Does Smear Layer Removal Influence Root Canal Therapy Outcome? A Systematic Review.

Objective: The aim of this systematic review was to determine whether the smear layer (SL) removal procedure influences the outcome of root canal treatment.

Study Design: We performed a search on Pubmed, Scopus, ISI Web of Science, Cochrane Library, Lilacs and SIGLE. We included randomized controlled clinical trials (RCT), with clinical and radiographic outcomes, conducted on subjects who had undergone root canal therapy.

Squamous cell carcinoma at maxillary sinus: clinicopathologic data in a single Brazilian institution with review of literature.

Squamous cell carcinoma arising at maxillary sinus is a rare neoplasm, characterized by aggressive growth pattern and glooming prognosis. There are no studies describing specifically its epidemiology in the South America. The aim of the current paper is to characterize a Brazilian maxillary sinus squamous cell carcinoma sample and to compare such data with others worldwide relevant series.