• The Journal of Advanced Prosthodontics
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• 제6권5호
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• pp.395-405
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• 2014

PURPOSE. This study aims to investigate the degree of subjective pain and the satisfaction of patients who have undergone an implant treatment using a computer-guided template. MATERIALS AND METHODS. A survey was conducted for 135 patients who have undergone implant surgery with and without the use of the computerguided template during the period of 2012 and 2013 in university hospitals, dental hospitals and dental clinics that practiced implant surgery using the computer-guided template. Likert scale and VAS score were used in the survey questions, and the independent t-test and One-Way ANOVA were performed (${\alpha}=.05$). RESULTS. The route that the subjects were introduced to the computer-guided implant surgery using a surgical template was mostly advices by dentists, and the most common reason for which they chose to undergo such surgery was that it was accurate and safe. Most of them gave an answer that they were willing to recommend it to others. The patients who have undergone the computer-guided implant surgery felt less pain during the operation and showed higher satisfaction than those who have undergone conventional implant surgery. Among the patients who have undergone computer-guided implant surgery, those who also had prior experience of surgery without a computer-guided template expressed higher satisfaction with the former (P<.05). CONCLUSION. In this study, it could be seen that the patients who have undergone computer-guided implant surgery employing a surgical template felt less pain and had higher satisfaction than those with the conventional one, and the dentist's description could provide the confidence about the safety of surgery.

• 대한심미치과학회지
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• 제27권1호
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• pp.41-50
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• 2018

전치부 임플란트 수복에 가이드를 사용하면 다음과 같은 장점이 있다. 첫번째 전치부 임플란트 수복에 제일 중요한 픽스쳐의 위치를 확보할 수 있고, 고정이 확실하게 얻어진 경우는 픽스드로 템포러리를 딜리버리 할 수 있다. 임상에서 늘 어려운 전치부 임플란트 브릿지케이스에 가이드를 적용한 증례를 소개한다.

• 대한치과보철학회지
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• 제62권2호
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• pp.131-139
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• 2024

무치악 환자에서 임플란트를 이용한 보철치료는 임플란트 고정성 보철, 임플란트 융합 국소 의치, 하이브리드 보철물, 임플란트 유지 및 지지 피개의치 등의 다양한 방법이 있다. 본 증례에서는 중등도 이상의 만성 치주염에 이환 되어 전악 발치가 필요한 환자에서 computer guided surgery를 이용하여 계획된 위치에 임플란트를 식립하였다. 상악은 불량한 골질로 초기고정력이 충분하지 않아 지연 부하를 시행하였고 골 유착 기간 동안 임시 의치를 사용하였다. 하악은 안정적인 초기 고정을 얻어 즉시 부하를 이용하여 환자의 불편감을 감소시켰다. 임플란트 일차 안정은 즉시 부하를 얻기 위해 가장 중요한 요소로 여겨지기 때문에 수술 전 반드시 임상적, 방사선학적 평가를 통해 잔존 치조골 양 및 골질을 파악해야 한다.

• 대한치과보철학회지
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• 제57권1호
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• pp.57-65
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• 2019

Computer guided implant surgery와 computer-aided design/computer-aided manufacturing, computer guided implant surgery (CAD/CAM) 기술의 발전은 수복 기반 임플란트 치료의 완성도를 한층 더 높였으며, 3D printing을 통한 국소의치의 제작도 빈도가 늘고 있다. 본 증례는 디지털 치의학의 작업 흐름을 따라서 콘빔컴퓨터단층촬영을 통한 치료 계획 수립 및 수술용 스텐트의 제작과 그를 바탕으로 한 임플란트 식립을 하였으며, 맞춤 지대주와 보철물을 제작하였다. 그 후 전자 서베잉과 3D printing을 통한 국소의치 금속 구조물 및 최종적으로 지르코니아 온레이의 제작을 통해 전악 수복을 완성하여 기능과 심미적으로 만족스러운 결과를 얻을 수 있었다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제38권
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• pp.15.1-15.6
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• 2016

Background: The utilization of a cone-beam computed tomography (CT)-assisted surgical template allows for predictable results because implant placement plans can be performed in the actual surgery. In order to assess the accuracy of the CT-guided surgery, angular errors and shoulder/apex distance errors were evaluated by data fusion from before and after the placement. Methods: Computer-guided implant surgery was performed in five patients with 19 implants. In order to analyze differences of the implant fixture body between preoperative planned implant and postoperative placed implant, angular error and distance errors were evaluated. Results: The mean angular errors between the preoperative planned and postoperative placed implant was $3.84^{\circ}{\pm}1.49^{\circ}$; the mean distance errors between the planned and placed implants were $0.45{\pm}0.48mm$ horizontally and $0.63{\pm}0.51mm$ vertically at the implant neck and $0.70{\pm}0.63mm$ horizontally and $0.64{\pm}0.57mm$ vertically at the implant apex for all 19 implants. Conclusions: It is important to be able to utilize these methods in actual clinical settings by improving the various problems, including the considerations of patient mouth opening limitations, surgical guide preparation, and fixation.

