• Title, Summary, Keyword: 치과 임플란트

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Retrospective study on marginal bone resorption around immediately loaded implants (즉시 하중 임플란트에서 변연골 흡수량에 관한 후향적 연구)

  • Lee, Sung-Hoon;Jung, Ji-Hye;Lee, Jin-Han;Cho, Hye-Won
    • The Journal of Korean Academy of Prosthodontics
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    • v.56 no.2
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    • pp.114-119
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    • 2018
  • Purpose: Patients who treated implant immediate loading within a week after implant placement at Wonkwang University Dental Hospital Implant Center were evaluated marginal bone resorption. These retrospective analyses are intended to reinforce the clinical evidence for the implant immediate loading. Materials and methods: Medical history and radiographic data were investigated, which were the patients' who treated implant immediate loading and restoration with provisional prostheses between January 2005 and June 2016, at Wonkwang University Dental Hospital Implant Center. Total number of implants was 70, marginal bone resorption was measured according to implant length, diameter and connection type. To measure marginal bone resorption, periapical radiographs were taken when the implants were placed and after 6 month. Statistical analysis was done in Mann-whitney U test and Kruskal-wallis test with SPSS 22.0 software (P<.05). Results: Mean marginal bone resorption around immediately loaded implants according to implant connection type was shown $1.24{\pm}0.72mm$ in internal hexagon connection type and $1.73{\pm}1.27mm$ in external hexagon connection type. There was no statically significant difference in marginal bone resorption with implant length and diameter. Conclusion: Implants with immediated loading in internal hexagon connection type showed less marginal bone resorption significantly than in external hexagon connection type.

An assessment of accuracy of half-guided implant surgery using implant surgical guide: A case report (임플란트 수술용 가이드를 사용한 부분 유도 임플란트 수술의 정확도 평가: 증례보고)

  • Kim, Choongkil;Lee, Wonsup;Kwon, Ho-Beom
    • The Journal of Korean Academy of Prosthodontics
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    • v.57 no.2
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    • pp.150-159
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    • 2019
  • Nowadays, dental implant is one of the widely used treatment options for edentulous patients. Recently, a method of improving the accuracy of implant surgery using an implant surgical guide has been introduced and widely used in order to accurately place the implant in a proper position. Full-guided and half-guided implant surgery can be distinguished according to the level of surgical guide application during the implant surgery. It is true that full-guided implant surgery exhibits higher accuracy, but half- guided implant surgery is often performed in a clinical situation due to the factors such as the circumstances of the operation. A partially edentulous patient who lost teeth due to tooth fracture and periodontal disease was treated using implant and fixed prosthesis. Half-guided implant surgery was performed using an implant surgical guide during implant surgery, the accuracy of implant placement was analyzed.

Management of peri-implantitis associated with tear-like implant fracture: case reports (열리형 임플란트 파절과 연관된 임플란트 주위염의 관리: 증례 보고)

  • Kim, Yeon-Tae;Lee, Jae-Hong;Jeong, Seong-Nyum
    • Journal of Dental Rehabilitation and Applied Science
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    • v.36 no.2
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    • pp.138-144
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    • 2020
  • Implant fracture is rare, but one of the most serious problem in implantation. Treatment of implant fracture can be different according to the extent of the fracture and on the state of the surrounding prosthetic restoration. Maintaining or submerging implant after treatment of peri-implantitis can be useful options for cases of tear-like fracture on the coronal area of an implant.

Structural Design of a Dental Implant (I): Comparative Structural Analysis (치과용 임플란트 구조설계 (1): 구조해석 비교연구)

  • Kwon, Young-Joo
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.25 no.5
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    • pp.421-432
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    • 2012
  • This paper is the first paper among two papers which constitute the paper about the structural design of a dental implant. This paper surveyed types and characteristics of dental implants. Merits and shortcomings of clinically used dental implants were analysed through this survey. A new structural model of dental implant was proposed on the basis of survey results. Especially, a comparative structural analysis of the new dental implant and the well known dental implants has been performed using the finite element analysis method. The analysis results confirm that the newly proposed dental implant has a good structural performance. The well known dental implants used for the comparative structural analysis are 3i implant and Sargon implant. These implants are imported dental implants and we could know that most implants clinically used are endosteal implants and these two implants(3i implant and Sargon implant) are also endosteal implants.

