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Öğe Assessment of The Effects of Edentulousness on Temporomandibular Components by Using Cone Beam Computed Tomography(Univ Indonesia, Fac Dentistry, 2022) Arikan, Busra; Dedeoglu, Numan; Duman, Suayip BurakObjective: The aim of this study is to evaluate the effects of edentulousness on the temporomandibular joint using cone beam computed tomography (CBCT). Methods: In this study, CBCT images were evaluated in a total of 48 patients (24 dentulous, 24 edentulous). Ninety-six temporomandibular joint CBCT images were examined. Eminence inclination, condyle head widths and joint space were measured and statistically compared between the edentulous and dentulous groups. Results: The articular eminence inclination value the mediolateral width of the condyle and the anteroposterior width of the condyle were found significantly higher in the dentulous group than in the edentulous group. There was no significant difference between the dentulous and edentulous groups in terms of the anterior, superior and posterior joint space. Conclusion: In the edentulous patients, the articular eminence inclination value, mediolateral and anteroposterior widths of the condyle head were found to lower in comparison to the dentulous patients.Öğe Clinical significance of maxillary sinus hypoplasia in dentistry: A CBCT study(Polish Dental Soc, 2020) Dedeoglu, Numan; Duman, Suayip BurakBackground. The anatomy of the maxillary sinus is especially important for dentists due to the close proximity of the sinus to the maxillary posterior teeth. Objectives. The aim of the present study was to investigate the frequency of maxillary sinus pathology, anatomical variations, and the relationship between the tooth roots and the maxillary sinus by comparing a group with maxillary sinus hypoplasia (MSH) and a control group using cone-beam computed tomography (CBCT). Material and methods. In the study, 69 CBCT images of 50 patients with MSH and 84 CBCT images of 49 patients without MSH were evaluated for pathology, and the presence of an accessory ostium, a septum and Haller cells in each maxillary sinus. Results. The coincidence of pathology with MSH was 29%, and with non-hypoplastic maxillary sinuses it was 44% (p = 0.055). An accessory ostium was found in 14.5% of scans with MSH and in 39.3% of those without MSH (p = 0.001). Haller cells were found in 2.9% of the MSH cases, whereas their incidence in the control group was 23.8% (p = 0.000). The occurrence of a sinus septum was at the level of 4.3% in the group with MSH and 23.8% in the group without MSH (p = 0.001). Conclusions. The incidence of the relationship between the sinus wall and the posterior root apices was found smaller in the dentulous MSH patients. Also, the distance between the root apices and the sinus wall was longer in the dentulous MSH patients, and the vertical and horizontal alveolar bone was larger in the posteriorly edentulous MSH patients.Öğe Detailed Anatomical Analysis of the Sphenoid Sinus and Sphenoid Sinus Ostium by Cone-Beam Computed Tomography(Lippincott Williams & Wilkins, 2016) Yilmaz, Nesibe; Kose, Evren; Dedeoglu, Numan; Colak, Cemil; Ozbag, Davut; Durak, Mehmet AkifThe aim of this study is the evaluation of the anatomical structures of sphenoid sinus ostium used as a reference point for transsphenoidal surgery by cone beam computed tomography. The authors' study was performed using the cone-beam computed tomography images of 16 to 82-year old 200 (112 female, 88 male) patients (Newton 5G, Verona, Italy). Septum deviation of sphenoid sinus and the distance between 2 ostia were evaluated by coronal and axial sections, respectively. Pneumatization degree of sphenoid sinus, diameter of sphenoid sinus ostium, and distance lower edge of superior turbinate to sphenoid sinus ostium were measured by using sagittal sections. The sellar type was the most common pneumatization type of sphenoid sinus in authors' study. While the C-type septum deviation was observed as the most common, T-type deviation was the least type. Sphenoid sinus ostium was bilaterally in 71.5% of individuals, and it was not found in 10% of individuals included in the study. A significant decrease was determined in diameter of the left sphenoid sinus ostium with aging. The distances between 2 sphenoid sinus ostia were 7.30 +/- 2.77mm for women and 6.09 +/- 2.58mm for men, respectively. No statistical differences were found in women and men in terms of distances between the lower edge of the right and left superior turbinate and sphenoid sinus ostium on their sides. Consequently, making detailed preoperative radiological evaluation of anatomic variations of sphenoid sinus and sphenoid sinus ostium is important in terms of guiding the surgeon in the process of a successful transsphenoidal surgery.