Apical leakage in maxillary type IV premolars with three different endodontic treatments.

The aim of this study was to evaluate the sealing ability in orthogradely filled, apicoectomised and retrogradely filled maxillary premolars with two canals and two separate apical foramina. The root canals of 51 extracted maxillary premolars of type IV were uniformly shaped and filled by means of lateral condensation and subsequently randomly divided into three groups of 17 teeth each. The teeth of groups II and III received an apicoectomy.

Intra-articular ganglion arising from the meniscofemoral ligament of Humphrey.

We present a case of an intra-articular ganglion of the knee arising from the anterior meniscofemoral ligament of Humphrey. The MR imaging and arthroscopic appearance of the lesion are illustrated.

[Apical thickness of root fillings in upper premolars. A comparison of orthograde-filled, apicoectomized and retrograde-filled teeth].

The objective of this study was to compare the apical leakage in root canal filled, apicectomised and retrogradely filled maxillary single rooted premolars with two canals of type II configuration. For this purpose the root canals of 51 maxillary type II premolars were shaped to size ISO #55, followed by a step-back preparation to size ISO #80. Subsequently, all teeth were obturated by means of lateral condensation and randomly divided into three groups, 17 teeth each.