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DOI: 10.1055/s-0039-1698344
Effects of Fluorosis and Bleaching on Shear Bond Strengths of Orthodontic Brackets
Publication History
Publication Date:
15 October 2019 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00042133/200704/lookinside/thumbnails/10-1055-s-0039-1698344_00230-1.jpg)
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)
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References
- 1 Hattab FN, Qudeimat MA, al-Rimawi HS. Dental discoloration: an overview.. J Esthet Dent 1999; 11: 291-310
- 2 Watts A, Addy M. Tooth discolouration and staining: a review of the literature.. Br Dent J 2001; 190: 309-315
- 3 Haywood VB, Berry TG. Natural tooth bleaching. In: editors. Fundamentals of operative dentistry: a contemporary approach Summitt JB, Rabbins JW, Schwartz RS, Chicago: Quintessence Publishing Co Inc; 2001: 402 p
- 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
- 5 Ateyah N, Akpata ES. Factors affecting shear bond strength of composite resin to fluorosed human enamel.. Oper Dent 2000; 25: 216-222
- 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
- 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
- 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
- 9 Opinya GN, Pameijer CH. Tensile bond strength of fluorosed Kenyan teeth using the acid etch technique.. Int Dent J 1986; 36: 225-229
- 10 Lynch CD, McConnell RJ. The use of microabrasion to remove discolored enamel: a clinical report.. J Prosthet Dent 2003; 90: 417-419
- 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
- 12 Bloom DR, Padayachy JN. Aesthetic changes with four anterior units.. Br Dent J 2006; 200: 135-138
- 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
- 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
- 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
- 16 Johnson RH. Lengthening clinical crowns.. J Am Dent Assoc 1990; 121: 473-476
- 17 Nour El-dinAK, Miller BH, Griggs JA, Wakefield C. Immediate bonding to bleached enamel.. Oper Dent 2006; 31: 106-114
- 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
- 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
- 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
- 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
- 22 Fejerskov O, Larsen MJ, Richards A, Baelum V. Dental tissue effects of fluoride.. Adv Dent Res 1994; 8: 015-031
- 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
- 24 Al-Sugair MH, Akpata ES. Effect of fluorosis on etching of human enamel.. J Oral Rehabil 1999; 26: 521-528
- 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
- 26 Dishman MV, Covey DA, Baughan LW. The effects of peroxide bleaching on composite to enamel bond strength.. Dent Mater 1994; 10: 033-036
- 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
- 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
- 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
- 30 McGuckin RS, Thurmond BA, Osovitz S. Enamel shear bond strengths after vital bleaching.. Am J Dent 1992; 5: 216-222
- 31 Rueggeberg FA, Margeson DH. The effect of oxygen inhibition on an unfilled/filled composite system.. J Dent Res 1990; 69: 1652-1658