Öğe EVALUATION OF ANATOMICAL VARIATIONS OF NASAL CAVITY AND PARANASAL SINUSES WITH CONE BEAM COMPUTED TOMOGRAPHY(Nobel Ilac, 2017) Dedeoglu, Numan; Altun, Oguzhan; Bilge, Osman Murat; Sumbullu, Muhammed AkifObjective: The aim of this study is to evaluate anatomical variations of nasal cavity and paranasal sinuses using cone beam computed tomography (CBCT), which is currently used in dentistry radiology. Material and Method: In this study, 251 patients' nasal cavities and paranasal sinuses were evaluated using CBCT (Newtom 5G, Verona Italy) images in terms of anatomical variations. The high-resolution (voxel and slice thickness: 0.2 mm) multiplanar reformatting images (MPR) were used for the evaluation of the variations. Results: The most common anatomical variation of nasal cavity and paranasal sinuses found in this study was agger nasi cell (95.6%). The most rarely observed variation was sphenoid sinus aplasia (0.8%). There was no statistically significant relationship between concha bullosa and nasal septum deviation. Conclusion: CBCT is a preferred alternative and reliable method for evaluation of anatomical variations of the nasal cavity and paranasal sinuses.Öğe Evaluation of bone area in the posterior region for mandibular molar distalization in class I and class III patients(Springer Heidelberg, 2023) Ozden, Samet; Uslu, Filiz; Dedeoglu, NumanObjectivesThe aim of this study was to investigate the bone area in the posterior region, which is important for mandibular molar distalization in skeletal class I and class III individuals with normodivergent and hyperdivergent vertical growth patterns.Materials and methodsIn this retrospective study, cone-beam computed tomography (CBCT) scans of 120 individuals divided into 4 groups as class I normodivergent (group-I), class I hyperdivergent (group-II), class III normodivergent (group-III), and class III hyperdivergent (group-IV). Retromolar area at crown level measurements was performed on CBCT-derived panoramic radiographs and axial sections. Retromolar area at the root level was measured 2 mm, 4 mm, 6 mm, 8 mm, and 10 mm apical to cemento-enamel junction at CBCT axial sections.ResultsRetromolar area decreased towards the root apex in all groups and smallest retromolar area was level of CEJ(10mm) in all groups. At any root level, the distal root of the mandibular second molar tooth was in contact with the mandibular inner or outer lingual cortex; 50% in group-I, 46.7% in group-II, 23% in group-III, and 23% in group-IV.ConclusionsIn normodivergent individuals, the retromolar area length at the root level is observed to be higher in class III than in class I at almost every level. In hyperdivergent individuals, on the other hand, only at CEJ(10mm) level, it is higher in length in class III than in class I. Vertical growth pattern has no effect on the root and crown level retromolar area in class I and class III individuals.Öğe Evaluation of maxillary sinus anatomical variation and pathologies through cone-beam computed tomography in patients with impacted third molars in the maxilla(2019) Dedeoglu, NumanAim: The aim of this study was to compare between the frequency of anatomical variation and pathology in the maxillary sinuses having the impacted third molars in the maxilla adjacent to the dental arch and the maxillary sinuses adjacent to the dental arch having the erupted third molars. Material and Methods: A total of 284 cone beam computed tomography (CBCT) images of the maxillary sinuses, 141 of which are adjacent to the impacted third molar teeth in the maxilla, and 143 of which are adjacent to the erupted third molar teeth, were retrospectively evaluated. In the CBCT images, the pathology, septa, accessory ostium, overpneumatization, Haller