• 대한치과교정학회지
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• 제24권2호
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• pp.319-329
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• 1994

This study was carried out to research the adaptation patterns of head posture after activator therapy in functional class III malocclusion patients. For this purpose, 29 functional class III malocclusion patients, from the ages of 8 to 13 years old, were used. 1, Increse in capacity of oral cavity capacity were found in all the samples, but craniocervical angulation were varied into incresed group and decreased group after activator therapy. 2. Head posture exhibited the compensatory adaptation in the relative growth increments of the vertical dimension, ALFH and PLFH. 1) A group with more PLFH and less sagittal angle showed relatively small growth increment in PLFH during the treatment period, thus craniocervical angulation was increased. 2) A group with less PLFH and more sagittal angle showed relatively great growth incrmenet in PLFH during the treatment period, thus craniocervical angulation was decreased.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제26권2호
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• pp.115-131
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• 2000

In the study of craniofacial deformity, it is very important that identifying the factor which can affect the morphology and which is closely related to the morphology, because it can not only improve the comprehension of growth and developmental process but also be applied in growth prediction and treatment modality. Several investigators have already mentioned the characterstics of head posture and airway space in relations to morphologic difference. But it is very meaningful work in clarifying the correlation between morphology, head posture and airway space that observing the change of head posture after morplologic change caused by operation and the change of airway space after same procedure. To investigate above correlation, I selected normal group which is consisted of 43 adults and mandibular prognathism group which is consisted of 47 adults who had been operated by sagittal split ramus osteotomy and were followed up more than 1 year. With their lateral skull radiograghs, reference lines which can evaluate each measuring points and areas without effect of postural change were first determined. And using above reference lines, change of airway space, positional change of tongue and hyoid, change of cranial and cervical angulations were measured. The results obtained from the study were as follows 1. In the change of head posture, the position of tongue and hyoid neighboring to pharynx is more closely related to the reference line of cervical column than to reference line of cranium. 2. After mandibular setback operation, the airway dimension was decreased to 81.6% of preoperative state at 1 month postoperatively and was slightly increased to 89.7% at 1 year postoperatively. 3. Posterior movement of tongue plays important role in decrease of airway dimension and inferior movement of hyoid was closely correlated with posterior movement of tongue. 4. Postoperative anterior movement of mandible, namely, morphologic relapse had correlation with relapse phenomenon of airway dimension. 5. Craniocervical angulation increased postoperatively. Especially in the postoperative early state, there was increased foreward inclination of cervical angulation rather than increase of cranial angulation. But at postoperative 1 year it was observed that cervical inclination was returned to preoperative state and cranial angulation was increased gradually. 6. Increase rate of airway dimension was correlated with the increase of cranial angulation from postoperative 1 month to 1 year. In conclusion, relapse tendency of airway dimension following increase of cranial angulation was found after mandibular setback operation and it is considered that increase of cranial angulation is one of compensatory mechanism in airway maintenance.

• 대한치과교정학회지
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• 제28권4호
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• pp.499-515
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• 1998

두경부 자세 및 혀, 설골의 위치와 두개안면골격간의 연관성을 알아보기 위해, 원광대학교 치과대학 재학생 중 선천적 두경부 이상이나 결손치가 없고 과거 교정 치료나 보철치료의 경험이 없는 남자 50명과 여자 40명을 대상으로 natural head position(NHP)상태에서 두부방사선 사진을 채득하여 전통적인 두개내 참고선과 두개의 진성 참고선을 이용하여 계속한 결과 다음과 같은 결론을 얻었다. 1. 두경부 자세변수들에서는 남녀간 차이가 없었으나, 설골의 위치는 남자가 여자에 비해 더 전하방에 위치하였으며, 더 큰 전하방 경사도를 보였다. 2. 경추의 경사도가 클수록 NHP에서 안면돌출도는 작게 나타났으며, 경추의 전방만곡이 증가할수록 수직적인 안모형태를 보였다. 3. 두경부각이 작을수록 두개저에 대하여 설골이 전방에 위치하였으며, 두경부각과 설골의 수직적인 위치는 연관성을 보이지 않았다. 4. 하악골이 전돌될수록 설골은 전방에 위치하였으며, 두개안면형태와 설골의 수직적인 위치는 미약한 연관성을 나타냈다.

