title: Duration and timing of sensitivity related to bleaching.
abstract: OBJECTIVE
  Reports of sensitivity vary greatly from one study to another, probably because studies are small. Generally, only the percentage of subjects is reported.
  
  
  OBJECTIVE
  This study reports sensitivity using a large database. We investigated the source, duration, and timing of sensitivity during 14 days of active bleaching.
  
  
  METHODS
  One hundred and seventy-two people recorded sensitivity from any of the five sources on a daily basis.
  
  
  RESULTS
  No one withdrew from the study because of sensitivity. Forty-seven percent of participants experienced sensitivity. Seventy-seven percent had sensitivity of 3 or fewer days. Temperature sensitivity tended to occur later in the 14-day bleaching cycle, and hot and cold sensitivity tended to occur together.
  
  
  CONCLUSIONS
  There was great variability in sensitivity levels from person to person. Temperature sensitivity tended to occur later in the active phase of bleaching, whereas irritation of the tongue tended to occur earlier.
  
  
  CONCLUSIONS
  The results from a large group of people are more likely to include a wide cross-section of the population sampled. This data provides practitioners with a better estimate of what their patients are likely to experience. It is estimated that, during 2 weeks of active bleaching, 77% of people will experience 3 or fewer days of sensitivity. On average, sensitivity is short-lived, thus making it is easy to underestimate the importance of discussing sensitivity with patients considering bleaching. However, for some, the duration of sensitivity is much greater and has a very negative impact on satisfaction.
authors: Department of Oral Rehabilitation, School of Dentistry, Medical College of Georgia, Augusta, GA, USA. wbrownin@mail.mcg.edu
authors: William D
authors: WD
authors: Browning
authors: John S
authors: JS
authors: Blalock
authors: Kevin B
authors: KB
authors: Frazier
authors: Mary C
authors: MC
authors: Downey
authors: Michael L
authors: ML
authors: Myers
mesh_terms: D000287:Administration, Topical; D000704:Analysis of Variance; D000077463:Carbamide Peroxide; D003430:Cross-Sectional Studies; D003742:Dental Devices, Home Care; D003807:Dentin Sensitivity / Q000139:chemically induced* / Q000517:prevention & control; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004338:Drug Combinations; D005460:Fluorides, Topical / Q000008:administration & dosage; D005881:Gingiva / Q000187:drug effects*; D006801:Humans; D009566:Nitrates / Q000008:administration & dosage; D010545:Peroxides / Q000008:administration & dosage / Q000009:adverse effects; D010614:Pharynx / Q000187:drug effects; D017680:Potassium Compounds / Q000008:administration & dosage; D015203:Reproducibility of Results; D012969:Sodium Fluoride / Q000008:administration & dosage; D013997:Time Factors; D014059:Tongue / Q000187:drug effects; D014073:Tooth Bleaching / Q000009:adverse effects* / Q000379:methods; D014075:Tooth Discoloration / Q000628:therapy*; D014508:Urea / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives
chemical_list: D004338:Drug Combinations; D005460:Fluorides, Topical; D009566:Nitrates; D010545:Peroxides; D017680:Potassium Compounds; D000077463:Carbamide Peroxide; D014508:Urea; D012969:Sodium Fluoride; C023844:potassium nitrate