A Comparison between 2D and 3D Images to Study Maxillary and Mandibular Widths: A Pilot Study  

作　　者：Ilaf Al Mawaldi Sawsan Tabbaa C. Brian Preston Mayssa Salti 

机构地区：[1]Department of Orthodontics, School of Dental Medicine, SUNY at Buffalo, New York, USA [2]School of Orthodontics, Brooks Rehabilitation College of Healthcare, Jacksonville University, Florida, USA [3]Department of Orthodontics, School of Dental Medicine, SUNY at Buffalo, New York, USA [4]Post-Graduate Program, Department of Orthodontics, School of Dental Medicine, SUNY at Buffalo, New York, USA

出　　处：《Open Journal of Stomatology》2017年第3期186-196,共11页口腔学期刊（英文）

摘　　要：The objective of this study is to compare the transverse dimensions of the jaws, obtained from traditional posteroanterior (PA) cephalometric radiographs, and with the similar respective measurements obtained by means of cone beam computed tomography (CBCT). Data of twelve subjects were selected from the clinical records of Orthodontic Department. All of the subjects had their permanent teeth in occlusion and had good quality regular (2D), and CBCT (3D) images as part of their initial records. Subjects were divided to a posterior cross-bite and non-cross bite groups. The ratio of the maxillary, to mandibular transverse widths was calculated for the sample. In subjects without dental cross-bites the average ratio of the maxillary, to mandibular jaw widths was 0.75 on the standard radiographs and 1.04 on the CBCT scans. In subjects with dental cross-bites the average ratio of these widths was 0.70 on the standard radiographs and 0.9 on the CBCT scans. The ratios of the maxillary, to mandibular widths differ when obtained from conventional cephalometric radiographs as compared to the respective ratios obtained from CBCT scans. Maxillary, to mandibular width ratio is in the order of 1:1 as determined by means of CBCT scans.The objective of this study is to compare the transverse dimensions of the jaws, obtained from traditional posteroanterior (PA) cephalometric radiographs, and with the similar respective measurements obtained by means of cone beam computed tomography (CBCT). Data of twelve subjects were selected from the clinical records of Orthodontic Department. All of the subjects had their permanent teeth in occlusion and had good quality regular (2D), and CBCT (3D) images as part of their initial records. Subjects were divided to a posterior cross-bite and non-cross bite groups. The ratio of the maxillary, to mandibular transverse widths was calculated for the sample. In subjects without dental cross-bites the average ratio of the maxillary, to mandibular jaw widths was 0.75 on the standard radiographs and 1.04 on the CBCT scans. In subjects with dental cross-bites the average ratio of these widths was 0.70 on the standard radiographs and 0.9 on the CBCT scans. The ratios of the maxillary, to mandibular widths differ when obtained from conventional cephalometric radiographs as compared to the respective ratios obtained from CBCT scans. Maxillary, to mandibular width ratio is in the order of 1:1 as determined by means of CBCT scans.

关 键 词：Posteroanterior CEPHALOMETRIC (PA) RADIOGRAPH CBCT 2D 3D Transverse JAW Measurements Posterior Cross-Bite 

分 类 号：R73[医药卫生—肿瘤]