Clinical Oral Investigations

, Volume 23, Issue 1, pp 321–326 | Cite as

Dental bleaching on teeth submitted to enamel microabrasion 30 years ago—a case report of patients’ compliance during bleaching treatment

  • Daniel Sundfeld
  • Caio Cesar Pavani
  • Timm Cornelius Schott
  • Lucas Silveira Machado
  • Núbia Inocêncya Pavesi Pini
  • André Pinheiro de Magalhães Bertoz
  • Renato Herman SundfeldEmail author
Original Article



The present dental bleaching case report describes a new method that precisely quantifies the daily wearing-times of the bleaching product by inserting a microsensor in the acetate custom tray. The bleaching efficacy was also discussed since the patient was previously submitted to enamel microabrasion.


The patient was submitted to enamel microabrasion in 1987, and bleaching treatment was performed in 2005. In 2017, re-bleaching was executed using 10% peroxide carbamide. The electronic microsensor, TheraMon (TheraMon® microelectronic system; Sales Agency Gschladt, Hargelsberg, Austria), was embedded in the labial region of the upper and lower acetate trays to evaluate the wearing-times of the acetate trays/bleaching product. The patient was instructed to wear the tray for 6 to 8 h/day while sleeping. After 24 days of bleaching treatment, the data obtained from the TheraMon electronic devices was collected and interpreted.


The patient did not entirely follow the bleaching treatment as recommended, as there was no evidence of use of the upper and lower trays for some days; additionally, the bleaching product was used for shorter and longer periods than was instructed.


The TheraMon microeletronic device precisely measured the wearing-times of the acetate tray/bleaching product during the bleaching treatment. Teeth submitted to enamel microabrasion presented with a healthy clinical appearance after 30 years.

Clinical significance

Measuring the length and frequency of use of an acetate tray/bleaching product can be important to clinicians and patients for obtaining a controlled and adequate bleaching treatment.


Dental bleaching Enamel microabrasion TheraMon microsensor Wearing-times 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

Ethical approval was not necessary for this type of clinical case report.

Informed consent

For this type of study, formal consent is not required.

Submission declaration and verification

The results of the manuscript have not been published elsewhere. The publication was approved by all authors and will not be published in the same form anywhere else.


