Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 8 de 8
Filtrar
Mais filtros










Intervalo de ano de publicação
1.
J Clin Exp Dent ; 11(8): e754-e758, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31598205

RESUMO

Background: The aim of this study was to verify that there will be greater whitening in teeth treated with combined bleaching than in those that have been applied a clinical one and to evaluate the efficiency of the clinical treatment, those cases in which it is not able, or it is not wanted, to carry out the home phase. Material and Methods: They were used 66 extracted anterior human teeth, which were divided into two study groups. On the one hand, the clinical group (ClG) consisted of 33 teeth, which were treated with a clinical guideline using 37.5% hydrogen peroxide in a single session of 4 applications of 8 minutes. On the other hand, the combinate group (CoG) consisted of 33 teeth, which were treated with a combined guideline, applying first a clinical treatment as in the ClG and, at home treatment with carbamide peroxide at 16% for 22 days, 90 minutes a day. The colour of the tooth was measured before and after each treatment and was made through an individualized whitening splint with a spectrophotometer. Results: The 66 teeth were bleached, showing an increase in luminosity, a drecrease in yellow and a shift towards the green colours, where b (yellow-blue axis) was the only variable with a statistically significant change (p<0.001). The CoG obtained a significantly higher absolute value (p<0.001) than the ClG, being 12.99 for the first one and 19.70 for the second one. Conclusions: Combined therapy bleached more than clinical one, but both techniques were effective. In addition, it is affirmed that the clinical could be an alternative in those cases in which it is not able, or it is not wanted, to carry out the home phase. Key words:Carbamide peroxide, CIELab, combined guidelines, dental bleaching, hydrogen peroxide.

2.
J Clin Exp Dent ; 11(1): e15-e20, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30697389

RESUMO

Background: To evaluate color changes to composite resins used to restore extracted teeth compared with composite discs after whitening with two agents: hydrogen peroxide (HP) and carbamide peroxide (CP). Material and Methods: Ten human molars with class V vestibular and palatine cavity preparation obturated with Vita hybrid nanocomposite were hemisected to obtain 20 specimens assigned randomly to two groups: O1 and O2. Twenty composite discs were divided into two groups: D1 and D2. The groups O1 and D1 were treated with 16% CP, while groups =2 and D2 were treated with 37.5 % HP. Chromaticity coordinates L*, a* and b* were registered using a spectrophotometer. Results: Statistically significant differences were found in O1 for L* and a*, in O2 for all three coordinates, and in D1 and D2 only for L*. Comparisons between groups found significant differences in ΔEe (end of treatment) between O1 and O2, between O2 and D2, and between D1 and O1. Conclusions: Both whitening agents produced significant decreases in the three-color components of composites used for dental restorations, while color changes to composite discs were limited to changes in luminosity. HP produced a greater color change to composite dental restorations than to composite discs. Key words:In vitro study, whitening agents, hydrogen peroxide, and carbamide peroxide, dental restorations.

3.
Med Oral Patol Oral Cir Bucal ; 12(5): E404-7, 2007 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-17767109

RESUMO

OBJECTIVES: Bleaching of vital teeth performed at home by the patient under the dentist's supervision, using low-concentration peroxides and custom-fitted trays specifically designed for this purpose, is one of several options for this type of dental treatment, whether alone or in combination with another in-office bleaching technique. The objective of this study is to analyse the effect on the enamel surface of two bleaching products recommended for this technique. MATERIALS & METHODS: Two bleaching products were used: VivaStyle (Vivadent), a 10% carbamide peroxide, and FKD (Kin), a 3.5% hydrogen peroxide. They were applied in trays to the anterior teeth of 20 patients (10 in each group). The application times were 2 and 3 hours a day respectively for 28-33 days. Replicas of the tooth surfaces before and after treatment were obtained. These were observed with a scanning electron microscope. RESULTS: The images obtained showed that the tooth surfaces remained entire and the enamel surface structures remained normal. CONCLUSIONS: The results show that neither of the products affects the enamel surface: no post-operatory changes were observed.


