• Journal of Oral Medicine and Pain
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• v.26 no.1
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• pp.51-58
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• 2001

다양한 자세에서 교합장치의 두께가 저작근에 미치는 영향을 근전도학적으로 평가하고자, 측두하악장애의 징후와 증상이 없고 정상교합을 가진 성인 8명을 대상으로, 교합장치를 장착하지 않은 상태에서와 4.3, 6.0, 8.1mm 두께를 가진 교합장치를 장착한 상태에서 직립위, 식사위 그리고 앙와위에서 최대 이악물기 상태의 좌, 우측 교근 몇 전측두근의 근활성도를 채득, 분석하여 다음과 같은 결과를 얻었다. 1. 전측두근에서는 교합장치를 장착하지 않은 상태보다 교합장치를 장착한 상태에서 근활성이 유의하게 감소하였고 (p<0.05), 교근에서는 차이가 없었다. 2. 직립위에서 전측두근의 근활성은 교합장치를 장착하지 않은 상태보다 8.1mm 두께의 교합장치를 장착한 상태에서 유의하게 감소하였다 (p<0.05). 3. 식사위에서 전측두근의 근활성은 교합장치를 장착하지 않은 상태보다 8.1mm 두께의 교합장치를 장착한 상태에서 유의하게 감소하였다 (p<0.05). 4. 앙와위에서 전측두근의 근활성은 교합장치를 장착하지 않은 상태보다 4.3, 6.0, 8.1mm 두께의 교합장치를 장착한 상태에서 유의하게 감소하였다 (p<0.05).

• The Journal of Korean Academy of Prosthodontics
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• v.59 no.3
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• pp.341-349
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• 2021

The evaluation of occlusion using digital methods is easier and simpler in terms of recording, comparison, analysis, and objectivity compared to existing methods such as articulating paper and occlusion foil. The purpose of this case report was utilizing the digital method for evaluating occlusion. The occlusion of patient requiring full veneer crown restoration was evaluated using an intraoral scanner (i500, Medit, Seoul, Korea) at every visit. The occlusion was also assessed using conventional articulating paper and a digital occlusal analysis system (Dental prescale II, GC corp., Tokyo, Japan) for comparison. Throughout the treatment process, the intraoral scanner and the conventional articulating paper method showed similar outcomes. The results suggest that the use of digital evaluation system is highly probable in the near future.

• The korean journal of orthodontics
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• v.37 no.4
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• pp.260-271
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• 2007

The purpose of this study was to evaluate the relationships between the occlusal plane angle and craniofacial skeletal pattern in relation to anterior overbite. Methods: Lateral cephalograms of 90 adults with skeletal class III malocclusions were traced and measured to analyze skeletal factors and occlusal plane angles. In terms of anterior overbite, all patients were classified into 3 subgroups of positive overbite, edgebite, and negative overbite groups. All measurements were evaluated statistically by ANOVA and Duncan's Post Hoc, and correlation coefficients were evaluated among measurements. Results: In this study, some skeletal measurements (saddle angle, articular angle, Y axis, AFH, SN-FH, SN-Mn, FH-Mn) showed a significant difference among the 3 groups in relation to overbite changes. Correlation coefficient showed that PFH/AFH, SN-Mn, Mx-Mn, and FH-Mn showed a significant difference with FH-Occ, Mx-Occ, and Mn-Occ. Regression analysis showed that Mx-Mn had a determination coefficient of 0.714, 0.560, and 0.677 in relation to FH-Occ, Mx-Occ, and Mn-Occ, respectively. Conclusion: This study suggests that consideration of the occlusal plane in relation to the maxillomandibular vertical skeletal state enable the establishment of a more predictable orthognathic surgery result.

• The korean journal of orthodontics
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• v.34 no.3 s.104
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• pp.229-240
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• 2004

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 korean journal of orthodontics
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• v.33 no.3 s.98
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• pp.141-150
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• 2003

The purposes of this study were to classify the anteroposterior and vertical skeletal pattern of normal occlusion samples into specific types with factor and hierarchical cluster analysis, and to evaluate the range and limit of skeletal relationships that permit the establishment of normal occlusion via natural dentoalveolar compensation. Lateral cephalograms of 294 normal occlusion samples were measured, as selected from 15,836 persons through a community dental health survey who cooperated in record taking. Using a factor analysis, two factors representing anteroposterior and vertical skeletal relationships were extracted from 18 skeletal measurements. Then cluster analysis classified the skeletal patterns into nine types. The means and the standard deviations of 8 anteroposterior skeletal measurements and 10 vertical skeletal measurements were determined and comparisons of these measurements among the types were performed. The results obtained in this study showed that the range of normal occlusion included very diverse anteroposterior and vertical skeletal relationships.

• The korean journal of orthodontics
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• v.25 no.4
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• pp.487-495
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• 1995

This study was undertaken to compare each maximum biting force and to investigate its relationship with the facial skeketal form, number and position of tooth contact between anterior openbite and normal occlusion adults, using the T-scan system and the lateral cephalogram. The subjects of this study consisted of a group of 25 individuals with normal occlusion and another group of 14 with anterior openbite. The obtained results of this study were as follows : 1. The maximum biting force of anterior openbite adults was less than that of normal occlusion adults. 2. In anterior openbite adults, there were negative correlations between the maximum, biting force and SN/MP, FMA, PP/MP mesurement of lateral cephalogram. 3. In anterior openbite adults, as the mesial angulation of lower first molar against the occlusal plane increased, the more the biting force decreased. 4. In both groups, the greater the number of tooth contact, the more the biting force increased. 5. In both groups, the center of effort for anteroposterior occlusal contact was located on the first molar region.

