Mitigating saliva aerosol contamination in a dental school clinic.

Background: Transmission of COVID-19 via salivary aerosol particles generated when using handpieces or ultrasonic scalers is a major concern during the COVID-19 pandemic. The aim of this study was to assess the spread of dental aerosols on patients and dental providers during aerosol-generating dental procedures.

Methods: This pilot study was conducted with one volunteer.

Effect of F-File on removal of the smear layer: a scanning electron microscope study.

The aim of this study was to evaluate the effectiveness of F-File with NaOCl on removal of the smear layer. A total of 48 single-rooted teeth were instrumented using crown-down technique with one of the irrigation agents: distilled water, 5.25% NaOCl, RC-Prep, Glyde, MTAD or F-File with NaOCl.

Importance of third mesial canals in mandibular molars: report of 2 cases.

Most mandibular first molars have 2 mesial canals. Two cases of failed endodontically treated first mandibular molars are presented with 2 obturated mesial canals. The cases were retreated with a third mesial canal identified, and instrumented and obturated with resolution of the patients' signs and symptoms.

Observation of depth and incidence of the mesial groove between the mesiobuccal and mesiolingual orifices in mandibular molars.

The purpose of this study was to analyze the mesiolingual-mesiobuccal groove indentations at the pulpal floor in mandibular first and second molars. The depth and incidence of occurrence were assessed. Sixty freshly extracted, mature teeth were kept in a 2.