• Journal of Oral Medicine and Pain
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• 제22권2호
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• pp.295-307
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• 1997

This study was performed to investigate the reproductibility of eccentric mandibular movements according to preferred chewing side, range of mouth opening, type of lateral guidance and involvement of temporomandibular disorders. 50 patients with temporomandibular disorders and 65 dental students without any signs and symptoms were randomly selected for this study as the patients group and the control group, respectively. For recording and observation of eccentric mandibular movement trajectory, BioEGN$^\textregistered$ of Biopak$^\textregistered$ system (Bioresearch Inc., USA) was used. Each eccentric movement to anterior, right and left side was performed three times similar to the movement pattern for Pantronic Reproducibility Index. mandibular path was analyzed by three dimensional positional change and the three paths from one direction were compared with one another. From this, reproducibility index of one-directional lateral movement could be calculated, and total reproducibility index, named BioEGN reproducibility index(BERI), was also computed from three-directional eccentric movement likewise. BioEGN reproducibility Index could have four value of score by small or large scale, and by outgoing or incoming movement. The data were analyzed by SAS/stat program and the results obtained were as follows: 1. Right side chewing subjects showed more consistent pattern In reproducibility index in comparison between patients group and control group than left chewing subjects have done, and reproducibility was low in patients group. However, there was no difference between the two stoups in bilateral chewing subjects. 2. There were no difference in reproducibility index between preferred chewing side and contralateral side in unilateral chewing subjects whereas reproducibility index in left side on outgoing movement were higher than in right side in bilateral chewing subjects. 3. Difference in total reproducibility index(BERI) between canine guidance group and non-canine guidance group were not observed though difference in reproducibility index on lateral movement were observed in part. 4. There were no difference in reproducibility index between affected side and contralateral side in unilaterally affected patients, and between unilaterally affected patients and bilaterally affected patients in patients group. 5. Highly significant positive correlationship were shown among the four 쇼pes of total reproducibility index(BERI) in total subjects, and range of clinical mouth opening was negatively correlated with BEBI on outgoing movements and with index on outgoing movement to preferred side.

• The Journal of Advanced Prosthodontics
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• 제4권3호
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• pp.153-157
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• 2012

PURPOSE. The study was conducted to compare the radiographic and clinical methods of measuring the horizontal condylar guidance (HCG) values. MATERIALS AND METHODS. The condylar guidance was measured using the radiographic (CT scan) and three clinical methods i.e. the wax protrusive records, Lucia jig record and intraoral central bearing device in 12 patients aged between 20-40 years irrespective of sex. The records were taken and transferred on the semi-adjustable articulator to record the HCG values. The CT scan was taken for 3D reconstruction of the mid facial region. Frankfort horizontal plane (FHP) and a line extending from the superior anterior most point on the glenoid fossa to the most convex point on the apex of articular eminence (AE) was marked on the CT scan. An angle between these two lines was measured on both right and left sides to obtain condylar inclination angle. Three interocclusal protrusive wax and jig records were taken and transferred to the semi adjustable articulator. Three readings were recorded on each side. Similarly the records were taken and transferred to the same articulator using the intra oral central bearing device to record the readings. RESULTS. The statistical analysis showed insignificant differences in the HCG values between the right and left sides [(P=.589 (CT), P=.928 (wax), P=.625 (jig), P=.886 (tracer)]. The clinical methods provided low Pearsons correlation values [(R = 0.423 (wax), R = 0.354 (jig), R = 0.265 (tracer)] for the right as well as the left sides when compared with the CT values. Among the clinical methods, jig and wax method showed strong level of association which is statistically significant while the intra-oral tracer showed weak association with the other two methods. CONCLUSION. The right and left HCG values were almost similar. The CT scan showed higher HCG values than the clinical methods and among the clinical methods, values obtained from all the methods were comparable.

• 대한치과보철학회지
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• 제55권4호
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• pp.410-418
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• 2017

법랑질 형성 부전증은 유전적인 결함으로 인해 구조적으로 약한 법랑질이 형성되는 질환이다. 이들 환자들은 이른 나이부터 진행되는 법랑질 마모에 의한 시린 증상과 비심미적인 치아를 주소로 치과에 내원하게 되며, 성장기 이후에는 전악 보철 수복을 통해 치아의 기능성과 심미성을 회복해 주게 된다. 법랑질 형성 부전증 환자에서 보여지는 전치부 개방 교합은, 구치의 교합면 마모 및 보상성 맹출에 의한 수직적 수복 공간 문제와 결부되어 보철 치료를 어렵게 하는 요인이 된다. 따라서 전치 길이의 결정 및 교합 고경의 거상 여부, 전방유도의 설정은 신중히 결정되어야 한다. 근래에는 Computer aided design-computer aided manufacturing (CAD/CAM) 기술을 이용하여 진단 및 최종 수복으로의 이행이 용이해 졌다. 본 증례에서는 전치부 개방교합을 가지고 있는 법랑질 형성 부전증 환자에서, CAD/CAM을 이용한 전악 수복을 시행한 후, 양호한 경과를 보이고 있기에 이를 보고하고자 한다.

