Professional clinical bleaching with Pola Office: 6-month clinical results with spectrophotometric analysis

Minerva Stomatol. 2007 Apr;56(4):191-208.
[Article in English, Italian]


Aim: The aim of the study was to evaluate the efficacy of the professional bleaching treatment with Pola Office (SDI): the shade, chroma and value parameters of the anterior upper elements were analysed.

Methods: At the Prosthetic Unit of the Modena and Reggio Emilia University, 10 patients were selected. All patients underwent oral hygiene treatment and spectrophotometric analysis (Spectro-Shade) of the 6 front elements: the variables L (value), c (chroma), and h (shade) were examined in the cervical, mesial and incisal sections. Spectrophotometric analysis was repeated 6 months after initial bleaching. The patients were asked to report the degree of sensitivity after 3, 6, 12 and 24 h and after 3, 6, 7, and 10 days.

Results: The value (L) of the treated elements increases after bleaching, the chroma parameter (c) showed lower values than those prior to treatment (except for the first patient); this means a shift towards a lower degree of saturation. The course of the shade parameter is uniform and constant for all patients, with a shift towards yellow chroma values. Postoperative sensitivity was confined to the first 3 h after treatment, after which it showed a steady decrease over 24 h.

Conclusions: Esthetic results obtained using the Pola Office bleaching procedure were visibly significant; confirmed by colorimeter analysis. The harmony between chroma, shade and value remained 6 months after the bleaching treatment; the sensitivity is particularly high in the first hour, however after 24 h sensitivity is greatly reduced.

Publication types

  • Evaluation Study
  • Historical Article

MeSH terms

  • Color Perception
  • Colorimetry
  • Follow-Up Studies
  • History, 18th Century
  • History, 19th Century
  • History, 20th Century
  • History, 21st Century
  • History, Ancient
  • Humans
  • Hydrogen Peroxide / administration & dosage
  • Hydrogen Peroxide / therapeutic use*
  • Oxidants / administration & dosage
  • Oxidants / therapeutic use*
  • Spectrophotometry
  • Tooth Bleaching / history
  • Tooth Bleaching / methods*
  • Tooth Discoloration / psychology
  • Tooth Discoloration / therapy
  • Treatment Outcome


  • Oxidants
  • pola office
  • Hydrogen Peroxide