The aim of this study was to evaluate a relatively new calcium silicate cement (Biodentine(R)) used as a dentine substitute. The marginal adaptation in Class II restorations have been studied; this is the spot, where gingival margins are situated apical to the cemento-enamel junction (CEJ). 20 Class II cavities have been prepared on mesial and distal surfaces of 10 extracted teeth, with margins extending 1 mm below the cementum-enamel junction. Cavities have been restored with composite resin and Biodentine(R) in an "open sandwich" technique. The assessment of the marginal adaptation was performed using Laser Scanning Confocal Microscopy. The considered interfaces have been evaluated and the differences between the different materials have been discussed. In conclusion, contemporary calcium silicate materials, such as Biodentine, can be used as substitute materials for the dentin. However, because Biodentine needs extensive time to set, the operating time is longer than when a Resin-Modified Glass-Ionomer (RMGI) is used.
Introduction. In numerous clinical situations it is not possible to have an exact clinical evaluation of the furcation
defects. Recently the use of CBCT in periodontology has led to an increased precision in diagnostic.
Aim. To determine the accuracy of CBCT as diagnostic tool of the furcation defects.
Material and method. 19 patients with generalised advanced chronic periodontitis were included in this study,
presenting a total of 25 lower molars with different degrees of furcation defects. Clinical and digital measurements (in
mm) were performed on all the molars involved. The data obtained has been compared and statistically analysed.
Results. The analysis of primary data has demonstrated that all the furcation grade II and III defects were revealed using
the CBCT technique. Regarding the incipient defects (grade I Hamp < 3mm), the dimensions measured on CBCT images
were slightly bigger. The results have shown that 84% of the defects detected by CBCT have been confirmed by clinical
measurements. These data are similar to those revealed by other studies1.
Conclusions. The use of CBCT technique in evaluation and diagnosis of human mandibular furcation defects can
provide many important information regarding the size and aspect of the interradicular defect, efficiently and noninvasively.
CBCT technique is used more effectively in detection of advanced furcation degree compared to incipient
ones. However, the CBCT examination cannot replace, at least in this stage of development, the clinical measurements,
especially the intraoperative ones, which are considered to represent the „golden standard” in this domain.
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