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cephalometric norms for a sample of Emirates adults

Open Journal of Stomatology 2011年第3期1卷 75-83页

作者： Huda M. Abu-Tayyem Amna H. Alshamsi Sayed Hafez Eman Mohie ElDin 不详

Introduction—European-American norms are still used in the orthodontic treatment of Emirates patients despite the different ethnic backgrounds of the Emirates. The purpose of this study was to formulate cephalometric norms for lateral cephalometric mea-surements of Emirates adults and to study gender differences. Methods—Lateral cephalometric radio-graphs of 176 Emirates adults, 91 males and 85 fe-males, were selected according to the following crite-ria;an age range between 19 to 25 years, esthetically pleasing and harmonious faces with balanced and acceptable profiles and occlusions, normal skeletal and dental relationship, all permanent teeth present, and no history of orthodontic treatment or facial trauma. The mean values and standard deviations of 91 angular and 21 linear cephalometric variables were calculated using the Dolphin version 10.5 soft-ware package. The resulting norms for Emirates male and female groups were compared using a student t-test. Results—Several statistically significant gender differences were noticeable. Skeletally, Emirates males showed significantly greater (p < 0.001) total, anterior, and posterior cranial base lengths as well as longer facial heights, greater SGn-FH (°), ANS Xi PM (°),and FH/MP (°) angles than females. In addition, Emirates males had significantly greater (p < 0.001) Co-A (mm), Co-Gn (mm), and significantly greater (p < 0.05) Pog-N vert (mm) than females. Dentally, Emirates males had significantly greater (p < 0.05) UI-SN (°) and U1-NA (°), U1-NA (mm), and L1-NB (mm) (p < 0.001) than females. For soft tissue measurements there were significant gender differences (p < 0.001) for all angular and linear measurements except for lower lip to E-plane and nose prominence measurements which have no significant gender difference. Emirates males revealed greater measurements than females except for soft tissue con-vexity, Z-angle, and both upper and lower lips pro-trusion which were significantly greater in Emirates females.

关键词： Emirates Norms cephalometric Norms

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cephalometric Assessment of Sagittal Relationship between Maxilla and Mandible in Three Skeletofacial Profiles

Cephalometric Assessment of Sagittal Relationship between Ma...

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Beijing International Conference on Orthodontics

作者： Zhang ying Deng Yan Dept.of Stomatology China Medical University

＜正＞In the radiographic cephalometric analysis,accurate measuring the sagittal of relationship of the maxilla to the mandible is important to diagnosis,treatment and *** scholars evaluated the relationship in differ... 详细信息

关键词： cephalometric skeletal profile wits appraisal

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Research and Application on Automatic cephalometric Measurement and Facial Prediction System

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High Technology Letters 1998年第2期4卷 44-47页

作者：徐常胜

In this paper, a practical automatic cephalometric measurement and facial prediction system is built by using adaptive filtering and edge detecting techniques and some artificial intelligent approaches. The system not only realizes the automation from landmark location to parameter measurement on cephalogram, but also makes the diagnostic design of preoperation of orthognathic surgery quantitive. Compared with the manual prediction, it provides a new method to make the diagnosis and treatment for deto maxillofacial deformities more accurate. It is more significant to clinical application and scientific research.

关键词： Filtering Edge detection cephalometric measurement Facial prediction

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STEINER cephalometric NORMS FOR SHANGHAI ADULT

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Medical Bulletin of Shanghai Jiaotong University 1991年第2期14卷 94-98页

作者：彭适生 Department of Orthodontics School of Stomatology SSMU Shanghai

In this paper, 60 samples (30 male and 30 female) with normal occlusion in permanent dentition were selected. 60 lateral radiographic cephalograms were taken. By mean of Steiner analysis, means, standard deviations were calculated. Acceptable compromises for individual use were established. Comparison these data with Beijing and Korean were made. Thus the characteristics of craniofacial morphology and denture patterns of Shanghai adult were observed.

