ABSTRACT
To obtain standards for the soft tissue facial profile for male and female Palestinian adults using Holdaway and Legan-Burstonecephalometric analyses. 77 lateral cephalometric radiographs for non-growing Palestinian adults [46 males and 31 females] with normal occlusion were traced and measured. When compared to Holdaway norms, Palestinian adults have similar values of except for the skeletal profile convexity, H angle, and basic upper lip thickness, which were larger in Palestinians. When compared with Legan-Burstone norms [facial form analysis], Palestinians showed similar values except for decreased mandibular prognathism and increased lower face-throat angle. Comparison between men and women showed that basic upper lip thickness, upper lip thickness, and inferior sulcus to H-line were significantly larger in Palestinian men when compared to Palestinian women. The results of this study indicates that the soft tissue facial profiles for Palestinians and the values of Holdaway and Legan-Burstone are different. Such differences should be taken in to consideration when formulating a treatment plan for Palestinian patients seeking orthodontic treatment and/or orthognathic surgery
Subject(s)
Humans , Female , Male , Cephalometry , Adult , LipABSTRACT
The aim of this study was to evaluate and compare the skeletal and dentoalveolar effects of chincup and chincup plus bite plate therapies applied to growing Class Ill patients. The material consisted of lateral cephalometric and hand-wrist films of 37 skeletal Class Ill cases obtained before treatment and after achieving a Class I relation. 23 cases were treated with only chincup, 14 with chincup+posterior bite plate appliances. The mean pretreatment ages were approximately 11 years and the observation period was 1 year. The cephalometric films were analyzed according to the structural superimposition method of Bjork. All tracings were double-digitized and the measurements were calculated by a computer program [PORDIOS]. Treatment changes within the groups and the differences between the groups were analyzed statistically. Facial heights increased in both groups, while increase in the upper anterior facial height was more significant in chincup+bite-plate group. Forward positioning of the maxilla was significant in both groups, whereas posterior rotation of the maxilla was significant in chincup+bite-plate group. The mandible was positioned backward, gonial angle decreased significantly in both groups. Posterior rotation of the mandible was more significant in the chincup+bite-plate group. Intermaxillary relationship improved significantly in both groups. The overjet increased and the overbite decreased, upper incisors protruded significantly in both groups. Protrusion of the maxillary incisors were more significant in the chincup+bite-plate group. Mandibular incisors showed retrusion in the chincup, protrusion in the chincup+bite-plate group. Long-term studies are required in order to confirm the success and stability of these changes
Subject(s)
Humans , Cephalometry , Orthodontic Appliances , Treatment OutcomeABSTRACT
To determine the dentofacial cephalometric values for Emirati adults, and to compare them with those of Caucasians. Standardized Lateral cephalometric radiographs for 30 Emirati women and 32 Emirati men with normal occlusion were traced. Skeletal comparisons between Emirati adults and Caucasians showed that Emiratis tend to have decreased SNB angle, increased ANB angle, and increased anterior and posterior facial heights, while dental comparisons showed that Emiratis have bimaxillary dental protrusion and decreased inter-incisal angle. When comparing men with women, both anterior facial height [N-Me] [P<.001] and Posterior facial height [S-Go] [P<0.001] were significantly increased in Emirati men compared with Emirati women. Relative to Caucasian cephalometric norms, Emirati adults tend to have increased ANB angle because of retrognathic mandibles. Emirati adults showed longer anterior and posterior facial heights, decreased inter-incisal angle and bimaxillary dental protrusion as compared with Caucasians. Emirati men have longer anterior and posterior facial height in relation to Emirati women. It is recommended to use these cephalometric values into daily orthodontic practice when formulating a treatment plan for Emirati patients
Subject(s)
Humans , Male , Female , Dental Occlusion , Face/anatomy & histologyABSTRACT
To determine the posteroanterior cephalometric norms in Palestinian adults, and to compare the Palestinian norms with the norms of other ethnic groups. PA cephalometric radiographs for 70 Palestinian adults aged between 17-23 years were selected on the basis of Class I molar relationship, good facial symmetry, and no history of previous orthodontic treatment. Fourteen transverse linear measurements, including 10 skeletal measurements and 4 dental measurements, were determined on each radiograph. Dentofacial transverse dimensions in Palestinian adults were generally similar to Rocky crease in Palestinian men compared to women except for the inter-orbital distance. Regarding dental transverse measurements, both maxillary and mandibular inter-molar widths increased were nearly similar in both genders. These posteroanterior cephalometric norms are recommended to be used when formulating a treatment plan for this particular ethnic group