cell and teeth root relation with sinus were evaluated in each maxillary sinus. Results: There were no statistically significant differences in the frequency of pathology (p = 0.402), septa (p = 0.904) and overpneumatization (p = 0.798) between the maxillary sinuses adjacent to the impacted third molar dental arch and the erupted third molar dental arch. However, there was a statistically significant difference in the frequency of accessory ostium (p = 0.032) and Haller cells (p = 0.025) between the maxillary sinuses adjacent to the impacted third molar dental arch and the maxillary sinuses adjacent to the erupted third molar dental arch. Conclusion: In the present study, the frequency of accessory ostium and Haller cells in the maxillary sinuses adjacent to impacted third molar dental arches of the maxilla was found to be lower than in the maxillary sinuses adjacent to erupted third molar dental arches.Öğe EVALUATION OF RADIOPAQUE LESIONS OF THE JAW BONES ON DIGITAL PANORAMIC RADIOGRAPHY IN A TURKISH SUBPOPULATION: A RETROSPECTIVE STUDY(2021) Dedeoglu, Numan; Arıkan, BüşraAim: Panoramic radiography is one of the most basic diagnostic tools in today's dentistry in addition to being the initialexamination radiography. The aim of this study is to evaluate radiopaque lesions of the jaw bones by using digital panoramicradiography images in a Turkish subpopulation.Materials and Methods: This study was conducted by evaluating digital panoramic radiography images of 1011 patients. Inthis study, the incidence of radiopaque lesions of idiopathic osteosclerosis, condensing osteitis, odontoma, cementoblastoma,cemento-osseous dysplasia and fibrous dysplasia were evaluated in addition to gender and localization. Descriptive statistics,chi-square and fisher exact tests were used in the evaluation of the data.Results: In this study, 1011 digital panoramic radiographs were evaluated, 549 (54.3%) of these belonged to female patientsand 462 (45.7%) belonged to male patients. Radiopaque lesions were determined on 76 (7.5%) panoramic radiography. Whileidiopathic osteosclerosis was found in 42 (4.15%), condensing osteitis was found in 23 (2.27%), odontoma was found in 2(0.19%), cementoblastoma was found in 1 (0.09%), cemento-osseous dysplasia was found in 7 (0.69%) and fibrous dysplasiawas found in 1 (0.09%). No statistically significant difference was found between genders in any of the lesions (p>0,05).Conclusion: Radiopaque lesions of the jaws can be evaluated with digital panoramic radiography, which is widely used today.The most common radiopaque lesion in this study was idiopathic osteosclerosis, while the least common was sementoblastomaand fibrosis dysplasia.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 Examination of Nasolacrimal Duct Morphometry Using Cone Beam Computed Tomography in Patients With Unilateral Cleft Lip/Palate(Lippincott Williams & Wilkins, 2017) Altun, Oguzhan; Dedeoglu, Numan; Avci, MehmetObjective: The cleft lip/palate (CLP) deformity negatively affects the anatomy of the nasal cavity and maxilla. The effects of this deformity on the lacrimal system have been unidentified yet. This study aimed to evaluate the morphometric changes in the nasolacrimal duct using cone-beam computed tomography (CBCT) in patients with unilateral CLP. Materials and Methods: Retrospective bilateral measurements of the narrowest transversal diameters and the lengths of the nasolacrimal ducts were made for the affected and unaffected sides of 28 patients with CLP and 28 control patients, using the CBCT images. The measurements were statistically compared. Results: The mean narrowest transversal diameter of the nasolacrimal duct for the affected side of the patients with unilateral CLP was statistically significantly narrower than the unaffected side (P=0.01). There were no statistically significant differences between the control group and the affected and unaffected sides of patient group with unilateral CLP regarding the nasolacrimal duct diameter. The differences were not statistically significant among all groups regarding the mean nasolacrimal duct length. Conclusion: The diameter of the nasolacrimal duct at the affected side of unilateral CLP was narrower than the unaffected side. According to this result, the CLP deformity can have an effect on the nasolacrimal duct diameter. However, CLP might not affect the nasolacrimal duct length.