Aim:To assess the proximity between the roots of maxillary molars and Maxillary Sinus Floor 'MSF' using CBCT in a sample from the Egyptian population.
Materials and Methods: Eighty seven CBCT scans of adult Egyptians (29 males and 58 females) involving 135 maxillary 1 st molars, 168 maxillary 2 nd molars and 107 maxillary 3 rd molars, were collected from patients' data base of Planmeca Promax 3D Mid CBCT machine available at the Department of Oral &Maxillofacial Radiology, Faculty of Dentistry, Cairo University. The vertical relation between MSF and examined teeth roots was assessed on cross sectional CBCT images based on Jung classification 2009Results: In all mesio-buccal "MB', disto-buccal 'DB'& palatal 'P' roots of the examined teeth, the 1 st molars showed the highest prevalence of class (0) in the 3 roots, while the 2 nd molars showed the highest prevalence of class (3) among both MB & DB roots, and the highest prevalence of class (2) among P roots, finally 3 rd molars showed the highest prevalence of class (1) among DB roots, and the highest prevalence of class (3) among P roots. There was a significant inverse correlation between age and vertical relationship classes of only the first maxillary molars roots. Males showed higher prevalence of Class (2) and Class (3) while females showed higher prevalence of Class (0) and Class (1) in the 3 rd molars.
Conclusion:In the investigated Egyptian subjects, maxillary 1 st molars' roots are the least close to the MSF compared to the other molars roots, while buccal roots of maxillary 2 nd molars are highly anticipated for MSF invagination. The lower the age is, the closer are the maxillary 1 st molar roots to the MSF, and males' maxillary 3 rd molars are more frequently approximating MSF than females.
PurposeThis study aimed to investigate the effect of changing the kilovoltage peak (kVp) on the radiographic assessment of dental caries.Materials and MethodsSeventy-five extracted posterior teeth with proximal caries or apparently sound proximal surfaces were radiographed with conventional E-speed films and a photostimulable phosphor system using 60 kVp and 70 kVp for the caries assessment. The images were evaluated by three oral radiologists and compared with the results of the stereomicroscope analysis.ResultsNo statistically significant difference was found between 60 kVp and 70 kVp for the caries detection, determination of caries extension into dentin, and caries severity in either the conventional or the digital images. Good to very good inter-observer and intra-observer agreements were found for both kilovoltage values on the conventional and digital images.ConclusionChanging the kilovoltage between 60 kVp and 70 kVp had no obvious effect on the detection of proximal caries or determination of its extension or severity.
Objective:The goal of this study was to use cone-beam computed tomography (CBCT) images to analyze the association of maxillary sinus mucosal lining thickness (MT) with various dental problems. Material and method: CBCT scans of 159 cases (92 females and 67 males) with a mean age of (38.30± 13.69) years were collected from the patient's database of Oral and
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