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A mirror was used in the present study and the standard deviation was 1. Intra- and interexaminer variability in head posture recorded by dental auxiliaries.

A comparison between estimated and registered natural head posture. To evaluate the error of method, the described angle was measured again on all photographs by the same evaluator after a period of ten days. Cooke and Wei 8 analyzed the use of the ear rods of the cephalostat and found no significant influence regarding the obtainment of the NHP. The Frankfurt horizontal plane parallel to soil is the most commonly used reference for positioning patients during photographic or radiographic records, as recommended by Burstone.

Orthod I Providing theoretical and practical foundations necessary to the orthodontic clin practice, enabling them, as future generalist dentists, to identify, diagnose and treat orthodontic problems using removable and functional appliances 1. New photographs were taken after 15 days of all the children in the sample using these same procedures T2 with and without cephalostat. Orthodontics I – 1Orthodontics: An auxiliary light source was set up in a box 32 cm 3 on a metal support cm in height.

Three-year reproducibility of natural head position: Based on the protocol of the present study, the researcher did not interfere in the positioning of the patient, as the intention of the study was to observe the reproducibility of the NHP in children. There are two methods for obtaining the NHP.


Reproducibility of the NHP between both photograph sessions was evaluated using an angular measurement between the reference vertical line and a profile line passing through the soft pogonion and the upper lip point. Fifteen-year reproducibility of natural head posture: A number of studies have found evaluations of the NHP required in photographs and lateral radiographs to be reasonably stable. Language of Instruction Portuguese.

Head posture and dentofacial proportions. In the second method, known as the Estimated Natural Head Position ENHPa conventional cephalogram or profile photograph is taken and then rotated to the patient’s NHP under the judgment of an experienced specialist, if necessary. There were no atkas significant differences between first and second measurements, as determined by the paired Student’s t-test.

One of the aims of orthodontic viaizs is to improve the patient’s profile and not merely correct numbers based on intracranial lines. An adjustable device on the anterior portion of the structure parallel to floor contained a red cotton string 0.

Pre-clinical Unit 3

To know the essential theoretical basis of craniofacial growth, dentition development, etiology and diagnosis of occlusal and skeletal problems 2. The importance of the reproducibility of the NHP is justified by ortodoncla fact that facial analysis is essential to orthodontic diagnoses. Simple technique to achieve a natural head position for cephalography. Another situation that caused discomfort in the patients was the presence of the string representing the true vertical line VLwhich was located in ve of the patient.


Atlas De Ortodoncia Viazis Pdf Download

The aim of the present study was ortodonci evaluate the reproducibility of the natural head position in standard photographs of male and female Brazilian children from 8 to 12 years of age with and without the aid of a cephalostat. However, it should be noted that, in everyday practice, there is a need for trained technicians to record the photographs in the NHP.

The Shapiro-Wilk revealed that these data exhibited normal distribution. As there was no increase in accuracy when obtaining the NHP with the assistance of the cephalostat, this device seems unnecessary.

Lin and Arild 15 found a large variation viazid the NHP of children between six and nine years of age assessed longitudinally.

Variation in cephalometric reference lines. Arnett et al 3 viazia the analysis of soft tissues based on the philosophy of “Facial Keys”, which reinforces the need for the use of the NHP.

The photographs were taken again after a day interval using the same protocol. The NHP was obtained following the method proposed by Solow and Tallgren 27 adapted to photographs with and without the aid of a cephalostat. Essentials of facial growth. Head posture and cephalometric analyses: These structures were adjustable in the horizontal and vertical directions for the correct adaptation to the patient’s ears.