Assuntos
Esmalte Dentário/efeitos dos fármacos , Peróxido de Hidrogênio/administração & dosagem , Oxidantes/administração & dosagem , Peróxidos/administração & dosagem , Clareamento Dental , Ureia/análogos & derivados , Peróxido de Carbamida , Combinação de Medicamentos , Humanos , Ureia/administração & dosagem
4.
Med. oral patol. oral cir. bucal (Internet) ; 12(5): E404-E407, sept. 2007. ilus
Artigo em Inglês | IBECS | ID: ibc-056876

RESUMO

Objectives: Bleaching of vital teeth performed at home by the patient under the dentist’s supervision, using low-concentration peroxides and custom-fitted trays specifically designed for this purpose, is one of several options for this type of dental treatment, whether alone or in combination with another in-office bleaching technique. The objective of this study is to analyse the effect on the enamel surface of two bleaching products recommended for this technique. Materials & methods: Two bleaching products were used: VivaStyle (Vivadent), a 10% carbamide peroxide, and FKD (Kin), a 3.5% hydrogen peroxide. They were applied in trays to the anterior teeth of 20 patients (10 in each group). The application times were 2 and 3 hours a day respectively for 28-33 days. Replicas of the tooth surfaces before and after treatment were obtained. These were observed with a scanning electron microscope. Results: The images obtained showed that the tooth surfaces remained entire and the enamel surface structures remained normal. Conclusions: The results show that neither of the products affects the enamel surface: no post-operatory changes were observed


Objetivos: El blanqueamiento de los dientes vitales que realiza el/la paciente en su domicilio bajo la supervisión del/de la dentista con férulas individualizadas especialmente diseñadas para ello y peróxidos de baja concentración, es una opción de entre las que integran esta terapéutica odontológica, ya sea, como tratamiento único o combinada con otra modalidad de blanqueamiento en la consulta. El objetivo del presente trabajo es analizar el efecto que producen sobre la superficie del esmalte dos productos blanqueadores indicados para esta técnica. Diseño del estudio: Se emplearon dos productos blanqueadores, el VivaStyle (Vivadent), peróxido de carbamida al 10%, y el FKD (Kin), peróxido de hidrógeno al 3,5%, que se aplicaron mediante férulas sobre los dientes anteriores de 20 pacientes (10 en cada grupo). El tiempo de aplicación de cada producto fue de 2 y 3 horas al día respectivamente durante 28-33 días. Se obtuvieron réplicas de las superficies dentales antes y después del tratamiento, las cuales fueron observadas con un microscopio electrónico de barrido. Resultados: Las imágenes obtenidas muestran la integridad de la superficie dental, con el mantenimiento de las estructuras normales de la superficie del esmalte. Conclusiones: Los resultados obtenidos muestran que ninguno de los dos productos alteran la superficie del esmalte, no observándose, pues, cambios postoperatorios


Assuntos
Humanos , Clareamento Dental/métodos , Peróxidos/farmacocinética , Microscopia Eletrônica de Varredura , Esmalte Dentário
5.
Med Oral Patol Oral Cir Bucal ; 11(1): E94-9, 2006 Jan 01.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-16388304

RESUMO

Tray bleaching of vital teeth performed at home by the patient under the dentist s supervision, whether alone or in combination with any of the in-office techniques, provides an interesting alternative to other methods employed in this type of dental treatment. This bleaching procedure applies low-concentration peroxides to the enamel by means of a custom-made mouth tray specifically designed for this purpose. The aim of this study is to examine and compare two commercially-available bleaching products, at equivalent concentrations, for use in this technique: VivaStyle (Vivadent) and FKD (Kin); the former is a 10% carbamide peroxide and the latter a 3.5% hydrogen peroxide formulation. It examines the parameters that must be monitored during the application of this type of procedure and presents 6 cases (3 treated with one of the above-mentioned products and the other 3 with the other), establishing the bleaching power of the products and the appearance and intensity of post-operatory hypersensitivity. The results obtained show that both products are effective for the purpose for which they were designed. In general, dental hypersensitivity was minimal.


