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1.
Acta odontol. venez ; 47(2): 474-480, jun. 2009. ilus, tab
Article in Spanish | LILACS | ID: lil-630183

ABSTRACT

La caries secundaria también denominada caries recurrente constituye una de las razones principales de reemplazo de las restauraciones. Es una lesión de caries que se localiza adyacente a una restauración, y puede originarse como una lesión externa y /o lesión de pared. El diagnóstico clínico, esta basado en la presencia de pigmentación y brecha marginal, ambos signos no son criterios absolutos para el diagnóstico de caries secundaria. En la siguiente revisión se exponen estudios recientes de la asociación entre caries secundaria con los siguientes aspectos: brecha marginal, pigmentación marginal, dentina afectada y material restaurador.


The secondary or recurrent caries is one of the main reasons for replacement of restorations. The lesion secondary caries occurs at the margin of an existing restoration, and consist of two parts, an outer lesion and/or a wall lesion. The clinical diagnosis, is based on the presence of staining and ditching marginal, both signs are not absolute criteria for the diagnosis of secondary caries. The next literature review presents recent studies of the association between secondary caries to the following: marginal ditching, marginal staining, affected dentin and restorative material.

2.
Braz. dent. j ; 20(4): 307-313, 2009. tab
Article in English | LILACS | ID: lil-536320

ABSTRACT

This study determined the validity of marginal ditching and staining as criteria for the diagnosis of secondary caries around amalgam restorations. One hundred and twenty-four Class I amalgam restorations on extracted human teeth were submitted to standardized clinical examinations. A calibrated examiner recorded the presence of ditching in the tooth/restoration interface, the occurrence of bluish-grey staining on the occlusal surface, and their relationship with the presence and severity of secondary carious lesions. Examinations were repeated after 4 days to calculate the intra-examiner reliability. Stereomicroscopic inspection of the serial tooth sections was used as the gold-standard. Six teeth were lost during the study. Of the 118 remaining teeth, 19 (16 percent) showed occlusal bluish-grey staining and 26 showed more than 0.20 mm wide marginal ditches. Of the latter, 14 presented narrow ditches (0.20-0.45 mm), while 12 presented wide ditches (0.45 mm). The evaluation criteria presented low sensitivity and positive predictive values. Positive and negative likelihood ratios showed that the criteria exhibited, indistinctly, the same odds to determine a positive or negative result for a diseased or healthy tooth. It was concluded that marginal ditching and staining were not valid criteria for the diagnosis of secondary caries around occlusal amalgam restorations.


Este estudo determinou a validade de fendas marginais e manchamentos oclusais como critérios para o diagnóstico de cárie adjacente a restaurações de amálgama. Cento e vinte e quatro dentes humanos extraídos, restaurados com amálgama Classe I, foram submetidos a exame clínico em condições padronizadas. Um examinador treinado registrou a presença de fendas na interface dente/restauração, a ocorrência de manchamento cinza-azulado na superfície oclusal e sua relação com a presença e severidade de lesões secundárias de cárie. Os exames foram repetidos após 4 dias para cálculo da confiabilidade intraexaminador. A inspeção de cortes seriados ao estereomicroscópio foi utilizada como padrão-ouro. Seis dentes foram perdidos durante o estudo. Dos 118 restantes, 19 (16 por cento) apresentaram manchamento oclusal cinza/azulado e 26 apresentavam fendas marginais com largura superior a 0,20 mm, sendo que destes 14 tinham fendas estreitas e 12 fendas amplas. Os critérios de avaliação apresentaram valores de sensibilidade e preditivo positivo extremamente baixos, enquanto a razão de verossimilhança positiva e a razão de verossimilhança negativa evidenciaram que os critérios apresentaram a mesma chance de determinar um resultado positivo ou negativo para um dente doente ou hígido, indistintamente. Pode ser concluído que fendas/valamentos e manchamentos oclusais não se mostraram como critérios válidos para determinar presença de cárie adjacente a restaurações de amálgama.


Subject(s)
Humans , Dental Restoration Failure , Dental Amalgam/therapeutic use , Dental Caries Activity Tests/methods , Dental Caries/complications , Dental Leakage/complications , Tooth Discoloration/etiology , Dental Marginal Adaptation , Dental Caries/diagnosis , Dental Caries/therapy , Dental Leakage/diagnosis , Dental Restoration, Permanent/methods , Observer Variation , Odds Ratio , Recurrence
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