• 대한장애인치과학회지
• /
• 제3권2호
• /
• pp.91-96
• /
• 2007

치과의사는 쇄골두개 이형성증의 특징에 대해 잘 알고 있어야 한다. 쇄골두개 이형성증 환자는 신체 및 정신적으로 특별한 이상을 보이지 않기 때문에, 영구치교환시기를 한참 지나 다수치아에서의 유치만기잔존 및 영구치의 미 맹출을 주소로 치과에 내원하게 되는 경우가 많은 것이 사실이다. 이런 의심이 들 때는 정확한 진단을 위해 반드시 다양한 방사선사진을 촬영해 보아야 하겠다. 또한 긴 치료기간으로 인해 환자의 협조와 여러 분야에 있어서 전문가들의 협력이 반드시 필요할 것이다.

• 대한치과보철학회지
• /
• 제53권1호
• /
• pp.26-38
• /
• 2015

과도한 수평 및 수직피개를 가진 과개교합 환자에서 치질의 파괴 및 대합치 정출의 문제를 흔히 관찰할 수 있다. 이는 곧 교합평면의 붕괴와 부적절한 전방유도로 이어지며, 조화로운 교합관계의 회복이 이루어지지 않으면 다수의 치아 상실과 저작기능의 감소를 야기하게 된다. 과개교합환자의 문제를 해결하려면 교정과, 구강외과 및 보철과의 협진이 이루어져야 한다. 본 증례보고는 심한 과개교합을 가진 환자에서 수직교합고경을 증가시킨 후 완전구강회복을 이룬 증례를 보고하고자 한다. 치료는 구외 및 구내검사, 진단 및 치료계획, 진단 납형형성, 분절골 절단술, 교정적 함입 및 보철치료 순으로 진행되었다. 수직고경증가를 동반한 완전구강회복술로 환자의 심미적, 기능적 문제를 해결할 수 있었다.

• 한국축산식품학회지
• /
• 제35권4호
• /
• pp.486-493
• /
• 2015

This research focuses on a new softening technology for use with chicken breast and eye of round beef in order to assist elderly individuals who have difficulty with eating due to changes in their ability to chew (masticatory function) or swallow. We investigated the hardness of chicken breast and eye of round beef through use of a texture analyzer after injection of a commercial enzyme. Among 7 commercial enzymes, bromelain and collupulin exhibited a marked softening effect on the tested chicken breast and eye of round beef given a 1.00% enzyme concentration. The hardness of bromelain-treated chicken breast reached 1.4×10⁴ N/m², of collupulin-treated chicken breast reached 3.0×10⁴ N/m², and of bromelain-treated eye of round beef reached 3.2×10⁴ N/m², respectively, while their original shapes did not change. To find the level of tissue degradation with specific enzyme concentrations, enzyme injections at 0.1%, 0.25%, 0.50%, and 1.00% concentration of bromelain and papain were also evaluated. The results of this research could be useful for softening chicken breast and eye of round beef and will contribute to the development of foods that can be more easily eaten as part of a balanced diet for elderly adults.

• 대한치과보철학회지
• /
• 제56권4호
• /
• pp.347-353
• /
• 2018

치아의 마모는 나이가 들어감에 따라 진행되는 정상적인 과정이지만, 과도한 마모는 교합 부조화, 기능 및 심미적인 문제를 가져온다. 특히, 구치부 지지가 상실된 경우 전치부 치아의 마모와 수직 고경의 감소가 발생할 수 있고 이로 인하여 측두 하악 관절 장애 및 비심미적인 안모 변화, 저작 효율 감소가 일어날 수 있다. 본 증례의 환자는 70세 남자 환자로 심한 치아의 마모로 인한 수직 고경 상실로 심미적인 회복을 위해 내원하였으며 구강 검사, 방사선 검사, 진단 모형 검사를 통해 수직 고경을 평가하고, 수직 고경 증가를 동반한 가철성 국소의치로 수복을 결정하였다. 10개월 간의 관찰 결과 안정적으로 교합이 유지되고 있는 것을 확인하였고, 환자의 기능적, 심미적인 만족을 얻었다.

