• The Journal of Korean Academy of Prosthodontics
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• v.54 no.4
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• pp.379-386
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• 2016

Purpose: The present study aims at researching the subjective satisfaction of patients who have experienced both conventional impression taking and digital impression taking to measure the possibility of wide clinical application of digital impression. Materials and methods: The study surveyed 170 adult patients over the age of 20, between October 2015 and April 2016, who voluntarily consented to participation and who experienced both conventional impression and digital impression at five dental hospitals that use intraoral digital impression. A total of 128 surveys were used for data analysis, involving frequency analysis, multiple response frequency analysis, descriptive statistics, and contingency table analysis, with the significance level set at 0.05. Results: Responses on the reason for taking impressions using the digital method appeared in the order of 'for implant treatment' (43.8%), 'for crown treatment' (30.5%), and 'for inlay treatment' (15.6%). Patients satisfaction was higher for digital impression taking than conventional impression taking (P<.05). As the preferred choice of impression, digital impression (60.2%) was higher than conventional impression (11.7%). Responses on the reason for choosing digital impression taking appeared in the order of 'no vomiting reflex' (35.1%), 'reliability of 3D digital scanning' (33.8%), and 'short time' (33.8%). Conclusion: The patients preferred digital impression taking to conventional impression taking in terms of satisfaction.

• Journal of The Korean Dental Society of Anesthesiology
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• v.11 no.1
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• pp.9-15
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• 2011

배경: 술 후 통증은 술 후 합병증의 발생가능성을 증가시키며 생체기능의 회복을 방해한다. 술 후 통증을 효과적으로 조절하기 위해선 통증의 정도를 객관적으로 평가하는 것이 필요하다. 술 후 통증은 수술의 침습도와 관련이 높을 가능성이 많다. 본 연구에서는 수술 침습도의 정도와 술 후 통증의 정도 사이의 상관관계를 확인하고자 한다. 방법: 총 153명의 환자를 수술의 침습도에 따라 4개의 그룹으로 나누었다(그룹 1: 악성종양 수술 (malignancy surgery), 그룹 2: 양악수술(bimaxillary surgery), 그룹 3: 양성 종양수술(benign cancer surgery) 그룹 4: 임플란트 & 골절 수술(implant & frature)) 수술이 끝나갈 무렵 fentanyl 700 ${\mu}g$, ketorolac 1,500 mg (총 용적 120 ml)가 포함된 자가통증조절장치를 정맥로에 연결하였다. 술 후 통증의 정도는 시각통증등급(visual analogue scale)을 이용하여 측정하였고 자가통증조절장치의 총 사용시간, 투여된 진통제의 양, bolus 투여 총 횟수를 측정하였다. 결과: 술 후 시각통증등급은 술 후 1일부터 3일까지 그룹 1, 2 군에서 유의하게 높았다. 또한 시각통증등급 3점 이상의 통증을 호소하는 환자의 비율 역시 그룹 1, 2 군에서 유의하게 높았다. 진통제 총 투여용량 및 자가로 주입한 진통제의 양 역시 그룹 1, 2군에서 3, 4 군에 비해 유의하게 높은 것을 확인하였다. 결론: 본 연구결과 외과적 수술의 침습도가 술 후 통증의 정도를 결정하는데 있어 중요한 요소임 을 확인하였다.

• Journal of the Korean Academy of Esthetic Dentistry
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• v.23 no.2
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• pp.80-85
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• 2014

Orthodontic treatment is obviously the first choice to get aligned teeth cause of conservative treatment. But it is impossible to get highly esthetic result only orthodontic treatment in case of peg lateralis, discrepancy tooth size, discolored teeth or fractured teeth. As all treatment does, especially in esthetic treatment it is always required interdisciplinary diagnosis and treatment plan; orthodontics, periodontology, prothetics, implant therapy. As also, the treatment should be maintained long-term treatment with stable and harmonious state by esthetic satisfaction and functional occlusion those who needs various dental care as interdisciplinary treatment. This case is the laminate treatment with the orthodontic treatment on 37 ages/ Female patient who has cross bite at anteriors and premolar area and abrasion on centralis at right maxilla. By orthodontic treatment aligned teeth positions, it makes functional occlusion. As laminate treatment with minimum teeth preparation is able to release anterior esthetics. Follow up check for 2 years has been performed since the final prosthetics delivery to the patient. No sign of relapse, fracture of laminate were detected.

• The Journal of Korean Academy of Prosthodontics
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• v.50 no.4
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• pp.330-335
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• 2012

Shortened dental arch (SDA) as a treatment goal is the concept that stable occlusion and enough masticatory force can be achieved by restoration to the second premolars when the situation is not favorable. SDA could be applied both natural teeth and implant supported fixed prostheses. This case dealt with a patient who has grade 2 intellectual disability and a lot of missing teeth. Because of intellectual disability, patient cooperation during treatment could not be expected. Therefore every treatment should be done under general anesthesia. In addition to that, ridge resorption around molar area was severe and there were maxillary sinus pneumatization and maxillary sinusitis which increased failure probability. SDA concept was adopted to reduce risk factor and minimize general anesthesia. After the treatment, functional and esthetic improvement was achieved and oral hygiene was fortified by periodic recall check and education.

• Journal of Dental Rehabilitation and Applied Science
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• v.32 no.3
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• pp.255-262
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• 2016

This clinical report focuses on the treatment of a patient with esthetic and functional impairments due to severe worn dentition. Absence of posterior support for a prolonged period require comprehensive prosthetic restoration. Accurate clinical and radiographic examinations, diagnostic wax-up, and occlusal vertical dimension evaluation were performed and the degree of patient adaptability was evaluated using an interim restoration. After 8 weeks of stabilization with interim restoration and confirmation of absence of any abnormal findings, definitive prostheses were fabricated. Satisfactory functional and esthetic outcomes were observed after 6 months of follow-up.

