Search published articles


Showing 3 results for Cephalometry
A comparison between two lateral cephalometry techniques (standard and natural head position)
Z.  hedayati , S. Sang ,
Volume 16, Issue 1 (4-2003)
Abstract

Statement of Problem: Cephalometric findings are of high importance in making decision about orthodontic treatment plans and orthognathic surgeries. Natural head position (NHP) is considered as a useful and exact radiographic technique.

Aim: The aim of the present study was to compare two techniques, namely Standard and NHP, in lateral cephalometry.
Materials and Methods: In this cross- sectional study, performed in Shiraz. 138 randomly selected students {70 males .and 68 females), age ranging from (13-15). were evaluated clinically and radiographically. None of them had a history of orthodontic treatment, head and face fracture or surgical operations. Lateral cephalograms were taken in both standard and natural head position techniques, for each student. For statistical analysis, l-lest for paired samples, was done.
Results: This study showed that in anterior-posterior dimension, among angles with significant differences in two techniques, those of standard one were more reliable, whereas in vertical dimension.statistical differences showed natural technique as more useful one.
Conclusion: Due to the fact that natural cephalometry requires more patient cooperation, more time and a higher complex technique, it is not suggested, except when different clinical and cepholomeiric findings are observed.


Cephalometric evaluation of Class III patients treated with facemask: 12 months follow-up (Clinical trial)
Sahar Ghodsi Bushehri, Farzaneh Khajeh, Somayeh Heidari, Shahla Momeni Danaei,
Volume 26, Issue 2 (5-2013)
Abstract

Background and Aims: Skeletal class III malocclusions are considered as one of the most complex and difficult orthodontic problems to diagnose and treat. Facial appearance and occlusion problems make the patients to seek treatment as soon as possible. The purpose of this study was to evaluate the outcomes of early treatment with facemask compared to the patients who had no treatment.

Materials and Methods: For this retrospective study, 38 growing patients (mean age, 8.5 years old) with class III dentoskeletal malocclusion were divided into 2 groups. 23 patients were treated with facemask and 15 patients who did not receive any treatment were assigned as control group. Lateral cephalograms were taken before and after treatment and dentoskeletal changes were estimated. Data were analyzed using Wilcoxon signed ranks test.

Results: The results revealed statistically significant forward displacement of maxillary bone and upper incisors (P<0.001), and downward-backward rotation of mandible in facemask group (P<0.001). Increased lower facial height was seen in both treatment and untreated groups. However, in untreated group some measurements revealed forward displacement of maxillary complex as well.

Conclusion: It seems that in class III patients treating with facemask is a better choice than ChinCap and decision making for early treatment in class III patients should be considered seriously. Moreover, specific attention to the type of patient’s skeletal discrepancy is necessary. In class III patients, facemask might be a better option than other appliances.


Evaluation of the cephalometric changes of Tweed triangle in patients with cleft lip and palate
Mohsen Shirazi, Yasamin Farajzadeh Jalali, Hojat Darvishpour,
Volume 28, Issue 3 (10-2015)
Abstract

Background and Aims: Cleft lip and palate patients require orthodontic treatments during their childhood and adolescence. Tweed diagnostic triangle as well as cephalometric assessments provides important data regarding the skeletal patterns for the treatment and diagnostic purposes. The present study determined the cephalometric changes of Tweed triangle in the cleft lip and palate patients compared to normal patients.

Materials and Methods: In total, 101 cleft and palate patients as well as 95 normal individuals with the balanced age, gender and race were evaluated. All the cleft and palate patients had similar treatment histories. Radiographic clichés were obtained from both groups and the images were traced after identifying the anatomic landmarks. The studied landmarks included points, lines, and plans as well as dental and skeletal angles and distance ratios measured in radiographic images. The landmarks were statistically analyzed using Student t test.

Results: Significant differences were found between the cleft lip and palate patients and normal individuals regarding craniofacial complex morphology (P<0.001). Gender did not show significant effect on the cephalometic indices changes (except to IMPA and FMIA angles). Tweed angle changes were more in the males than that of females between normal and cleft lip and palate patients. Mandibular retrusion (decreased SNB), gonial angle opening, increased mandibular plan inclination and facial anterior height were similar in the normal and cleft lip and palate individuals while no significant differences were found between two groups regarding cranium indices (P>0.05).

Conclusion: In total, significant differences were observed between normal and cleft lip and palate individuals regarding Tweed diagnostic triangle area. These differences were decreased IMPA and increased FMA and FMIA angles. No significant differences were found in terms of other indices.


Page 1 from 1     

© 2025 , Tehran University of Medical Sciences, CC BY-NC 4.0

Designed & Developed by: Yektaweb