• Journal of Korean Dental Science
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• 제14권1호
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• pp.32-39
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• 2021

'Crossed occlusion' is the condition in which occlusal intercuspation is lost when several teeth on upper and lower jaw remain. This report describes a clinical case in which a patient had two upper-left posterior teeth and two lower-right posterior teeth; typically known as left-right crossed occlusion. Considering the patient's general condition and financial situation, the treatment plan included placement of two implants on each jaw against the remaining teeth using surgical guide. To find out the ideal position of implants, digital diagnostic wax-up was preceded by superimposing the cast and cone beam computed tomography image, which was aided with radiographic stents. The consequent surveyed implant bridge provided stable vertical stop for fabrication of the implant assisted removable partial dentures. The patient was satisfied with the functionality and esthetics of definitive prosthesis.

• Journal of Korean Dental Science
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• 제15권1호
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• pp.75-83
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• 2022

Crown-type implant-assisted removable partial dentures (CIRPDs) can be a feasible treatment option for partially edentulous patients. Here we report a case with remaining unilateral mandibular teeth. Two implants were placed in the posterior portion of the mandible using a surgical guide, and a distal-extension removable partial denture with implant-supported surveyed crowns was fabricated. After 12 months, both the abutment teeth and implants were in good condition. The treatment outcomes were satisfactory in terms of masticatory function and esthetics. The advantages of CIRPDs and considerations for obtaining successful clinical outcomes with these dentures are also discussed.

• International Journal of Oral Biology
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• 제46권4호
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• pp.200-207
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• 2021

In case of gingival recession and alveolar bone defects due to tooth loss for a long period of time in a single tooth in the maxillary anterior region, it is not easy to obtain aesthetic results with a single implant prosthesis. For aesthetic restoration, it is important to preserve hard and soft tissues through alveolar bone augmentation as well as restore harmony with adjacent teeth and soft tissues by placing the implant in an ideal location. In this case, an implant was placed using guided bone regeneration and a connective tissue graft simultaneously with immediate implantation after extraction from the maxillary anterior region where only residual root was left for a long period of time.

• 구강회복응용과학지
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• 제27권2호
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• pp.223-231
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• 2011

본 증례 보고의 목적은 상악 무치악 환자에서 임플란트 지지 피개의치를 위한 $Locator^{(R)}$ attachment가 장착된 새로운 milled titanium bar를 소개하고 새로운 대안으로써의 가능성을 제시하고자 함이다. 56세 남자 환자가 상악 고정성 보철물(10-유닛 브릿지)의 동요도를 주소로 본원에 내원하였다. 악관절 및 치과 치료에 영향을 줄만한 특이한 전신병력은 없었다. 방사선 검사 및 임상 검사 결과, 상악의 경우 모든 잔존치아에서 심한 골흡수와 동요도를 보이고 있어 전악 발치를 시행한 후, 임플란트 지지 피개의치를 제작하기로 하였다. 의치의 안정성과 유지력, 저작효율, 청소의 용이성, 심미성과 발음 그리고 경제적인 측면을 고려하여 $Locator^{(R)}$ 어태치먼트를 CAD/CAM으로 제작된 milled titanium bar에 탭핑(tapping)으로 연결시키는 새로운 디자인을 고안하였으며, 1년 이상 경과 후, 기능과 심미적인 면에서 만족할 만한 성과를 얻었기에 이를 보고하는 바이다.

• 구강회복응용과학지
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• 제37권3호
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• pp.147-156
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• 2021

완전 무치악 환자의 구강 회복은 통상적 총의치, 하이브리드 보철물, 임플란트 지지 고정성 보철물 등 다양한 치료 옵션을 통해 이루어질 수 있다. 전악 임플란트 고정성 보철 수복의 경우 가철성 수복과 비교해 최종적인 보철물의 형태를 고려하여 정확한 위치에 임플란트를 식립해야 한다는 어려움이 따른다. 본 증례에서는 치아우식과 만성 치주염으로 전악 발거를 요하는 환자의 전악 임플란트 고정성 수복을 진행하였다. 임플란트 식립 단계에서 최종 보철물 형태를 고려하여 제작된 수술용 가이드를 이용하여 원하는 위치에 임플란트를 식립 하였으며 고정성 임시 수복물 단계에서 수정 및 재제작을 통해 기능과 심미를 평가하였다. 이렇게 제작된 임시 수복물을 바탕으로 금속 도재관의 최종 수복물을 장착하였다. 나사 풀림 및 도재 파절 등의 합병증에 대처하기 위해 구치부의 경우 나사 유지형 보철물, 전치부는 나사 시멘트 유지형 보철물로 제작하였다. 그 결과 환자는 최종 보철물 장착 후 기능적 심미적 측면에서 개선된 예후를 보였다.