  1. 1.
    Croll TP, Cavanaugh RR (1986) Enamel color modification by controlled hydrochloric acid-pumice abrasion. I. Technique and examples. Quintessence Int 17(2):81–87Google Scholar
  2. 2.
    Sundfeld RH, Komatsu J, Russo M, Jr HC, Castro MAM, Quintella LPAS, Mauro SJ (1990) Removal of enamel stains: clinical and microscopic study. Rev Bras Odontol 47:29–34Google Scholar
  3. 3.
    Sundfeld RH, Mauro SJ, Komatsu J, Mestrener SR, Okida RC (1997) Smile recovery. A promising conquest in the esthetic dentistry. Rev Bras Odontol 54:321–325Google Scholar
  4. 4.
    Sundfeld RH, Croll TP, Briso AL, de Alexandre RS, Sundfeld Neto D (2007) Considerations about enamel microabrasion after 18 years. Am J Dent 20(2):67–72Google Scholar
  5. 5.
    Sundfeld RH, Franco LM, Gonçalves RS, de Alexandre RS, Machado LS, Neto DS (2014) Accomplishing esthetics using enamel microabrasion and bleaching—a case report. Oper Dent 39(3):223–227. CrossRefGoogle Scholar
  6. 6.
    Sundfeld RH, Sundfeld-Neto D, Machado LS, Franco LM, Fagundes TC, Briso AL (2014) Microabrasion in tooth enamel discoloration defects: three cases with long-term follow-ups. J Applied Oral Sci 22(4):347–354CrossRefGoogle Scholar
  7. 7.
    Sundfeld RH, Franco LM, Machado LS, Pini N, Salomao FM, Anchieta RB, Sundfeld D (2016) Treatment of enamel surfaces after bracket debonding: case reports and long-term follow-ups. Oper Dent 41(1):8–14. CrossRefGoogle Scholar
  8. 8.
    Haywood VB, Heymann HO (1991) Nigthguard vital bleaching: how safe is it? Quintessence Int 22(7):515–520Google Scholar
  9. 9.
    Schott TC, Göz G (2010) Applicative characteristics of new microelectronic sensors Smart Retainer® and TheraMon® for measuring wear time. J Orofac Orthop 71(5):339–347. CrossRefGoogle Scholar
  10. 10.
    Schott TC, Göz G (2011) Wearing times of orthodontic devices as measured by the TheraMon microsensor. J Orofac Orthop 72(2):103–110. CrossRefGoogle Scholar
  11. 11.
    Schott TC, Ludwig B, Glasl BA, Lisson JA (2011) A microsensor for monitoring removable-appliance wear. J Clin Orthod 45(9):518–520Google Scholar
  12. 12.
    Pauls A, Nienkemper M, Panayotidis A, Wilmes B, Drescher D (2013) Effects of wear time recording on the patient’s compliance. Angle Orthod 83(6):1002–1008. CrossRefGoogle Scholar
  13. 13.
    Schott TC, Ludwig B (2014) Microelectronic wear-time documentation of removable orthodontic devices detects heterogeneous wear behavior and individualizes treatment planning. Am J Orthod Dentofac Orthop 146(2):155–160. CrossRefGoogle Scholar
  14. 14.
    Schäfer K, Ludwig B, Meyer-Gutknecht H, Schott TC (2015) Quantifying patient adherence during active orthodontic treatment with removable appliances using microelectronic wear-time documentation. Eur J Orthod 37(1):73–80. CrossRefGoogle Scholar
  15. 15.
    Schott TC, Meyer-Gutknecht H, Mayer N, Weber J, Weimer K (2017) Comparison between indirect and objective wear-time assessment of removable orthodontic appliances. Eur J Orthod 39(2):170–175. CrossRefGoogle Scholar
  16. 16.
    Donly KJ, O’Neill M, Croll TP (1992) Enamel microabrasion: a microscopic evaluation of the “abrosion effect”. Quintessence Int 23(3):175–179Google Scholar
  17. 17.
    Vasiliadis L, Darling AI, Levers BG (1983) The histology of sclerotic human root dentine. Arch Oral Biol 28(8):693–700CrossRefGoogle Scholar
  18. 18.
    Cardoso PC, Reis A, Loguercio A, Vieira LC, Baratieri LN (2010) Clinical effectiveness and tooth sensitivity associated with different bleaching times for a 10 percent carbamide peroxide gel. J Am Dent Assoc 141(10):1213–1220CrossRefGoogle Scholar
  19. 19.
    Machado LS, Anchieta RB, dos Santos PH, Briso AL, Tovar N, Janal MN, Coelho PG, Sundfeld RH (2016) Clinical comparison of at home and in-office dental bleaching procedures: a randomized trial of a split-mouth design. Int J Periodontics Restor Dent 36(2):251–260. CrossRefGoogle Scholar
  20. 20.
    Leonard RH Jr, Haywood VB, Phillips C (1997) Risk factors for developing tooth sensitivity and gingival irritation associated with nightguard vital bleaching. Quintessence Int 28(8):527–534Google Scholar
  21. 21.
    Matis BA (2000) Degradation of gel in tray whitening. Compend Contin Educ Dent 28:S28–S35Google Scholar
  22. 22.
    Matis BA, Gaiao U, Blackman D, Schultz FA, Eckert GJ (1999) In vivo degradation of bleaching gel used in whitening teeth. J Am Dent Assoc 130(2):227–235CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Daniel Sundfeld
    • 1
  • Caio Cesar Pavani
    • 2
  • Timm Cornelius Schott
    • 3
  • Lucas Silveira Machado
    • 4
  • Núbia Inocêncya Pavesi Pini
    • 1
  • André Pinheiro de Magalhães Bertoz
    • 5
  • Renato Herman Sundfeld
    • 2
    Email author
  1. 1.Department of Restorative Dentistry and ProsthodonticsIngá University Center - UNINGÁMaringáBrazil
  2. 2.Department of Restorative Dentistry, Araçatuba Dental SchoolSão Paulo State University - UNESPAraçatubaBrazil
  3. 3.Department of Orthodontics and Orofacial OrthopedicsEberhard Karls UniversityTübingenGermany
  4. 4.Department of Conservative Dentistry, School of DentistryFederal University of Rio Grande do Sul - UFRGSPorto AlegreBrazil
  5. 5.Department of Pediatrics and Social Dentistry, Araçatuba Dental SchoolSão Paulo State University - UNESPAraçatubaBrazil

Personalised recommendations