background and aim: it is well - known that sex hormones regulate bone metabolism. sex steroids increase osteoblasts activities and affect growth, remodeling and bone homeostasis. the aim of this study was to examine the effects of sex hormones deficiency on craniofacial growth in rats. methods & materials: fifty, thirty–day–old wistar rats comprised the sample in this experimental study. 25 ma...

introduction: nager syndrome is a malformation resulting from problems in the development of the first and second branchial arches and limb buds. the cause of the abnormal development of the pharyngeal arches in nager syndrome is unknown. it is also unclear why affected individuals have bone abnormalities in their arms and legs. nager syndrome is thought to have an autosomal recessive inheritan...

Fibrous dysplasia (FD) is an osseous growth dis-order, producing immature bone and characte-rized by the replacement of normal bone with fibro-osseous connective tissue. It is a bone dys-plasia that has the potential to cause significant cosmetic and functional disturbances, particularly in the craniofacial skeleton. Cra-niofacial fibrous dysplasia is one of the three types of polyostotic fibro...

craniofacial  anomalies  include  clefts,  synostoses,  atrophic  abnormalities,neoplasias etc. among which cleft lip and/or palate caused by abnormal facial development during gestation is one of the most prevalent congenital defects. its overall occurrence is about 1:700 ranging from 0.02 to 4.04 in 1000 live births. there are different etiologic factors considering the cleft cause. in most c...

craniofacial fi brous dysplasia (fd) is one of three types of fd which can affect the craniofacial complex. it is the proliferation of cellular fi brous connective tissue intermixed with irregular bony trabecules. it is a developmental tumor-like condition that is characterized by replacement of normal bone. the purpose of this report is to present a rare case of craniofacial polyostotic fd tha...

case presentation this case concerns a 3-year-old girl whose medical history includes an acid attack suffered 3 years ago. she began treatment for the restoration of her scalp hair, but five weeks later, she presented at our clinic with a high-grade fever and infectious discharge from the commissure of the skull following a scalp expansion graft. microbiologic and radiologic work-ups were condu...

regardless of severity, earlier intervention to correct hearing loss in children improves speech development and conversational abilities. a cross-sectional study was performed on 230 neonates who were at risk of hearing loss in tehran university of medical sciences hospitals between september 2000 and february 2002. hearing was examined before the 3rd month by auditory brainstem responses (abr...

fibrous dysplasia (fd) is an osseous growth dis-order, producing immature bone and characte-rized by the replacement of normal bone with fibro-osseous connective tissue. it is a bone dys-plasia that has the potential to cause significant cosmetic and functional disturbances, particularly in the craniofacial skeleton. cra-niofacial fibrous dysplasia is one of the three types of polyostotic fibro...