[논문]한국인 정상교합자의 하악 치열궁 형태

윤영국; 국윤아; 김성훈; 모성서; 차경석; 김정기; 태기출

한국인 정상교합자의 하악 치열궁 형태
Mandibular Clinical Arch Forms in Koreans with Normal Occlusions 원문보기

대한치과교정학회지 = Korean journal of orthodontics, v.34 no.6 = no.107, 2004년, pp.481 - 487

윤영국 (가톨릭대학교 의과대학 임상치과학대학원) , 국윤아 (가톨릭대학교 의과대학 임상치과학대학원) , 김성훈 (가톨릭대학교 의과대학 임상치과학대학원) , 모성서 (가톨릭대학교 의과대학 임상치과학대학원) , 차경석 (단국대학교 치과대학 교정학교실) , 김정기 (전북대학교 치과대학 교정학교실 및 구강생체과학연구) , 태기출 (원광대학교 치과대학 교정학교실)

초록
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본 연구의 목적은 한국인 정상교합자에서 하악치열궁의 형태적 차이를 알아보고자 하였다. 한국인 102명의 정상교합자를 대상으로 하악 모형의 교합면을 복사한 후 13개의 접촉점중에서 가장 협측으로 위치한 부분을 digitize하였고 각 치아의 브라켓위치에 해당하는점을 하악치아의 두께에 의거하여 4개의 선계측과 2개의 비율을 측정하였다. 치열궁의 형태를 square, ovoid, tapered from으로 분류하여 그 빈도를 남녀성별에 따라 비교한 결과 특이한 차이점을 보이 지 않았으나 대구치간 폭경에서는 남녀 성별의 차이를 보였다. 정상교합자에서 치열궁 형태분포는 ovoid, square, tapered순 이었고 tapered arch from은 $10\%$미만이었다. 치열궁 형태의 빈도분포에 있어서 남녀간의 차이는 없었다.

Abstract ▼ AI-Helper

The purpose of this study was to clarify morphologic characteristics between mandibular clinical arch forms in Koreans with normal occlusions. The study included data from 102 Koreans. The most facial portion of 13 proximal contact areas was digitized from photocopied images of the mandibular dental arches. Clinical bracket points were calculated for each tooth based on mandibular tooth thickness data. Four linear and two proportional measurements were taken. The dental arches were classified into ovoid, square and tapered forms. The frequency distributions of the three mandibular arch form classifications were determined and compared between male and female subjects. No significant differences in arch form size were found between the sexes. However, there were a few differences in molar width. It was useful to classify mandibular clinical arch forms present in normal occlusion samples into ovoid, square and tapered categories. The frequency of the ovoid form was the highest, and that of the square form was the second highest. The tapered arch form was found in less than 10 percent of subjects. No significant differences in their frequency distributions and dimensions were shown between males and females.

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문제 정의

The 이inician sho-니d be aware of the characteristics of the mandib니印 clinical arch forms of normal occlusion to understand how to best approach treatment of malocclusion. Therefore, the purpose of this study was to determine the morphologic기 dimensions within mandib니印 clinical arch forms and clarify the frequency distribution of ovoid, square and tapered arch forms in Koreans with normal occlusions.

제안 방법

The Allowing 4 linear and 2 proportional measurements were taken (Fig 2); Intercanine width: the 세stance between the canine finical bracket points; Interm이ar width: the distance between the first m이하‘ clinical broket points; Canine depth: the shortest distance from a line connecting the canine 지inical bracket points to the origin between the central incisors ; M이depth: the shortest distance from a line connecting the first molar clinical bracket points to the origin between the central incisors; Canine W/D ratio: the ratio of the intercanine width and the canine depth; Molar W/D ratio: the ratio of the interm이ar width and the molar depth.
05. The measurement error was assessed by statistically analyzing the difference between duplicate measurements taken at least 2 weeks apart on 24 casts selected at random. The measurement errors were generally small (less than 5% of the measured mean value) and within acceptable limits.
Twelve clinical bra사<et points from each individ니al sample were printed to full size to determine which arch form, square, ovoid, or tapered (OrthoForm, 3M Unitek, Calif), they matched. Their respective arch forms were selected based on the arch form that best fit the 8 clinical bracket points from right first p「em이ar to left first premolar (Fig 3).

대상 데이터

The data base for this study consisted s이ely of Korean samples. The Korean normal occlusion group was made up of 102 cases (21.