• 구강회복응용과학지
• /
• 제17권4호
• /
• pp.231-244
• /
• 2001

This study was conducted to observe the effect on appendage muscle strength according to increase in occlusal vertical dimension. For this study, ten males with a mean age of 21 were selected. The subjects had a complete or almost complete set of natural teeth and reported no subjected symptoms of pain or dysfunction in the masticatory system. The tested occlusal splints were made at the position of increased occlusal vertical dimension of 2mm, 3.5mm, and 5mm from the ICP. Before and after wearing occlusal splints, the appendage muscle strength were tested by CybexII Dynamometer in each subject. The results were as follows : 1. When occlusal vertical dimension was increased, most of mean muscular strength values were increased except for those of supination and pronation of forearm at the position of 5mm increased occlusal vertical dimension. 2. The statistical analyses demonstrated that the increased occlusal vertical dimension position to be significantly stronger than intercuspal position for the muscle strength of the flexion and extension of hip, supination of forearm, external and internal rotation of knee, dorsiflexion and plantarflexion of ankle (p<0.05). 3. At the position of 3.5mm increased vertical dimension displayed the highest mean muscluar strength value than other positions. 4. Statistically demonstrated values, except for supination of forearm, internal rotation of shoulder, were related to lower appendage. Therefore splint was more effective on lower appendage than upper appendage to make muscle strength increased. 5. The mean increased rate of muscular strength tested on knee(57%), ankle(42%), and wrist(20%) were higher than hip(31%), elbow(14%), and shoulder(17%).

• Journal of Oral Medicine and Pain
• /
• 제40권3호
• /
• pp.115-123
• /
• 2015

Purpose: The aim of this study was to elucidate the coordination patterns of the sternocleidomastoid and posterior cervical muscles in response to symmetrical and asymmetrical jaw functions in normal adults. Methods: Twenty-seven healthy volunteers (8 females, 19 males; mean age, $30.4{\pm}2.5$ years) participated in this study. Surface electromyography (EMG) was used to record activities in the masseter, suprahyoid, sternocleidomastoid, and posterior cervical muscles at rest and during maximum tooth clenching, biting of a cotton roll with the anterior teeth, unilateral biting of a cotton roll with the posterior teeth, bilateral biting of cotton rolls with the posterior teeth, and jaw opening while seated. Normalized amplitude, activity indices, and asymmetry indices were compared between the muscles and the jaw tasks. Results: During symmetrical jaw functions (e.g., tooth clenching, biting with the anterior teeth, bilateral biting with the posterior teeth, jaw opening), the sternocleidomastoid and posterior cervical muscles showed elevated EMG amplitudes compared with the resting condition. The co-activation pattern of the sternocleidomastoid muscle was more pronounced than those of the posterior cervical muscles during these tasks. During asymmetrical jaw functions (e.g., unilateral biting with the posterior teeth), the ipsilateral sternocleidomastoid and masseter muscles showed higher contraction activity than did the contralateral muscles, but the contralateral posterior cervical muscles were more active than the ipsilateral muscles. Conclusions: The sternocleidomastoid and posterior cervical muscles were shown to be co-activated and coordinated anteroposteriorly or bilaterally according to symmetrical or asymmetrical jaw function. These results suggest an integrated neural control mechanism for the jaw and neck muscles, and provide further evidence supporting the intimate functional coupling between the trigeminal and cervical neuromuscular systems.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제28권1호
• /
• pp.73-79
• /
• 2006

The management of mandibular prognathism and retrognathism was revoluted by the advent of the technique of bilateral sagittal split ramus osteotomy(BSSRO) as described by Obwegeser and Trauner in 1957. The BSSRO of the mandible has been used for nearly 50 years and has undergone numerous modifications and improvements. Most patients, treated by this surgical operation, express their satisfaction with improved facial esthetics, masticatory function and others. But several complications associated with BSSRO may appear. Especially among them, facial nerve palsy following BSSRO is rare but serious problem. We treated for facial nerve palsy following BSSRO by physical therapy, steroid therapy and surgical intervention and then the result was favorable. Therefore we would like to report a case about a patient with facial nerve palsy after BSSRO with a review of the literatures.

