Roxana Hashemian

Boston University | BU · School of Public Health

The decision to save or extract a natural tooth which has been compromised is one of the dilemmas of dental practitioners, as well as the patients. Although there was a considerable effort to save the natural teeth in the past, with the introduction of osseointegrated implants, there is a tendency to extract the compromised teeth and replace them w...

The association between air pollution and bone health was evaluated in adolescents in the city of Tehran. This study is essentially ecological. Vitamin D deficiency among adolescents has been reported at higher rates in polluted areas than in non-polluted areas. Additionally, residence in polluted areas is associated with lower levels of bone alkal...

Oral rehabilitation of patients with skeletal disorders requires important considerations and precautions. Ankylosing spondylitis (AS) is an in ammatory disease of the axial skeleton which can also a ect the peripheral joints including the temporomandibular joint (TMJ). Patients with AS can su er from skeletal pain during long dental appointments....

Introduction It is estimated that Iran accounted for about 1% of hip fracture burden of the world in 2007, but these data are based on incomplete evidence. As the country’s population is ageing, it is expected that a dramatic rise in hip fracture incidence will result. There is no single national study that accurately estimates the incidence of all...

The post-and-core pattern duplication technique is a simple, cost-effective, and accurate method of ensuring the reproducibility of a cast post and core. An acrylic resin pattern is fabricated for an endodontically treated tooth. The post portion of the pattern is duplicated with a polyvinyl siloxane impression material in the lower compartment of...

Objectives: The use of metal oxide nanoparticles has attracted lots of attention, mostly because of their promising antimicrobial activity along with their biocompatibility with mammalian cells. This study aims to investigate the in vitro and ex vivo antimicrobial efficiency of nano-magnesium oxide (MgO) aqueous solution against endodontic pathoge...