본 연구는 정상교합군과 부정교합군의 교합평면경사도와 부정교합군의 치료 전후의 교합평면 경사도를 비교 분석함으로써 골격관계에 따른 교합평면의 치아 치조성 보상에 대하여 알아보고 교정치료 시 교합평면 설정의 기준을 마련하고자 61명의 정상교합자와 92명의 부정교합자의 치료 전후 측모 두부방사선사진을 분석하여 골격 관계에 따른 교합평면 경사도를 비교하였다. 정상교합군은 전후방적 골격양상에 따라 골격성 I급군, II급군 III급 군으로 나누었으며, 수직적 골격양상에 따라서는 수평군, 정상군, 수직군으로 분류하였다. 각 군의 계측치를 일원 분산분석과 사후검정을 통해 분석하였고 치료전후의 변화는 paired t-test로 유의성 검정을 하였다. 본 연구의 결과는 다음과 같다. 1. 정상교합군과 부정교합군간의 비교에 있어 일정한 값을 보인 계측치는 AB평면에 대한 교합평면 경사도이었다. 2. 치료 후의 AB평면에 대한 교합평면 경사도는 II급 골격관계에서는 증가하는 방향으로, III급 골격관계에서는 감소하는 방향으로 정상교합군의 값에 근접하였다. 3. 정상교합군에서 AB평면에 대한 하악 교합평면 경사도는 I급 골격 관계에서 $91.7^{\circ}$, II급 골격 관계에서 $88.8^{\circ}$, I격 관계에서는 $93.5^{\circ}$이었다.
본 연구는 정상교합군과 부정교합군의 교합평면경사도와 부정교합군의 치료 전후의 교합평면 경사도를 비교 분석함으로써 골격관계에 따른 교합평면의 치아 치조성 보상에 대하여 알아보고 교정치료 시 교합평면 설정의 기준을 마련하고자 61명의 정상교합자와 92명의 부정교합자의 치료 전후 측모 두부방사선사진을 분석하여 골격 관계에 따른 교합평면 경사도를 비교하였다. 정상교합군은 전후방적 골격양상에 따라 골격성 I급군, II급군 III급 군으로 나누었으며, 수직적 골격양상에 따라서는 수평군, 정상군, 수직군으로 분류하였다. 각 군의 계측치를 일원 분산분석과 사후검정을 통해 분석하였고 치료전후의 변화는 paired t-test로 유의성 검정을 하였다. 본 연구의 결과는 다음과 같다. 1. 정상교합군과 부정교합군간의 비교에 있어 일정한 값을 보인 계측치는 AB평면에 대한 교합평면 경사도이었다. 2. 치료 후의 AB평면에 대한 교합평면 경사도는 II급 골격관계에서는 증가하는 방향으로, III급 골격관계에서는 감소하는 방향으로 정상교합군의 값에 근접하였다. 3. 정상교합군에서 AB평면에 대한 하악 교합평면 경사도는 I급 골격 관계에서 $91.7^{\circ}$, II급 골격 관계에서 $88.8^{\circ}$, I격 관계에서는 $93.5^{\circ}$이었다.
The purpose of this study was to evaluate the compensatory changes of occlusal plane angle in relation to skeletal factors. Lateral cephalograms of 61 adults with normal occlusion and 92 adults with skeletal malocclusions were traced and measured to analyze skeletal factors and occlusal plane angles...
The purpose of this study was to evaluate the compensatory changes of occlusal plane angle in relation to skeletal factors. Lateral cephalograms of 61 adults with normal occlusion and 92 adults with skeletal malocclusions were traced and measured to analyze skeletal factors and occlusal plane angles. In terms of horizontal relationships, the normal occlusion group and malocclusion group were classified Into subgroups of skeletal Classes I, II, and III, while in terms of vertical relationships, each group was also classified into horizontal , average, and vertical subgroups. Some measurements were evaluated statistically by ANOVA and Post Hoc, and the others were reviewed by Paired t-tests. In this study, only the occlusal plane angle to AB plane did not show a significant difference between the normal occlusion group and malocclusion group. After treatment, the occlusal plane angle to the AB plane of the malocclusion group was approximated to that of normal occlusion group. The LOP to AB plane angle of the normal occlusion group was 91.7 in skeletal Class I, 88.8 in skeletal Class II, and 93.5 in skeletal Class III. This study was done to assess the treatment changes of the occlusal plane in the malocclusion group, and to draw a comparison with the normal occlusion group in order to present a reference to establish a new occlusal plane inclination.