• 구강회복응용과학지
• /
• 제21권1호
• /
• pp.43-57
• /
• 2005

Temporomandibular disorders have been defined as a collective term embracing a number of clinical problems that involve the temporomandibular joint, the masticatory nuscles, and associated structures. There have been many different contributing factors of TMDs which were traumatic, occlusal, pathophysiological and psychosocial. Among there factors, the effect of occlusion on TMDs have been a controversy for a long time. The purpose of this study was to investigate the effect of occlusal factors and oral habits on TMDs. In this study, 140 subjects with signs and symptoms of TMDs and diagnosed of TMD in the Orofacial Pain clinic of Yonsei University Dental Hospital though March to July 2004 were selected for the TMDs group and 50 subjects without any signs and symptoms of TMDs as the control group. The subjects were evaluated clinically in TMDs' Occlusal and Prosthodontic Restoration examinations. TMDs' examination was composed of the TMJ pain, sound, locking, temporal or masseter muscle palpation, mandibular movement, oral habits and headache. Occlusal examination was made of overjet, overbite, lost teeth number, nonfunctional interference, midline shift, then pattern of lateral movement and attrition. prosthodontic restoration examination had the existence of restoration, placement, then number of crown or bridge and Satisfiable index which estimated the quality of occlusal state of prosthodontic restorations. Following results were obtained : 1. The prevalence of TMDs was higher in their 20s & 30s, female of the TMD patients group. 2. The clenching frequency in the TMDs group(40.71%) was higher than those in the control group(18.00%), and there was a significant statistical difference(p<0.05). 3. The frequency of Nonfunctional interference in the TMDs group(10.00%) was higher than those in then Control group(2.00%), and there was a significant statistical difference(p<0.05). The result of this study indicated TMDs prevalence was higher in their 20s, 30s, female group of TMDs patients similar to the previous studies. Clenching and nonfunctional interference were estimated as the contributing factors of TMDs.

• 구강회복응용과학지
• /
• 제27권3호
• /
• pp.305-316
• /
• 2011

균열치는 저작운동과 온도자극에 대한 치아의 통증을 호소하는 환자에서 자주 발견되는 질환으로 균열의 진행정도에 따라 다양하게 분류할 수 있다. 가장 흔한 원인으로는 저작과정 중의 갑작스러운 사고로 알려져 있지만 대부분 증령, 기존 수복물 또는 의원성 응력집중과 같은 기여요인이 있을 때 발생한다. 균열의 진행정도 및 치수침범에 대한 정확한 진단이 필수적이며 저작시 통증을 확인한 후 균열을 가급적 눈으로 확인하는 것이 좋다. 이를 위해 투과광이나 염색과 같은 보조적 방법을 이용할 수 있다. 치료는 즉각적인 통증완화를 위한 교합조정이나 파절편 고정이 필요하며 치수의 상태에 따라 근관치료가 추가적으로 필요할 수도 있다. 궁극적인 치료로는 복합레진이나 접착 아말감으로 균열부위에 가해지는 충격을 완화시킨 후 주조수복물을 이용한 교두보호가 필요하다. 이 논문에서는 균열치에 대한 다양한 원인, 치료, 예후 등에 관한 문헌을 고찰할 것이다.

• 구강회복응용과학지
• /
• 제33권3호
• /
• pp.207-215
• /
• 2017

총의치 치료에서는 지지, 유지, 안정, 교합, 심미 등 고려할 요소가 많으나 치조골 흡수가 심한 경우, 해당 요인을 갖추기 어렵다. 해부학적 치아를 사용할 경우 좋은 저작효율과 심미성을 기대할 수 있으나, 흡수된 치조골에서는 안정이 저하될 수 있으며 비해부학적 치아는 이와 반대의 효과를 나타낸다. 이에 치아를 혼용하는 설측 교두 교합이 제시되었다. 설측 교두 교합에서 상, 하악 협측 교두는 중심위, 측방위에서 접촉되지 않고 교합접촉위치가 설측화 또는 중심화되어 의치의 안정성이 증대될 수 있다. 본 증례는 상하 치조제의 흡수가 진행되어, 상악에서 편평한 치조제를 보이는 경우로, 설측 교두 교합을 이용한 총의치를 이용하여 치료함으로써 의치의 안정성과 환자의 만족도를 높였기에 이를 보고하는 바이다.