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Öğe Cone beam computed tomography imaging of superior semicircular canal morphology: a retrospective comparison of cleft lip/palate patients and normal controls(Taylor & Francis Ltd, 2018) Altun, Oguzhan; Duman, Suayip Burak; Bayrakdar, Ibrahim Sevki; Yasa, Yasin; Duman, Sacide; Yilmaz, Sevcihan GunenObjective: This study evaluated the prevalence and morphological characteristics of the superior semicircular canal (SSCC) in cleft lip and palate (CUP) patients using cone beam computed tomography (CBCT). Materials and methods: CBCT images of 53CL/P patients (28 males and 25 females) and a control group of 76 patients (42 males and 34 females) were evaluated. Retrospectively, 258 temporal bone images from 129 patients were evaluated in terms of SSCC morphology and divided into a normal pattern (0.6-1.7mm in thickness), a papyraceous pattern (<0.5mm), a thick pattern (>1.8mm), a pneumatized pattern and dehiscent. The chi-squared test was used to compare differences among semicircular canal dehiscence (SSCD) patterns in the CL/P and control groups; p <.05 was taken to reflect statistical significance. Results: The characteristics of the SSCC were evaluated on CBCT images in patients with CL/P and controls. In total, 158 (61%) cases were normal (0.6-1.7mm in thickness), 31 (12%) papyraceous (<0.5 mm), 8 (3%) thick, and 34 (13%) pneumatized. SSCD was observed in 27 (11%) cases. Statistically significant differences between the CL/P and control groups were evident in terms of SSCC morphology (p<.001). Conclusions: SSCD should be considered if a CL/P patient exhibits a vestibular system deficiency. Oral and maxillofacial radiologists should pay attention to SSCD when interpreting CBCT images. Future studies should use high-level spatial resolution CBCT to focus on cleft site and SSCC morphology in larger patient populations.Öğe Cone-beam computed tomography evaluation of C-shape canals and longitudinal grooves of mandibular first and second molar teeth(2019) Duman, Şuayip B.; Duman, Sacide; Bayrakdar, İbrahim S.; Yasa, Yasin; Gumussoy, IsmailAbstract: Aim: This study aims to evaluate the anatomical features and prevalence of C-shaped roots and longitudinal grooves in mandibularfirst and second permanent teeth using cone-beam computed tomography (CBCT).Material and Methods: CBCT records of first and second mandibular teeth from 839 patients who applied to the Department of Oraland Maxillofacial Radiology between 2011 and 2018 were used. The CBCT examination was performed at five different axial levelsand the mandibular molars were classified as types of longitudinal groove and C-shape according to the Fan criteria. Differencesbetween genders, age groups, left and right side and type of tooth were determined.Result: A total of 2903 teeth (1321 first molars and 1582 second molar) from 839 patients were included in the study. C-shapedcanals were found in mandibular first molar teeth with a prevalence of 0.15%, while 4.1% in mandibular second molar teeth. Only twomandibular first molars exhibited C-shaped canal. Female patients had a higher prevalence than males. Longitudinal grooves weremost commonly found lingual surface.Conclusions: The occurence of C-shaped canals in mandibular first and second molars among Turkish population was generallyless than in other populations. CBCT is a valuable tool to evaluate the C-shaped root canal configuration in vivo.Öğe Cone-beam computed tomography evaluation of C-shape canals and longitudinal grooves of mandibular first and second molar teeth(2019) Duman, Burak Suayip; Duman, Sacide; Bayrakdar, Ibrahim Sevki; Yasa, Yasin; Gumussoy, IsmailAim: This study aims to evaluate the anatomical features and prevalence of C-shaped roots and longitudinal grooves in mandibular first and second permanent teeth using cone-beam computed tomography (CBCT). Material and Methods: CBCT records of first and second mandibular teeth from 839 patients who applied to the Department of Oral and Maxillofacial Radiology between 2011 and 2018 were used. The CBCT examination was performed at five different axial levels and the mandibular molars were classified as types of longitudinal groove and C-shape according to the Fan criteria. Differences between genders, age groups, left and right side and type of tooth were determined. Result: A total of 2903 teeth (1321 first molars and 1582 second molar) from 839 patients were included in the study. C-shaped canals were found in mandibular first molar teeth with a prevalence of 0.15%, while 4.1% in mandibular second molar teeth. Only two mandibular first molars exhibited C-shaped canal. Female patients had a higher prevalence than males. Longitudinal grooves were most commonly found lingual surface. Conclusions: The occurence of C-shaped canals in mandibular first and second molars among Turkish population was generally less than in other populations. CBCT is a valuable tool to evaluate the C-shaped root canal configuration in vivo.