• The Journal of Korean Academy of Prosthodontics
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• v.59 no.4
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• pp.415-421
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• 2021

The biomechanical prognosis of conventional removable partial denture is questionable in case of patient with few remaining teeth or periodontally compromised teeth. In this case, hybrid telescopic double crown RPD may be a successful treatment alternative. Hybrid telescopic double crown RPD has following advantages over conventional RPD: secondary splinting effect between abutments, more vertical stress direction and more convenient in repairing the denture after extraction of abutment tooth. In this clinical case, patient had deep overbite in anteriors and partially edentulous. The maxilla was restored with hybrid telescopic double crown RPD and the mandible was restored with implants and fixed prostheses. Long-term follow-up and supportive periodontal treatment were performed, and satisfactory results were achieved in terms of function and aesthetics.

• Journal of the Korean Society of Radiology
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• v.13 no.2
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• pp.227-232
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• 2019

MRI examination for patients with metal objects has in poor image quality. Metallic implants can result in poor image because magnetic susceptibility causes signal loss and distortion and makes poor imaging, which is called magnetic susceptibility artifact or metal artifact. There are several approaches to reduce metal artifacts. In this study, we study the reduction of metal artifact by VAT and SEMAC techniques. A metal implant used for orthopedic surgery was attached to the phatom and the distortion caused by the artifact was measured under T1WI and T2WI protocols. Several techniques of VAT only and VAT and SEMAC for the reduction of metal artifact were compared. The metal artifact showed a reduction of at least 8% to a maximum of 26% in the VAT-SEMAC. The VAT-SEMAC technique can be applied to patients with orthopedic implants to improve image quality. If scan time and image quality are simultaneously considered in VAT-SEMAC technique, metal artifact will be reduced in clinical practice.

• The Journal of the Korean dental association
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• v.54 no.1
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• pp.39-48
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• 2016

SFI-bar is prefabricated bar system and can be assembled at chairside without soldering or welding, thus reducing bone loss, costs and time. A 53-year-old male patient, who had severely absorbed mandible, hoped to wear a stable mandiblular denture. Four implants were placed in the extraction site of canine and 1st molar. Early loaded temporary denture with solitary type attachment was delivered 3 weeks after surgery. 3 month later, SFI-bar was connected and adjusted at chairside. Then, implant overdenture using SFI-bar was delivered. This case report showed that a satisfactory clinical result was achieved by 4-implant-supported overdenture using the SFI-Bar system in a mandibular edentulous patient.

• Journal of Oral Medicine and Pain
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• v.26 no.3
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• pp.301-308
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• 2001

지금까지 여러 가지 형태의 기기를 이용하여 보고된 사람의 교합력은 그 최대치가 매우 다양하다. 본 연구에서는, 교합력을 측정하기 위하여 새로운 측정기기를 개발하였다. 본 기기를 이용하여 전치부 교합력 측정 시에는 대칭적으로 최대한 물도록 하악을 유도하여 최대 교합력을 측정하였고, 구치부는 편측으로 물도록 하악을 유도하여 최대 교합력을 측정하였다. 교합 시 치아간 수직고경은 15.1mm 였다. 측정기기 내 strain gauge를 사용하여 전기저항의 변화를 힘으로 전환하였다. 마이크로 프로세서가 수치를 계산하면 액정화면에 수치가 표시된다. 실험실 내 기기교정 검사에서는 50kg과 100kg의 부하를 가하였다. 개발된 교합력 측정기기의 임상적 신뢰도를 시험하기 위해 건강한 치과대학 재학생 10명을 대상으로 최대 교합력을 측정 하였다. 이 새로운 측정기기로 측정된 교합력은 이전연구에서 기록되었던 것보다 더 높은 수치가 나왔다. 또한 제1대구치와 전치부에서 최대 교합력을 측정한 경우 실험자 내와 실험자 간에 통계적으로 유의한 신뢰성을 얻을 수 있었다. 본 기기는 안정적이고 조작성이 쉽다고 판명되었다. 그러므로, 본 기기는 더 큰 연구 집단의 선별검사에 매우 유용하게 사용할 수 있을 것이며, 또한 치주질환이 있는 치아나 임플란트, 악관절 장애를 가진 환자의 교합력 측정과 같이 특정된 경우의 교합력 측정에도 유용할 것이다.

• Journal of Technologic Dentistry
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• v.41 no.4
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• pp.305-317
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• 2019

Purpose: The purpose of this study is to provide basic data for the improvement of dental care service for patient care. Methods: The survey period was from December 10, 2018 to June 10, 2019. The subjects were 180 patients who were treated with dental implant in 20 dental hospitals and clinics in Daejeon and Gyeonggi province. A total of 145 questionnaires were analyzed except for 35 copies which were unreliable or difficult to analyze. Results: The most important care method for prolonging the life time of dental implant prosthesis was the highest rate of correct brushing (39.4%), and a majority in the subjects used oral hygiene products (91.0%). With regard to discomfort after dental implant prosthesis, food particles between the teeth showed the highest response (49.7%), and discomfort with gum infections and bleeding and reduced mastication increased significantly with age (p<0.05), whereas feeling of irritation decreased significantly with age (p<0.05). Conclusion: This study is meaningful in that it approached the perception and discomfort of prosthesis from the patients' point of view. It needs to establish the basic data to improve dental treatment service for patient care.