Seiten: 193-198, Sprache: EnglischPais, Andressa Salles Gonçalves / Alves, Vanessa de Oliveira / De Martin, Alexandre Sigrist / Cunha, Rodrigo Sanches / Fontana, Carlos Eduardo / Bueno, Carlos Eduardo da Silveira
The aim of this study was to ascertain whether applying a 1% sodium fluorescein (SF) solution to the pulp chamber floor of human molars, together with a cobalt blue filter coupled to a dental operating microscope (DOM), could improve the location of root canals, compared to detection with the naked eye or with the DOM alone.
Methods: Forty maxillary first molars were studied. The pulp chambers of the teeth were sequentially inspected by three endodontists in three different ways: (i) without use of a DOM and with only standard dental light for illumination; (ii) with use of a DOM (12.5×); and (iii) by application of 1% SF and canal location using a cobalt blue filter coupled to a DOM. The interclass correlation coefficient was used to assess interexaminer agreement. Kendall's W test, complemented by Wilcoxon's signed rank test, (P < 0.05) was used to conduct the statistical analysis.
Results: A good level of agreement among examiners was found (interclass correlation coefficient ICC: 0.87 to 0.89). The mean number of canals located in the third inspection was 3.93, a significantly greater number than that observed in the first and second inspections, i.e. 3.68 and 3.70, respectively.
Conclusions: A 1% SF solution used in conjunction with a cobalt blue filter coupled to an operating microscope enabled the location of a greater number of canals in maxillary first molars.
Schlagwörter: dental pulp cavity, fluorescein, fluorescence, microscopy, molar