The effect of education based on health belief model on hand hygiene behavior in the staff of Tehran dentistry centers: A quasi-experimental intervention study.

Background And Aims: Considering the increasing prevalence of dental services in the community and the impossibility of identifying each infected patient, hand sanitation is the most critical factor in controlling infection in these centers. Therefore, this study aimed to determine the effect of educational intervention on the hand health behavior of the staff of Tehran dentistry clinics based on the health belief model (HBM).

Methods: In this quasi-experimental study in 2017, 128 employees of the health centers were selected through a multistage sampling method and they were placed in two groups of intervention and control (each 64 people).

Comparison of bacterial microleakage of three bioactive endodontic sealers in simulated underwater diving and aviation conditions.

Background: Bacterial microleakage is an important cause of apical periodontitis and endodontic treatment failure. This study aimed to assess the bacterial microleakage of nano-mineral trioxide aggregate (nano-MTA) as a sealer, Endoseal MTA, and GuttaFlow Bioseal sealers in atmospheric pressure, and simulated underwater diving and aviation conditions.

Methods: In this in vitro, experimental study, 180 extracted single-rooted teeth were cleaned and shaped, and were then randomly divided into three groups for single-cone obturation using Endoseal MTA, GuttaFlow Bioseal, or nano-MTA as a sealer.

Extraoral Sinus Tracts of Odontogenic Origin: A Case Series.

Extraoral sinus tracts of odontogenic origin often develop as the result of misdiagnosis of persistent dental infections due to trauma, caries, or periodontal disease. Due to these lesions' imitation from cutaneous lesions, misdiagnosis, and mismanagement, which we frequently encounter, this article aims to describe four cases with manifestations in different parts of the face and the neck. Patients were referred to an endodontist with a history of several surgical procedures and/or antibiotic therapy due to misdiagnosis.