Öğe Five-year change of panoramic radiomorphometric indices and fractal dimension values in type 2 diabetes patients(Springer, 2024) Dedeoglu, Numan; Eser, Gozde; Ozen, Duygu Celik; Altun, OguzhanObjectivesDiabetes mellitus is a chronic disease characterized by dysregulation of glucose metabolism, with characteristic long-term complications accompanied by changes in bone quality. The purpose of this study is to compare the results with a control group by performing radiomorphometric analyses on panoramic radiographs obtained 5 years apart to examine changes in the mandibular bone cortex and microstructures of type 2 diabetes mellitus (T2DM) patients.MethodsTwo panoramic radiographs that were taken 5 years (mean 5.26 +/- 0.134) apart from 52 patients with T2DM (n:26) and a control group (n:26) were used. A total of 104 images were evaluated. Analyses were done from the condyle (FD1), angulus (FD2), distal second premolar apex (FD3), and anterior to the mental foramen (FD4) for fractal dimension (FD) in the mandible. Symphysis index (SI), anterior index (AI), molar index (MI), posterior index (PI), and panoramic mandibular index (PMI) measurements were taken for cortical analysis. Three-way ANOVA, three-way robust ANOVA, two-way ANOVA, and two-way robust ANOVA tests were used for statistical analysis (p < 0.05).ResultsAfter a 5-year period, there was a significant decrease in all FD measures of the mandible in both T2DM and control groups (p < 0.05). This resulted in a statistical difference in the main effect of time. After a 5-year period, no significant difference in mandibular cortical measures was identified between the T2DM and control groups (p > 0.05).ConclusionAccording to panoramic radiography, the mandibular trabecular structure deteriorated after 5 years, whereas cortical values remained the same. It concluded that T2DM had no effect on these results.Öğe In-vitro Diagnosis of Approximal Caries in Teeth Periapical Radiography with Different Exposure Parameters(Pera Yayincilik Hizmetleri, 2023) Altun, Oguzhan; Ozen, Duygu Celik; Dedeoglu, Numan; Duman, Suayip Burak; Eser, Gozde; Topaloglu, Edanur; Ozemre, BegumObjective: The aim of this study was to evaluate periapical radiographs of enamel caries, dentin caries, and deep caries with exposed pulp and intact teeth obtained in vitro using photo-stimulated phosphor plates (PSP) under different exposure parameters. Methods: 3 non-carious extracted molars were selected. The obtained molars were embedded in the wax created from pink wax by ensuring approximal contact and a base was created. 14 different imaging protocols were used with 60 kVp, 4 mA 0.02-0.1 second and 70 kVp 7 mA, 0.25-1.25 second exposure parameters. Intact teeth were imaged with these various imaging protocols. Artificial cavities were then created for enamel caries, dentin caries and deep caries with exposed pulp and imaged according to the same protocols. The images were evaluated by 3 clinicians who were blind to the exposure protocol and caries status. Inter-observer agreement with actual situations was examined with Kappa statistics. Results: In the low-dose group, the kappa values of observer 1, observer 2, and observer 3 were 0.905, 0.952, 0.952, respectively. The kappa values of observer 1, observer 2, and observer 3 in the ultralow-dose group were 0.833, 1, 1, and the kappa values of observer 1, observer 2, and observer 3 in the high-dose group were 1, 1, 0.833, respectively. The results obtained in all groups showed a statistically significant-excellent agreement (p<0.001). Conclusion: Approximal caries can be diagnosed with intraoral radiography obtained with low radiation doses with PSP in dentistry. Thus, patients could be exposed to less ionizing radiation.