The purpose of this study was to evaluate the compensatory changes of occlusal plane angle in relation to skeletal factors. Lateral cephalograms of 61 adults with normal occlusion and 92 adults with skeletal malocclusions were traced and measured to analyze skeletal factors and occlusal plane angles. In terms of horizontal relationships, the normal occlusion group and malocclusion group were classified Into subgroups of skeletal Classes I, II, and III, while in terms of vertical relationships, each group was also classified into horizontal , average, and vertical subgroups. Some measurements were evaluated statistically by ANOVA and Post Hoc, and the others were reviewed by Paired t-tests. In this study, only the occlusal plane angle to AB plane did not show a significant difference between the normal occlusion group and malocclusion group. After treatment, the occlusal plane angle to the AB plane of the malocclusion group was approximated to that of normal occlusion group. The LOP to AB plane angle of the normal occlusion group was 91.7 in skeletal Class I, 88.8 in skeletal Class II, and 93.5 in skeletal Class III. This study was done to assess the treatment changes of the occlusal plane in the malocclusion group, and to draw a comparison with the normal occlusion group in order to present a reference to establish a new occlusal plane inclination.
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문제 정의
This study was done to evaluate the compensatory changes of occlusal plane angle in relation to skeletal factors. Lateral cephalograms of 61 normal occlusion ad니Its and 92 malocclusion patients were traced and measured for skeletal factors and oc이니sal 이ane angles.
제안 방법
1 mm, respectively. A bisected occlusal plane, hjnctional occlusal plane, and lower occlusal plane were used to evaluate the characteristics. The reference points (Fig 1), reference planes (Fig 2), measurements (Fig 3, 4) and occkjsal planes (Fig 5), used in this study were illustrated in figures.
The remaining subjects, whose ANB values were within standard deviation, were in시나ded in 아(이etal Class I subgroup. In terms of vertical relationship, the subjects were s니bdivided into vertical, average, and huNizontal subgroups, according to lower gonial angle, Bjork's sum, and facial height ratio.
This study was investigated to assess the treatment changes of occlusal plane inclination in normal occlusion group and malocclusion group in order to present a reference for establishing a new occlusal plane inclination.
of the bisected occlusal plane. Thus, we investigated three types of oc이니sal planes, the bisected occlusal plane (Downs1 occlusal plane angle), functional occl니sal plane14\ and lower occlusal plane. The SN plane, FH plane, mandib니印 plane, AB plane, and N-Pog plane were used as reference planes.
대상 데이터
Thus, we investigated three types of oc이니sal planes, the bisected occlusal plane (Downs1 occlusal plane angle), functional occl니sal plane14\ and lower occlusal plane. The SN plane, FH plane, mandib니印 plane, AB plane, and N-Pog plane were used as reference planes.
All the patients in the malocclusion group were over the age of 18, and their average age was 25 years. The lateral cephalograms of these 153 adults were evaluated. Each group was subdivided into 3 subgroups as shown in Table 1.
데이터처리
The normal occlusion group and malocclusion group were classified into subgroups of skeletal Classes 1, li, and Ⅲ, and also 이assified into hori象ntal, average, and vertical s니bgroups. Some measurements were evaluated statistically by ANOVA and Post Hoc, and the others were carried out by paired t-tests.
The changes of oc이니sal plane armies of malocclusion groups during treatment according to vertical relationship were eval니ated by paired t-test.
according to vertical relationship. The mean and standard deviation of occlusal plane angle to each reference plane of each subgroup was calculated, and one-way ANOVA was done to eva扣자e and compare the occlusal plane angles among the three groups.
Treatment changes in the oc이니sal plane 건ngies of malocclusion groups during treatment were calculated in each antero-posterior subgroup and compared by paired t-test.
성능/효과
2. With treatment, the occlusal plane angle to AB plane of the 아(이etal Class Ⅲ malocclusion group was decreased and approximated to that of the normal occlusion group. In the m시。cclusion group of sk이etal Class Ⅱ, the occlusal plane angle to AB plane was increased and approximated to that of the normal occlusion group.
3. The angle of lower occlus시 plane to AB plane in the normal occasion group was 91.7° in skeletal 이ass I, 88.8° in sk이et이 Class II and 93.5° in 아<eletal Class Ⅲ.
In the results of paired t-testing between pre- and post -treatment, according to the antero-posterior relationship, the occlus기 plane angles to SN plane or FH plane showed a significant difference, but the occlusal plane angle to AB plane showed i■이atively less significance once again. However, the direction was apparent in that the oc이usal plane angle to AB plane of the 아Class Ⅲ malocclusion group was decreased, and was approximate to that of the normal occlusion g「o나p of skeletal Class Ⅲ.
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