안면비대칭자의 3차원 전산단층사진 분석에서경.연조직간 비대칭 정도 차이
Comparison of asymmetric degree between maxillofacial hard and soft tissue in facial asymmetric subjects using three-dimensional computed tomography
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본 연구는 안면비대칭 환자에서 경조직의 비대칭 정도와 연조직 비대칭 정도의 차이를 3차원적으로 밝히고자 시행되었다. 안면비대칭으로 보이는 성인 남녀 34명을 대상으로 두경부 전산단층사진을 촬영하고 3차원 입체영상으로 재구성한 후 기준평면에 대해 비대칭을 나타내는 6개의 계측항목을 경조직에 설정하고, 이에 대응하는 연조직 계측항목을 각각 설정한 후 3차원 계측을 시행하고 경조직과 연조직의 계측항목간 차이를 비교하였다. 이부편위측과 반대측간의 계측치 차이를 비교한 결과, 경조직과 연조직 모두에서 좌우측 계측치간에 통계적으로 유의한 차이가 관찰되었으며 경조직과 연조직의 비대칭 계측항목을 비교한 결과, 6개의 계측항목 모두에서 통계적으로 유의한 차이를 나타내었다. 이부편위를 나타내는 chin deviation, 하악지와 하악골체를 나타내는 frontal ramal inclination difference, frontal corpus inclination difference 항목은 경조직의 비대칭 정도에 비하여 연조직 비대칭 정도가 작게 나타난 반면, 입술경사를 나타내는 lip cheilion height difference, lip canting은 maxillary height difference, occlusal plane canting보다 크게 나타나 입술부위의 비대칭 정도는 하부 경조직의 비대칭 정도보다 큰 것으로 나타났다. 안면비대칭자에서 경조직과 연조직간 비대칭 정도 차이를 규명한 본 연구 결과는 안면비대칭 평가 시 경조직 외에 연조직 계측항목을 이용한 비대칭 분석도 필요함을 시사하였다.
Abstract
The purpose of this study was to compare the asymmetric degree between maxillofacial hard and soft tissues in individuals with facial asymmetry. Computerized tomographies (CT) of 34 adults (17 male, 17 female) who had facial asymmetry were taken. The CT images were transmitted to personal computers and then reconstructed into three-dimensional (3D) images through the use of computer software. In order to evaluate the degree of facial asymmetry, 6 measurements were constructed as the hard tissue measurements while 6 counterpart measurements were taken as the soft tissue measurements. The means and standard deviations were obtained for each measurement using 3D measure, then t-test was used to investigate the differences between each hard tissue measurement and the corresponding soft tissue measurement. All measurements used in the present study showed statistically significant differences between the hard and soft tissues. The degree of soft tissue asymmetry was smaller than that of corresponding hard tissue asymmetry in case of chin deviation, frontal ramal inclination difference, and frontal corpus inclination difference. On the other hand, the degree of soft tissue asymmetry was greater than that of underlying hard tissue asymmetry in the measurement of lip canting and lip cheilion height difference. The present study suggests that asymmetric differences of hard and soft tissue is observed in facial asymmetric subjects, and thus soft tissue analysis is needed in addition to hard tissue analysis when making an evaluation of facial asymmetry.
