ABSTRACT
Wyman Chan talks to the BDJ about his mission to deliver pain-free whitening treatments and his views on the recent tooth-whitening legislation.
Subject(s)
Tooth Bleaching , History, 20th Century , History, 21st Century , Humans , Hydrogen Peroxide/administration & dosage , Hydrogen Peroxide/standards , Tooth Bleaching/adverse effects , Tooth Bleaching/history , Tooth Bleaching/methods , United KingdomABSTRACT
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.
Subject(s)
Hydrogen Peroxide/therapeutic use , Oxidants/therapeutic use , Tooth Bleaching/methods , 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 , Oxidants/administration & dosage , Spectrophotometry , Tooth Bleaching/history , Tooth Discoloration/psychology , Tooth Discoloration/therapy , Treatment OutcomeABSTRACT
En este tiempo en que la estética dental juega un papel importante, el blanqueamiento surge como una alternativa para alcanzar este objetivo. El presente estudio tuvo como objetivo comparar dos técnicas de blanqueamiento dental, la lámpara de luz térmica con peróxido de hidrógeno al 35 por ciento (PH) y la guarda noctura con peróxido de carbamida al 10 por ciento (PC), realizando un estudio in vivo, de diseño no experimental. A través de un muestreo por conveniencia se seleccionaron 20 pacientes voluntarios entre los 15 y 25 años de edad, periodontalmente sanos, y con pigmentaciones dentales extrínsecas. Como variables se tuvieron: independientes, los hábitos, la dieta del paciente y la coloración inicial del diente' y dependientes, la variación en el color y la sensibilidad dental, las cuales se midieron por medio de fotografías tomadas durante la prueba, con un evaluador ajeno a ésta, y realizando pruebas con frío, calor y aire, respectivamente. En el maxilar superior, se usó lámpara de luz térmica con PH en tres sesiones, cada 8 días, y en el inferior, PC en una guarda de acetato por 10 días. Se analizaron los resultados utilizando estadística descriptiva y no paramétrica. El PH ocasionó un cambio en la coloración de los dientes más evidente y rápido que el PC, y de igual forma generó más sensibilidad dental (p menor 0.05)
