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Safety and Stability of Nightguard Vital Bleaching: 9 to 12 Years Post‐treatment
Author(s) -
RITTER ANDRÉ V.,
LEONARD RALPH H.,
GEORGES ANNIE J. ST.,
CAPLAN DANIEL J.,
HAYWOOD VAN B.
Publication year - 2002
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/j.1708-8240.2002.tb00523.x
Subject(s) - dentistry , carbamide peroxide , medicine , vitality , enamel paint , orthodontics , philosophy , theology
Purpose: The purposes of this retrospective case series study were to evaluate safety issues and determine participants' perceptions of a nightguard vital bleaching (NGVB) technique approximately 10 years post‐treatment (average, 118 mo; range, 108–144 mo). Materials and Methods: The study sample included 30 (79%) of 38 participants who had completed a previous NGVB study using a 10% carbamide peroxide solution (Proxigel® or Gly‐Oxide®) in a custom tray for 6 weeks. Participants were asked whether there had been any change in the shade of their teeth post‐treatment and, if so, to quantify the change on a verbal scale. In addition, 19 participants had gingival index and tooth vitality evaluated clinically, external cervical root anatomy evaluated radiographically, and enamel surface changes evaluated microscopically. Results: Thirty‐five (92%) of the original 38 participants had successful lightening of their teeth. At approximately 10 years post‐treatment (average, 118 mo; range, 108–144 mo), external cervical resorption was not diagnosed and gingival index and tooth vitality findings were considered within the normal expectations for the sample studied, suggesting minimal clinical post‐NGVB side effects at approximately 10 years. Scanning electron microscopic observations did not reveal substantial differences between treated and nontreated surfaces. Color stability, as perceived by 43% of the participants, may last approximately 10 years (average, 118 mo; range, 108–144 mo) post‐treatment.