참고문헌 (42)
- "A concept of facial esthetics", 40, pp.284~318 (1970)
- "An overview of computerized cephalometrics", 61, pp.1~28 (1972)
- "Assessment of midline discrepancies on the postero-anterior cephalometric radiograph,Tran", 25, pp.261~8 (1977)
- "The pattern of craniofacial associations", 24, pp.24~ (1966)
- "Size of the cranium in parents and their children with cleft lip", 21, pp.193~203 (1984)
- "Asymmetry of the human facial skeleton", 45, pp.125~9 (1975)
- "Nasion true vertical:a proposed method for testing the clinical validity of cephalometric measurements applied to a new cephalometric reference line", 5, pp.43~52 (1990)
- "Predicting soft tissue profile changes concurrent with orthodontic treatment", 60, pp.199~206 (1990)
- "Skeletal asymmetry in esthetically pleasing faces", 61, pp.43~8 (1991)
- "Facial asymmetry in subjects with skeletal class III deformity", 72, pp.28~35 (2002)
- "The reliability of head film measurements:1", 60, pp.111~27 (1971)
- "The reliability of head film measurements:2", 60, pp.505~17 (1971)
- "Principles of image distortion in cephalography", pp.101~8 (1983)
- "Photocephalometry:errors of projection and landmark location", 86, pp.233~43 (1984)
- "The three-dimensional cephalogram:theory,technique,and clinical application", 94, pp.327~37 (1988)
- "Assessment of 3- dimensional computer-generated cephalometric measurements", 116, pp.390~9 (1999)
- "A three-dimensional evaluation of human facial asymmetry", 186, pp.103~10 (1995)
- "Facial three-dimensional morphometry", 109, pp.86~93 (1996)
- "A three- dimensional computerized mesh diagram analysis and its application in soft tissue facial morphometry", 114, pp.404~13 (1998)
- "Soft tissue facial growth and development as assessed by the three-dimensional computerized mesh diagram analysis", pp.215~28 (1999)
- "Three-dimensional facial morphometric assessment of soft tissue changes after orthognathic surgery", 88, pp.549~56 (1999)
- "Value of three-dimensional computed tomography in craniomaxillofacial surgery", 5, pp.282~8 (1994)
- "Indications and limitations of three- dimensional models in cranio-maxillofacial surgery", 26, pp.11~6 (1998)
- "안면비대칭 진단을 위한 악안면 3차원 영상 분석", 42, pp.76~83 (2004), 대치협회지
- "치과학에서 3차원 CT 영상의 적용", 40, pp.853~9 (2002), 대치협회지
- "치과영역에서 개인용 컴퓨터를 이용한 3차원 CT 영상의 활용", 42, pp.197~208 (2004), 대치협회지
- "An assessment of asymmetry in the normal craniofacial complex", 48, pp.141~8 (1978)
- "Craniofacial morphometry by photographic evaluations", 103, pp.327~37 (1993)
- "Distance from symmetry:a three-dimensional evaluation of facial asymmetry", 52, pp.1126~32 (1994)
- "The effect of sex and age on facial asymmetry in healthy subjects:a cross- sectional study from adolescence to mid-adulthood", 59, pp.382~8 (2001)
- "Three-dimensional x-ray stereometry from paired coplanar images:a progress report", 84, pp.292~312 (1983)
- "The geometry of three-dimensional measurement from paired coplanar x-ray images", 84, pp.313~22 (1983)
- "얼굴 비대칭 인지도와 정면 머리방사선 사진 계측항목간의 관련성 연구", 11, pp.41~8 (1998)
- "안면비대칭에 대한 주관적 인지도와 정모두부방사선사진 분석치의 연관성", 31, pp.489~98 (2001)
- "The prevalence of facial asymmetry in the dentofacial deformities population at the University of North Carolina", 12, pp.171~6 (1997)
- "Handbook of Facial Growth", pp.58~163 (1991)
- "3차원 CT 영상을 이용한 두개악안면 분석을 위한 계측점의 제안", 32, pp.313~25 (2002)
- "전산화단층사진을 이용한 하악골 3차원 영상에서 비대칭진단 계측항목의 재현도에관한 연구" (2004), 전남대학교 대학원
- "군집분석법에 의한 안면비대칭의 분류", 39, pp.765~73 (2001), 대치협회지
- "방사선사진과 안모사진을 이용한 하악 비대칭의 평가", 31, pp.199~204 (2001)
- "한국인 얼굴 연조직의 두께", 23, pp.117~21 (1999)
- "Correlations of frontal lip line canting with craniofacial morphology and muscular activity", 14, pp.284~96 (2002)