• Journal of Periodontal and Implant Science
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• 제28권3호
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• pp.507-517
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• 1998

This study was performed to investigate the soft tissue changes around single implant-supported crowns during followup periods. Twenty patients(31 implants) whose single missing tooth in the maxillary anterior region had been replaced with an single implant-supported crown were recruited for the study. Crown length, soft tissue level and papilla height at the single implant-supported crowns were measured at follow-up examination and calculated from the slides taken at time of crown placement. as well Papilla index was scored from the slides taken at the time of crown placement and follow-up examination. A very little amount of recession occurred and the soft tissue level moved more apically and the papilla height increased significantly (p<0.01). Especially, both mesial and distal papilla index at single implant-supported crowns increased significantly during follow-up periods (p<0.001). When the two slides taken at the time of crown placement and follow-up were compared simultaneously, except one site, papillae size increased at all sites. From the results of the study, the interdental papillae at the single implant-supported crowns seemed to regenerate significantly and their crown margins were stable during follow-up periods. Hence it is indicated that various surgical interventions at on early stage to enhance soft tissue esthetics arourd single implants may be unnecessary.

• Journal of Periodontal and Implant Science
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• 제41권5호
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• pp.248-252
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• 2011

Purpose: The anterior region is a challenge for most clinicians to achieve optimal esthetics with dental implants. The provisional crown is a key factor in the success of obtaining pink esthetics around restorations with single implants, by soft tissue and inter-proximal papilla shaping. Provisional abutments bring additional costs and make the treatment more expensive. Since one of the aims of the clinician is to reduce costs and find more economic ways to raise patient satisfaction, this paper describes a practical method for chair-side fabrication of non-occlusal loaded provisional crowns used by the authors for several years successfully. Methods: Twenty two patients (9 males, 13 females; mean age, 36,72 years) with one missing anterior tooth were treated by using the presented method. Metal definitive abutments instead of provisional abutments were used and provisional crowns were fabricated on the definitive abutments for all of the patients. The marginal fit was finished on a laboratory analogue and temporarily cemented to the abutments. The marginal adaptation of the crowns was evaluated radiographically. Results: The patients were all satisfied with the final appearance and no complications occurred until the implants were loaded with permanent restorations. Conclusions: The use of the definitive abutments for provisional crowns instead of provisional abutments reduces the costs and the same results can be obtained.

• 대한치과의사협회지
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• 제54권3호
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• pp.191-197
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• 2016

In the past, restoration of implant crown, ready-made abutment produced by implant manufacturer could only be used. Using straight, angled abutment, there was a limit in adaptation multiple implants. Recently, with the development of implant and CAD/CAM technology, CAD/CAM customized abutment use has become possible which is different from the past when restoration was possible with only prefabricated abutment. Not only it makes emergence profile possible which is similar to natural teeth, but also it makes insertion path possible on CAD in multiple implant restorations. However, on anterior teeth which dental esthetics is very important, another restorations which are formed with natural colored gingiva area could be required. Titanium-based zirconia prostheses which have titanium connection and zirconia structure from 1mm above fixture platform are alternative. Therefore, the purpose of this review is to analyze the characteristics, advantages and disadvantages of the abutment which is used in multiple implant restorations, and to choose right abutment when clinical trials.

• 구강회복응용과학지
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• 제33권4호
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• pp.307-313
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• 2017

본 증례에서는 상악 완전 무치악 환자에서 CAD/CAM으로 가공 지르코니아 바와 PEKK 슬리브를 제작하여, 바 어태치먼트를 활용한 임플란트 지지형 피개의치로 수복하였다. 2년간의 정기적인 경과 관찰 결과 심미적, 기능적으로 만족할 만한 결과를 얻었기에 이를 보고하는 바이다.

• 구강회복응용과학지
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• 제30권1호
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• pp.64-70
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• 2014

본 증례는 상악 무치악 환자에서 임플란트 피개의치 제작시 CAD/CAM으로 제작된 milled titanium bar에 Locator$^{(R)}$를 장착한 바 어태치먼트 시스템을 사용한 증례이다. 2년 이상 경과 후, 기능과 심미적인 면에서 만족할 만한 성과를 얻었다.