Faruk Akgünlü

The incidence of canine transmigration and tooth impaction in a Turkish subpopulation.

The purpose of this study was to determine the incidence of transmigrated maxillary and mandibular canine teeth and also of the other impacted teeth in a Turkish subpopulation. Five thousand consecutive panoramic radiographs taken of patients who attended the Department of Oral Diagnosis and Radiology, Selcuk University, for routine examination between 2005 and 2007 were examined to identify incidences of transmigrated and impacted teeth. Demographic information of all patients was also recorded. Transmigrations were categorized according to the classification of Mupparapu. The effect of age, gender, and sidedness (left or right side) on the recorded abnormality was evaluated using a t-test. The incidence of transmigrated upper and lower canine teeth was found to be 0.34 per cent [17 patients, 12 females/5 males, with a mean age of 34 years (range 16-76 years)] and 0.14 per cent [7 patients, 4 females/3 males, with a mean age of 37.1 years (range 17-62 years)]. The incidence of tooth impaction was 2.94 per cent [147 patients, 101 females/46 males, with a mean age of 29.7 years (range 15-80 years)]. The most frequently impacted tooth was the upper canine followed by the lower canine, lower second premolar, and upper second premolar. No incidence of maxillary first molar impaction was found. Gender and sidedness did not show a statistical significance on the recorded abnormality (P = 0.22 and P = 0.48, respectively). However, in the 15-29 year age group, this was statistically different (P < 0.05). The incidence of transmigration of impacted mandibular canine teeth was greater than other teeth. With the increased use of panoramic radiographs, it is inevitable that diagnosis of such anomalies will increase.

Investigation of elongated styloid process prevalence in patients with torus palatinus

The aim of the current study was to determine the presence of styloid process elongation (SPE) detected on panoramic radiographs in patients with torus palatinus (TP). Between December 2005 and November 2007, a total of 149 patients with TP are investigated for routine dental examination in the outpatient clinic. Any patient who had disorders related to calcium and phosphorus metabolism was excluded. All medical data were obtained from the files. Twenty (15%) subjects demonstrated SPE at least one side. These patients consisted of 15 women (14.3% of all women) and five men (17.8% of all men). In our previous report performed in normal population at the same region, the prevalence had been found to be 7.7% in 698 dental patients. Although the number of the patients is different in both studies, there is a marked difference in terms of the SPE prevalence between the two reports. This prevalence difference might be related to concomitant disorder.

Alveolar bone changes under overhanging restorations

The aim of this study was to investigate changes in the trabecular architecture of the alveolar bone beneath overhanging restorations with bitewing radiographs in patients having no radiographically visible vertical bone loss. Twenty-eight digital bitewing radiographs with overhanging restorations and 28 digital bitewing radiographs without any restorations belonging to the contralateral side of the same patient were included in the study. Regions of interests (ROI) were created in the alveolar bone along the interproximal regions. These ROIs were segmented to binary images with ImageJ, and, within these binary images, the number of radiographically visible trabecular bone islands per unit area was counted; in addition, the Feret diameter and fractal dimension (FD) were measured. It was found that the mean number of objects per unit area was statistically different in alveolar bone with overhanging restorations from control sites (p < 0.0001). However, the FeD (p = 0.179) and FD (p = 0.963) did not show statistically significant differences between alveolar bone with and without overhanging restorations.

Panoramik radyografta farklı baş pozisyonlarının radyomorfometrik indekslere etkisi

Amac: Panoramik ve radyografide degisen horizontal mandibular kortikal genislik (mental indeks) ve panoramik mandibular indeks olcumleri uzerindeki etkilerini incelemektir.Gerec ve Yontem: Kadavradan alinan kafatasinin dogal bas hareketlerini [saga-sola cevirme hareketi (X duzlemi), asagi-yukari egme hareketi (Y duzlemi) ve saga-sola devirme hareketi (Z duzlemi)] uc boyutlu olarak taklit etmesine olanak saglayan bir duzenek hazirlandi. Bu duzenekte her duzlemde (+) ve (-) yonlerde 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ve 15 derecelerde toplam 66 dijital panoramik radyogram elde edildi. Her radyografide mental indeks ve panoramik mandibular indeks olcumleri yapildi.Bulgular: X duzleminde basin acisi 7 derece ve ustune ciktiginda, Y duzleminde (+) yonde 7 derecenin ustune ciktiginda, (-) yonde ise aci 9 ve 11 derece degistiginde, Z duzleminde hem (+) hem de (-) yonde aci 6 ve 7 derece arttiginda yapilan mental indeks olcumleriyle ideal bas pozisyonu olcumleri arasinda istatistiksel olarak anlamli farklilik belirlendi. Panoramik mandibular indeks olcumlerinde ise X duzleminde olcumlerin bazilarinda, Y duzleminde basin (+) yonde hareketi sirasinda alinan panoramik radyografilerde ozellikle aci 3 derece uzerine ciktiginda yapilan olcumlerle, Z duzleminde (+) yonde acinin 1, 6 ve 7 derece artisindaki olcumler ideal bas pozisyonundaki olcumlerden farkli olarak bulundu. Sonuclar: Panoramik radyografideki olcumlerin dogru olabilmesi icin hastanin basinin uygun pozisyonlandirilmasi gerekmektedir.