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Biomedical subjects

B Erdoğan

Publications and source records attributed to B Erdoğan.

At least 19 recordsLinked to original sources
PubMed2001

Craniofacial growth and skeletal maturation: a mixed longitudinal study.

The purpose of this study was to investigate the relationship between craniofacial growth and skeletal maturation. The material consisted of the cephalometric and hand-wrist film pairs of 35 males and 43 females (78 subjects) whose development was followed for a period of 4 to 7 years. The subjects were grouped according to their skeletal maturation. Their mean ages were: Group I 10.27, Group II 11.55, and Group III 14.79 years, respectively, at the beginning of the observation period. Intra- and inter-group differences were examined through paired t-tests, and Pearson correlation analysis was used to detect the relationship between craniofacial growth and skeletal maturation (percentage growth potential). The results show that the middle cranial base (T-W) maintained its stability in all pubertal growth periods. However, posterior cranial base length (T-Ba) increases significantly (P < 0.001) throughout the same period. There were similar increases in the vertical dimensions of the face and alveolar height throughout pubertal growth. Despite the intensified increases in both the sagittal and vertical directions, facial characteristics were constant in the sagittal direction. The skeletal development (percentage growth potential) has clearly been effective in the vertical facial development commencing in Group I and reaching its maximum level in Group II. However Cd-Go was the exception.

Adolescent↗
PubMed2001

Modified mandibulotomy approach to tumors of the oropharynx.

The surgical approach to tumors in the deep oral cavity, oropharynx, and parapharyngeal space has always been a problem. Midline mandibulotomy for exposure and resection of tumors in these areas is usually essential. However, postoperatively accurate and stable reconstruction of the symphysis is difficult. The authors present a modified notch mandibulotomy in a trapezoidal shape to stabilize the symphysis with only a four-hole miniplate. This shape of the osteotomy reduces the time to return to an unrestricted diet and permits more accurate occlusion.

Adult↗
PubMed2000

Comparison of alexandrite laser and electrolysis for hair removal.

BACKGROUND: Different techniques have been used for hair removal. Electrolytic epilation is a widely accepted method for this purpose. Recently laser hair removal was introduced. OBJECTIVE: To evaluate and compare the effectiveness of long-pulse alexandrite laser hair removal with electrolytic epilation. METHODS: Twenty-four areas of unwanted axillar hair in 12 patients were included in the study. The right axillar area of the patients was treated by electrolysis with an intensity of 4-8 mA, and the left area was treated with long-pulse alexandrite laser with fluences between 30 and 50 J/cm2. Electrolysis was performed four times at 3-week intervals, and laser treatment was performed three times at 4-week intervals. Before each session, the hairs in a 4 cm2 area centered in the axilla were counted. The last evaluation was done 6 months after the initial treatment. The pain, time, and cost of each procedure are compared. RESULTS: The average clearance rate of the hairs was 74% by laser and 35% by electrolysis 6 months after the initial treatment. CONCLUSION: Alexandrite laser hair removal is a more reliable and practical solution than electrolysis. Laser hair removal is more expensive than electrolysis, but is 60 times faster and less painful than electrolysis; also fewer sessions are needed with the laser with better results.

Axilla↗
PubMed2000

Three-dimensional computed tomography in evaluation of ankylosis of the temporomandibular joint.

Ankylosis is an uncommon disease of the temporomandibular joint (TMJ), the effective treatment of which requires detailed preoperative evaluation of the type and extent of the deformity. As well as lateral radiographs and computed tomography (CT), three-dimensional CT has been introduced to improve the preoperative evaluation. We present six patients with ankylosis of the TMJ who were evaluated by three-dimensional CT before and after condylectomy. Preoperative findings were compared with operative findings. Three-dimensional CT provides a detailed three-dimensional image of the TMJ non-invasively and we suggest that it is a valuable tool for evaluation of ankylosis in the TMJ.

Ankylosis↗
PubMed2000

Nonsurgical delay of cutaneous flaps using the flashlamp pumped pulsed dye laser.

The surgical delay procedure is an effective method for improving skin flap survival. However, it has many disadvantages, such as bleeding, infection, and pain. It also requires an additional operation and a long time for wound management. Nonsurgical delay has a great importance, but pharmacological efforts for delay phenomena have never found clinical application. In this study, the authors attempted to reproduce the delay phenomena via the flashlamp pumped dye laser. Forty Sprague-Dawley rats were studied in four groups of 10 rats each. The experimental and control flaps were on the same rat. Flaps were planned on the ventral skin of the rats, and were symmetrical, three sided, based caudally, and were 2 cm in width, extended to the measured midpoint between the xiphoid and the sternal notch. The laser was applied to the different areas of the experimental flaps 15 days before flap elevation. A week later flap survival was determined by overlaying millimeter-grid acetate paper. Full-surface and perimeter "lased" experimental flaps showed a marked increase in surviving areas when compared with the control flaps. This kind of flap delay has a great potential in clinic application.

Animals↗
PubMed2000

Cartilage shaping using the Er:YAG laser: preliminary report.

Cartilage grafts have been widely used for reconstruction of congenital or acquired deformities. Reshaping and preserving the new shape of the cartilage grafts have been a problem. In this in vitro experimental study the authors studied the effect of the Er:YAG laser on cartilage reshaping in comparison with scalpel stripping and suture holding. The study consisted four groups (n = 9): group I, untouched cartilage; group II, the short edges of the cartilage were sutured to each other; group III, cartilage was incised using a scalpel; and group IV, Er:YAG laser stripping was applied to the cartilage. Changes in the shape of cartilage were evaluated at 15 minutes, and days 1, 4, and 10. The majority of cartilage in the scalpel-stripped group returned to the initial shape by day 10, whereas the laser-stripped cartilage showed progressive warping day by day, and almost all cartilage formed a circle by day 10. The Er:YAG laser enhanced cartilage warping by a mechanical effect of stripping and a thermal effect of laser radiation resulting in ultrastructural changes.

Animals↗
PubMed1999

The use of iliac bone flap as a penile stiffener in a diabetic patient with erectile dysfunction.

A diabetic man with erectile dysfunction in whom two previous attempts at penile prosthesis implantation had failed was treated by using an iliac bone flap as a penile stiffener. The patient had satisfactory sexual function with his penis; it retained its size and stiffness during the 1-year follow-up period. We recommend this method for use in patients in whom multiple earlier attempts at penile prosthesis implantation were unsuccessful.

Adult↗
PubMed1998

Penile reconstruction in children using a double vascular pedicle composite groin flap.

The purpose of this report is to describe the use of a double vascular pedicle composite groin flap for penile reconstruction in children. The flap was composed of skin, soft tissue and iliac crest bone. Both deep and superficial circumflex iliac vessels were included in the pedicle to ensure a well-vascularized extended skin and bone in the flap. The procedure was carried out in two stages to allow for the prefabrication of a neourethra which was reconstructed in the flap using a full-thickness skin graft, prior to the transfer of the flap. The large skin island and bone with a dual blood supply enabled reconstruction of the penis of appropriate size and stiffness without vascular compromise. Two boys, aged 8 and 10 years, were treated successfully with this method and followed clinically for 4-12 months.

Arteries↗