Y azışm a A dresi / A dd ress rep rint req u ests to: Arzu Dem ir M arm ara U niversity, Fa cu lty o f D en tistry, D e p a rtm e n t o f Oral and M axillo facial R adiology, Istanb ul-T u rkey E lek tro n ik posta adresi / E-m ail a d d ress: dt.arzu d em ir@ g m ail.co m Kab ul tarihi / Date o f a cce p ta n ce: 15 Te m m u z 2015 / Ju ly 15, 2015 ÖZET Dişli hasta grubundan oluşan Türk subpopülasyonunda konik ışınlı bilgisayarlı tomografi ile mental foram ende anterior loop değerlendirm esi Amaç: Bu retrospektif çalışm anın amacı mental foram ende anterior lup varlığının Türk subpopülasyonundaki sıklığını ve tiplerini konik ışınlı bilgisayarlı tomografi (KIBT) ile değerlendirm ektir. Yöntem ler: Çalışmada 20-69 yaşları arasında 138 kadın, 141 erkek olm ak üzere 279 dişli hasta değerlendirilm iştir. M andibular kanalın mental foram ende sonlanma şekli 3 tip olarak sınıflandırılm ıştır. Buna göre Tip 1; mental dalın inferior alveolar siniri mental foram enin posteriorunda kalacak şekilde terk etmesi olarak tanım lanm ıştır. Tip 2; mental dalın infe rior alveolar siniri mental foram ene dik olacak şekilde terk etmesi olarak tanım lanm ıştır. Tip 3; mental dalın inferior alveolar siniri mental foram e nin anteriorunda kalacak şekilde terk etmesi olarak tanım lanm ıştır. Tip 1 ve 2 de anterior lup varlığından bahsedilm ezken Tip 3' ün anterior lup varlığını gösterdiği belirtilm iştir. Bulgular: Tip 3, Tip2 ve Tip1 sonlanma şekillerinin dağılımı sırasıyla % 59.5, %31.9 ve %8.6 olarak belirlenm iştir. Aynı hastada sağ ve sol tarafta aynı anda Tip 1, Tip 2 ya da Tip 3 sonlanma şekli dağılımları ise sırasıyla %1.8, %17.2 ve %45.5 olarak bulunm uştur. Sağ ve sol tarafta kadınlar ve erkekler arasında istatistiksel olarak anlam lı bir farklılık tespit edilmemiştir. Sonuç: KIBT; mental sinirin inferior alveolar sinirden ayrılıp mental foram ene ulaşm ak için izlediği yolu üç-boyutlu olarak değerlendirm ek için güvenle kullanılabilir. Foram enler arası bölgeyi ilgilendiren bir çok cerrahi operasyon öncesinde, mental foram enin m eziyalinde mental sinir dalına ait olası bir lup varlığı kolaylıkla tanım lanabilir.

Objective: Idiopathic osteosclerosis (IO) was defined as an asymptomatic, incidental radiographic finding of intrabony sclerosis with unknown origin. The purpose of this retrospective study is to evaluate IO distribution, location, relationships and radiographic features by cone beam computed tomography (CBCT) in Turkish subpopulation. Methods: The study group consisted of CBCT images of 279 individuals, 140 females and 139 males aged 20-69. In received images IO distribution, location in the jaws, dental and cortical relationships, shape and internal structure were evaluated. In axial and cross-sections superoinferior (SID), mesiodistal (MDD) and buccolingual (BLD) distances of IO were measured. The data was compared with age groups and gender. Results: Ninety-two IO in 75 individuals were detected with 26.9% distribution rate. There was a higher prevalence in mandible (82.6%) than maxilla (17.4%). The most frequently involved area was posterior mandible (43.4%). No statistically significant difference in the distribution of IO was found between genders (p>0.05). There was a higher prevalence among young group than middle-aged and above middle-aged groups (p=0.026). According to relation of IO with dental roots separate IO (76.1%) was the most frequent relationship. Seven IO (7.6%) were detected as not related with any cortical structure. Mean SID, MDD and BLD were recorded 5.58; 4.80 and 4.18 mm respectively. Conclusion: IO was detected at a high rate in Turkish subpopulation. CBCT was found as an efficient method to evaluate radiographic features, relationships and location of IO within the jaws before surgical and orthodontic operations.

Objectives:The purpose of the present study was to examine ultrasonographic appearances of Masseter Muscle (MM) in dentate and edentulous patients without Temporomandibular Disorder (TMD).Materials and Methods: The thickness of the MM in 25 dentate (mean age: 30,68 ± 10,49) and 24 edentulous (mean age: 61,46 ± 9,71) patients, who visited routine dental examination, was measured at rest and at maximum contraction bilaterally. Examinations were performed using an Aloka Prosound α6 (Hitachi Aloka Medical Systems, Tokyo, Japan) equipped with an 8 MHz-wide bandwidth linear active matrix transducer (ranging from 1 to 15 MHz). The visibility and width of the internal echogenic bands of the MM were also assessed and the muscle appearance was classified as I of III types. Type I, characterized by the clear visibility of the fine bands; Type II, thickening echogenicity of the bands; Type III, disappearance or reduction in a number of the bands.Results:MM thickness at rest and contraction in the dentate group were significantly higher than the edentulous group (p <0.05). Type I was the most common echogenic type in both dentate (right:16 (64%), left; 15 (60%)) and edentulous patients (right; 22 (91.7%), left; 18 (75%)). In a dentate group, type II was significantly higher than the edentulous group in both the right and left sides (p <0.05; p <0.01, respectively). Age and gender seemed to have no significant effect on the echogenic type (p ˃0.05).Conclusion:There were significant differences in the thickness at rest and contraction between the dentate and edentulous groups. It was clarified that ultrasonographic features of the MM in dentate and edentulous patients were different.

Therapeutic case series, Level IV.

This study showed that CBCT findings except extraction socket were significantly higher than PR. CBCT combined with clinical examination can be used effectively to determine the borders of effected areas especially at advanced cases.