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    Evaluation of localisation of mandibular foramen in patients with mandibular third molar teeth using cone-beam computed tomography
    (Via Medica, 2018) Altun, O.; Miloglu, O.; Dedeoglu, N.; Duman, S. B.; Torenek, K.
    Background: It is important to know the correct anatomical location of the mandibular foramen to obtain successful anaesthesia of inferior alveolar nerve and to prevent injury to the mandibular vessels and nerve, during a variety of oral and maxillofacial surgical procedures. The aim of this study is to evaluate localisation of the mandibular foramen in patients with the third molars using cone-beam computed tomography (CBCT). Materials and methods: Cone-beam computed tomography was used to determine the location of the mandibular foramen in 67 patients (totally 99 sides) with unilateral or bilateral impacted mandibular third molars. Results: The distance from the posterior border of the mandibular ramus to mandibular foramen did not differ significantly among the other angulations. But the difference between vertical and horizontal angulation of the impacted mandibular third molars according to 'fd' values (the shortest distance between mandibular foramen and the posterior border of mandibular ramus) was found to be statistically significant (p < 0.05). Conclusions: The present study provides new information to the literature concerning relationship between the location of the mandibular foramen and the mandibular third molars.
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    Evaluation of maxillary sinus anatomical variations and pathologies in elderly, young, posterior dentate and edentulous patient groups with cone-beam computed tomography
    (Via Medica, 2019) Dedeoglu, N.; Altun, O.
    Background: The aim of this study was to evaluate the frequency of maxillary sinus pathologies and anatomic variations in elderly and edentulous patients by using cone-beam computed tomography (CBCT). Materials and methods: The study included elderly and young patient groups. The elderly group involved posterior edentulous and dentate patients. CBCT images were assessed, and the presence of any pathological findings, septa, accessory maxillary ostium, and Haller cell in each maxillary sinus were recorded according to the groups. Chi-square test was used to analyse the intergroup differences (p < 0.05). Results: There was no statistically difference between the young and elderly groups regarding the presence of a pathology (p = 0.077) and septa (p = 0.37), whereas accessory ostium (p = 0.009) was more common and Haller cell (p = 0.000) was less common in the elderly group when compared to the young group. There was no significant difference between the edentulous and dentate group regarding the presence of a pathology (p = 0.39), septation (p = 0.69) and Haller cell (p = 0.75); accessory ostium rate was found to be increased (p = 0,015) in edentulous patients. Conclusions: It was observed that the frequency of accessory maxillary ostium was increased in elderly, especially in edentulism. And the frequency of Haller cell was found to be decreased in elderly patients.
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    Evaluation of the anatomical variation in the nasal cavity and paranasal sinuses of patients with cleft lip and palate using cone beam computed tomography
    (Comenius Univ, 2016) Dedeoglu, N.; Altun, O.; Kucuk, E. B.; Altindis, S.; Hatunoglu, E.
    OBJECTIVE: The aim of this study was to evaluate the frequency of anatomical variation in nasal cavity and paranasal sinuses by comparing a unilateral cleft lip and palate (UCLP) group with a non-syndromic control group using cone beam computed tomography (CBCT). SUBJECTS AND METHODS: This study included 24 UCLP patients in the UCLP group and 24 non-syndromic patients in the control group. Coronal CBCT images were taken in all patients and were evaluated for anatomical variation. The measurements obtained in this study were analysed using chi-square and Fisher's exact tests to compare the two groups statistically. RESULTS: In the UCLP group, there were statistically lower frequencies of pterygoid process pneumatisation (p<0.05), higher wing pneumatisation (p<0.05), and sphenoid sinus over pneumatisation (p<0.05), and statistically higher frequencies of anterior nasal septa] deviation (p<0.05) compared to the control group. CONCLUSION: A higher incidence of anterior nasal septal deviation was found in UCLP patients compared to the patients in the control group. It is likely that for this reason, UCLP patients might be predisposed to sinusitis. In UCLP patients, the incidence of neurovascular structures in the sphenoid sinus was lower than that in non-syndromic control patients (Tab. 1, Fig. 6, Ref. 33). Text in PDF www.elis.sk.
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    Retrospective Morphometric Analysis of the Infraorbital Foramen with Cone Beam Computed Tomography
    (Medknow Publications & Media Pvt Ltd, 2017) Dagistan, S.; Miloglu, O.; Altun, O.; Umar, E. K.
    Objective: The aim of our study is to examine the morphometric characteristics of the infraorbital foramen (IOF) and its anatomic localization by using cone-beam computerized tomography (CBCT). Materials and Methods: In our study, the anatomic characteristics of the IOF were identified by studying retrospectively the CBCT images of one hundred twenty-five (125) patients. These characteristics were assessed statistically in terms of age, gender, and right-left side. Results: In our study, 42% of them had IOF in circular form and 58% in oval form. Of them 66.90% of those in oval form were in oblique direction, 28.30% of them were in vertical direction, and 4.80% of them were in horizontal direction. The mean vertical diameter of the IOF was found as 3.71 +/- 0.61 mm and its mean horizontal diameter was found as 3.17 +/- 0.56 mm. The mean distance of IOF to midline were measured as 25.10 +/- 2.17 mm, distance to upper edge of the orbita was measured as 41.91 +/- 2.77 mm, distance to infraorbital edge was measured as 5.63 +/- 1.77 mm, distance to the lateral nasal wall was measured as 9.32 +/- 2.68 mm, distance to spina nasalis anterior was measured as 17.97 +/- 3.99 mm, thickness of the soft tissue on the foramen was measured as 11.52 +/- 2.40 mm, and distance between the right and the left IOF was measured as 50.20 +/- 3.90 mm. Accessory foramen was found in 56.60% ratio. Conclusion: This study reveals that CBCT may guide for local anesthesia applications and for other invasive procedures in order to prevent the damage of the neurovascular structures during maxillofacial surgery by identifying the distances of anatomic points such as IOF having surgically importance.