, Keenan KM (1994) Evaluation of the ceramic/ceramic interface. Am J Orthod Dentofacial Orthop 106:10–21PubMedCrossRefGoogle Scholar
  3. 3.
    Zachrisson YO, Zachrisson BU, Büyükyilmaz T (1996) Surface preparation for orthodontic bonding to porcelain. Am J Orthod Dentofacial Orthop 109:420–430PubMedCrossRefGoogle Scholar
  4. 4.
    Hayakawa T, Horie K, Aida M, Kanaya H, Kobayashi T, Murata Y (1992) The influence of surface conditions and silane agents on the bond strength of resin to dental porcelain. Dent Mater 8:238–240PubMedCrossRefGoogle Scholar
  5. 5.
    Gillis I, Redlich M (1998) The effect of different porcelain conditioning techniques on shear bond strength of stainless steel brackets. Am J Orthod Dentofacial Orthop 114:387–389PubMedCrossRefGoogle Scholar
  6. 6.
    Kimura Y, Wilder-Smith P, Matsumoto K (2000) Lasers in endodontics: a review. Int Endod J 33:173–185PubMedCrossRefGoogle Scholar
  7. 7.
    Von Fraunhofer JA, Allen DJ, Orbell GM (1993) Laser etching of enamel for direct bonding. Angle Orthod 63:73–76Google Scholar
  8. 8.
    Lee BS, Hsieh TT, Lee YL, Lan WH, Hsu YJ, Wen PH, Lin CP (2003) Bond strength of orthodontic bracket after acid-etched, Er:YAG laser-irradiated and combined treatment on enamel surface. Angle Orthod 73:565–570PubMedGoogle Scholar
  9. 9.
    Basaran G, Ozer T, Berk N, Hamamci O (2007) Etching enamel for orthodontics with an erbium, chromium:yttrium-scandium-gallium-garnet laser system. Angle Orthod 77:117–124PubMedCrossRefGoogle Scholar
  10. 10.
    Ariyaratnam MT, Wilson MA, Mackie IC, Blinkhorn AS (1997) A comparison of surface roughness and composite/enamel bond strength of human enamel following the application of the Nd:YAG laser and etching with phosphoric acid. Dent Mater 13:51–55PubMedCrossRefGoogle Scholar
  11. 11.
    Ariyaratnam MT, Wilson MA, Blinkhorn AS (1999) An analysis of surface roughness, surface morphology and composite/dentin bond strength of human dentiv following the application of the Nd:YAG laser. Dent Mater 15:222–228CrossRefGoogle Scholar
  12. 12.
    Cochran D, O'Keefe KL, Turner DT, Powers JM (1997) Bond strength of orthodontic composite cement to treated porcelain. Am J Orthod Dentofacial Orthop 111:297–300PubMedCrossRefGoogle Scholar
  13. 13.
    Kocadereli I, Canay S, Akça K (2001) Tensile bond strength of ceramic orthodontic brackets bonded to porcelain surfaces. Am J Orthod Dentofacial Orthop 119:617–620PubMedCrossRefGoogle Scholar
  14. 14.
    Li R, Ren Y, Han J (2000) Effects of pulsed Nd:YAG laser irradiation on shear bond strength of composite resin bonded to porcelain. Hua Xi Kou Qiang Yi Xue Za Zhi 18:377–379PubMedGoogle Scholar
  15. 15.
    Smith GA, McInnes-Ledoux P, Ledoux WR, Weinberg R (1988) Orthodontic bonding to porcelain-bond strength and refinishing. Am J Orthod Dentofacial Orthop 94:245–252PubMedCrossRefGoogle Scholar
  16. 16.
    Zachrisson YO, Zachrisson BU, Büyükyilmaz T (1996) Surface preparation for orthodontic bonding to porcelain. Am J Orthod Dentofacial Orthop 109:420–430PubMedCrossRefGoogle Scholar
  17. 17.
    Barbosa VL, Almeida MA, Chevitarese O, Keith O (1995) Direct bonding to porcelain. Am J Orthod Dentofacial Orthop 107:159–164PubMedCrossRefGoogle Scholar
  18. 18.
    Reynolds IR, von Fraunhofer JA (1976) Direct bonding of orthodontic brackets–a comparative study of adhesives. Br J Orthod 3:143–146PubMedGoogle Scholar
  19. 19.
    Kim JT, Cho SA (2009) The effects of laser etching on shear bond strength at the titanium ceramic interface. J Prosthet Dent 101:101–106PubMedCrossRefGoogle Scholar
  20. 20.
    Akova T, Yoldas O, Toroglu MS, Uysal H (2005) Porcelain surface treatment by laser for bracket–porcelain bonding. Am J Orthod Dentofacial Orthop 128(5):630–637PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd 2011

Authors and Affiliations

  • Maryam Poosti
    • 1
  • Arezoo Jahanbin
    • 1
  • Pirouzeh Mahdavi
    • 2
  • Sara Mehrnoush
    • 1
  1. 1.Department of Orthodontics, Dental SchoolMashhad University of Medical SciencesMashhadIran
  2. 2.Department of Oral and Maxillofacial Radiology, Dental SchoolMashhad University of Medical SciencesMashhadIran

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