Medium- and Long-Term Re-Treatment of Root Canals Filled with a Calcium Silicate-Based Sealer: An Experimental Ex Vivo Study.

This study investigated the possibility of re-treating a calcium silicate-based sealer (CSBS), compared to an epoxy-resin sealer (RBS), using rotary instrumentation at different times from obturation (1 month/1 year). Thirty-six human mandibular premolars, extracted as a result of orthodontic or periodontal problems, were instrumented and randomly divided into three groups of 12: BR and BR*, which were filled with CSBS and re-treated after one month and one year of storage, respectively, and AH, which was filled with RBS and re-treated after one month. The same re-treatment protocol was used for all teeth, and the times required for the procedure was recorded.

[Victimization and mental disorders: results of a case-control study].

Aims: The study aimed to evaluate prevalence rates of victimization in a sample of outpatients affected by psychotic or anxiety disorder.

Methods: After informed consent 101 patients (50 affected by psychotic disorders and 51 affected by anxiety disorders according to DSM-IV TR) and a control group of non affected people matched according to gender, age, marital status and education were included in the study. Psychotic patients were submitted to evaluation by means of PANNS; control group was submitted to the MINI interview.