Chan, W., Lynch, Edward, Dr. and Grootveld, Martin. (2012) Tooth-whitening activity of a novel home-bleaching system utilising thermal diffusion : a multifactorial simultaneous evaluation of efficacy at cervical, body and incisal tooth sites. BDJ, Vol.212 (No.4). E8. ISSN 0007-0610

Text WRAP_Lynch_WChan_bdj_Publication25_02_2012.pdf - Accepted Version Restricted to Repository staff only until 18 August 2012. Download (334Kb)

Abstract

Introduction The ability of a thermal diffusion system (TDS) to promote the tooth-whitening actions of a bleaching gel/bleaching activator combination product (containing a final hydrogen peroxide (H2O2) content of 10.0% (w/v)) towards discoloured 'smile-zone' teeth was examined. Methods Fifty teeth in 15 participants aged 18-62 years were investigated. The CIE tooth shade parameters L*, a* and b*, together with Vitapan shade scores (VSSs), were simultaneously recorded at three separate tooth areas (cervical, body and incisal sites) with a novel spectrophotometric monitoring system before treatment, and also at 14 days after completion of a 10-day treatment period in which the product was applied 'at-home' (twice daily). Results The tooth-whitening treatment administered gave rise to extremely significant increases in L*, and decreases in the a* and b* shade parameters for each of the tooth areas investigated (p <10−10). Post-treatment mean decreases in the VSS values were 8.26, 9.70 and 9.14 for the cervical, body and incisal areas respectively (p <10−8 in each case). Mean ΔE values determined post-treatment were also very highly significant for each tooth region examined (p <10−10 in each case). Conclusions The tooth-whitening system tested exerted extremely powerful bleaching actions in all tooth areas investigated. The order of tooth-whitening effectiveness was body > incisal > cervical for Δb* and ΔE, and incisal > body > cervical for Δa* and ΔL*, and this may reflect the TDS's ability to promote the penetration of H2O2 to intrinsic stain sites.

