Fotografía en Odontología / Photography in dentistry

The dental picture can constitute a very valuable tool for students, professors as well as for the dentists in general. For example it is good for the illustration of a discovery or a series of observations, documentation of the conditions of "before and later" of a treatment, contribution to the teaching to take registrations and as an assistant in the transmission of knowledge, campaigns in schools or social centers and even as legal protection, because a series of good pictures serves like evidence of the patient's conditions before, during and after the dental treatment. The purpose of the following article is to motivate and to guide to the dentist for the obtaining of dental pictures of quality helping to the selection of the required tools as well as of transmitting him some photographic advice to get the required good results.

Recuperación del color original de los dientes tratados endodónticamente: "blanqueamiento" / Recovery of the original color of endodontically treated teeth: bleaching

El blanqueamiento de dientes no vitales se reporta en la literatura desde el año 1800. Se han utilizado diferentes sustancias que van desde la composición netamente ácida de los agentes blanqueadores, como el ácido oxálico, hasta las sustancias oxigenantes que se utilizan en la actualidad. Por otro lado, las diferentes técnicas que se han desarrollado, han mostrado resultados satisfactorios en la mayoría de los casos, en el momento inmediato. Sólo hasta ahora se están empezando a reportar casos de reabsorción cervical externa post-blanqueamiento, incluso hasta los siete años después de haber sido realizado el procedimiento. Con el presente artículo, se pretende revisar la evolución histórica del blanqueamiento en dientes no vitales, referente a las sustancias utilizadas; diferentes técnicas usadas y lo que es más importante, los riesgos que se pueden presentar a largo plazo en una técnica agresiva y no por esto poco usada.

Bleaching of non-vital teeth is reportin the literature since the year 1800. Diferent substances have been used going from net acid composition of bleanching agents like Oxalic acid, to oxigenated liquids used today. By other pand, diferent technique developed, have shown satisfactory results in the majority of cases in the inmediate moment. Only until today, cases of external cervical resorption after bleanching are begining to be reported including after seven years at the procedure had been perfomed. The purpose of the present article is to review the historical evolution of the nonvital teeth bleaching, diferent substances, technics and the long term risks that could appear with a agresive technic, but not by this seldom used today.