Colour assessment of bleaching effect on orthodontically treated teeth

Primer Autor
Koumpia, Effimia
Co-autores
Eliades, Theodore
Knoesel, Michael
Athanasiou, Athanasios E.
Título
Colour assessment of bleaching effect on orthodontically treated teeth
Editorial
OXFORD UNIV PRESS
Revista
EUROPEAN JOURNAL OF ORTHODONTICS
Lenguaje
en
Resumen
Aim To assess whether the efficacy of external tooth bleaching differs between untreated and orthodontically treated teeth. Materials and method Three groups of subjects were formed, group Debonded included 24 consecutive orthodontically treated patients evaluated immediately after removal of fixed appliances. The Retention group included 24 consecutive orthodontically treated patients in the phase of retention. The Untreated group consisted of 24 arbitrarily selected undergraduate dental students without history of fixed-appliances orthodontic therapy. Each of the above three groups was further randomized into two subgroups, Bleaching and Placebo. Each subgroup received either a 38% hydrogen peroxide bleaching treatment or a placebo agent, respectively. Tooth colour changes were assessed at seven timepoints: 1 day before intervention, on the day of intervention before and after treatment, and at 7, 14, 21, and 90 days for parameters L*, a*, b*, and Delta Epsilon in all upper incisors and canines with the use of a reflectance spectrophotometer. Intra-rater agreement was estimated with the Intra-class Correlation Coefficient and method's error was calculated using the Repeatability Coefficient. Regarding tooth colour changes, an analysis of variance was used to assess differences between groups. Results Bleaching was associated with an increase of the L* value and decrease of b* and a* values in both orthodontically treated and untreated teeth. Parameters Delta E, L*, and b* exhibited statistically significant differences between the Bleaching-Untreated and Bleaching-Retention subgroups. In the Bleaching subgroups, statistically significant differences were found between different teeth for all parameters. Conclusions Previous exposure to fixed orthodontic appliance influenced the efficacy of external tooth bleaching. The effect of bleaching was higher after orthodontic treatment and with longer period in retention. Canines changed in colour more than incisors, and the effect was reduced over time.
Tipo de Recurso
artículo original
doi
10.1093/ejo/cjac006
Formato Recurso
PDF
Palabras Claves
DIFFERENT DEBONDING TECHNIQUES
ENAMEL COLOR
TOOTH COLOR
CARBAMIDE PEROXIDE
CLEANUP PROCEDURES
IN-VITRO
DISCOLORATION
ADHESIVES
REMOVAL
SATISFACTION
Ubicación del archivo
http://dx.doi.org/10.1093/ejo/cjac006
Categoría OCDE
Odontología
Cirugía Bucal y Medicina
Materias
DIFERENTES TÉCNICAS DE DESPEGADO
COLOR DE ESMALTE
COLOR DE DIENTES
PERÓXIDO DE CARBAMIDA
PROCEDIMIENTOS DE LIMPIEZA
IN VITRO
DECOLORACIÓN
ADHESIVOS
ELIMINACIÓN
SATISFACCIÓN
Disciplinas de la OCDE
Odontología, Cirugía y Medicina Oral
Otros Temas de Medicina Clínica
Tecnología Médica
Versión del recurso (Recomendado-único)
version publicada
Tipo de ruta
dorada
verde
Access Rights
acceso abierto
Derechos de acceso
acceso abierto
Id de Web of Science
WOS:000768459800001
Título de la cita (Recomendado-único)
Colour assessment of bleaching effect on orthodontically treated teeth
Página de inicio (Recomendado-único)
537
Página final (Recomendado-único)
547
Identificador del recurso (Mandatado-único)
artículo original
Condición de la licencia (Recomendado-repetible)
0
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