• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제50권2호
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• pp.70-79
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• 2024

Objectives: The surgical guide is a static computer-assisted device used for implant surgery planning and guidance. By taking an impression and referring to the patients' three-dimensional computed tomography scan of the desired implant site, a surgical guide can be created. During surgery, the surgical guide aids in achieving the designed implant placement position and direction. We examined and evaluated the long-term clinical outcomes of implant surgery using surgical guides. Materials and Methods: This study investigated a total of 15 patients with 32 implants that were placed using surgical guides from 2009 to 2011 with a mean follow-up period extended beyond 10 years. Patient demographics and implant survival rates were recorded. We analyzed marginal bone loss (MBL) by assessing the radiographs acquired at installation, three months after installation, and one month, one, two, and five years after prosthesis delivery. Results: The mean patient age was 57.33 years at implant placement. Of the 32 implants, five implants were placed in the anterior region and 27 implants were in the posterior region. Six implants failed and three of them were replaced, resulting in an 81.25% survival rate. The mean follow-up period was 10 years and nine months. Mean MBL compared to post-installation was significantly higher than at three months after installation, and one month, one, two, and five years after prosthesis delivery. Mean MBL at three months after installation, and one month, one year, and two years were significantly higher compared to the previous visit (P<0.05). However, MBL at five years after prosthesis delivery did not differ significantly compared to at two years. Conclusion: In this study, implant rehabilitation assisted by surgical guides exhibited favorable survival rates. With the limitation of the sample amount in this study, further research and more samples are required to evaluate the long-term clinical effectiveness of surgical guides.

• 구강회복응용과학지
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• 제25권3호
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• pp.267-277
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• 2009

구강 내 단일 치아를 상실한 경우 기존에는 고정성 보철물을 이용하여 수복하는 방법이 일반적이었지만, 최근에 와서는 임플란트를 이용하여 수복하는 것이 보편화되고 있다. 본 연구는 단일 치아 결손 시 $TiUnite^{TM}$ 표면 처리한 임플란트를 이용하여 수복한 경우를 후향적으로 조사하여 그 생존율을 분석한 것이다. 2002년 9월부터 2006년 12월까지 삼성서울병원에서 단일 치아 결손 부위에 식립된 총 269개의 $TiUnite^{TM}$ 표면 처리한 임플란트 중 21개는 인접한 임플란트가 있거나, 기록이 누락되거나 관찰 기간이 짧아 연구에서 제외되었다. 248개의 임플란트 중 상악에는 129개(52.0%) 하악에는 119개(48.0%) 식립되었다. 수술 부위에 치조골 재생술을 시행한 경우는 총 100개(40.3%)였으며, 상악동 거상술이 시행된 증례는 총 36개(14.5%)였다. 수술 당일부터 관찰 기간은 평균 $26.0{\pm}11.8$ 개월이었으며, 그 기간 동안 실패한 것으로 간주된 임플란트는 12개로 생존율은 95.2%였다. 그 중 상악에서 실패한 경우가 10개, 하악에서는 2개로 각각의 생존율은 92.2%, 98.3% 이다. 단일 치아 결손 시 $TiUnite^{TM}$ 표면 처리한 임플란트를 이용하여 수복한 경우 단기간 동안 높은 생존율을 보였다.

• 구강회복응용과학지
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• 제29권1호
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• pp.23-36
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• 2013

이 연구의 목적은 상악동 골증대술과 동반된 이식된 골의 3차원적인 형태를 평가하고 골이식 재료 및 임플란트의 종류, 수술 방법과 골흡수 정도 사이의 관계를 평가하는 것이다. 임플란트 식립을 위한 상악동 골증대술을 시행받은 환자들의 차트를 후향적으로 검토하였고 골이식재의 부피 및 부위의 방사선학적 분석을 시행하였다. 임플란트 식립 6개월 후 잔존 골 이식재의 비율로 측정된 부피 재생은 이식 재료의 형태 및 수술 방법과 연관성이 있었다. 원광대학교 산본 치과병원에서 15명의 환자에서 상악동 골이식술과 동반하여 53개의 임플란트가 식립되었다. 임플란트 식립 6개월 후 촬영된 컴퓨터 단층촬영에서 $Puros^{(R)}$ 와 다른 여러 가지 골이식재를 혼용한 그룹에비해 $Puros^{(R)}$ 이식재를 단독으로 사용한 그룹에서 더 높은 골흡수 정도를 보였다 (P<0.05). 그리고 수술 방법에 따른 골흡수 정도는 통계학적으로 유의성있는 차이를 보였다 (P<0.05). 골이식과 동시에 임플란트를 식립한 그룹에 비해 지연된 임플란트 식립을 시행한 그룹에서 더 높은 골이식재의 부피 변화율을 보였다. 후향적 자료 분석을 통해 $Puros^{(R)}$ 와 다른 여러 가지 골이식재를 혼용한 그룹에 비해 $Puros^{(R)}$ 이식재를 단독으로 사용한 그룹에서 더높은 골흡수 정도를 보였다. 또한 골이식과 동시에 임플란트를 식립한 그룹에서 지연 식립한 그룹보다 더 낮은 흡수율을 보여주었다.