구순 구개열 성장기 환자에서 임플란트 치료

  • 정필훈;강나라;홍종락;서병무;명훈;황순정;최진영;이종호;김명진
    • Korean Journal of Cleft Lip And Palate
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    • v.5 no.2
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    • pp.117-122
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    • 2002
  • 성장기 환자에서의 각 부위별 임플란트 식려 시기를 요약해보면 다음과 같다. 1) 상악전방부 : 외상이나 선천적 결손을 해결하는 방법으로 임플란트를 사용하는 술식이 권장하지만 성장이 완료되지 않았기 때문에 야기되는 문제를 해결하기 위해 성장이 완료될 때까지 연기하는 것이 좋다. 2)상악 후방부: 수직적인 성장량이 최고 1cm까지 일어날 수 있으면 상악동의 흡수로 조기에 임플란트 침강과 치근부의 노출을 야기할 수 있다. 그리고 동시에 보철에 의한 구개열의 횡적인 성장방해를 피해야한다. 3) 하악 전방부 : 무치증 아이에서 임플란트의 조기식립이 적응증이 되는 유일한 곳으로 치아가 없을 때는 치조골의 성장이 최소이며 초기에 횡적, 후방 성장이 대부분 완료된다. 그러나 단일 임플란트 식립은 권장되지 않는다. 4)하악후방부: 늦게까지 성장변화가 지속되기 때문에 전후방, 횡적, 수직적 성장의 많은 양이 일어난다. 하악의 회전성장의 영향을 많이 받아 하악 무치악에서 조기 임플란트 사용한 보고도 적고. 자연치아에 인접하여 임플란트를 식립한 기록은 있으나 골격성장이 완료될 때 까지는 식립하지 않는 것이 좋다.

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Dental implant cost estimation using the Activity-Based Costing approach (활동기준원가(Activity Based Cost)를 적용한 치과 임플란트 원가산정)

  • Shin, Ho-Sung;Ahn, Eun-Suk
    • The Journal of Korean Academy of Prosthodontics
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    • v.51 no.4
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    • pp.292-299
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    • 2013
  • Purpose: There is a growing concern for the cost management of medical institutions. The purpose of this study was to estimate Activity-Based Costing (ABC) for dental implant cost. ABC refers to allocating resources or cost based on the activities of services. Materials and methods: A dental institution located in the metropolitan area was selected in this study. The tax accounting data of the institution were utilized to confirm total cost, and the institution was asked to make out clinical activities to figure out what activities were carried out. The direct cost and indirect cost for dental implant were separately estimated, and cost driver was analyzed to estimate the indirect cost accurately. Results: The rates of the direct and indirect cost respectively stood at 35.8 and 49.5 percent. The cost for a dental implant was found to be approximately 1,579 won, and the cost of prosthetic surgery and treatment that included implant surgery accounted for the largest portion of the cost, which was 470 thousand won (30%). And the weight of training and education on dentistry was relatively higher than that of the other kinds of treatment. Conclusion: In order to ensure accurate and scientific costing for dental implant, not only direct medical procedure but every pre- and post-procedure activity should fully be taken into account. Pre-activities, post-activities, education and training are included in the indirect cost, but all these activities are mandatory and associated with the quality of treatment and the satisfaction level of patients.

Implant supported prosthetic rehabilitation of severely atrophic mandible with fixed detachable prosthesis (심하게 흡수된 하악골에서 fixed detachable prosthesis를 이용한 임플란트 지지 보철 수복증례)

  • Lee, Hak-Joo;Lim, Young-Jun;Kwon, Ho-Beom;Kim, Myung-Joo
    • The Journal of Korean Academy of Prosthodontics
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    • v.55 no.2
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    • pp.180-186
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    • 2017
  • Implant supported prostheses have improved the quality of lives of totally edentulous patients. However, there are some limitations on the number of implants related to the residual bone level or the economic concern and so on. In this situation, applying fixed detachable prosthesis with bilateral cantilevers can be considered. This clinical report describes implant supported prosthetic rehabilitation of a patient with severe bone resorption. The patient was satisfied and felt comfortable with upper complete denture and lower fixed detachable prosthesis.

