การศึกษาความสัมพันธ์ของโครงสร้างร่างกายและโครงสร้างกะโหลกศีรษะและใบหน้า THE RELATIONSHIP BETWEEN BODY STRUCTURE AND FACIAL STRUCTURE
Keywords:
Orthodontic Treatment, Craniofacial Structure, Body Structure, ForceplateAbstract
Introduction: At present, orthodontic treatment is able to improve the facial profile by correcting the abnormality of the hard tissue. But it was found that the most common problem after the treatment is the relapse of dental misalignment. It has been claimed that people who have abnormality in facial structure will have abnormality in the body structure as well. So correcting only the facial structure cannot maintain the condition and it may contribute to the relapse. So this study found out about the correlation between the body structure examined by clinical examination and craniofacial structure.
Material and Method: 34 healthy subjects, who never experienced orthodontic treatment, body structure alteration procedure or had serious accident which affected the body structure, were captured their facial photographs by Canon 450D with Micro Lens in the position and analyzed with AutoCAD for Mac 2012 program. The facial structures were evaluated by measuring the deviation of menton from facial midline and the angle between interpupillary line and tongue blade which resemble the occlusal plane. Forceplate were selected to examine the body balance and the result of the center of pressure was shown. Subjects were asked to stay still on forceplate in the position for 30 seconds each time, twice. Scoliometer was used to analyze the body structure by measuring at thoracic and lumbar spine levels as per the standard instruction of the device. Data from each subject was analyzed by Linear Regression.
Result: The symmetry of lumbar spine structure is significantly directly related to the deviation of menton from facial midline and to the angle between interpupillary line and occlusal plan (p-value =.05).
Conclusion: The result from this study shows that the body posture and craniofacial structure is correlated. So the basic method for body posture evaluation by forward bend test can be used to screen the malocclusion patient before orthodontic treatment.
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