• 대한치과보철학회지
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• 제57권2호
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• pp.150-159
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• 2019

무치악 환자의 치료에서 치과용 임플란트를 이용한 보철치료는 현재 널리 사용되고 있는 치료 방법 중 하나이다. 임플란트를 적절한 위치에 정확히 식립하기 위해 최근 임플란트 수술용 가이드를 이용하여 임플란트 수술의 정확도를 향상시키는 방법이 소개되어 폭넓게 사용되고 있다. 임플란트 수술 시 임플란트 수술용 가이드를 적용하는 수준에 따라 완전 유도 임플란트 수술과 부분 유도 임플란트 수술로 구분할 수 있다. 비록 완전 유도 임플란트 수술이 더 높은 정확도를 보이는 것은 사실이나 수술상황에서의 다양한 임상적 환경 등으로 인해서 부분 유도 임플란트 수술이 종종 시행된다. 이 증례는 치아파절과 치주염 등으로 치아를 상실하게 된 부분무치악 환자에서 임플란트와 고정성보철물을 이용해서 보철 수복 치료를 시행한 사례이다. 임플란트 수술 과정에서 임플란트 수술용 가이드를 사용해서 부분 유도 임플란트 수술을 시행하였으며, 임플란트 수술 계획과 수술 결과 간의 정확도에 대한 분석을 시행하여 소개하였다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제38권
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• pp.19.1-19.4
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• 2016

Background: Implant surgery has become popular with the advance of surgical techniques such as sinus lifting, guided bone regeneration, and block bone graft. However, there were no data about the frequency of bone graft during implant surgery. The purpose of this study was to report the frequency and types of bone graft depending on dental implant patients' profile to complement the database regarding implant surgery. Methods: The implant operations had been performed from January 2006 to October 2014. The upper and lower jaws were divided into six sextants. A total of 792 sextants were included in this study. Patient information including sex, age, sites, bone graft, and types of bone were investigated. Results: A total of 1512 implants had been placed. Male and female sextants were 421 and 371, respectively (M:F = 1:0.88). Average age was 54.3 (ranging from 20 to 88 years old). Implants were placed in the posterior maxilla (322 sextants, 40.7 %), posterior mandible (286 sextants, 36.1 %), anterior maxilla (127 sextants, 16.1 %), and anterior mandible (57 sextants, 7.2 %). Bone graft was performed in 50.3 % of the sextants. Among the bone grafted sites, sinus lifting with lateral approach (22.1 %) and guided bone regeneration (22.7 %) were performed most frequently. Conclusions: Bone graft in implant surgery was necessary to augment defects. More than half of the sextants needed bone graft for implant installation.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제34권6호
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• pp.440-448
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• 2012

Purpose: The purpose of this study was to evaluate marginal bone loss of the alveolar crest on implants with or without guided bone regeneration and variables that have influenced. Methods: The clinical evaluation were performed for survival rate and marginal bone loss of 161 endosseous implants installed with guided bone regeneration (GBR) in 83 patients from September 2009 to October 2010 in relation to sex and age of patients, position of implant, implant system, length and diameter of implant. Study group (n=42) implant with GBR procedure, control group (n=41) implant without GBR technique. Simultaneous GBR approach using resorbable membranes combined with autogenous bone graft or freeze-dried bone allograft or combination. Radiographic examinations were conducted at healing abutment connection and latest visit. Marginal bone level was measured. Results: Mean marginal bone loss was 0.73 mm in study group, 0.63 mm in control group. Implants in maxillary anterior area (1.21 mm) were statistically significant in study group (P<0.05), maxillary posterior area (0.81 mm) in control group (P<0.05). Mean marginal bone loss 1.47 mm for implants with diameter 3.4 mm, 0.83 mm for implants of control group with diameter 4.0 mm (P<0.05). Some graft materials showed an increased marginal bone loss but no statistically significant influence of sex, implant type or length. Conclusion: According to these findings, this study demonstrated the amount of marginal bone loss around implant has maintained a relative stable during follow-up periods. We conclude that implants with GBR had similar survival rate and crestal bone level compared with implants in native bone.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제33권2호
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• pp.144-148
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• 2011

Purpose: The purpose of this study was to evaluate the effectiveness of a novel bone grafting material using an autogeneous tooth (AutoBT) and provide the basis for its clinical application. The AutoBT contains organic and inorganic mineral components and is prepared from autogenous grafting material, thus eliminating the risk of immune reactions that may lead to its rejection. AutoBT can be used as bone material as is has both osteoinduction and osteoconduction activities at guided bone regeneration for implant placement and maxillary sinus graft. Methods: In a total of 63 patients, guided bone regeneration surgery was performed at the time of implant placement, and tissue samples were harvested at the time of the second surgery with the patient's consent. Results: There were no complications in guided bone regeneration using autogeneous tooth. Conclusion: We concluded that AutoBT underwent gradual resorption and was replaced by new bone of excellent quality via osteoinduction and osteoconduction.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제36권3호
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• pp.116-123
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• 2014

Purpose: The purpose of this study was to evaluate risks for wound dehiscence after guided bone regeneration (GBR) in dental implant surgery. Methods: Patients who received dental implant therapy with GBR procedure at Seoul National University Bundang Hospital (Seongnam, Korea) from June 2004 to May 2007 were included. The clinical outcome of interest was complications related to dental implant surgery. The factors influencing wound dehiscence, classified into patient-related factors, surgery-related factors and material-related factors, were evaluated. Results: One hundred and fifteen cases (202 implants) were included in this study. Wound dehiscence (19.1%) was considered a major complication. The risk of wound dehiscence was higher in males than in females (odds ratio=4.279, P =0.014). In the main graft, the allogenic group had the lowest risk of wound dehiscence (odds ratio=0.106, P =0.006). Though the external connection group had a higher risk of wound dehiscence than the internal connection group (odds ratio=2.381), the difference was not significant (P =0.100). Conclusion: In this study, male gender and main graft have the highest risk of wound dehiscence. To reduce wound dehiscence after GBR, instructions on postoperative care with supplementary procedure for the protection of the wound dehiscence is recommended, especially to male patients. A main graft with a gel base can reduce the risk of wound dehiscence.