• The Journal of Advanced Prosthodontics
• /
• 제2권1호
• /
• pp.4-6
• /
• 2010

PURPOSE. The aim of this article is to analyze the preference for treatment modality of dentists. MATERIAL AND METHODS. Data of 20,038 patients was involved. Data analysis were done by distribution according to the various kinds of prosthesis, including complete denture, removable partial denture, fixed partial denture, implant-supported dental prosthesis as well as distribution according to the professional titles of the dentists finishing the treatment, including resident and professors. RESULTS. The number of cases of dental prosthesis increased year by year. 61.06% of the patients accepted fixed partial denture restoration. The number of patients who accepted implant supported restoration is also increasing year by year. The number of complete denture, implant-supported dental prosthesis finished by professors was larger than that done by residents, while it was contrary for removable partial denture, fixed partial denture, and the difference was statistically significant (P < .05). CONCLUSION. Professors and residents have some difference in the categorization of prosthesis finished. Fixed partial denture and implant-supported dental prosthesis are preferred.

• 대한치과보철학회지
• /
• 제38권3호
• /
• pp.360-365
• /
• 2000

The completely edentulous patient has few treatment options in conventional dentistry. When implants are considered, treatment plans range from a 2-implant overdenture to a completely implant-supported prosthesis. Fixed prosthesis is often the preferred selection of the edentulous patient. fixed full-arch cert amo-metal restorations can be a predictable implant treatment modality for the edentulous patient. Implant-supported fixed prosthesis has several advantages: predictability, fixedness, retrievability, improved function, lower maintenance of prosthesis, long-term published success. Edentulous patients with a severely resorbed mandible often experience problems with their dentures. Treatment concepts involving two to four implants for the support of an overdenture have been proposed. There seems to be no need to insert more than two endosteal implants to support an overdenture, however, long-term prospective studies are needed to support this notion. Using short endosseous implants and an overdenture in the extremely resorbed mandible is a justified treatment option because of the relative simplicity and low morbidity of this treatment strategy. Implant-supported overdenture has several advantages: Cost, retrievability, hygiene access, profile and contour control, increased retention and stability, implant installed in a predicted region(ant. mandible).

• 대한심미치과학회지
• /
• 제27권1호
• /
• pp.24-40
• /
• 2018

하악 구치부에 임플란트 식립이 불가능할 정도로 치조제의 수직적 흡수가 심한 무치악 환자들이 종종 있다. 이런 경우 하악 전방부에 임플란트를 식립하고 implant assisted overdenture를 할 수도 있지만 가철성 보철물이 갖는 근본적인 불편함을 해결할 수는 없다. 하지만 양측 이공 사이에 임플란트를 적절히 식립하고 fixed hybrid prosthesis를 제작해준다면 가철성 보철물이 갖는 불편함 없이 환자를 만족시킬 수 있을 것이다. 다만 fixed hybrid prosthesis가 갖는 단점 및 예상되는 합병증을 예방하도록 치료계획을 잘 설계해야 할 것이다. 필자의 임상경험을 토대로 이에 대해 자세히 설명하고자 한다.

• 한국멀티미디어학회논문지
• /
• 제20권2호
• /
• pp.179-187
• /
• 2017

The fourth industrial revolution is a phenomenon where productivity is improved in each field by the convergence of IT technology and existing industries. In the dental treatment process, prosthetic treatment time is drastically shortened through AI and expert software. Oral imaging, prosthesis design, and prosthesis manufacturing are performed continuously, so the treatment can be completed in a few hours. In this paper, we introduce the research trend of multimedia technology in the prosthetic process. We also propose a new method for accelerating the fusion of surface data during the optical impression. Proposed method enables high-speed optical impression and accelerates the overall automated production process of dental prosthesis.

