Search

This study aims to compare the radiopacities of computer-aided design/computer-aided manufacture (CAD/CAM) blocks and the adhesive cements used for their bonding. 1 ± 0.2 mm thick specimens were obtained from six different CAD/CAM blocks (Incoris TZI, IPS e.max CAD, Vita Mark II, Cerasmart, Vita Enamic, and Vita Suprinity), four different adhesive resin cements (Panavia F2.0, Variolink Esthetic DC, RelyX Unicem Aplicap, G-CEM LinkAce), and a tooth. Radiographs of the specimens from each group, a tooth section, and an aluminum (Al) step-wedge were acquired. The radiopacity values of the materials were calculated as equivalents of Al thickness using the gray level values. The data were statistically analyzed using one-way ANOVA and Tukey HSD tests. All the materials except Cerasmart and Vita Enamic had significantly higher radiopacity values than dentin (p < 0.05). Of the assessed blocks, the highest radiopacity value was observed in Incoris TZI, and the lowest radiopacity value was observed in Vita Enamic. Variolink Esthetic DC and RelyX Unicem Aplicap showed significantly higher radiopacity (p < 0.05) than the other adhesive cements, including enamel and dentin. In this study, the majority of the CAD/CAM materials and all the adhesive resin cements were found to have sufficient radiopacity for prosthetic restorations according to the criteria set by the International Organization for Standardization (ISO). From a clinical and biological point of view, materials should be chosen according to their radiopacity and other properties, such as biocompatibility and esthetics. If the selected restorative CAD/CAM blocks have a radiopacity value less than or equal to dentin, cements with higher radiopacity values are recommended to facilitate radiological diagnoses for periphery and interface of restorations.

The purpose of this study was to describe a case and to review the diameters, symptoms, locations, and treatment methods for vascular malformations (VMs) with phleboliths. Our case report is probably the first to mention this observation because of sizes and large number of phleboliths in buccal region. A 26-year-old male patient was referred to Ordu University, Faculty of Dentistry, Department of Oral and Maxillofacial Surgery for the evaluation and management of a painless tender swelling in the left buccal region. Clinically, a bluish mucosal lesion of the posterior region of the left buccal mucosa and lip is apparent. Panoramic radiography and CT were obtained for radiographical examinations. Multiple giant phleboliths with the largest dimension of 32 mm were seen in this region. Left maxillary first molar teeth extraction was indicated. An aspiration was performed and revealed that there is a risk of severe hemorrhage. The patient did not want to take MRI and stated that he only wanted to have dental treatment. Therefore, it was decided that the maxillary first molar should be retained in the region and endodontic treatment should be done, if necessary. The clinic of phlebolith patients is painless swelling and can reach up to 6 cm. The localization is not specific but is found in the masseter and parotid regions generally. Treatment may be invasive or non-invasive depending on, location, accessibility, depth of invasion, age, cosmetic issues, and risk of severe hemorrhage, as with the current case.

ERZURUMLU, ZERRIN UNAL/0000-0002-8693-1206; Guler, Cigdem/0000-0002-2581-9050 WOS: 000479834400001 PubMed: 31368622 The aim of this article is to compare the effects of 1.5 T and 3 T MRI on microleakage of amalgam restorations. A total of 90 extracted molar teeth were used in this study. Amalgam was used to restore standard Class V preparations (5 x 3 x 2 mm). Following the restoration, the teeth were divided into three groups according to magnetic resonance imaging (MRI) protocol (Group I: Control, Group II: 1.5 T MRI, and Group III: 3 T MRI). A total of 6,000 thermal cycles at 5 degrees C-55 degrees C were applied on all samples. Microleakage values were measured in millimeters using the ImageJ program. Microleakage values were higher in the gingival region compared to the occlusal region in all groups and the differences were statistically significant (p < .05). Microleakage values were not statistically different among the groups in the occlusal region (p > .05), while there were statistically significant differences among the groups with respect to microleakage values in the gingival region (p < .01). The highest mean microleakage amount in the gingival region was measured in Group III (1.192 +/- 0.941 mm). This was followed by Group II (0.519 +/- 0.813 mm) and Group I (0.347 +/- 0.726 mm), respectively. Within the limitations of this in vitro study, we observed that higher microleakage values in amalgam restored teeth in which were exposed to MRI procedure. We also found that the teeth exposed to the stronger magnetic field showed higher microleakage amount.

ERZURUMLU, ZERRIN UNAL/0000-0002-8693-1206 WOS: 000498952300001 PubMed: 31729769 Background The articular eminence of the temporomandibular joint is an anatomical structure exposed to functional loads resulting from masticatory forces. Tooth loss may change the biomechanics of the masticator system, and the articular eminence can be affected by this change. Objective The aim of this study is to examine the relationship between the edentulousness and the articular eminence inclination of the temporomandibular joint. Methods The articular eminence inclination was measured in panoramic radiographs in the right and left temporomandibular joint on a total of 100 patients (50 dentate and 50 edentulous). The articular eminence inclination of dentate and edentulous patients was compared, as well as the influence of gender and duration of edentulousness. Results The mean articular eminence inclination value in the dentate group (42.6 +/- 4.3(0)) was higher than that of the edentulous group (35.1 +/- 4.7(0), P < .001). Although there was no significant difference between males and females in the dentate group with regard to articular eminence inclination (42.0 +/- 4.7(0) and 42.9 +/- 4.1(0), respectively, P = .373), in the edentulous group, males had higher values as compared to females (37.1 +/- 4.7(0) and 34.2 +/- 4.5(0), respectively, P = .003). Finally, the duration of edentulousness and the degrees of articular eminence inclination values did not show positive correlations (P = .782). Conclusion According to the results of this study, we found that edentulous patients had lower articular eminence inclination than dentate patients, and it was more prominent in female than male patients.

ERZURUMLU, ZERRIN UNAL/0000-0002-8693-1206 WOS: 000321737900026 PubMed: 23849377 Rhinoliths are calcified masses in the nasal cavity caused by the deposition of nasal, lacrimal, and inflammatory mineral salts by accretion around an endogenous or exogenous nidus. Rhinoliths can be seen as incidental findings on panoramic radiography, although they typically appear blurred due to remaining outside the focus. Therefore, rhinoliths may be difficult to recognize; this difficulty can lead to misdiagnosis. Computed tomography (CT)/cone beam CT (CBCT) scans are generally necessary to define the precise location and to make a differential diagnosis. This article describes radiologic features of five cases of rhinoliths that were detected incidentally on panoramic radiographs. CT or CBCT images were obtained before removing the rhinoliths.

ERZURUMLU, ZERRIN UNAL/0000-0002-8693-1206 WOS: 000420054100005 PubMed: 26339510 Fibrous dysplasia is a benign fibroosseous bone dysplasia that can involve single (monostotic) or multiple (polyostotic) bones. Monostotic formis more frequent in the jaws. It is termed as craniofacial fibrous dysplasia, when it involves, though rarely, adjacent craniofacial bones. A 16-year-old girl consulted for a painless swelling in the right posterior mandible for two years. Panoramic radiography revealed ground-glass ill-defined lesions in the three different regions of the maxilla and mandible. Axial CT scan ( bone window) showed multiple lesions involving skull base and facial bones. Despite lesions in the skull base, the patient had no abnormal neurological findings. The lesion was diagnosed as fibrous dysplasia based on radiological and histopathological examination. In this paper, CT findings and differential diagnosis of CFD are discussed. CT is a useful imaging technique for CFD cases.