Item Type:	Journal Article
Subjects:	R Medicine > RK Dentistry
Divisions:	Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH):	Teeth -- Bleaching -- Methodology
Journal or Publication Title:	BDJ
Publisher:	Nature Publishing Group
ISSN:	0007-0610
Date:	February 2012
Volume:	Vol.212
Number:	No.4
Page Range:	E8
Identification Number:	10.1038/sj.bdj.2012.144
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
References:	Haywood V B, Heymann H O. Nightguard vital bleaching. Quintessence Int 1989; 20: 173–176. | PubMed | Christensen G J. In vivo assays for presence of gel in trays. CRA News 1989; 13: 2–3. Gerlach R W, Zhou X. Vital bleaching with whitening strips: summary of clinical research on effectiveness and tolerability. J Contemp Dent Prac 2001 2: 1–16. | CAS | Cronin M J, Charles C A, Zhao Q, Dembling W Z. Comparison of two over-the-counter tooth whitening products using a novel system. Compend Contin Educ Dent 2005; 26: 140, 142, 144–148. | PubMed | Haywood V B, Leonard R H, Dickinson G L. Efficacy of six months of nightguard vital bleaching of tetracycline-stained teeth. J Esthet Dent 1997; 9: 13–19. | Article | PubMed | CAS | Matis B A, Mousa H N, Cochran M A, Eckert G J. Clinical evaluation of bleaching agents of different concentrations. Quintessence Int 2000; 31: 303–310. | PubMed | CAS | Joiner A, Thakker G. In vitro evaluation of a novel 6% hydrogen peroxide tooth whitening product. J Dent 2004; 32: 19–25. | Article | PubMed | Lynch E, Sheerin A, Silwood C J, Grootveld M. Multicomponent evaluations of the oxidising actions and status of a peroxoborate-containing tooth-whitening system in whole human saliva using high resolution proton NMR spectroscopy. J Inorg Biochem 1999; 73: 65–84. | Article | PubMed | Mokhlis G R, Matis B A, Cochran M A, Eckert G J. A clinical evaluation of carbamide peroxide and hydrogen peroxide whitening agents during daytime use. J Am Dent Assoc 2000; 131: 1269–1277. | PubMed | McEvoy S A. Chemical agents for removing intrinsic stains from vital teeth. I. Technique development. Quintessence Int 1989; 20: 323–328. | PubMed | Chiesara E, Dayan A D, Duschner H, Maier H, White D J. The safety of tooth whitening. Blackwell Munksgaard, 2002. Bowles W H, Ugwuneri Z. Pulp chamber penetration by hydrogen peroxide following vital bleaching procedures. J Endod 1987; 13: 375–377. | Article | PubMed | Cooper J S, Bokmeyer T J, Bowles W H. Penetration of the pulp chamber by carbamide peroxide bleaching agents. J Endod 1992; 18: 315–317. | Article | PubMed | McCaslin A J, Haywood V B, Potter B J, Dickinson J L, Russell C M. Assessing dentin colour changes from nightguard vital bleaching. J Am Dent Assoc 1999; 130: 1485–1490. | PubMed | ISI | CAS | Westland S, Luo W, Ellwood R, Brunton P, Pretty I. Colour assessment in dentistry. Ann BVMA 2007; 4: 1–10. Joiner A, Hopkinson I, Deng Y, Westland S. A review of tooth colour and whiteness. J Dent 2008; 36: S2–S7. | Article | PubMed | Joiner A, Philpotts C J, Alonso C, Ashcroft A T, Sygrove N J. A novel optical approach to achieving tooth whitening. J Dent 2008; 36: S8–S14. | Article | PubMed | Chen L, Tan J G, Zhou J F, Yang X, Du Y, Wang F P. Reliability and accuracy of Crystaleye spectrophotometric system. Chin J Dent Res 2010; 13: 139–145. | PubMed | Sun P, Pan J, Tian Y et al. Tooth whitening with hydrogen peroxide assisted by a direct-current cold atmospheric-pressure air plasma microjet. IEEE Trans Plas Sci 2010; 38: 1892–1896. | Article | Sulieman M, Addy M, Rees J S. Surface and intra-pulpal temperature rises during tooth bleaching: an in vitro study. Br Dent J 2005; 199: 37–40. | Article | PubMed | ISI | CAS | Paul S J, Peter A, Rodoni L, Pietrobon N. Conventional visual vs spectrophotometric shade taking for porcelain-fused-to-metal crowns: a clinical comparison. Int J Periodontics Restorative Dent 2004; 24: 222–231. | PubMed | Okubo S R, Kanawati A, Richards M W, Childress S. Evaluation of visual and instrument shade matching. J Prosthet Dent 1998; 80: 642–648. | Article | PubMed | ISI | CAS | Da Silva J D, Park S E, Weber H P, Ishikawa-Nagai S. Clinical performance of a newly developed spectrophotometric system on tooth colour reproduction. J Prosthet Dent 2008; 99: 361–368. | Article | PubMed | ISI | Judd D B, Wyszecki G. Colour in business, science and industry. 3rd ed. New York: Wiley, 1979. Sulieman M, Addy M, MacDonald E, Rees J S. The effect of hydrogen peroxide concentration on the outcome of tooth whitening: an in vitro study. J Dent 2004; 32: 295–299. | Article | PubMed | CAS | Leonard R H, Sharma A, Haywood V B. Use of different concentrations of carbamide peroxide for bleaching teeth: an in vitro study. Quintessence Int 1998; 29: 503–507. | PubMed | CAS | Institute for Materials Research and Innovation (IMRI), University of Bolton, Deane Road, Bolton, BL3 5AB Warwick Dentistry, Warwick Medical School, University of Warwick, Warwick, CV4 7AL Correspondence to: M. Grootveld1 e-mail: mg6@bolton.ac.uk; Tel: 0120 490 3502 MORE ARTICLES LIKE THIS These links to content published by NPG are automatically generated. Summary of: Tooth-whitening activity of a novel home-bleaching systemutilising thermal diffusion: a multifactorial simultaneous evaluation of efficacy at cervical, body and incisal tooth sites BDJ (24 Feb 2012) Summary of: An in vitro comparison of tooth whitening techniques on natural tooth colour BDJ (10 May 2008) Kinetic modeling of in vivo—nuclear magnetic resonance spectroscopy data: 5–Fluorouracil in liver and liver tumors Clinical Pharmacology and Therapeutics (01 May 1991) An in vitro comparison of tooth whitening techniques on natural tooth colour BDJ (11 Apr 2008) Effect of chewing gum on tooth sensitivity following whitening BDJ (28 May 2010)
URI:	http://wrap.warwick.ac.uk/id/eprint/43606

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item