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OBJECTIVES The present study sought to determine the average ages of suspicion, diagnosis, and amplification of profound hearing loss and intervention in deaf children and to compare at-risk and not-at-risk children based on the studied ages. METHODS This study was conducted on 86 children under 6 years of age with profound bilateral hearing loss in(More)
OBJECTIVE This study was conducted to evaluate the effects of zinc supplementation on glucose homeostasis parameters and lipid concentrations in PCOS women. We are aware of no study evaluating the effects of zinc supplementation on metabolic profiles of patients with polycystic ovary syndrome (PCOS). METHODS This randomized, double-blind,(More)
INTRODUCTION The aim of this experimental laboratory study was to evaluate the effect of different mixing and placement techniques on compressive strength (CS) of calcium-enriched mixture (CEM) cement. METHODS AND MATERIALS CEM powder was mixed with its liquid either by hand mixing or amalgamator mixing. The mixture was loaded to cylindrical acrylic molds(More)
BACKGROUND Aging can cause loss of balance, which may lead to physical and psychological problems. As the role of the otolith organs in maintaining postural stability has been emphasized in recent years, the present study investigated the effect of aging on saccular function using cervical vestibular evoked myogenic potentials (cVEMP). METHODS The(More)
The effects of three concentrations of carvacrol, the constituent of Zataria multiflora Boiss (a monoterpenoid phenol, C(10) H(14) O) and 10 nm atropine on muscarinic receptors were tested on: non-incubated (n = 7), incubated tracheal chains with propranolol and chlorpheniramine (n = 6) and incubated with propranolol (n = 5). The EC(50) of all three(More)
UNLABELLED Tinnitus is a debilitating condition that is widespread yet difficult to successfully diagnose and treat. This symptom can seriously affect the individual's life quality. OBJECTIVES The aim of current study was to compose and validate a Persian version of the Tinnitus Handicap Inventory (THI-P). MATERIALS AND METHODS The linguistic validation(More)
BACKGROUND According to previous studies, most of the speech recognition disorders in older adults are theresults of deficits in audibility and auditory temporal resolution. In this paper, the effect of ageing on timecompressedspeech and auditory temporal resolution by word recognition in continuous and interrupted noisewas studied. METHODS A(More)
OBJECTIVES Musculoskeletal disorders (MSDs) compose a large part of occupational diseases in dental professionals, prevention of which is dependent on assessment and improvement of job postures by means of ergonomic interventions. This study was aimed at evaluation of ergonomic conditions of the profession of dentists and also at assessing the relationship(More)
The effects of three concentrations of aqueous-ethanolic extract, 10 nM atropine and saline on muscarinic receptors were tested on two groups of non-incubated (group 1; n = 7) and incubated tracheal chains with propranolol and chlorpheniramine (group 2; n = 6). The EC₅₀ of higher concentration of the extract (2 µg mL⁻¹) in group 2 was significantly greater(More)
The effect of three concentrations of safranal on histamine (H(1)) receptors was tested on two groups of tracheal chains incubated with: 1) indomethacin, and 2) indomethacin, propranolol and atropine (n = 6). The EC(50) (effective concentration of histamine causing 50% of maximum response) obtained in the presence of chlorpheniramine and all concentrations(More)