ISSN 0376-4672 THE JOURNAL OF THE KOREAN DENTAL ASSOCIATION Vol.53 No.5 2015. 5
The Journal of The Korean Dental Association May 2015 C O N T E N T S 297 326 294 377 380 389 391
News & News News &News News &News 294
www.kda.or.kr News &News News &News 295
T E L 2024-9290 F A X 468-4653 E-mail kdapr@chol.com
5월도비라 2015.5.8 3:43 PM 페이지1 mac001 PDF-IN 2540DPI 100LPI 고민스러운 순간의 지침 1 팽준영 임플란트 및 골이식술과 관련된 세균감염 2 김태인 Biomechanical Complications : 파절과 나사풀림 3 김보배, 고영경, 박준범 임프란트 주위염의 이해와 치료
Korean Dental Association ABSTRACT Bacterial infections after implant surgery and alveolar bone graft Department of Oral and Maxillofacial Surgery, Kyungpook National University School of Dentistry Jun-Young Paeng, D.D.S., Ph.D. 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. Key words : Biofilm, Bacterial infection, Dental Implant, Bone graft material, Sinus graft 298
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Korean Dental Association ABSTRACT Biomechanical Complications : Fracture and Screw loosening TaeWon Dental Clinic Tae in Kim, D.D.S., D.M.D., M.S.D., Ph.D. 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. Key words : biomechanical complication, fracture, screw loosening, force control 307
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Korean Dental Association ABSTRACT Treatment considerations in peri-implantitis Department of Periodontics, College of Medicine, The Catholic University of Korea Bo-Bae Kim, D.D.S., M.S.D., Young kyung Ko, D.D.S., M.S.D., Ph.D., Jun-Beom Park, D.D.S., M.S.D., Ph.D. 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. Key words : Peri-implantitis, Periodontal debridement, Surface properties, Titanium 318
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임상-3 박준범 2015.5.8 3:47 PM 페이지323 mac001 PDF-IN 2540DPI 150LPI 임프란트 주위염의 이해와 치료 그림 7. 기구조작 후 공초점 현미경으로 관찰 한 machined 티타늄 표면 (A) EMS-metal, (B) EMS-plastic, (C) Satelec-metal, (D) Satelec-plastic, (E) toothbrush, (F) rotating titanium brush 그림 8. 기구조작 후 공초점 현미경으로 관찰 한 sandblasted and acid-etched 티타늄 표면 (A) EMS-metal, (B) EMS-plastic, (C) Satelec-metal, (D) Satelec-plastic, (E) toothbrush, (F) rotating titanium brush Machined와 sandblasted and acid-etched Ⅴ. 결론 표면 모두에서 스케일러 팁과 티타늄 브러쉬를 사용하 였을 때, 기존 표면에서 스크래치 라인을 관찰할 수 있 임프란트를 식립한 환자는 반드시 정기적으로 병원 었다. 하지만, machined 표면에서 초음파 금속 팁 에 내원하여 유지 관리를 받아야 하며, 내원할 때마다 은 표면을 더 거칠게 만들지만 sandblasted and 임프란트 식립 부위를 정밀히 검사하여 염증의 징후를 acid-etched 표면에서는 표면 거칠기가 통계학적으 보 이 는 지 확 인 해 야 한 다 21). 또 한 기 계 적 인 로 유의미하게 증가하지 않았다. 또한 티타늄 브러쉬 debridement를 시행할 때, machined 표면에서는 를 사용하였을 때에도 거칠기 변수가 유의미하게 변화 초음파 금속 팁은 표면을 더 거칠게 하므로 사용을 자 되지 않았다. 제하는 것이 좋고, sandblasted and acid- 대한치과의사협회지 제53권 제5호 2015 323
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ORIGINAL ARTICLE 1 ABSTRACT Department of Periodontology, School of Dentistry, Chosun University Hee-Jong Shin, Sang-Joun Yu, Byung-Ock Kim* Key words : Aged, Dental implants, Cumulative survival rate 326
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ORIGINAL ARTICLE 1. Study population and Materials 2. Methods 328
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ORIGINAL ARTICLE 1. Survival rate according host related factors 330
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ORIGINAL ARTICLE 2. Survival rate according implant related factors 333
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ORIGINAL ARTICLE 3. Time and type of failures (Table 13) 4. Complication 339