Retrospective study on marginal bone loss around maxillary anterior implants with or without bone graft (상악 전치부에서 골 이식 유무에 따른 임플란트 변연골 소실에 관한 후향적 연구)

  • Hwang, Hee-Sun;Jung, Ji-Hye;Kim, Yu-Lee
    • The Journal of Korean Academy of Prosthodontics
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    • v.54 no.2
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    • pp.103-109
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    • 2016
  • Purpose: This study is to evaluate the clinical significance of implantation with simultaneous bone graft by comparing the marginal bone loss around maxillary anterior implants with or without bone graft. Materials and methods: Patients treated with implant-retained restorations on maxillary anterior region at Implant Center, Dental Hospital, Wonkwang University between June 2011 and May 2014 were included in this study. Date of implant placement, implant diameter, implant length, implant-abutment connection type and whether the bone graft was done were investigated. The patient's periapical radiographs taken immediately after implantation and at the most recent visit were compared. Marginal bone loss was measured using Emago advanced v5.6 program (Oral diagnostic systems, Amsterdam, Netherlands). Statistical analysis was done in independent t-test by using SPSS 22.0 program. Results: As a result of observing on 83 implants (without bone graft: 44, with bone graft: 39) of 52 patients for 6 - 45 months (average: 18.4 months), implants without bone graft showed $1.42{\pm}0.42mm$, implants with bone graft showed $1.28{\pm}0.45mm$ of marginal bone loss. Conclusion: In limitations of this study, implants with simultaneous bone graft had significantly less marginal bone loss than implants without bone graft.

Application of digital implant system on implant treatment with "all-on-4" concept (디지털 임플란트 시스템을 전용한 "All-on-4" 개념의 임플란트 보철 증례)

  • Kim, Yong-Jun;Jeong, Seung-Mi;Kim, Kyeong-Hee;Fang, Jeong-Whan;Kim, Dae-Hwan;Choi, Byung-Ho
    • The Journal of Korean Academy of Prosthodontics
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    • v.56 no.1
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    • pp.88-94
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    • 2018
  • Recently, digital implant systems are expanding its influence in dental area. Due to technical improvement, they jumped over their limits nowadays. We can use these newest systems to treat edentulous patient, from implant surgery to fabrication of prosthesis. In this case, The patient was a fifty years old female. She had a full edentulous ridge on mandible and wanted to reconstruct occlusion with using implants. We planned to use digital implant system with "all-on-4" concept on mandible and produced surgical guide for flapless implant surgery. After the surgery, we tried to fabricate full arch prosthesis just using a digital devices and confirmed satisfying result.

A conversion to implant overdenture in failed fixed implant prosthesis of edentulous maxilla: A case report (상악 고정성 임플란트 보철물 실패 환자에서 임플란트 피개의치로 전환한 치료 증례)

  • Kim, Joon-Soo;Jeon, Young-Chan;Jeong, Chang-Mo;Yun, Mi-Jung;Huh, Jung-Bo
    • The Journal of Korean Academy of Prosthodontics
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    • v.54 no.4
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    • pp.393-400
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    • 2016
  • Fixed implant prosthesis and removable implant overdenture are the main treatment options for treating edentulous maxilla with implants. If clinicians select one of the treatment options without accurate diagnosis and evaluation, this may lead to unfavorable treatment result and one would not be able to guarantee successful long term prognosis. In this case, 69 year-old female presented with failed fixed implant prosthesis that was treated in private dental clinic. Since the patient did not want additional insertion of implants and considering factors such as oral hygiene maintenance, splinting effect, and esthetics, the patient was treated with removable implant bar type overdenture using pre-existing implants. The clinical results were satisfactory in the aspect of esthetics and masticatory function, oral hygiene maintenance.