Biomedical subjects

Tamer Erdem

Publications and source records attributed to Tamer Erdem.

24 records · Page 2Linked to original sources

PubMed2002

Effects of the electromagnetic field of mobile telephones on hearing.

The widespread use of mobile telephones has given rise to concern about the potential influences of electromagnetic fields (EMFs) on human health. Anatomically, the ear is in close proximity to the mobile telephone during use. Hearing loss due to mobile telephone use has not been described in the medical literature; however, if there is a subtle cochlear involvement, it might be detected by means of changes in evoked otoacoustic emissions (OAEs). Thirty volunteers with normal hearing were exposed to mobile telephone EMFs for 10 min and evoked OAEs were measured before and after exposure. No measurable change in evoked OAEs was detected and none of the subjects reported a deterioration in hearing level. To the best of our knowledge, this is the first study on the effects of EMFs emitted by mobile telephones on hearing. It was concluded that a 10-min exposure to the EMF emitted from a mobile telephone had no effect on hearing, at least at outer ear, middle ear and cochlear levels.

Adult↗

PubMed2002

Maxillary sinus hypoplasia.

Maxillary sinus hypoplasia (MSH) is an uncommonly encountered condition by otolaryngologists. The computerized tomography (CT) scans provide valuable data about the anatomic details of the paranasal sinuses. MSH may be misdiagnosed as an infection or a neoplasm of the maxillary sinuses. Variations of the other paranasal structures, especially the uncinate process associated with MSH were defined. MSH shows three distinct hypoplasia patterns. Type I MSH characteristics are mild hypoplasia of the maxillary sinus, normal uncinate process and a well-developed infundibular passage. Significant hypoplasia of the maxillary sinus, hypoplastic or absent uncinate process and absent or pathologic infundibular passage are seen in Type II MSH. Type III MSH is characterized by the absence of an uncinate process and cleft-like maxillary sinus hypoplasia. In this study a series of 18 patients with MSH were presented. Twelve cases of unilateral and 6 cases of bilateral maxillary antrum hypoplasia were evaluated and 13 MSH type I, 7 MSH type II and 4 MSH type III were detected. Three ethmomaxillary sinuses, an overpneumatized posterior ethmoid cell into the orbit and the maxillary sinus were determined. Our series showed that the uncinate process anomalies related to MSH may lead to inadvertent orbital complications and therefore should be kept in mind.

Adult↗

PubMedDate not supplied

Laryngotracheal reconstruction of the congenital glotto-subglottic stenosis with autogenous thyroid cartilage interposition: a case report.

Surgical correction of grade III glotto-subglottic stenosis in a two-month-old girl was illustrated in a staged manner. Firstly, a silicone keel was placed via anterior thyrotomy following a tracheotomy. Secondly, laryngotracheal reconstruction was performed by interposing an autogenous thyroid cartilage anteriorly between the edges of the longitudinally divided cricoid cartilage and the upper tracheal rings. A stent was maintained for two months. The glottis and subglottis appeared patent and healed following removal of the stent. A meaningful voice and rather comfortable respiration were observed during a 13-month follow-up. The use of thyroid cartilage autograft offers many advantages in laryngotracheal reconstruction with considerably less technical difficulty.

Female↗

PubMedDate not supplied

[Graft materials used in the reconstruction of saddle nose].

A large number of graft materials, either biologic or alloplastic, has been described in the reconstruction of saddle nose deformity to provide a structural support to the nasal dorsum and tip. Although autogenous materials are thought to be more advantageous, there is still no consensus regarding the most suitable surgical graft material for saddle nose. Each graft material presents some advantages and disadvantages. This article reviews current knowledge about graft materials used in the treatment of saddle nose deformity.

Biocompatible Materials↗

PubMedDate not supplied

Inverted impaction of primary incisors: a case report.

Dental and radiological findings of a 5-year-old female patient show inverted impaction of the maxillary primary incisors. Family and personal histories of the patient were unremarkable. There were no abnormalities in general growth and development nor was there any history of trauma.

Child, Preschool↗

PubMedDate not supplied

Nasal pyriform aperture stenosis in adults.

BACKGROUND: Congenital nasal pyriform aperture stenosis (CNPAS) leading to respiratory insufficiency in infants has been well documented. Nevertheless, the nasal pyriform aperture stenosis (NPAS) entity in adulthood has not been discussed at all. The normative data of the width of the pyriform aperture, which has not been revealed before, is necessary for evaluation of the adult subjects with nasal bony inlet stenosis. The aim of this study was to define the normative data about the pyriform aperture width measured in 80 adult subjects with paranasal sinus symptoms without nasal obstruction and, additionally, to report the surgical results of two representative cases with NPAS. METHODS: The nasal bony inlet width measurements have been achieved in axial computerized tomographic sections to establish normative data. The maximal distance between the nasal processes of the opposite maxillary bones was measured. Two adult males complaining of nasal obstruction with overt pyriform aperture stenosis were treated surgically via a sublabial approach. RESULTS: The mean widest dimension of the nasal pyriform aperture was 21.6 +/- 2.2 mm (range, 17-27 mm) in 80 adult subjects. This width was 21.9 +/- 2.1 mm (range 18-27 mm) in men and 21 +/- 2.2 mm (range, 17-26 mm) in women. Stenotic pyriform apertures in two patients were widened surgically by drilling via a sublabial approach from 12 and 10 mm to 24 and 21 mm, respectively. CONCLUSION: NPAS should be included in the list of differential diagnosis for nasal obstruction. Surgical enlargement using a sublabial approach was found an effective and adequate treatment in pyriform aperture stenosis.

Adult↗