关键词： Steiner analysis cephalometric acceptable compromises

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Application of cephalometric Analysis To Surgical Treatment of Dentofacial Deformities

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Journal of Medical Colleges of PLA(China) 1989年第2期4卷 158-162页

作者：司徒镇强希杨顾晓明 Department of Oral and Maxillofacial Surgery Stomatolocdical HospitalFourth Military Medical UniversityXi'an

In view of orthognathic surgery,on the basis of the ccphalometric data of the youths innorth-west China,the most common 29 parameters were chosen,including angles,linear measureand *** analysis,they were divided into four groups:general profile feature,maxilla andorbital-zygomatic regio,mandible and *** kind of analysis can be usecd for clinicaldiagnosis and for detemining the nature,position and degree of the *** is espceially effec-five in the designing of operation and prediction of the result of the surgery.

关键词： dentofacial deformity cephalometric measurement osteotomy and correction

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Tooth Size Arch Length Discrepancies and cephalometric Analysis in Class 1 Malocclusion

Tooth Size Arch Length Discrepancies and Cephalometric Analy...

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作者： A.MOHAMED YUNUS 重庆医科大学

学位级别：硕士

OBJECTIVE: The purpose of this study was to measure,analysis and compare the tooth size and arch length discrepancy of class 1 malocclusion as determined by bolton and carey for the chinese and indian （dravidian） ethnicity between the age group of 13 to 18 respectively. MATERIALS AND METHODS: In this materialistic study with theretrospective analysis, total of 80 patients cast ,40 cast （20 males and 20 females） of indian and （20 males and 20 females） of chinese were taken and measured the mesiodistal width of both upper and lower jaws and cephalometric analysis were done for the same , the indian record were taken at Department of orthodontics meenakshi ammal dental college chennai india and the chinese were taken in Department of orthodontics chongqing stomatology hospital affliated to chongqing medical university. Chongqing, China. RESULTS: In this nine parameters of cephalometric analysis seven parameters came out to be significant both in males and females namely SNB, SN-POg, MP-SN, Y-Axis, U1-L1, U1-SN and L1-MP. In respect to the comparison between Chinese and Indians, Chinese were found to be significant in all the parameters mentioned above. And in arch length tooth size analysis out of seven parameters four parameters proved to be significant MD width of mandibular teeth, overall ratio and Mandibular arch length were significant in Indian males over Chinese males but in females only MD width of mandibular teeth proved to be significant. CONCLUSION: Cepahlometric values are specific for each and every ethnic group. The normative data for Indian and Chinese population should be used as a guide for diagnosis and treatment plan for orthodontist in their country.

关键词： cephalometric Arch length Tooth size Bolton's analysis cast models

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Adaptive Kalman Filtering Approach of Color Noise in Cephalometeric Image

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High Technology Letters 1997年第2期3卷 8-12页

作者：徐常胜 National Lab of Pattern Recognition Institute of Autonation Chinese Academy of Sciences Beijing 10080 P. R. China

A kind of adaptive color noise Kalman filtering approach based on the correlative method of the system output is proposed to solve the cephalometric images of stomatology. This approach builds the color noise Kalman filtering model by adopting the equivalent measurement equation in order to aviod complicated computation and expansion of the dimension of the filter. It is also unnecessary to know the variance of measurement noise beforehand so that it is closer to the actual situation. The results of several experiments are presented to demonstrate the feasibility and good performance of this approach.

关键词： Kalman filter Output correlative method Noise Image cephalometric

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

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Open Journal of Stomatology 2017年第3期7卷 186-196页

作者： Ilaf Al Mawaldi Sawsan Tabbaa C. Brian Preston Mayssa Salti Department of Orthodontics School of Dental Medicine SUNY at Buffalo New York USA School of Orthodontics Brooks Rehabilitation College of Healthcare Jacksonville University Florida USA Department of Orthodontics School of Dental Medicine SUNY at Buffalo New York USA Post-Graduate Program Department of Orthodontics School of Dental Medicine SUNY at Buffalo New York USA

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

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A Research on Orthodontic Patients' Satisfaction

A Research on Orthodontic Patients' Satisfaction

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中华口腔医学会第14次全国口腔医学学术会议（2012年会）

Objective Orthodontic patients’ satisfaction has received more and more attention *** patients’ parents often have great influence on their children’s *** surveying orthodontic patients’ satisfaction and measuring their cephalometric index,this study is trying to find out orthodontic patients’ satisfaction level and find out its affecting factors.

关键词： orthodontic patients parent satisfaction level cephalometric

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