• 구강회복응용과학지
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• 제19권1호
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• pp.43-48
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• 2003

During the past several years, significant advances have occurred in the utilization of osseointegrated implants for the treatment of partially edentulous patients. One of the biggest purposes for treating of these patients is the high demand for improved esthetics, especially in the anterior region. For this esthetics, the new trend in dental implants is the immediate placement and immediate superstructure fabrication. The refined surgical technique, the skillful soft tissue management, and the proper prosthetic coordination are the main factors to achieve natural looking of implant supported prosthesis. The customized provisional restoration and the customized impression coping are recommended for the optimal peri-implant soft tissue contour. The basic concept of Frialit 2 system was the immediate replacement of a tooth with root-analog fixture after extraction. This system guarantees an ideal result in function and esthetics. The ceramic abutment system offers improved quality in the respect of esthetics, fitness, translucency, and biocompatibility. In this clinical report, the final restoration made with IPS Empress 2 crown on the CeraBase abutmen of Frialit 2 system allowed the reproduction of the natural vitality of tooth and adjacent gingiva.

• Journal of Korean Dental Science
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• 제4권2호
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• pp.67-72
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• 2011

Purpose: This study sought to evaluate the effects of bone graft wedging on the initial stability of implants in bone sites of unfavorable quality. Materials and Methods: Three male beagle dogs were used in this study. Osteotomies were performed with parallel drills (${\O}4.1{\times}10mm$), and fixtures (${\O}3.3{\times}8mm$) were placed. The control group was given implants without bone graft. Experiment group A was given implants with minimal initial stability using autobone grafts, whereas experiment group B was given xenografts. Groups were also divided by healing times at 4, 8, and 12 weeks. Results: All implants in the control group failed to osseointegrate. On the other hand, all implants in the experiment groups were clinically well-maintained during the entire experiment period. After 4, 8, and 12 weeks, bone-to-implant contact (BIC) ratio and implant stability quotient (ISQ) increased in the experiment groups. The differences between experiment groups A and B were not statistically significant, however. Conclusion: In unfavorable bone regions for dental implants, bone graft packing into the osteotomy prior to implant placement secured minimal initial stability and showed reasonable BIC ratios and ISQ values throughout the study period.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제41권5호
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• pp.278-280
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• 2015

Migration of dental implants into the maxillary sinus is uncommon. However, poor bone quality and quantity in the posterior maxilla can increase the potential for this complication to arise during implant placement procedures. The aim of this report is to present a dental implant that migrated into the maxillary sinus and disappeared. A 53-year-old male patient was referred to us by his dentist after a dental implant migrated into his maxillary sinus. The displaced implant was discovered on a panoramic radiograph taken five days before his referral. Using computed tomography, we determined that the displaced dental implant was not in the antrum. There was also no sign of oroantral fistula. Because of the small size of the displaced implant, we think that the implant may have left the maxillary sinus via the ostium.

• 대한치과의사협회지
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• 제51권4호
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• pp.204-209
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• 2013

Implant-supported restorations were connected to commercially pure titanium endosteal implants 3 months in mandible and 6 months in maxilla after the implants were inserted into patient jaws. Modifications of titanium implant surfaces have reduced the waiting time for osseointegration, resulting in the development of the early loading concept, which is defined at present as a restoration in contact with the opposing dentition and placed at least 1 week after implant placement, but no later than 2 months afterward. Nowadays, immediate loading protocols have also been introduced, using the implants that are designed to enhance initial stability. Immediate loading eliminates the edentulous period of a patient. Although dentists widely accept these concepts of early and immediate loading, they agree the conventional loading concept is still necessary, which describes loading protocols later than 2 months after implant insertion. The timing of loading is determined mainly by the factors of a patient. This paper considers for what dental clinicians should be careful in implant-supported restoration procedures, considering the implant late failure.

• 대한치주과학회:학술대회논문집
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• 대한치주과학회 1999년도 제39회 종합학술대회 연제초록
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• pp.17-18
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• 1999

• 대한치주과학회:학술대회논문집
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• 대한치주과학회 2001년도 제41회 종합학술대회 연제초록
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• pp.17-18
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• 2001

• 대한심미치과학회지
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• 제18권1호
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• pp.55-70
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• 2009