Download PDF
CC BY-NC-ND 4.0 · Eur J Dent 2013; 07(01): 230-235
DOI: 10.1055/s-0039-1700385
Original Article
Dental Investigation Society

Effects of Fluorosis and Bleaching on Shear Bond Strengths of Orthodontic Brackets

Necdet Adanira DDS, PhD
a   Department of Endodontics, Faculty of Dentistry, University of Suleyman Demirel.
,
Hakan Türkkahramanb DDS, PhD
b   Department of Orthodontics, Faculty of Dentistry, University of Suleyman Demirel.
,
Yalçın Ahmet Güngörc
b   Department of Orthodontics, Faculty of Dentistry, University of Suleyman Demirel.
› Author Affiliations
Further Information

Publication History

Publication Date:
30 September 2019 (online)

  PDF Download Permissions and Reprints

ABSTRACT

Objectives: To evaluate the effects of fluorosis and bleaching on shear bond strengths of orthodontic brackets.

Methods: A total of 45 (30 fluorosed and 15 non-fluorosed) non-carious freshly extracted human permanent premolar teeth which were extracted for orthodontic reasons and without any caries or visible defects were used in this study. Fluorosed teeth were selected according to the modified Thylstrup and Fejerskov index (TFI), which is based on the clinical changes in fluorosed teeth. First group consisted of 15 fluorosed teeth. Second group of fluorosed teeth were bleached with a 35% hydrogen peroxide office bleaching agent. Third group served as control. No bleaching procedure was applied. Orthodontic brackets were bonded with a light cure composite resin and cured with a halogen light. After bonding, shear bond strengths of the brackets were tested with Universal testing machine.

Results: The results showed that fluorosis only and bleaching of fluorosed teeth significantly reduced the bond strengths of the orthodontic brackets (P>.001). Although bleaching of fluorosed teeth decreased the values more, no statistically significant difference was found between fluorosis group and fluorosis+bleaching group (P<.05).

Conclusions: Fluorosis and bleaching of fluorosed teeth reduce bracket bond strength to enamel, but the bond strength with these still exceed the minimum 6 to 8 MPa required to expect adequate clinical performance. (Eur J Dent 2007;1:230-235)