• 대한치과보철학회지
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• 제51권3호
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• pp.199-207
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• 2013

연구 목적: 저작 및 하악 운동시 발생되는 치아접촉은 치열의 보존, 하악의 안정과 보철 수복과정에 있어서 중요하다. 이에 한국인의 20-30대 성인을 대상으로 최대교두감합위에서의 치아접촉점의 위치 및 교합유도양상과 교합유도치의 분포를 분석하여 알아보고자 한다. 연구 대상 및 방법: 29명의 성인을 대상으로 하악의 최대교두감합위에서의 치아접촉점의 위치와 분포 및 전방운동시 교합접촉양상을 shimstock foil (Whaledent, Langenau, Germany), T-Scan III (Tekscan Inc., Boston, MA, USA), polyvinylsiloxane registration material (Genie Bite, Sultan Healthcare, Hackensack, NJ, USA)을 이용하여 측정하였다. 측정시 자세는 직립위로 Frankfurt horizontal plane과 지면이 수평이 되도록 앉게 하였으며 접촉이 재현될 때까지 수 차례 반복한 후 3회씩 측정하였다. 최대교두감합위에서 세가지 방법 간의 통계적 유의성을 비교하기 Fisher's Exact Test (R-General Public License, ver. 2.14.1)를 이용하였고, 전방 운동시 Pearson's Test를 통해 통계 검증하였다(${\alpha}=.05$). 결과: 최대교두감합위에서의 치아 접촉 양상을 shimstock foil, T-Scan III, polyvinylsiloxane registration material로 측정시 전치부, 소구치부, 구치부 모두에서 접촉하는 경우가 대부분이었으며, shimstock 사용시 약51%의 최대교두감합위는 전치부 접촉에서 일어났다. Shimstock foil과 T-Scan III를 사용하여 전방운동 측정시 중절치의 접촉이 가장 많이 일어났다. 결론: 최대교두감합위에서 실제 모든 치아의 접촉이 이루어지지 않는 경우가 있었으며 따라서 구치부에서 전치부를 보호해 주고 있음을 확인할 수 있었다. 또한, 전방운동 시 전치부의 치아접촉은 과도한 구치부의 치아접촉을 방지해 전치부가 구치부를 보호해 주고 있었다. 따라서 교합 재구성 시에는 이러한 상호 보호 교합에 대한 고려가 필요하다.

• 대한통합의학회지
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• 제2권4호
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• pp.49-58
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• 2014

Purpose : The purpose of this study was to research the effects on resistance CKC & OCK exercise method on lower limb muscle activity, in chronic stroke patients. Method : In this study, 18 patients with stroke caused by hemorrhage or infarction were participated. resistance exercise method was conducted in tow different group : one is a close kinetic chain exercise(CKC) group and the other is an open kinetic chain exercise(OKC) group. CKC with physical therapy was applied to 9 patients, and OKC with physical therapy was applied to 9 patients. Under the researcher's guidance, exercise for CKC and OKC group carried out 3 times a week for 30 minutes during 4weeks. Result : There was significantly different for the vastus lateralis, tibialis anterior and gastrocnemius muscle activity within the intervention period both group. The vastus lateralis, tibialis anterior and gastrocnemius muscle activity was significantly increased within the CKC group. The vastus leteralis and tibialis anterior muscle activity was significantly increased within the OKC group. Conclusion : It was confirmed in this study that the CKC exercise was more effective than OKC exercise in improving lower limb muscle activity of chronic stroke patients. This study seggested that CKC may be suitable for individuals with a chronic stroke. furthermore study should be made a lot of researches regarding in other method and varying conditions for many hemiplegic patients.

• 대한치과보철학회지
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• 제55권1호
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• pp.79-87
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• 2017

전치부 개방 교합은 다양한 원인이 복합적으로 작용하고, 진단에 따라 효과적인 치료 계획과 적절한 유지 방법을 선택할 수 있다. 대부분의 경우 교정과 악교정 수술을 통해 안정적인 교합을 얻고, 기능과 심미를 회복한다. 하지만 전체 치열에서 심한 우식증이 있는 경우 광범위한 수복이 필요하게 되므로, 보철 수복을 통해서도 교합을 재형성할 수 있다. 본 증례는 심한 우식을 동반한 골격성 전치부 개방 교합 환자에서 안모 분석 및 진단 납형으로부터 가장 효과적인 치료로 전악 보철 수복을 선택하였다. 교합력을 균등하게 분산하고 심미적인 임시 수복물을 제작하였고, 악간 관계 평가, 혀 등 연조직의 적응, 입술과의 조화를 관찰하고 수정하였다. 충분한 기간 동안 사용한 임시 수복물을 CAD/CAM (Computer-aided design/computer-aided manufacturing)을 이용하여 단일구조 지르코니아 최종 보철물로 이행하였고, 치료 종결 후 3개월 간 주기적으로 관찰하였을 때 만족스러운 결과를 얻었다.