Öğe Investigation of the effects of storage time on the dimensional accuracy of impression materials using cone beam computed tomography(Korean Acad Prosthodontics, 2016) Alkurt, Murat; Duymus, Zeynep Yesil; Dedeoglu, NumanPURPOSE. The storage conditions of impressions affect the dimensional accuracy of the impression materials. The aim of the study was to assess the effects of storage time on dimensional accuracy of five different impression materials by cone beam computed tomography (CBCT). MATERIALS AND METHODS. Polyether (Impregum), hydrocolloid (Hydrogum and Alginoplast), and silicone (Zetaflow and Honigum) impression materials were used for impressions taken from an acrylic master model. The impressions were poured and subjected to four different storage times: immediate use, and 1, 3, and 5 days of storage. Line 1 (between right and left first molar mesiobuccal cusp tips) and Line 2 (between right and left canine tips) were measured on a CBCT scanned model, and time dependent mean differences were analyzed by two-way univariate and Duncan's test (alpha=.05). RESULTS. For Line 1, the total mean difference of Impregum and Hydrogum were statistically different from Alginoplast (P<.05), while Zetaflow and Honigum had smaller discrepancies. Alginoplast resulted in more difference than the other impressions (P<.05). For Line 2, the total mean difference of Impregum was statistically different from the other impressions. Significant differences were observed in Line 1 and Line 2 for the different storage periods (P<.05). CONCLUSION. The dimensional accuracy of impression material is clinically acceptable if the impression material is stored in suitable conditions.Öğe 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 Cleft Lip Palate and Prognathic Mandibles in Relation to Mandibular Canal Course(Lippincott Williams & Wilkins, 2021) Sancar, Bahadir; Dedeoglu, NumanIntroduction: This study aimed to evaluate the mandibular canal course in individuals with cleft lip palate (CLP) and mandibular prognathism in terms of the sagittal split-ramus osteotomy using cone-beam computed tomography. Materials and Methods: Individuals with CLP older than 16 years of age and planned to undergo Le fort I + SSR osteotomies and those with class III occlusion planned to undergo Le fort I + SSR osteotomies were included. The measurements on the cleft side of CLP patients were compared with both their noncleft sides and those with class III occlusion. The course of the inferior alveolar nerve and its position in the mandible were evaluated starting from the mandibular foramen, the first entrance to the mandible, to the mental foramen, the exit from the mandible. Results: The distance between the mandibular canal and the buccal surface of the mandible (B3) on the plane tangent to the distal of the mandibular first molar and perpendicular to the occlusal plane was found to be greater in individuals with CLP (P = 0.011). Buccal cortex thickness (C4) at the level of the mandibular canal on the plane tangent to the distal of the mandibular second molar and perpendicular to the occlusal plane was found to be lower in individuals with CLP (P = 0.021). Conclusions: The buccal cortex thickness of the mandible corpus and the distance of the mandibular canal to the buccal surface is different in patients with CLP compared to class III individuals' posterior to the mandible. Surgeons should take these differences into consideration during mandibular osteotomy.Öğe Prevalence of Bifid Mandibular Canals in Turkish Eastern Anatolia Population: A Retrospective Study(Premchand Shantidevi Research Foundation, 2020) Dedeoglu, Numan; Duman, Suayip BurakIntroduction: Mandibular canal is between mandibular foramen and mental foramen and it includes inferior alveolar neurovascular bundle. For surgical procedures on mandible such as impacted tooth extraction, dental implant surgery, and sagittal split ramus osteotomy, assesing variations and anatomic location of the mandibular canal is very important. Aim: The aim of this study was to assess bifid mandibular canals by analysing Cone Beam Computed Tomography (CBCT) images in Turkish population of eastern Anatolia region. Materials and Methods: A retrospective study was conducted in which prevalance of bifid mandibular canal was assessed in 4 groups; group with third molar {group A: impacted (A1) and erupted (A2)} and without third molar {group B: only third molars missing (B1) and posterior edentulous area (B2)} with types and sub-types. Descriptive analysis and chi-square test were used for statistical analyses. Results: Of the 501 CBCT images assessed, bifid mandibular canal was found in 210 (41.9%). No significant