• 대한치과교정학회지
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• 제18권1호
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• pp.253-265
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• 1988

This study was designed to compare the normal head posture group with the extended head posture group in order to investigate the relatinship between head posture and craniofacial morphology. The subjects were devided into two groups; one included 80 children with normal head posture and occlusion, and the other 60 malocclusion patients with extended head posture. Their lateral cephalograms were traced and analysed based on 38 selected items. The following conclusion were reached. 1. The craniocervical angulations in normal group; OPT to SN, CVT to SN, OPT to FH and CVT to FH angles were $101.7^{\circ},\;104.8^{\circ},\;91.7^{\circ}\;and\;100.7^{\circ}$, respectively. 2. Compared with normal group, experimental group showed increase in mandibular plane angle, decrease in facial plane angle, airway space and posterior facial height but, there were insignificant differences in anterior facial height and tongue level between two groups. 3. Of the craniocervical angulations, OPT to FH angle was most highly correlated to the variables of the craniofacial morphology. 4. The effect of craniocervical angulation on craniofacial morphology in experimental group was different from that in comparison of normal group and experimental group.

• 대한치과교정학회지
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• 제27권4호
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• pp.569-584
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• 1997

본 연구는 상악골 급속확장술식 후 호흡변화와 연관된 두경부 자세의 변화와 이에 따른 설골 위치 변화의 양상을 알아보기 위하여 시행하였다. 평균연령이 12세 9개월이고 Hellman stage IIIc에서 adult stage까지의 인두강이 정상적이며 상악골 급속확장술식을 시행 한 Angle씨 III급 골격 양상의 남녀 환자 32명을 대상으로 하여 이들 중 상악골 급속확장술식 시행 후 두경부각도가 증가된 군을 A군으로, 감소된 군을 B군으로 분류하였고 대조군은 연구대상과 동일한 Hellman stage이며 평균연령 12세 7개월의 Angle씨 I급 골격양상을 띠는 남녀환자 23명으로 이들을 C군으로 하여 골격양상과 인두강크기, 두경부 자세, 설골 위치에 대한 항목을 연구하여 다음과 같은 결론을 얻었다. 1 골격양상과 인두강 비교 1) A, B군의 치료 전후 비교에서, 두 군 공히 하악이 하방경사되었고 인두강 크기는 변화가 없었다. 2) 세 군간의 치료 전후를 각각 비교한 결과, A, B군의 PMV에 대한 골격 양상과 인두강 크기는 정상이었다. 2. 두경부 자세 비교 1) A, B군의 치료 전후 비교에서, A군에서는 두경부 각도가 상방으로 B군은 두경부 각도와 하악하연이 하방으로 경사됨을 보였다. 2) 세 군간의 치료 전후를 각각 비교한 결과, 치료전에 두경부 각도가 A군은 정상적이었으며, B군은 정상보다 상방 경사짐을 보였다. 치료후에는 A, B군 모두 정상적인 두경부각도를 보였다. 3. 설골 위치 비교 1) A, B군의 치료 전후 비교에서, 두 군 공히 설골장축 각도의 변화가 없었고 전후방적으로 A군은 설골이 후방위치 되었으며 B군은 변화가 없었다. 수직적으로는 A군의 APHFH가 증가되었을 뿐 나머지 항목에서는 두 군 모두 변화가 없었다. 2) 세 군의 치료 전후를 각각 비교한 결과, 설골장축 각도는 A, B군 모두 정상적이었으며, 전후방적으로 치료전에 A군이 B, C군보다 설골이 전방에 위치되었으나 치료후에는 A, B군 공히 정상적 위치였었다. 설골의 수직적 위치는 치료 전후에 A, B군 모두가 정상적이었다.