이론/모형

A digitized mandib너아* 이inical arch form for Koreans with normal qccI너sion was made with a 12th degree equation which was based on 13 이inical bra아cet points (Fig 4). The comparison between the female and male groups is illustrated in Fig 5.
The chi-sq니are test and Fisher's exact test were used to assess the association between arch form distribution and gender. Various arch dimensions for both male and female samples were compared for differences using the 니npaired t-test and the Wilcoxon Rank Sum test.
The digitized mandib니印 이inical arch form in Koreans with normal occasion was made with a 12th degree equation which was based on 13 이inical 아a아<et points. The polynomial function used in this study enables clinicians to trace curves through the thirteen reference points.
gender. Various arch dimensions for both male and female samples were compared for differences using the 니npaired t-test and the Wilcoxon Rank Sum test. All analyses were tested at the significance level of 0.

성능/효과

In the total sample, ovoid arch form comprised 49.02 % of the sample, while the s이ua「e and tapered arch forms made up 42.16 and 8.82 % respectively. The female group had a higher percentage of ovoid forms than the male group.

참고문헌 (20)

Felton JM, Sinclair PM, Jones DL, Alexander RG. A computerized analysis of theshape andstability of mandibular arch form. Am J Orthod Dentofacial Orthop 1987;92:478-83.

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De La Cruz A, Sampson P, Little RM, Artun J, Shapiro PA. Long term change in arch form after orthodontic treatment and retention. Am J Orthod Dentofacial Orthop 1995;107:518-30

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McLaughlin RP, Bennett JC. Arch form considerations for stability andesthetics. Rev Esp Orthod 2000;29:46-63
Shapiro PA. Mandibular arch form and dimension. Am J Orthod 1974;66:58-70

상세보기
Raberin M, Laumon B, Martin J, Brunner F. Dimensions andform of dental arches in subjects with normal occlusions. AmJ Orthod Dentofacial Orthop 1993;104:67-72

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Currier JH. A computerized geometric analysis of human dental arch. Am J Orthod 1969;56:164-79

상세보기
White LW. Individualized ideal arches. J Clin Orthod 1978;12:779-87
Robertt JH. Segment concept in arch pattern design. AmJ Orthod 1980;77:355-67

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Andrews LF. The sixkeys to occlusion. Am J Orthod 1972;62:296-309

상세보기
Nojima K, McLaughlin RP, Isshiki Y, Sinclair PM. A comparative study of Caucasian andJapanese mandibular clinical arch forms. Angle Orthod 2001 ;71 :195-200
Kwon YC, Sung JO, Kwon OW, Sung JH.The dental arch form in normal occlusion. Korea J Orthod 1989;19: 95-105
Kim SC. A study on the configurations of Korean normal dental arches forpreformed arch wire. Korea J Orthod 1984;14:93-100
Nam JH, Lee KS. A study pf mandibular dental arch form of the Korean with normal occlusion. Korea J Orthod 1996:26:535-65
Lee YC, Park YC. A study on the dental arch by occlusogram in normal occlusion. Korea J Orthod 1987;17:279-86
Fujita K, Takada K, QianRong G, Shibata T. Patteming of human dental arch wire blanks using a vector quantization algorithm. Angle Orthod 2002;72:285-94
Korean orthodontic association committee for malocclusion report: Korean adult normal occlusion cephalometric measurements. Seoul Korea 1997
Andrews LF. Straight Wire-The concept and appliance. San Diego, Calif: LAWells Co;1989
Little RM, Wallen TR, Riedel RA. Stability and relapse of mandibular anterior alignment. First premolar extraction cases treated by traditional edgewise orthodontics. Am J Orthod 1981 ;80:349-65.

상세보기
Braun S. Hnat WP, Leschinsky R, Legan HL. An evaluation of the shape of some popular nickel titanium alloy preformed arch wires. AmJ Orthod Dentofacial Orthop 1999;116:1-12

상세보기
Lee SJ. Korean mandibular clinical dental arch forms with malocclusions. master of science thesis, The Catholic University of Korea 2003

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한국인 정상교합자의 하악 치열궁 형태
Mandibular Clinical Arch Forms in Koreans with Normal Occlusions 원문보기

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한국인 정상교합자의 하악 치열궁 형태 Mandibular Clinical Arch Forms in Koreans with Normal Occlusions 원문보기

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국윤아 (17) 모성서 (11) 차경석 (79) 김정기 (39) 태기출 (20)

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한국인 정상교합자의 하악 치열궁 형태
Mandibular Clinical Arch Forms in Koreans with Normal Occlusions 원문보기

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