difference was found between genders (p>0.05). The frequency of bifid mandibular canal was found as 47.3% in group A (45.8% in group A1 and 48.9% in group A2), and as 35.1% in group B (41.7% in group B1 and 31.2% in group B2). In patients who had third molars, bifid mandibular canal was seen more when compared with those who did not (p<0.05) had. Among bifid mandibular canals, retromolar canals were seen the most. Conclusion: The prevalence of bifid mandibular canal analysed by CBCT was found to be 41.9%. No difference was found between genders in terms of prevalence. CBCT is significantly useful tool before the surgical procedures especially removing third molars.Öğe Radiographic evaluation of third-molar development in relation to the chronological age of Turkish children in the southwest eastern Anatolia region(Elsevier Ireland Ltd, 2013) Karatas, Orhan H.; Ozturk, Firat; Dedeoglu, Numan; Colak, Cemil; Altun, OguzhanTo study the chronological age of third-molar mineralisation of Turkish children from the southwest Eastern Anatolia region, the Demirjian staging method was used to determine the stage of the mineralisation of four third molars (18, 28, 38 and 48) and to compare third-molar development by sex and age with the results of previous studies. The study comprised 832 Turkish children from the southwest Eastern Anatolia region aged 6-16 years based on radiological evidence from digital orthopantomograms. The mean age of the 832 patients was 11.03 +/- 1.98 years, with 424 males (mean age, 10.97 +/- 1.97) and 408 females (mean age, 11.09 +/- 2.00). The orthopantomograms were scored by two observers. The Wilcoxon matched-pairs signed-rank test used to assess intra-and inter-observer assessment revealed strong agreement between both observers' measurements. Statistical analysis of the association between sex and age was performed with the Mann-Whitney U-test and the Wilcoxon test. Regression analysis was performed to obtain regression formulae for calculating the dental and the chronological age. The statistical analysis showed a strong correlation between age and third-molar development in males (R-2 = 0.61) and females (R-2 = 0.63). New equations (age = 7.49 + 0.69, development stage (DS) 38 + 0.70, DS18) were derived for estimation of the chronological age. The results showed that there was no significant difference in mineralisation between 18 and 28 and 38 and 48 in males or females. For both sexes, the dental age was lower than the chronological age. Males reached the developmental stages earlier than females. In the whole population, the boys' and the girls' dental ages were 0.84 years and 0.16 years earlier, respectively, than their chronological ages. The use of third-molar teeth as a developmental marker is suitable, particularly when comparing the obtained standard deviation with other skeletal-age calculation techniques. (C) 2013 Elsevier Ireland Ltd. All rights reserved.Öğe RETROSPECTIVELY COMPARISON OF NASAL SEPTUM AND MAXILLARY SINUS RADIOLOGICAL FINDINGS IN CONE BEAM COMPUTED TOMOGRAPHY AND PANORAMIC RADIOGRAPHY(Nobel Ilac, 2021) Dedeoglu, Numan; Arikan, Busra; Duman, Suayip BurakObjective: The aim. of this study is to compare panoramic radiography and cone beam computed tomography (CBCT) for visibility of maxillary sinus retention cyst, septa, Haller cell and nasal septum deviation. Material and Method: A total of 588 maxillary sinus and 294 nasal septum 4294 patients with both panoramic radiography and CBCT images were evaluated. The presence of Haller cell, maxillary sinus septa, retention cyst and nasal septum deviation were evaluated first in CBCT images and then panoramic radiography and recorded. With the data obtained, the two methods were compared by using Chi-square test. Results: Statistically significant difference was foundwhen the frequency of Haller cell, maxillary sinus septa and nasal septum deviation seen on panoramic radiography was compared with CBCT (p<0.05). No statistical difference was found when the frequency of retention cyst seen on panoramic radiography was compared with CBCT (p>0.05). Conclusion: While panoramic radiography was found to he insufficient in the radiological evaluation of Haller cell, maxillary sinus septum and nasal septal deviation, it was ound to he close to CBCT in the evaluation of retention cyst.