title: Professional clinical bleaching with Pola Office: 6-month clinical results with spectrophotometric analysis.
abstract: OBJECTIVE
  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.
authors: Section of Dentistry, Department of Neurosciences, University of Modena and Reggio Emilia, Modena, Italy. franchiirene@virgilio.it
authors: I
authors: I
authors: Franchi
authors: A
authors: A
authors: Lolli
authors: R
authors: R
authors: Bianchi
authors: S
authors: S
authors: Bortolini
authors: U
authors: U
authors: Consolo
mesh_terms: D003118:Color Perception; D003124:Colorimetry; D005500:Follow-Up Studies; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D049690:History, Ancient; D006801:Humans; D006861:Hydrogen Peroxide / Q000008:administration & dosage / Q000627:therapeutic use*; D016877:Oxidants / Q000008:administration & dosage / Q000627:therapeutic use*; D013053:Spectrophotometry; D014073:Tooth Bleaching / Q000266:history / Q000379:methods*; D014075:Tooth Discoloration / Q000523:psychology / Q000628:therapy; D016896:Treatment Outcome
chemical_list: D016877:Oxidants; C523699:pola office; D006861:Hydrogen Peroxide