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ACOMS+ 및 학술지 리포지터리 설명회

  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

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임플란트 및 골이식술과 관련된세균감염
팽준영(경북대학교) pp.298-306 https://doi.org/10.22974/jkda.2015.53.5.001
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Abstract

Bacterial infection after implant installation or bone graft is a serious complication. Bone grafts represent a temporary foreign body lacking vascularisation and are therefore of increased susceptibility to infection, which may be introduced either intraoperatively or postoperatively. Bone graft-associated infections are due to biofilm formation on the surface of the bone graft and often require removal of the infected bone graft with substantial graft failure. In this review, the implant and graft related infection, the role of biofilm and the management will be discussed.

Biomechanical Complications : 파절과 나사풀림
김태인(태원치과의원) pp.307-317 https://doi.org/10.22974/jkda.2015.53.5.002
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Abstract

Although the long-term success of osseointegrated endosseous implants for the support of fixed dental prostheses has been reported, the increasingly widespread use of implant-supported prostheses has led to problems associated with their structural integrity. The most common biomechanical complications observed in dental implant treatment are fracture and screw loosening. The nature of loosening or fracture of dental implant components is complex, since it involves fatigue, fitness, and varied chewing patterns and loads. To assess the service life of the components of the prosthetic system, a knowledge of the loads transmitted through the system is necessary. Design of the final restoration and occlusion in relation to the geometry of a prosthetic restoration has a great influence on the mechanical loading of the implant. It is proposed that control of force in oral cavity may play a larger role in failures than previously believed. Based on theoretic consideration and clinical experiences with dental implant, this article gives simple guidelines for controlling these loads.

임프란트 주위염의 이해와 치료
김보배(가톨릭대학교) ; 고영경(가톨릭대학교) ; 박준범(가톨릭대학교) pp.318-325 https://doi.org/10.22974/jkda.2015.53.5.003
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Abstract

Peri-implantitis is defined as an inflammatory process affecting the tissues around an osseointegrated implant, resulting in the loss of the supporting bone. Microbial adherence and colonization appear to play a major role in the pathogenesis of periimplantitis. The decision regarding treatment strategies is based on the diagnosis. The severity of the peri-implant lesion and the treatment strategies must include mechanical cleaning (infection control) procedures. Mechanical instrumentation is widely used for the debridement of dental implants, but this may alter the titanium’s surface properties. Therefore, selection of the type of instrumentation should be made depending on the type of surface to be debrided. Also, patients with dental implants must always be enrolled in a supportive therapy program.

A retrospective study on survival rates of dental implants in elderly patients
신희정(조선대학교) ; 유상준(조선대학교) ; 김병옥(조선대학교) pp.326-347 https://doi.org/10.22974/jkda.2015.53.5.004
성견의 발치와 협측골 외측에 적용한 교원질 차단막과 재조합골형성단백질의 치조제 보존 효과
임현창(경희대학교) ; 김민수(연세대학교) ; 양혜주(연세대학교) ; 이중석(연세대학교) ; 최성호(연세대학교) ; 정의원(연세대학교) pp.348-359 https://doi.org/10.22974/jkda.2015.53.5.005
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Objective: The aim of this study was to determine the effect of multi-layer of a collagen membrane alone or loaded rhBMP-2 on the buccal plate for ridge preservation after tooth extraction. Material and methods: Following bilateral extraction of the maxillary 1st and 3rd premolars in five dogs, rhBMP-2 loaded collagen membrane was applied to the buccal plates at the 1st premolar and collagen membrane only was applied to the buccal plates at the 3rd premolar unilaterally. The collagen membranes applied in the experimental groups were piled into four layers. The corresponding sites of the contralateral side healed naturally. After 3months of healing, the animals were sacrificed. Radiographic and histologic analyses were performed. Results: There was no significant difference in the healing of extraction socket at both 1st and 3rd premolars. In microcomputed tomography, the widths of the residual ridge of the experimental groups were similar with the controls. Histologically, the experimental groups did not exhibit different pattern compared to the controls regardless of the addition of rhBMP-2. Conclusion: Layering of the collagen membrane with or without rhBMP-2 on the buccal plate failed to show the effectiveness in dimensional preservation of the extraction socket.

치관 내 캔틸레버 양에 따른 내측 연결 형태임플란트의 기계적 강도에 대한 연구
윤미정(부산대학교) ; 허중보(부산대학교) ; 정창모(부산대학교) ; 전영찬(부산대학교) ; 강은숙(인제대학교) pp.360-367 https://doi.org/10.22974/jkda.2015.53.5.006
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Purpose : The purpose of this study was to evaluate the effect of amount of cantilever in intra-crown according to implant fixture position on mechanical strength of internal conical joint type implant. Materials and Methods : Internal conical joint type implant fixture, abutment screw, abutment was connected and gold alloy prostheses were fabricated and cemented on abutment. For fatigue fracture test, the specimens were loaded to the 350 N, 2,000,000 cycle on 3, 4, 5, and 6 mm off-center of gold alloy prostheses. The fracture pattern of implant component was observed. Results : No fatigue fracture found on 3 and 4 mm group. But initial crack pattern found on 3 specimens of 4 mm group. Fatigue fracture found on all specimens of 5 mm group. But complete fracture was not observed. One specimen of 6 mm group fracture completely. Implant fixture fracture wax not observed. Conclusion : The mechanical failure of implant prostheses increased with the loading area farther from center of implant fixture. To reduce mechanical problem of internal joint type implant, surgical and prosthetic consideration is needed..

개선된 드릴 디자인을 적용한 간소화된 드릴링 과정에 관한 연구
윤지훈(부산대학교) ; 전계록(부산대학교) ; 윤미정(부산대학교) ; 허중보(부산대학교) ; 정창모(부산대학교) pp.368-376 https://doi.org/10.22974/jkda.2015.53.5.007
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Purpose : The objective of this research was to develop a more simplified drilling procedure with an enhanced implant drill. Materials and Methods : The drill enhanced design factors enabled implantation of Dia. 5.0mm fixture with only 2 times drilling which is more simplified drilling procedure. The enhanced drill was designed with 2 flutes, 2-phase or 3-phase formed drill tip and 25 degrees of helix angle. The proposed drilling procedure (2 times) was compared with a general drilling process (4 times) in terms of temperature changes, cutting time and ISQ value. Results : The simplified drilling procedure indicated less heat than a conventional drilling procedure (p<0.05). The enhanced drill showed significantly shorter drilling time than a conventional drill (p<0.05). On the other hand, higher insertion torque and ISQ value were observed on the the suggested drilling procedure than the conventional drilling procedure (p<0.05). Conclusion : A simplified drilling procedure with the newly designed drill could provide higher effectiveness and safety of dental implant operations under properly controlled external conditions, such as irrigation and RPM of drilling.

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