Paul Wesselink

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OBJECTIVE We sought to measure and calculate the percentage of the gutta-percha-filled area in the apical root canal after the use of a standardized or inverted master cone in cold lateral compaction.Study design Two groups of extracted mandibular premolars with a single canal were instrumented with instruments of the same size; furthermore, they were(More)
AIM The technical quality of a root canal treatment is clinically judged by the apical extension and homogeneity of the filling material imaged by periapical radiographs (PA). The aim of this experiment was to evaluate the association between the technical quality of the root canal filling and treatment outcome. MATERIALS AND METHODS In 234 teeth (268(More)
AIM To compare fluid movement (FM) along the coronal two-thirds of gutta percha/sealer root fillings placed by three different techniques. METHODOLOGY Three groups consisting of the roots of mandibular incisors were instrumented and obturated by cold lateral compaction (LC), warm vertical compaction (VC) or the single-cone technique (SC), using RoekoSeal(More)
The seal provided by a full-length root canal filling may be compromised by post space preparation. Eighty human mandibular premolars each with a single canal were obturated with laterally condensed gutta-percha cones and a sealer. Immediate post space preparation was carried out on half the number of teeth and delayed post space preparation on the(More)
The aim of many endodontic studies is to compare two or more treatment methods, techniques or materials, for example, to detect differences in mean leakage scores. As it is not feasible to study large populations, samples are taken. The important question then arises as to how large the sample sizes have to be in order to establish the 'true' (=(More)
AIM To compare the percentage of filled canal area in mandibular molar roots after using conventional root-canal hand instrumentation or after a noninstrumentation technique (NIT). METHODOLOGY Forty mandibular molars were used shortly after extraction. The root canals of 20 molars in the manual group were conventionally prepared using hand instruments and(More)
OBJECTIVES The aim of the present study was to compare the sealing efficacy of root fillings made by a single-cone technique with three different sealers and a cold lateral compaction technique with an epoxy sealer. MATERIALS AND METHODS Eighty extracted single-rooted human teeth were assigned to four experimental groups: group 1, single-cone and epoxy(More)
AIM Virtual teeth with and without tooth pathology have been developed for use in a virtual learning environment in dental education. The objective of this study was to evaluate the appearance of these virtual teeth for use in dental education and to compare them with contemporary educational models, such as plastic teeth (Frasaco GmbH) and extracted human(More)
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