Öğe Cone-Beam Computed Tomography Evaluation of the Eustachian Tube in Patients With Cleft Lip and Palate Compared With Normal Controls(Lippincott Williams & Wilkins, 2020) Duman, Suayip Burak; Bayrakdar, Ibrahim Sevki; Yasa, YasinThe authors compared the morphological features of the Eustachian tube (ET) between patients with cleft lip and palate (CL/P) and normal controls using cone-beam computed tomography (CBCT). CBCT images of 51 CL/P patients (28 males and 23 females, mean age: 18.5 +/- 8.0 years) and a control group of 52 patients (22 males and 30 females, mean age: 25.23 +/- 10.65 years) were retrospectively evaluated. The Eustachian tube angle (ETA), Eustachian tube length (EL), and auditory tube angle (ATA) were measured on CBCT images. The ETA, EL, and ATA in the CL/P and normal control groups were 30.4 +/- 6.2 and 36.7 +/- 7.5 degrees; 24.7 +/- 3.7 and 27.7 +/- 4.3 mm; and 142.4 +/- 7.8 and 136.3 +/- 4.1 degrees, respectively. All between-group differences were statistically significant (allP < 0.05). There were no significant between-gender differences in either group (allP > 0.05). Continuous variables were compared using the Mann-Whitney U-test. The morphological features of the ET, measured via multiplanar reconstruction CBCT, differed between CL/P patients and normal controls. CBCT can be used to evaluate ET morphological features.Öğe Correlations between fractal dimension of mandibular condylar bone and Degenerative Joint Disease - A CBCT based analysis(2019) Gümüşsoy, İsmail; Duman, Şuayip B.; Bayrakdar, İbrahim S.; Yasa, Yasin; Cakur, BinaliAbstract: Aim: The aim of this study was to determine whether correlationsexisted between the fractal dimension (FD) valueof the mandibular condyle and radiographic findingsof degenerative joint disease (DJD) using cone beam CT(CBCT).Materials and Method: 100 TMJ CBCT images wereretrospectively analyzed. CBCT images of patients wereassessed with regard to erosive degenerative bone change(DBC) in the mandibular condyle. We divided eachcondyle into 3 groups and scored (0, 1, 2) according todiagnosis of DJD: with 0 indicating normal condyles ornon-demonstrable change, 1 indicating mild erosive DBCand 2 indicating severe erosive DBC. Fractal analysis (FA)was applicated to CBCT image of mandibular condyle.FD values were compared with the radiographic diagnosisscores.Results: ANOVA test showed that there was statisticallysignificant difference between the FD values of patientwith erosive DBC and patient having no erosive change.The average FD value of patient group 0 was 1.079, theaverage FD value of patient group 1 was 1.052, the averageFD value of patient group 2 was 1.036. Lower FD valuesand more severe degenerative changes were seen inpatient group 2.Conclusion: In our study, we found that as the gradeof bone degeneration increased, FD values decreased.These findings suggest a promising result in related topic.However, this paper is a preliminary study of FA andDBC. Further studies should be performed to ensure FA isclinically feasible.Öğe Evaluation of radix entomolaris in mandibular first and second molars using cone-beam computed tomography and review of the literature(Springer, 2020) Duman, Suayip Burak; Duman, Sacide; Bayrakdar, Ibrahim Sevki; Yasa, Yasin; Gumussoy, IsmailObjectives The aim of the present study is to identify the prevalence of radix entomolaris in mandibular first and second molars and to determine morphological classifications and associations with other root and canals. Methods Mandibular first and second molar teeth of 850 Turkish patients were evaluated using cone-beam computed tomography. A total of 2800 mandibular first molars and second molars were screened. The CBCT examination was performed at five different axial levels. The prevalence of total radix entomolaris, unilateral-bilateral, right-left side and gender distributions, and the classification of radix entomolaris's canal configurations were measured. Results Radix entomolaris was found in 2.9% (n = 25) of the patients and 1.2% (n = 34) of the teeth. The prevalence of radix entomolaris in mandibular first molars was higher than in mandibular second molars (p < 0.01), in males than in females (p < 0.05) and in right side than left side. An additional tubercle was found in 23% of the teeth with radix entomolaris. For buccolingual orientation, Type A canal variation was the highest and Type C canal variation was the lowest. Regarding locations of cervical parts, Type III canal variation was the highest while Type I canal variation was the lowest. Conclusions The prevalence of radix entomolaris was lower in the Turkish population than in other Asian populations but, in multiethnic societies, it needs attention. Before starting endodontic treatment, the clinician should examine the radiography thoroughly and apply advanced radiography methods when necessary. Cone-beam computed tomography is a valuable advanced radiography method for assessing such anatomical variations in vivo.Öğe Evaluation of radix entomolaris in mandibular first and second molars using cone-beam computed tomography and review of the literature (vol 36, pg 320, 2020)(Springer, 2022) Duman, Suayip Burak; Duman, Sacide; Bayrakdar, Ibrahim Sevki; Yasa, Yasin; Gumussoy, Ismail[Abstract Not Available]Öğe Evaluation of Relationship Between Maxillary Sinus Volume and Nasolacrimal Canal Dimension Using Cone Beam Computed Tomography(2022) Yeşiltepe, Selin; Sağlam, Hande; Duman, Şuayip Burak; Bayrakdar, İbrahim Şevki; Yasa, Yasin; Dedeoğlu, NumanIntroduction: The objective of this study was to evaluate a possible relationship between maxillary sinus volume (MSV) and the diameter and length of the nasolacrimal canal (NC) using cone beam computed tomography (CBCT) data. Methods: In this retrospective study, CBCT scans of 93 patients were evaluated. The maxillary sinuses and NCs were evaluated separately using Fujifilm-Synapse 3D software. 