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ORIGINAL ARTICLE 2 ABSTRACT Application of rhbmp-2 loaded collagen membrane on the buccal plate for ridge preservation: a pilot study in dogs 1) Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea 2) Research Institute for Periodontal Regeneration, Department of Periodontology, College of Dentistry, Yonsei University Hyun-Chang Lim 1), Min-Soo Kim 2), Cheryl Yang 2), Jung-Seok Lee 2), Seong-Ho Choi 2), Ui-Won Jung 2) 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. Key words : collagen membrane, rhbmp-2, ridge preservation, ridge resorption 348
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ORIGINAL ARTICLE 3 ABSTRACT Effect of intra-crown cantilever on mechanical strength of internal conical joint type implant 1) Associate professor, 2 Assistant professor, 3) Professor Department of Prosthodontics, College of Dentistry Pusan National University 4) Department of Prosthodontics, In-Je University Haeundae Paik Hospital Mi-Jung Yun 1), D.D.S.,M.S.D.,Ph.D., Jung-Bo Huh 1), D.D.S.,M.S.D.,Ph.D., Chang-Mo Jeong 3), D.D.S.,M.S.D.,Ph.D., Young-Chan Jeon 3), D.D.S.,M.S.D.,Ph.D., Eun-Sook Kang 4) 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.. Key words : cantilever, fatigue test, internal conical joint type implant 360
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ORIGINAL ARTICLE 4 ABSTRACT A study on simplified procedure of enhanced designed implant drill Department of Biomedical Engineering School of Medicine 1, Department of Prosthodontics School of Dentistry Pusan National University Pusan 2 Ji-Hoon Yoon 1, Gye Rok Jeon 1, Mi-Jung Yun 2, Jung-Bo Huh 2, Chang Mo Jeong 2 * 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. Key words : drill design, simplified drilling procedure, heat generation, cutting efficiency, initial stability 368
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E v e n t C a l e n d a r May Sponsor : Texas Dental Association Event Dates : 5/7/2015 thru 5/10/2015 Location : Henry B Gonzalez Convention Center City : San Antonio State : TX Country : USA Exhibits : Y Booths/Tables : 450 Contact : Ms. Sandy Blum Website : www.tda.org Email : sblum@tda.org Sponsor : Tennessee Dental Association Event Dates : 5/7/2015 thru 5/9/2015 Location : Nashville Convention Center City : Nashville State : TN Country : USA Exhibits : Y Booths/Tables : 120 Contact : Ms. Sharon Melvin Website : www.tenndental.org Email : sam@tenndental.org Event Dates : 5/7/2015 thru 5/9/2015 City : Chicago State : IL Country : USA Exhibits : N Contact : Ms. GraceAnn Pastorelli Address : 211 East Chicago Avenue City, State, Postal Code : Chicago, IL 60611-2678 Phone : (312) 440-2882 Fax : (312) 440-7494 Internet Site : www.ada.org Sponsor : Conference and Meeting Services Event Dates : 5/13/2015 thru 5/16/2015 City : Chicago State : IL Country : USA Exhibits : N Contact : Ms. Glynis Wilkins Organization : Conference and Meeting Services Address : 211 East Chicago Avenue City, State, Postal Code : Chicago, IL 60611-2678 Phone : (312) 440-2500 Fax : (312) 440-7494 E-Mail : online@ada.org Internet Site : www.ada.org Session Description : Annual Session Sponsor : North Carolina Dental Society Event Dates : 5/14/2015 thru 5/17/2015 Location : Kingston Plantation Embassy Suites City : Myrtle Beach State : SC Country : USA Exhibits : Y Booths/Tables : 125 Contact : Ms. Priscilla M Allen Website : www.ncdental.org Email : pallen@ncdental.org Session Description : Annual Session Sponsor : South Dakota Dental Association Event Dates : 5/14/2015 thru 5/16/2015 Location : Sioux Falls City : Sioux Falls State : SD Country : USA Exhibits : Y Booths/Tables : 65 Contact : Ms. Brenda Goeden Website : www.sddental.org Email : brenda.goeden@sddental.org June Sponsor : Associazione Italiana Odontoiatri Event Dates : 6/11/2015 thru 6/13/2015 Location : Chia Laguna Resort City : Chia, Sardinia Country : Italy Exhibits : N 377