Assuntos
Dispositivos para o Cuidado Bucal Domiciliar , Peróxido de Hidrogênio/uso terapêutico , Oxidantes/uso terapêutico , Peróxidos/uso terapêutico , Clareamento Dental/métodos , Ureia/análogos & derivados , Peróxido de Carbamida , Sensibilidade da Dentina/induzido quimicamente , Combinação de Medicamentos , Humanos , Clareamento Dental/efeitos adversos , Clareamento Dental/instrumentação , Descoloração de Dente/tratamento farmacológico , Ureia/uso terapêutico
6.
Med. oral patol. oral cir. bucal (Internet) ; 11(1): 94-99, ene. 2006. ilus
Artigo em Espanhol | IBECS | ID: ibc-042638

RESUMO

El blanqueamiento de los dientes vitales que realiza el/la paciente domiciliariamente con férulas bajo supervisión del/de la dentista es una alternativa interesante entre las que integran este tipo de terapéutica odontológica, ya sea, de forma aislada o combinada con alguna de las modalidades de tratamiento en la consulta. En este procedimiento blanqueador se usan peróxidos de baja concentración que se aplican sobre el esmalte dentario mediante una cubeta individualizada especialmente diseñada para ello. El objetivo del presente trabajo es analizar y comparar dos productos blanqueadores comerciales de diferente concentraciónindicados para esta técnica, VivaStyle (Vivadent) y FKD (Kin); el primero de ellos es un peróxido de carbamida al 10%, mientras que el segundo es un peróxido de hidrógeno al 3,5%. Se analizan los parámetros que deben ser controlados durante la puesta en práctica de este tipo de procedimiento y se presentan 6 casos (3 de ellos tratados con uno de los productosmencionados y los otros 3 con el otro) en los que se constata su capacidad blanqueadora y la aparición y la intensidad de hipersensibilidad postoperatoria. Los resultados obtenidos muestran que ambos productos son eficaces para la función para la que han sido desarrollados. En general, la hipersensibilidad dentaria es mínima


Tray bleaching of vital teeth performed at home by the patient under the dentist’s supervision, whether alone or in combinationwith any of the in-office techniques, provides an interesting alternative to other methods employed in this type of dental treatment. This bleaching procedure applies low-concentration peroxides to the enamel by means of a custom-made mouth tray specifically designed for this purpose. The aim of this study is to examine and compare two commercially-available bleaching products, at equivalent concentrations, for use in this technique: VivaStyle (Vivadent) and FKD (Kin); the former is a 10% carbamide peroxide and the latter a 3.5% hydrogen peroxide formulation. It examines the parameters that must be monitored during the application of this type of procedure and presents 6 cases (3 treated with one of the above-mentioned products and the other 3 with the other), establishing the bleaching power of the products and the appearance and intensity of post-operatory hypersensitivity. The results obtained show that both products are effective for the purpose for which they were designed. In general, dental hypersensitivity was minimal


Assuntos
Humanos , Dispositivos para o Cuidado Bucal Domiciliar , Peróxido de Hidrogênio/uso terapêutico , Oxidantes/uso terapêutico , Peróxidos/uso terapêutico , Clareamento Dental/métodos , Ureia/análogos & derivados , Sensibilidade da Dentina/induzido quimicamente , Combinação de Medicamentos , Clareamento Dental/efeitos adversos , Clareamento Dental/instrumentação , Descoloração de Dente/tratamento farmacológico , Ureia/uso terapêutico
7.
RCOE, Rev. Ilustre Cons. Gen. Col. Odontól. Estomatól. Esp ; 10(3): 263-267, mayo-jun. 2005. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-69912

