Effects of various root canal sealers on tooth discoloration and internal bleaching / 대한치과재료학회지

There are several causes of tooth discoloration following root canal treatment. In this study, we evaluated the effects of sealers on tooth discoloration and internal bleaching. Twenty-four teeth were divided into 4 groups: control group, AH plus, Endosequece BC, and MTA fillapex group. Root canal filling was performed using each sealer conventionally and non-vital bleaching was performed with sodium perborate. The L, a, and b values were measured using Vita easyshade. Tooth discoloration after root canal treatment occurs irrespective of the type of sealers and may cause discoloration with only gutta-percha cone. The effect of non-vital bleaching following the use of calcium silicate-based sealers such as Endosequece BC and MTA fillapex was higher than that of AH plus. Therefore, it needs careful use of sealers in endodontics and calcium silicate-based sealers have advantages of bleaching in case of discolored tooth.

Blanqueamiento interno: Reporte de caso / Non-vital bleaching: Case report

La discromia de un diente es una alteración que varía en etiología, localización y severidad. Esta puede estar relacionada a causas extrínsecas, intrínsecas o una combinación de ambos. Una manera de tratar estas piezas no vitales, es el blanqueamiento interno, el cual se presenta como una alternativa conservadora frente a otros procedimientos como restauraciones con resina, carillas o coronas cerámicas, ya que preserva al máximo la estructura dentaria. El objetivo de este trabajo es presentar un reporte de caso de una paciente con discromia de la pieza 21 y cómo fue tratada con blanqueamiento interno, además hacer una revisión de la literatura actual presentando la etiología de las alteraciones de color en dientes no vitales, las alternativas de tratamiento, así como los agentes disponibles para este fin. Las técnicas para realizar el blanqueamiento de una pieza no vital son: la técnica en consultorio o In-office bleaching, las técnicas ambulatorias (Walking bleach e inside/outside bleaching) y por último la técnica mixta. Asimismo existen agentes blanqueadores disponibles en diferentes concentraciones para realizar dichas técnicas, cuya efectividad será revisada en este trabajo. Existen diversos factores que afectarán la eficacia del blanqueamiento interno, como la edad del paciente, tiempo de oscurecimiento, el grado y origen de la discromia, que podrían afectar el resultado final y la longevidad del tratamiento.

Tooth discoloration varies in etiology, location and severity. It may be extrinsic, intrinsic or a combination of both. A treatment option in such cases is non-vital bleaching, which presents itself as a conservative alternative to other procedures like composite restorations, veneers or ceramic crowns, as it preserves the most of tooth structure. The aim of this paper is to report a clinical case of a patient with non vital tooth discoloration and how it was successfully treated with internal bleaching procedures; also to review the current literature discussing the etiology of discoloration in non-vital teeth, treatment options and agents available. Non-vital bleaching techniques include: In-office bleaching, walking bleach, inside/outside bleaching and finally, the combined technique. Bleaching agents are available in different concentrations for these techniques, whose effectiveness is discussed in this paper. There are several factors that could affect the effectiveness of non-vital bleaching, such as patient age, time, degree and etiology of discoloration. All of these can influence the final result and treatment longevity.

A survey among Palestinian dentists regarding preferences over vital and non-vital teeth bleaching: a cross-sectional study.

ABSTRACT Background: With bleaching treatments becoming very popular, assessment was conducted among Palestinian dentists to check their preferences. Objective: To evaluate the preferences of general dentists regarding vital and non-vital tooth bleaching therapies and to investigate whether the time of clinical practice influences these options. Material & methods: A cross-sectional study was conducted among 200 Palestinian dentists. Options regarding bleaching therapies including the first choice of material, technique and clinical practice for vital and non-vital tooth bleaching therapies were included in the 20 item questionnaire. Data were submitted to descriptive analysis and the associations were evaluated using chi-square test (p<0.05) Results: The response rate was 56.7%. In-office therapy (50.9%) was the preferred treatment of choice for the dentists, followed by a combination of in-office and at-home therapies (29.8%); At home therapies were the least preferred (19.3%). Hydrogen peroxide more than 22% was the preferred treatment of choice for vital bleaching therapy (57.9%), whereas the combination of sodium perborate with water or hydrogen peroxide (46.5%) was the preferred treatment of choice for non-vital bleaching. There was a significant association between the time since graduation and the preference for in-office bleaching (P=0.01) and no significant association between the time since graduation and the material used. Conclusion: In-office bleaching was preferred over at-home therapies; HP >22% and sodium perborate with water or HP were chosen as first treatment options to manage discolored vital and non-vital teeth, respectively. The time in clinical practice had an effect only on the choice of vital bleaching technique.