E v e n t C a l e n d a r Contact : aiosardegna@aio.it Website : congress2015.aio.it/index.php Email : aiosardegna@aio.it Sponsor : Florida Dental Association Event Dates : 6/11/2015 thru 6/13/2015 Location : Gaylord Palms Resort/Convention Ctr City : Kissimmee State : FL Country : USA Exhibits : Y Booths/Tables : 325 Contact : Ms. Crissy Tallman Website : www.floridadentalconvention.com Email : ctallman@floridadental.org Session Description : Pacific Northwest Dental Conference Sponsor : Washington State Dental Association Event Dates : 6/11/2015 thru 6/12/2015 City : Bellevue State : WA Country : USA Exhibits : Y Booths/Tables : 173 Contact : Ms. Amanda Tran Website : www.wsda.org/pndc Email : amanda@wsda.org Sponsor : Maine Dental Association Event Dates : 6/12/2015 thru 6/13/2015 Location : Samoset Resort City : Rockport State : ME Country : USA Exhibits : Y Booths/Tables : 47 Contact : Ms. Cindy Sullivan Website : www.medental.org Email : csullivan@medental.org Sponsor : Idaho State Dental Association Event Dates : 6/17/2015 thru 6/19/2015 Location : TBD City : Boise State : ID Country : USA Exhibits : Y Booths/Tables : 60 Contact : Ms. Rachel Wickham Website : www.theisda.org Email : Rachel@TheISDA.org Sponsor : Idaho State Dental Association Event Dates : 6/17/2015 thru 6/19/2015 Location : Sun Valley Resort City : Sun Valley State : ID Country : USA Exhibits : Y Booths/Tables : 60 Contact : Ms. Rachel Wickham Website : www.theisda.org Email : Rachel@TheISDA.org Sponsor : Wyoming Dental Association Event Dates : 6/18/2015 thru 6/21/2015 Location : Holiday Inn City : Rock Springs State : WY Country : USA Exhibits : Y Booths/Tables : 25 Contact : Ms. Diane Bouzis Website : www.wyda.org Email : wyodental@gmail.com Event Dates : 6/26/2015 thru 6/27/2015 City : Chicago State : IL Country : USA Exhibits : N Contact : Ms. Marcia Cebula Address : 211 East Chicago Avenue City, State, Postal Code : Chicago, IL 60611-2637 Phone : (312) 440-2806 Fax : (312) 440-7494 E-Mail : cebulam@ada.org Internet Site : www.ada.org 378
E v e n t C a l e n d a r July Event Dates : 7/16/2015 thru 7/18/2015 City : Chicago State : IL Country : USA Exhibits : N Contact : Ms. Amy Radosevich Email : Radosevicha@ada.org Sponsor : Membership and Dental Society Services Event Dates : 7/20/2015 thru 7/23/2015 City : Chicago Country : USA Exhibits : N Contact : Mr. Ron Polaniecki Organization : Membership and Dental Society Services Address : 211 East Chicago Avenue City, State, Postal Code : Chicago, IL 60611 Phone : (312) 440-2599 Fax : (312) 440-2883 E-Mail : polanieckir@ada.org Internet Site : www.ada.org Sponsor : Georgia Dental Association Event Dates : 7/23/2015 thru 7/26/2015 Location : Omni Amelia Island Plantation City : Amelia Island State : FL Country : USA Exhibits : Y Booths/Tables : 67 Contact : Ms. Patrice Williams Website : www.gadental.org Email : williams@gadental.org August Event Dates : 8/6/2015 thru 8/7/2015 City : Chicago State : IL Country : USA Exhibits : N Contact : Mr. Paul Dohearty Address : 211 E. Chicago Ave City, State, Postal Code : Chicago, IL 60611 Phone : (312) 440-4653 Event Dates : 8/19/2015 thru 8/22/2015 City : Ghent Country : Belgium Exhibits : N Contact : To be determined Website : espmh.org Email : emailto:bert.gordijn@dcu.ie Event Dates : 8/19/2015 thru 8/22/2015 City : Ghent Country : Belgium Exhibits : Y Contact : To be determined 379
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