• The Journal of the Korean dental association
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• v.34 no.3 s.322
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• pp.160-162
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• 1996

같은 급의 부정교합이라도 악골의 수직 수평관계, 악골과 치아의 크기에 따라서 여러 유형으로 분류된다. 여러 유형에 따라 치료방법에도 일률적일 수 없고 다양하게 된다. 진단과 치료계획 수립 시에 종종 어려움을 겪게 되는 경우가 있다. 진단의 어려움을 겪는 경우는 발치할 것인지 여부, 어떤 치아를 발치할 것인지, 악궁과 치아크기의 부조화를 어떻게 해소시킬 것인지 들의 결정을 내릴 때이다. 이런 경우 정확한 두부방사선분석 석고모형 분석, 성장과 발육분석에 의하여 판단하며 무엇보다 술자의 능력에 맞게 최선의 방법을 선택하는 것이 중요하다. 부정교합의 유형에 따라 다양한 발치 등 방법을 보고하고자 한다.

• The Journal of Korean Academy of Prosthodontics
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• v.53 no.2
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• pp.128-137
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• 2015

Purpose: Most of the former studies about the occlusal contact patterns during the mandibular movement focused on foreigner. The purpose of this study is analyzing the occlusal contacts of young Koreans by using T-Scan system. Materials and methods: The sample size was 87 and the occlusal contacts of each right and left lateral movements were measured from the maximum intercuspation to the 3mm excursive position for three times respectively. All of the occlusal contacts were double checked through the thin metal foil. The results were categorized as two; 1) considering occlusal contact patterns on working side only, 2) considering occlusal contact patterns on working and nonworking sides. Results: The results showed that the nonworking side occlusal contacts play major roles in the lateral mandibular movement. In both cases of considering with and without the nonworking side occlusal contacts, the group function was the most prevalent. In the working side, the contacts were the most frequent in canine and the frequency of contacts was decreased as the distance was increased from canine to molar. In the nonworking side, the contacts were the most frequent in second molar. And the gender factor was statistically significant (${\alpha}$=.05), as females have more nonworking side occlusal contacts in this study. Conclusion: Among the three factors of anterior guidance, the group function was the most dominant factor. The analysis of 87 samples showed that canine contact was the most frequent in the working side and second molar contact was the most common in the nonworking side.

• Journal of Dental Rehabilitation and Applied Science
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• v.26 no.2
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• pp.157-168
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• 2010

Many athletes have been using occlusal stabilization appliances to improve their performance. Few studies have examined the benefits of such an appliance in golf. We determined the effect of such appliances on the masticatory muscle activities and driving distances of professional golf players. The appliances were customized for each player and adjusted using a computerized device. The electromyographic muscle activities and driving distances with and without the appliance were measured and compared using the K7 Analyzer and the GolfAchiever II assembly. A paired t-test was used for statistical analysis. The muscle activities of the temporo-frontal and masseter muscles with the appliance were significantly more stable than those without the appliance, and the driving distances with the appliance were significantly different from those without it. Although there were intra-individual differences, professional golf players with temporomandibular disorders showed a greater improvement in performance.

• Journal of Oral Medicine and Pain
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• v.15 no.1
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• pp.45-53
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• 1991

저자는 두개하악 장애로 교합상치료를 받고있는 42명의 환자를 대상으로 치료전, 치료후 1개월, 3개월, 6개월째에 주관적 평가, 임상적 검사, 근전도 검사, 컴퓨터 교합 분석을 시행하여 다음과 같은 결론을 얻었다. 1. 주관적 평가인 visual analogue scale과 Helkimo's anamnestic dysfunction index는 유의하게 감소하였다. 임상적 검사시 MM(mandibular movement), TM(TMJ capsule palpation), EM(extraoral muscle palpation), Di(Helkimo's clinical dysfuction index)는 유의하게 감소하였고 무통성 개구량은 유의하게 감소하였다. 2. 42명의 환자중 10명에서 교합변화가 관찰되었으며, 5명에서 치주질환, 2명에서 치아 과민감, 1명에서 구토경향이 관찰되었다. 3. 치주칠환을 보이는 10명의 환자중 3명은 교합상치료 이전부터 치주질환에 이환된 상태였으며 3명에서는 교합변화가 함께 관찰되었다. 4. 교합변화를 보인 10명의 환자중 교합상의 장착시간을 줄였을 때, 3명이 원래의 교합상태로 회복되었고 4명은 부분적으로 회복되었으며 3명에서는 변화를 관찰할 수 없었다. 5. 악관절 내장 제 5기 환자에서 교합변화가 더 빈번히 나타났으며 통계적으로 유의한 차이를 보였다. 6. Habitual clenching 시와 Maximal clenching 시 사이의 치아접촉점 수, maximal clenching 시의 치아 접촉점의 수와 접촉 치아수 사이에 매우 유의한 상관관계를 보였고, habitual clenching 시의 치아접촉점의 수와 접촉 치아수, Habitual clenching 시와 maximal clenching시 사이의 치아 접촉시간에서도 유의한 상관관계를 보였다.