Öğe Sphenoid sinus agenesis and sella turcica hypoplasia: very rare cases of two brothers with Hamamy syndrome(Springer France, 2020) Duman, Suayip Burak; Dedeoglu, Numan; Arikan, Busra; Altun, OguzhanHamamy syndrome (HS) is an autosomal recessive syndrome with a genetic origin that is very rarely observed. The syndrome with craniofacial dysmorphisms, including midface prominence, severe telecanthus, sparse lateral eyebrows, protruding ears, fronto-nasal abnormalities, lacrimal-salivary apparatus agenesis, thin upper vermillion border, myopia, mental retardation, sensorineural hearing impairment, congenital heart anomalies with intraventricular conduction delay, hypochromic microcytic anaemia and skeletal abnormalities of the long bones with recurrent fractures. In this paper, we report a case of two brothers diagnosed with HS at the ages of 25 and 18 years, visited out clinic at different times due to dental reasons. In the radiological examinations, it was observed that both brothers have sphenoid sinuses agenesia, and their sella turcica were smaller than normal. HS may be observed very rarely, and it should be kept in mind that, in addition to various symptoms, it may also cause sphenoid sinus agenesis and sella turcica hypoplasia as shown for the first time in this case report.Öğe Ultrasonographic evaluation of the masseter muscle in patients with temporomandibular joint degeneration(Korean Acad Oral & Maxillofacial Radiology, 2023) Arikan, Busra; Dedeoglu, Numan; Keskinruzgar, AydinPurpose: Sonographic elastography can be used to evaluate the hardness of muscle tissue through the application of compression. Strain elastography gauges hardness through the comparison of echo sets before and after compression. This study utilized ultrasonography to measure the thickness and hardness of the masseter muscle in individuals with temporomandibular joint (TMJ) osteoarthritis.Materials and Methods: This study included 40 patients who presented with joint pain and were diagnosed with TMJ osteoarthritis via diagnostic cone-beam computed tomography, along with 40 healthy individuals. The thickness and hardness of each individual's masseter muscle were evaluated both at rest and at maximum bite using ultrasonography. The Mann-Whitney U test and the chi-square test were employed for statistical analysis, with the significance level set at P<0.05.Results: The mean thickness of the resting masseter muscle was 0.91 cm in patients with osteoarthritis, versus 1.00 cm in healthy individuals. The mean thickness of the masseter muscle at maximum bite was 1.28 cm in osteoarthritis patients and 1.36 cm in healthy individuals. The mean masseter elasticity index ratio at maximum bite was 4.51 in patients with osteoarthritis and 3.16 in healthy controls. Significant differences were observed between patients with osteoarthritis and healthy controls in both the masseter muscle thickness and the masseter elasticity index ratio, at rest and at maximum bite (P<0.05).Conclusion: The thickness of the masseter muscle in patients with TMJ osteoarthritis was less than that in healthy controls. Additionally, the hardness of the masseter muscle was greater in patients with TMJ osteoarthritis.Öğe Unusual bifid crista galli in a patient with cleft lip and palate(Springer, 2017) Dedeoglu, Numan; Altun, Oguzhan; Kucuk, Eyup Burak; Altindis, Sedat; Hatunoglu, ErdemOne of the most common craniofacial malformations observed in newborn babies is cleft lip and palate (CLP). This syndrome presents with some anatomic variations. The aim of this study was to understand an anatomic variation of the crista galli that had not been reported previously in patients with CLP. A 17-year-old boy with CLP was referred to an orthodontic clinic for cone-beam computed tomography (CBCT) imaging before treatment. Axial and coronal sections and three-dimensional images showed that the crista galli had bifid heads that were attached to each other. Incomplete ossification had resulted in a bifid crista galli and the appearance of a suture in the anterior coronal section of the CBCT images. This anatomic variation could allow penetration of the anterior fossa during endoscopic surgery, which could be dangerous for the patient.