RESUMO

Introducción: La medición del color dental de la forma más objetiva y reproducible posible, es uno de los problemas en Odontología. La reciente aparición de colorímetros especialmente concebidos para la toma del color dental pueden ser de ayuda para este fin. Objetivo: Evaluar la fiabilidad en la reproducción de las mediciones del color de tres colorímetros, diseñados para la toma del color dental. Material y método: Se midió el color tres veces sucesivas a cada uno los doce dientes anteriores de diez pacientes y se tomó cinco veces el color de cada uno de los dieciséis dientes de tres guías Vitapan Classical. Resultados: La reproducibilidad para la medición de las guías varió entre 72,25 y 93,7% según el colorímetro utilizado, mientras que en los pacientes osciló entre 81,94 y 95%. Conclusiones: El colorímetro Easyshade mostró la máxima reproducibilidad in vivo e in vitro, tanto de forma global como para cada uno de los tonos de la guía estudiada


Introduction: The objetive and reproducible measurement of dental colour, is a problem in Dentistry. Dental colorimeters, which have recently appeared in the market, can be helpful in this context. Objetive: We attempt to evaluate the reliability of three dental colorimeters in colour measurements. Material and Method: We measured dental colour in each of the twelve anterior teeth from ten patients, three times per tooth with each of the dental colorimeters and we registered five times the colour of each of the sixteen artificial teeth from three shade guides (Vitapan Classical). Results: Reliability in measuring shade guides colour ranged from 72.25 to 93.7%, depending on which colorimeter was used, while in patients it varied from 81.94 to 95%. Conclusions: The Easyshade colorimeter showed the highest degree of reliability in general and for each shade from the different guides, both in vivo and in vitro


Assuntos
Humanos , Clareamento Dental/métodos , Colorimetria , Estética Dentária , Equipamentos Odontológicos/tendências
8.
Med. oral ; 7(3): 192-199, mayo 2002. ilus
Artigo em Inglês | IBECS | ID: ibc-19603

RESUMO

La reabsorción radicular externa (RRE) es un proceso fisiológico en la dentición temporal, y muy frecuente en la dentición permanente; se relaciona con fuerzas oclusales inadecuadas, patología periodontal, microtraumatismos, etc. Frecuentemente se producen reabsorciones radiculares queno pueden atribuirse a ninguna causa, etiquetándose de idiopáticas (RREI). Estudios epidemiológicos expresan que tan sólo el 5 por ciento de las RRE pueden ser atribuidas a alguna causa específica. Presentamos tres casos de RREI con diferente grado de afectación que coexiste con una hipercalciuria leve y antecedentes de nefrolitiasis. La hipercalciuria normocalcémica es idiopática en la mayoría de los casos y tiene un carácter familiar, siendo su prevalencia de entre el 20 y el 40/1.000 en adultos. Existe una forma de hipercalciuria asociada a nefrolitiasis relacionada con una mutación del gen CLCN5, que cursa con proteinuria de bajo peso molecular, aunque dicha mutación no ha podido encontrarse de forma uniforme en la mayoría de los casos de hipercalciuria idiopática. La peculiaridad de los casos que presentamos es la coexistencia de la RREI con hipercalciuria normocalcémica y nefrolitiasis, lo que debe de orientarnos a profundizar en la posible asociación de estas tres situaciones clínicas (AU)


Assuntos
Adulto , Feminino , Humanos , Reabsorção da Raiz/diagnóstico , Osteoclastos/microbiologia , Osteoclastos/patologia , Radiografia Panorâmica/métodos , Osteomalacia/complicações , Osteomalacia/diagnóstico , Reabsorção da Raiz/fisiopatologia , Reabsorção da Raiz , Acidose Tubular Renal/complicações , Acidose Tubular Renal/diagnóstico
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA