Background: Traffic noise is one of the major sources of environmental pollution that can cause permanent or temporary loss of hearing in drivers. The purpose of this study was to estimate the prevalence of hearing loss among professional long-distance drivers in Bandar Abbas freight terminal. Methods: One thousand long distance occupational drivers in Bandar Abbas freight terminal not certifie...

background: traffic noise is one of the major sources of environmental pollution that can cause permanent or temporary loss of hearing in drivers. the purpose of this study was to estimate the prevalence of hearing loss among professional long-distance drivers in bandar abbas freight terminal. methods: one thousand long distance occupational drivers in bandar abbas freight terminal not certifie...

ANOVA was developed by the English statistician, R.A. Fisher (1890-1962). Though initially dealing with agricultural data[1], this methodology has been applied to a vast array of other fields for data analysis. Despite its widespread use, some practitioners fail to recognize the need to check the validity of several key assumptions before applying an ANOVA to their data. It is the hope that thi...

PURPOSE The objective of this study was to evaluate the clinical acceptability of all-ceramic crowns fabricated by the digital veneering method vis-à-vis the traditional method. MATERIALS AND METHODS Zirconia specimens manufactures by two different manufacturing method, conventional vs digital veneering, with three different thickness (0.3 mm, 0.5 mm, 0.7 mm) were prepared for analysis. Color...