• 대한치과보철학회지
• /
• 제51권4호
• /
• pp.347-352
• /
• 2013

혀는 정확한 근신경계의 조화에 의해 저작, 연하, 발음과 같은 복잡한 기능을 수행하는 데 중요한 역할을 한다. 악성종양으로 인해 구강 내 혀를 절제해야 하는 경우에 환자는 발음 및 연하에 큰 어려움을 겪게 된다. 이러한 환자에 있어 보철적 치료 목표는 저작, 연하 및 발음을 증진시키는 것이다. 보철적 수복 방법은 수술의 종류 및 범위에 의해 결정된다. 완전 혀 절제술(Total glossectomy)을 시행한 경우에는 하악-혀장치(mandibular tongue prosthesis)를 선택하며 악-혀장치(Mandibular tongue prosthesis)는 혀 보철물로 구강저를 채우는 것이다. 이렇게 형성한 혀 보철물은 음식이 식도로 넘어가는 입구(platform)를 형성해주고 발음을 향상시키며 하방의 연약한 이식 조직을 보호하고 외형 및 심리사회적으로 우수하다는 장점을 가진다. 본 증례에서는 완전 혀 절제술(total glossectomy)를 시행한 환자를 위해 보철적으로 수복하는 임상과정을 논의하고자 한다.

• 대한치과의사협회지
• /
• 제50권3호
• /
• pp.126-139
• /
• 2012

Loss of dentition can lead to not only compromised esthetics and functions of the patient, but also alveolar bone resorption. Bone grafting with prosthetic reconstruction of the gingiva can be selected for the treatment, and it provides many benefits as prosthetic gingival reconstruction does not require a complicated surgical process and is available within a short period of time, with stable clinical results. However, conventional porcelain fused to metal prosthesis has certain limits due to its size, and deformation after several firing procedures. In this clinical report, the author would like to introduce a patient with severe alveolar resorption who was treated with gingiva-shaped zirconia/titanium CAD/CAM implant fixed prosthesis for esthetic and functional rehabilitation. Clinical reports Clinical report 1, 2 : A case of loss of anterior dentition with atrophied alveolar bone. Implant retained zirconia bridge applied with Procera implant bridge system to simulate the gingiva. Upper structure was fabricated with zirconia all ceramic crown. Clinical report 3, 4 : A case of atrophied maxillary alveolus was reconstructed with fixed implant prosthesis, a CAD/CAM designed titanium structure covered wi th resin on its surface. Anterior dentition was reconstructed with zirconia crown. Conclusion and clinical uses. All patients were satisfied with the outcome, and maintained good oral hygiene. Zirconia/titanium implant fixed prosthesis fabricated by CAD/CAM system was highly accurate and showed adequate histological response. No critical failure was seen on the implant fixture and abutment overall. Sites of severe alveolar bone loss can be rehabilitated by implant fixed prosthesis with CAD/CAM system. This type of prosthesis can offer artificial gingival structure and can give more satisfying esthetics and functions, and as a result the patients were able to accept the outcome more fondly, which makes us less than hard to think that it can be a more convenient treatment for the practitioners.

• The Journal of Advanced Prosthodontics
• /
• 제3권3호
• /
• pp.172-176
• /
• 2011

Surgical resection of the mandible due to presence of benign or malignant tumor is the most common cause of the mandibular deviation. Depending upon the location and extent of the tumor in the mandible, various surgical treatment modalities like marginal, segmental, hemi, subtotal, or total mandibulectomy can be performed. The clinicians must wait for extensive period of time for completion of healing and acceptance of the osseous graft before considering the definitive prosthesis. During this initial healing period prosthodontic intervention is required for preventing the mandibular deviation. This case report describes early prosthodontic management of a patient who has undergone a reconstructed hemi-mandibulectomy with modified mandibular guide flange prosthesis. The prosthesis helps patient moving the mandible normally without deviation during functions like speech and mastication.