186 measurements of NC and maxillary sinuses were made in 93 patients. Results: The total mean patient age was 38.2 ± 15.2 years. There were no significant differences between genders in terms of MSV, length, and diameter of NC. No statistically significant differences were found between the two sides in terms of MSV, length, and diameter of NC. While a negative correlation was detected between MSV and NC diameter, a positive correlation was found between MSV and NC length. Discussion and Conclusion: As the maxillary sinus medial wall forms the lateral border of the nasal cavity, the recognition and preservation of the nasolacrimal canal is essential for better postoperative results in surgical procedures to be applied to this area. In our study, it was found that as MSV increased, the diameter of the NC decreased and its length increased.Öğe Evaluation of Sella Turcica Shape and Dimensions in Cleft Subjects Using Cone-Beam Computed Tomography(Karger, 2017) Yasa, Yasin; Bayrakdar, Ibrahim Sevki; Ocak, Ali; Duman, Suayip Burak; Dedeoglu, NumanObjective: The aim of this study was to assess the morphology of the sella turcica and measure its size in cleft and noncleft subjects. Material and Methods: Cone-beam computed tomography (CBCT) images of 54 individuals (29 males; 25 females) with cleft and 85 (22 males; 63 females) without cleft were used for this study. Syndromic patients with cleft(s) were not included because of possible additional endocrinological and/or morphological disorders. Linear measurements included length, depth, and diameter. The shape of the sella turcica was analyzed in the cleft and noncleft groups. An independent t test was conducted to evaluate differences between genders and groups. One-way ANOVA was used to compare age groups. Results: The length (p < 0.001) of the sella turcica was smaller in noncleft subjects than in cleft subjects. Diameter (p = 0.014) and depth (p = 0.005) showed as constantly increasing from an age < 15 to >25 years in the overall assessment. The distribution of the shape of the sella turcica differed significantly between groups (p < 0.001). Conclusions: In this study, CBCT was used to assess the morphology of the sella turcica. A majority of the subjects with cleft had a flattened sella turcica compared to that of the control group. A shorter length of the sella turcica was more evident in the cleft subjects than in the control group. (C) 2016 S. Karger AG, BaselÖğe Morphologic Evaluations of Hypoglossal Canal using Cone Beam Computed Tomography(Univ Kebangsaan Malaysia, 2021) Duman, Suayip Burak; Seyrek, Mehmet; Yasa, Yasin; Gumussoy, Ismail; Dedeoglu, Numan; Bayrakdar, Ibrahim SevkiHypoglossal canal (HC) which begins from very slightly above the inner part of the anterolateral portion of the foramen magnum and is located above the occipital condyle of the occipital bone. The aim of this study is to examine HC morphology and variations using cone beam computed tomography (CBCT). The morphology and types of HC were investigated with 303 CBCT images (606 side). type 1 variation in 606 HC examined becomes the most commonly observed type (57.3%) while type 5 variation was the least common type of variation (0.8%). Type 1 BC was statistically higher in males (p=0.004). Because of HC, which is an anthropologically important point and enters the field of images in CBCT scan, it is recommended that dental radiologists should be aware of their variations and be wary of the pathologies that may occur in this region.Öğe Morphometric Analysis of Sella Turcica Using Cone Beam Computed Tomography(Lippincott Williams & Wilkins, 2017) Yasa, Yasin; Ocak, Ali; Bayrakdar, Ibrahim Sevki; Duman, Suayip Burak; Gumussoy, IsmailObjective: The purpose of this study was to assess morphological shape and morphometric analysis of the sella turcica using cone beam computed tomography (CBCT) in different planes of section (coronal and sagittal). Materials and Methods: CBCT images of 177 subjects of which 51 males and 126 females in the age group of 11 to 73 years were included in the study population. Linear dimensions which include the length, depth, diameter, and interclinoid distance were measured and the shape of sella turcica was analyzed. Results: Sella turcica had circular morphology in 69.5% of the subjects while flattened shape of sella turcica was observed in 16.4%, oval shape of sella turcica in 14%. There was no significant difference in the all measurements of sella turcica between males and females (P > 0.05). Diameter (P < 0.01), depth (P < 0.001), length (P < 0.05), and interclinoid distance (P < 0.05) of the sella turcica differed significantly with age. Conclusions: The anatomical structure of sella turcica can be studied effectively in CBCT images. Linear dimensions and shape of sella turcica in the current study can be used as reference standards for further investigations.Öğe What can Blockchain technology bring to oral and maxillofacial radiology?(Elsevier Science Inc, 2020) Bayrakdar, Ibrahim Sevki; Yasa, Yasin; Duman, Suayip Burak; Orhan, Kaan[Abstract Not Available]