Key words

Fluorosis - Bleaching - Shear bond strength - Hydrogen peroxide
 

  • References

  • 1 Hattab FN, Qudeimat MA, al-Rimawi HS. Dental discoloration: an overview.. J Esthet Dent 1999; 11: 291-310
    CrossrefPubMedGoogle Scholar
  • 2 Watts A, Addy M. Tooth discolouration and staining: a review of the literature.. Br Dent J 2001; 190: 309-315
    CrossrefPubMedGoogle Scholar
  • 3 Haywood VB, Berry TG. Natural tooth bleaching. In: Summitt JB, Rabbins JW, Schwartz RS, editors. Fundamentals of operative dentistry: a contemporary approach.. Chicago: Quintessence Publishing Co Inc 2001; 402 p
    Google Scholar
  • 4 Awliya WY, Akpata ES. Effect of fluorosis on shear bond strength of glass ionomer-based restorative materials to dentin.. J Prosthet Dent 1999; 81: 290-294
    CrossrefPubMedGoogle Scholar
  • 5 Ateyah N, Akpata ES. Factors affecting shear bond strength of composite resin to fluorosed human enamel.. Oper Dent 2000; 25: 216-222
    PubMedGoogle Scholar
  • 6 Ermis RB, Gokay N. Effect of fluorosis on dentine shear bond strength of a self-etching bonding system.. J Oral Rehabil 2003; 30: 1090-1094
    CrossrefPubMedGoogle Scholar
  • 7 Weerasinghe DS, Nikaido T, Wettasinghe KA, Abayakoon JB, Tagami J. Micro-shear bond strength and morphological analysis of a self-etching primer adhesive system to fluorosed enamel.. J Dent 2005; 33: 419-426
    CrossrefPubMedGoogle Scholar
  • 8 Ng’ang’a PM, Ogaard B, CruZ R, Chinidia ML. Aastrum E. Tensile bond strength of orthodontic brackets bonded directly to fluorotic and nonfluorotic teeth: an in vitro comparative study.. Am J Orthod Dentofacial Orthop 1992; 102: 244-229
    CrossrefPubMedGoogle Scholar
  • 9 Opinya GN, Pameijer CH. Tensile bond strength of fluorosed Kenyan teeth using the acid etch technique.. Int Dent J 1986; 36: 225-229
    PubMedGoogle Scholar
  • 10 Lynch CD, McConnell RJ. The use of microabrasion to remove discolored enamel: a clinical report.. J Prosthet Dent 2003; 90: 417-419
    CrossrefPubMedGoogle Scholar
  • 11 Deliperi S, Congiu MD, Bardwell DN. Integration of composite and ceramic restorations in tetracycline-bleached teeth: a case report.. J Esthet Restor Dent 2006; 18: 126-134
    CrossrefPubMedGoogle Scholar
  • 12 Bloom DR, Padayachy JN. Aesthetic changes with four anterior units.. Br Dent J 2006; 200: 135-138
    CrossrefPubMedGoogle Scholar
  • 13 Amato M, Scaravilli MS, Farella M, Riccitiello F. Bleaching teeth treated endodontically: long-term evaluation of a case series.. J Endod 2006; 32: 376-378
    CrossrefPubMedGoogle Scholar
  • 14 Oltu U, Turkun M, Gurgan S. Effects of three concentrations of carbamide peroxide on the structure of enamel.. J Oral Rehabil 2000; 27: 332-340
    CrossrefPubMedGoogle Scholar
  • 15 Shinohara MS, Peris AR, Pimenta LA, Ambrosano GM. Shear bond strength evaluation of composite resin on enamel and dentin after nonvital bleaching.. J Esthet Restor Dent 2005; 17: 022-029 discussion 29
    CrossrefPubMedGoogle Scholar
  • 16 Johnson RH. Lengthening clinical crowns.. J Am Dent Assoc 1990; 121: 473-476
    CrossrefPubMedGoogle Scholar
  • 17 Nour El-dinAK, Miller BH, Griggs JA, Wakefield C. Immediate bonding to bleached enamel.. Oper Dent 2006; 31: 106-114
    CrossrefPubMedGoogle Scholar
  • 18 Türkkahraman H, Adanir N, Güngör AY. Bleaching and desensitizer application effects on shear bond strengths of orthodontic brackets.. Angle Orthod 2007; 77: 489-493
    CrossrefPubMedGoogle Scholar
  • 19 Sung EC, Chan SM, Mito R, Caputo AA. Effect of carbamide peroxide bleaching on the shear bond strength of composite to dental bonding agent enhanced enamel.. J Prosthet Dent 1999; 82: 595-599
    CrossrefPubMedGoogle Scholar
  • 20 Uysal T, Basciftci FA, Usumez S, Sari Z, Buyukerkmen A. Can previously bleached teeth be bonded safely?. Am J Orthod Dentofacial Orthop 2003; 123: 628-632
    CrossrefPubMedGoogle Scholar
  • 21 Bishara SE, Oonsombat C, Soliman MM, Ajlouni R, Laffoon JF. The effect of tooth bleaching on the shear bond strength of orthodontic brackets.. Am J Orthod Dentofacial Orthop 2005; 128: 755-760
    CrossrefPubMedGoogle Scholar
  • 22 Fejerskov O, Larsen MJ, Richards A, Baelum V. Dental tissue effects of fluoride.. Adv Dent Res 1994; 8: 015-031
    CrossrefPubMedGoogle Scholar
  • 23 Olsen ME, Bishara SE, Damon P, Jakobsen JR. Evaluation of Scotchbond Multipurpose and maleic acid as alternative methods of bonding orthodontic brackets.. Am J Orthod Dentofacial Orthop 1997; 111: 498-501
    CrossrefPubMedGoogle Scholar
  • 24 Al-Sugair MH, Akpata ES. Effect of fluorosis on etching of human enamel.. J Oral Rehabil 1999; 26: 521-528
    CrossrefPubMedGoogle Scholar
  • 25 Titley KC, Torneck CD, Ruse ND, Krmec D. Adhesion of a resin composite to bleached and unbleached human enamel.. J Endod 1993; 19: 112-115
    CrossrefPubMedGoogle Scholar
  • 26 Dishman MV, Covey DA, Baughan LW. The effects of peroxide bleaching on composite to enamel bond strength.. Dent Mater 1994; 10: 033-036
    CrossrefPubMedGoogle Scholar
  • 27 Bishara SE, Sulieman AH, Olson M. Effect of enamel bleaching on the bonding strength of orthodontic brackets.. Am J Orthod Dentofacial Orthop 1993; 104: 444-447
    CrossrefPubMedGoogle Scholar
  • 28 Ruse ND, Smith DC, Torneck CD, Titley KC. Preliminary surface analysis of etched, bleached, and normal bovine enamel.. J Dent Res 1990; 60: 1610-1613
    Google Scholar
  • 29 Perdigao J, Francci C, Swift EJ, Ambrose WW, Lopes M. Ultra-morphological study of the interaction of dental adhesives with carbamide peroxide-bleached enamel.. Am J Dent 1998; 11: 291-301
    PubMedGoogle Scholar
  • 30 McGuckin RS, Thurmond BA, Osovitz S. Enamel shear bond strengths after vital bleaching.. Am J Dent 1992; 5: 216-222
    PubMedGoogle Scholar
  • 31 Rueggeberg FA, Margeson DH. The effect of oxygen inhibition on an unfilled/filled composite system.. J Dent Res 1990; 69: 1652-1658
    Google Scholar