• 구강회복응용과학지
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• 제25권3호
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• pp.201-210
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• 2009

중심위는 교합적, 교정적, 보존적 관점에서 진단과 치료에 중요한 요소이며, 중심위에 대한 정의와 채득방법에 대하여서는 학자들마다 다양하게 주장하고 있다. 중심위를 채득하는 방법에는 여러 가지가 있고 임상적으로 가장 중요한 부분 중 하나가 재현성과 정확성을 확보하는 것이다. 이에 저자는 중심위 채득시 하악 과두의 운동접번축(kinematic axis)을 인식하는 Arcus $Digma^{(R)}$의 EPA test를 이용하여 중심위 채득 방법에 따른 재현성을 비교하였다. 구강 악안면계의 기능이상이 없으며 교합이 정상이고 치아의 교모 및 마모가 심하지 않은 성인 10명를 대상으로 5가지 중심위 채득 방법 (Self-guided method, Bimanual manipulation, Chin-point guidance, Leaf gauge method, Gothic arch tracer)에 따른 중심위의 재현성을 Arcus $Digma^{(R)}$를 이용하여 비교 연구한 결과 다음과 같은 결론을 얻었다. 첫째, 중심위 채득 방법에 따라 하악과두의 위치는 상이한 양상을 나타냈다. 둘째, 재현성은 bimanual manipulation이 가장 높게 나타났으며 다음으로 chin point guidance, Gothic arch tracer, leaf gauge를 이용한 방법 그리고 unguided method 순이었다. 셋째, 임상에서 양손조작법이나 chin-point guidance이 재현성면에서 비교적 매우 훌륭한 방법이라는 것을 미루어 알 수 있다.

• Restorative Dentistry and Endodontics
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• 제37권3호
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• pp.180-184
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• 2012

Traumatic injuries of the face often involve root fractures especially in anterior teeth. The prognosis and the treatment of the root fracture depend on the extent of the fracture line, general health and patient compliance. This case report outlines a new conservative trial treatment modality to stabilize the maxillary central incisors with horizontal root fracture on the cervical to middle third by fabricating canine guidance to remove loading on the traumatized maxillary central incisors during eccentric movements and thus inducing spontaneous healing of the fractured line between the fragments. Radiographs after thirty months showed adequate healing with no signs of pathological changes including root resorption, ankylosis or displacement. Long term follow-up revealed that vitality, stability and aesthetics were maintained and the patient was satisfied with the outcome.

• 한국컴퓨터정보학회논문지
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• 제28권2호
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• pp.143-151
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• 2023

이 연구는 남자대학생을 대상으로 점진적 스쿼트 운동시 하체 근활성도와 발바닥압력의 변화를 살펴보고 근전도와 스마트 슈즈를 이용하여 근육이 불균형을 확인 및 인지시키고 즉각적인 피드백을 제공하여 효율적인 운동지도에 도움이 되고자 실시되었다. 연구의 대상자는 D대학교 재학생으로 20명으로 실시하였다. 이 연구 결과 스퀴트 부하가 증가할수록 8개 근육 중 왼쪽 반힘줄모양근, 양쪽 앞정강근을 제외한 모든 근육의 활성도가 유의하게 증가하였으며, 발바닥 압력은 스쿼트 부하가 증가될 수 발앞부(FF)의 압력이 유의하게 증가하였고 발뒤부(RF)의 압력은 유의하게 감소하였다. 따라서 웨어러블 기기를 이용하여 즉각적인 피드백 제공은 근육의 불균형을 예방하고 효과적인 운동지도를 할 수 있을 것으로 생각된다.

• 대한치과보철학회지
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• 제29권3호
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• pp.43-53
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• 1991

It is important to harmonize the occlusion with TMJ and neuromuscular system. However, clinically, how to harmonize is very difficult. The mandibular movement is the motion in which all component part of stomatognathic system participate. This study was performed to compare mandibular movement of mandibular prognathic patients group with that of normal group, to ascertain which components of mandibular movement have differences between two groups, and to use for occlusal treatment of mandibular movement. Thirteen adult who have physiologically normal occlusion and are free of TMJ dysfunction were selected as a control group(Group 1). Eight adult who are mandibular prognathic patient and have more than four anterior teeth crossbite, therefore have not anterior guidance function and have posterior interference at protrusion were selected as a experimental group(Group 2). Electronic pantograph, Denar Pantronic (Denar Corp., U.SA.), was used to record mandibular movement. Pantronic survey was performed by using an arbitrary hinge axis according to manufacturer's direction. Of the Pantronic recordings, immediate side shift (ISS), progressive side shift (PSS), orbiting condylar path (ORB), protrusive condylar path (PRO) between two groups were compared and analysed. The results were as follows: 1. The average protrusive and orbiting condylar inclination of mandibular prognathic patient$(28.44^{\circ},\;36.94^{\circ})$ was significantly lower than those of normal group$(40.15^{\circ},\;48.00^{\circ})$ (P<0.01). 2. There was no statistically significant difference between .the average immediate and progressive side shift of mandibular prognathic patient $(0.37mm,\;6.19^{\circ})$ and those of normal group$(0.52mm.\;5.96^{\circ})$ (P>0.01). 3. The significant correlation was found between orbiting condylar inclination and protrusive condylar inclination.