• 대한치과보철학회지
• /
• 제59권4호
• /
• pp.497-507
• /
• 2021

무치악 환자에서 잔존 치조골을 최대의 효율로 활용해 임플란트 고정성 보철물을 수복하는 치료법 중 하나로 All-on-6 개념을 사용할 수 있으나, 치료과정에서 복잡함과 번거로움이 동반된다. 나날이 발전해 온 디지털 시스템을 활용한다면 무치악 환자의 임플란트 식립부터 보철물 제작 및 수복까지 높은 효용성으로 활용할 수 있다. 본 증례에서는 76세 상악 무치악 환자의 일체형 나사 유지형 고정성 임플란트 보철 수복(1-piece design, screw retained implant fixed prosthesis)에 대해 진단부터 임플란트 식립 그리고 보철물 제작까지 전 과정에서 디지털 시스템을 활용하였다. 술전 진단에서 구강직접스캔(Direct intraoral scan)을 통해 환자의 정보를 데이터화 하였으며 이를 토대로 임플란트 식립 수술 가이드와 식립직후 장착할 즉시 임시보철물을 디자인 하였다. 최적의 잔존 치조골 위치에 식립된 6개의 임플란트 위치정보에 따라 정밀하게 제작된 즉시 임시보철물을 수복하여 술 후 사용 가능하도록 하여 환자의 불편감을 최소화하였다. 디지털 시스템을 활용하여 환자의 요구사항, 안정된 수직고경과 교합, 심미성을 고려하여 제작한 새로운 임시보철물을 거쳐 최종보철물을 디자인하고 제작하였다. 디지털 시스템을 활용하여 무치악 환자의 효율적이고 정확한 임플란트 식립부터 보철물 제작까지 전 과정에 있어서 복잡한 임플란트 치료과정을 단순화하여 환자의 불편감을 최소화시키고 기능적이고 심미적인 결과를 얻어 보고하는 바이다.

• The Journal of Advanced Prosthodontics
• /
• 제4권4호
• /
• pp.248-253
• /
• 2012

Maxillary obturator prosthesis is the most frequent treatment option for management of partial or total maxillectomy. Heavy weight of the obturators is often a dislocating factor. Hollowing the prosthesis to reduce its weight is the well established fact. The alternate technique to hollow-out the prosthesis has been described in this article which is a variation of previously described processing techniques. A pre-shaped wax-bolus was incorporated inside the flasks during packing of the heat-polymerized acrylic resin to automatically create the hollow space. The processing technique described is a single step flasking procedure to construct a closed-hollow-obturator prosthesis as a single unit. To best understand the technique, this article describes management of a patient who had undergone partial maxillectomy secondary to squamous cell carcinoma rehabilitated with a hollow-obturator prosthesis.

• 대한치과보철학회지
• /
• 제55권4호
• /
• pp.427-435
• /
• 2017

임플란트를 이용한 완전 무치악 환자의 치료에 있어 가장 중요한 것은 최종 보철물의 형태이며, 최종 보철물의 형태가 결정된 후 잔존골 분석 및 식립할 임플란트의 종류, 개수, 위치 등에 대한 선택이 이루어져야 한다. 본 증례는 상악 우측 측절치를 제외하고 전악에 임플란트가 식립된 채로 내원한 환자에 대해 고정성 보철 수복한 증례이다. 최종 보철물에 대한 고려 없이 임플란트가 식립되었기 때문에 먼저 총의치를 제작하여 안모 분석 및 고정성 보철 수복 가능성을 평가하였다. 고정성 보철 수복이 가능하다고 판단되어 진단 납형, 방사선 영상 및 디지털 분석을 통해 최종 보철물에 사용할 수 없는 임플란트를 치료계획에서 제외한 후 고정성 임시 보철물을 제작하였다. 4개월 동안 고정성 임시 보철물을 사용하면서 안정적인 교합과 심미적인 만족을 보였기에 CAD/CAM (Computer aided design and computer aided manufacturing)을 이용하여 지르코니아 최종 보철물로 이행하였고, 치료 종료 후 3개월 동안의 평가에서 만족스러운 결과를 얻었다.