• 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 Journal of Korean Academy of Prosthodontics
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• v.61 no.2
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• pp.160-178
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• 2023

Diagnosis and analysis of occlusal relationships are important factors in prosthetic treatment. A thorough occlusion analysis and evaluation should be performed before treatment to restore a stable interocclusal relationship. Analysis and evaluation are essential during the treatment process and at regular follow-ups. Recently, with the development of dental equipment and digital processing methods, new quantitative analysis methods that can record the patient's occlusal relationship have been introduced. Among them, the T-Scan Novus (Tekscan Inc., S. Boston, MA, USA) displays the strength of the initial contact point and the occlusal contact point of the teeth using a pressure sensor. With this, occlusal contact time of the teeth, anteroposterior and left-right balance of occlusal force can be compared. The Dental prescale II (GC Co., Tokyo, Japan) scans the occlusal contact point using a pressure-sensing film and analyzes the density of the contact point. It can measure the distribution and strength of the occlusal force of the teeth in the most natural occlusion state. Based on this, appropriate prosthetic treatment (four-unit fixed partial denture, removable partial denture, complete denture, and complete oral restoration cases) was performed according to the area and extent of the patient's tooth loss. The patient's occlusion at the first visit, treatment stage, right after treatment, and regular follow-up were compared and evaluated using a quantitative method for appropriate occlusion analysis using T-Scan Novus and Dental prescale II. This report enhances the understanding of occlusion analysis during prosthetic restoration. The results satisfied both the clinician and patients in terms of function and aesthetics.

• The korean journal of orthodontics
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• v.35 no.1 s.108
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• pp.69-81
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• 2005

As one of the variations in growth and development of the craniofacial complex. malocclusion shows lack of concordance In the recognition and severity of malocclusion for dentists as well as the acceptance and need of orthodontic treatment for the patient The purposes of this study were 1) to examine the relationships between objective malocclusion severity aid subjective treatment difficulty. 2) to evaluate the effect of malocclusion components to the subjective perceived difficulty of treatment. 3) to establish the weighted values of malocclusion components to reflect the treatment difficulty 100 pairs of dental casts with the general characteristics of malocclusion. were selected from the orthodontic departments of Kyunghee University and Samsuug Medical Center. The severity of malocclusion was evaluated by the author with the PAR index The perceived treatment difficulty and the estimated treatment duration on these dental models were evaluated by 8 experienced orthodontists. The relationships between the objective malocclusion severity and the subjective treatment difficulty were statistically evaluated. and the weighted values of malocclusion components to reflect treatment difficulty were statistically formulated. There were significant relationships between objective malocclusion severity and subjective treatment difficulty The malocclusion components which significantly affected the treatment difficulty and their weighted values in parentheses were as follows upper anterior alignment(1). overbite (2). buccal occlusion (3) middline (4), and overjet (5). This study Provides the fundamental principle to evaluate the objective malocclusion severity which is reflected by the subjective treatment difficulty of Korean orthodontists.

• 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.

• The Journal of Korean Academy of Prosthodontics
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• v.58 no.2
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• pp.121-129
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• 2020

From the point of view of oral rehabilitation, the treatment of extensive tooth wear requires a prosthetic approach. Physiological tooth wear is considered as a normal process and generally does not require treatment, but excessive tooth wear causes problems like inadequate occlusion and esthetics. Changes of occlusal vertical dimension should be made through accurate diagnosis and analysis. Also, the patient's adaptation to the changed occlusal vertical dimension should be assessed over time. This case was a 60-year-old male patient who complained of a decrease in chewing function and esthetics due to severe tooth wear. Full-mouth rehabilitation was performed with a tooth supported fixed prosthesis. An occlusal stabilization splint and provisional restoration were used to evaluate the adaptation to increased occlusal vertical dimension and induce a stable centric relation position. After that, monolithic zirconia prosthesis was delivered. We report this as a satisfactory functional recovery and esthetics.

• The korean journal of orthodontics
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• v.35 no.1 s.108
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• pp.60-68
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• 2005

The evaluation of malocclusion has to be done quantitatively and qualitatively. This will be lead toward an analysis of malocclusion severity as well as treatment difficulty. The method of proper evaluation of malocclusion severity and treatment difficulty is necessary to assess treatment effect and efficiency for the orthodontists and to establish fundamentals for planning and executing the health-related policies in private and public institutions. The purposes of this study as the first part of the objective and quantitative analysis of malocclusion were 1) to measure treatment difficulty based on the opinions of several orthodontists. and 2) to investigate the relationships between objective malocclusion severity and subjective treatment difficulty 100 pairs of dental casts that had various types and severity of malocclusion were selected from the orthodontic departments of Kyurghee University and Samsung Medical Center The objective malocclusion severity was measured with the PAR (Peer Assessment Rating) index and the subjective treatment difficulty was evaluated by 8 experienced orthodontists. The relationships between objective malocclusion severity and subjective treatment difficulty were statistically evaluated. There were significant relationships between objective malocclusion severity and subjective treatment difficulty especially in the measurements of the upper anterior alignment, the buccal occlusion. the overjet, the overbite and the midline discrepancy en the malocclusion components. The results of this study can provide the background knowledge to develop a new occlusal index. which contains both the malocclusion severity and treatment difficulty for Korean orthodontists.

