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Correlation between patient satisfaction and color changes after tooth bleaching.

Neng-Wu Jiang1,2, Yi-Ling Cheng1,3, Huo-Lian Huang4

  • 1Department of Prosthodontics, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.

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|February 2, 2024
PubMed
Summary
This summary is machine-generated.

Patient satisfaction with tooth bleaching is linked to color changes. A minimum color change value (ΔE₀₀) of 4.90 is needed for satisfactory results, with greater changes required for canines than incisors.

Keywords:
clinical trialcolor differencesin-office bleachinglogistic regression analysispatient satisfaction

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Area of Science:

  • Dentistry
  • Aesthetic Dentistry
  • Dental Materials

Background:

  • Tooth bleaching is a common cosmetic dental procedure.
  • Patient satisfaction is a key outcome measure in aesthetic dentistry.
  • Understanding the relationship between objective color change and subjective satisfaction is crucial.

Purpose of the Study:

  • To investigate the correlation between objective tooth color changes and patient satisfaction following in-office bleaching.
  • To determine the specific color change parameters (ΔL*, Δb*, ΔE₀₀) that influence patient perception of successful tooth whitening.

Main Methods:

  • A clinical trial involving 63 volunteers undergoing a 40% hydrogen peroxide in-office bleaching procedure.
  • Objective tooth color (L*, a*, b*) was measured at multiple time points using spectrophotometry.
  • Color difference (ΔE₀₀) was calculated, and patient satisfaction was recorded using a 0-3 scale.

Main Results:

  • Significant correlations were found between ΔL*, Δb*, ΔE₀₀, and patient satisfaction (p < 0.05).
  • Δb* (change in blue-yellow axis) had a greater impact on satisfaction than ΔL* (change in lightness).
  • A minimum ΔE₀₀ of 4.90 was suggested for satisfactory outcomes, with higher values needed for canines (6.8) than incisors (3.9-5.0).

Conclusions:

  • Objective tooth color changes, particularly Δb* and ΔE₀₀, are significantly associated with patient satisfaction after bleaching.
  • Specific ΔE₀₀ thresholds are required for satisfactory aesthetic outcomes, varying by tooth type.
  • Dentists should consider these objective color change metrics to manage patient expectations and ensure successful bleaching results.