• Journal of Oral Medicine and Pain
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• v.24 no.1
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• pp.49-58
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• 1999

저자는 하악의 위치변화가 저작근에 미치는 영향을 근전도학적으로 평가하고자, 측두하악장애의 징후와 증상이 없는 정상성인 28명을 대상으로 중심위 교합장치(centric relation splint), 중심교합위 교합장치(centric occlusion splint), 전방 재위치 교합장치(anterior repositioning splint)를 장착시킨 상태에서 하악의 중심의, 중심교합위, 전방위률 유도한 후 최대 이악물기 상태의 좌우측 교근 및 전측두근의 근전도를 채득, 분석, 평가한 결과 다음과 같은 결론을 얻었다. 1. 전측두근에서 하악의 위치변화에 따른 최대 근활성도의 차이가 나타났으나(p<0.05), 교근에서는 나타나지 않았다. 2. 전측두근의 경우 중심교합위에서 최대 이악물기 상태의 최대 근활성도는 교합 장치물을 장착하지 않은 경우 및 중심위에서와 비교하여 감소하였다(p<0.05). 3. 전측두근의 경우 전방위에서 최대 이악물기 상태의 최대 근활성도는 교합 장치물을 장착하지 않은 경우 및 중심위에서와 비교하여 감소하였다(p<0.001). 4. 교근과 전측두근의 좌우 비대칭지수(asymmetry index)는 하악의 위치변화에 따른 차이가 나타나지 않았다.

• Journal of Oral Medicine and Pain
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• v.20 no.1
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• pp.205-215
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• 1995

저자는 두개하악장애 환자에 대한 교합장치 치료시 group function 교합이 있는 환자에서도 canine guidance교합으로 변화시켜 치료함이 정당한지를 근전도학적 측면과 임상적 측면에서 알아보고자 Group function 교합을 가진 20명의 두개하악장애환자와 10명의 정상인을 대상으로 교합장치치료 전, 도중, 후의 좌우측 교근 및 전측두근의 근전도를 측정하고 두개하악장애지수를 조사한 수 이들 자료를 분석 평가하여 다음과 같은 결론을 얻었다. 1. 정상인군에서 최대이악물기상태의 좌우측 교근 및 전측두근의 근전도는 교합장치치료 도중의 cannine guidance교합시가 교합장치치료전후의 group function 교합시에 비해 낮게 나타났다(P<0.01). 2. 두개하악장애군에서 최대이악물기 상태의 좌우측 교근 및 전측두근의 근전도는 교합장치치료 도중의 canine guidance교합시 교합장치치료전후의 group functin교합시에 비해 낮게 나타났다. (P<0.01). 3. 두개하악장애지수는 교합장치치료 전에 비해 치료 후 감소되는 경향을 나타냈었다(P<0.01)

• The korean journal of orthodontics
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• v.30 no.1 s.78
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• pp.91-99
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• 2000

This study was done to identify the changes of bite force and occlusal contact between before and after stabilization splint therapy. 16 female patients, accepted for orthodontic treatment at the Department of Orthodontics, College of Dentistry, Chosun University, were selected as the sample of this investigation. For comparisons, the samples of 16 were divided into just before stabilization splint, 1 month after stabilization splint, 2 months after stabilization splint, and 3 months after stabilization splint and used the T-scan system to identify the bite force and occlusal contact changes for each group. Statistical analysis of the data was carried out ANOVA tests, and Turkey tests using $SPSS/PC^+$. The results were as follows : 1. Bite force change from just before treatment to 1 month after stabilization splint therapy was statistical significantly decreased (P<0.05). 2. Bite force changes from 1 to 3 months after stabilization splint therapy showed no statistical significance (p>0.05). 3. The changes of anterior occlusal contacts showed no statistical significance regardless of the wearing periods of stabilization splint (P>0.05). 4. The changes of posterior occlusal contacts from just before treatment to 1 month after stabilization splint therapy was statistical significantly decreased (P<0.05). 5. The changes of posterior occlusal contacts Outing 1 to 3 months after stabilization splint therapy showed no statistical significance (P>0.05). 6. Posterior teeth rather than anterior teeth were more influenced by the changes of the number of occlusal contacts. To sum up above results, we may respect to capturing and stabilizing centric relation Position just 1 month after stabilization splint therapy.

• 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).