The Korean Academy of Oral and Maxillofacial Implantology最新文献

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Clinical Results for Maxillary Implant Overdentures with Prosthetic Systems: A Literature Review 上颌种植覆盖义齿修复系统的临床效果:文献综述

The Korean Academy of Oral and Maxillofacial Implantology

Pub Date : 2018-06-01 DOI: 10.32542/IMPLANTOLOGY.20180010

Seonghee Choi, Sunjai Kim, Jae-Seung Chang

Copyright © 2018. The Korean Academy of Oral & Maxillofacial Implantology This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons. org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. OPEN ACCESS Background: The two-implant overdenture should be considered as the first treatment option for mandibular edentulous patients. But for the maxilla, there is no widely accepted consensus yet. In this study, implant survival rate, clinical evaluations, marginal bone loss of the maxillary overdenture were investigated. Materials and Methods: “Maxillary overdenture” was the key word of this study, and with the combination of “attachment system”, “implant number”, “implant survival rate”, “clinical evaluation” and “marginal bone loss”, 21 journals were searched by “Pubmed”. Results: There were no differences in the survival rate according to the attachment systems and implant numbers. Especially, maxillary overdentures with four or more implants showed excellent results. Clinical parameters and marginal bone loss were not affected by attachment systems and implant numbers. Conclusion: For successful maxillary implant overdenture treatment, four or more implants can be considered using various attachment systems.

版权所有©2018。韩国口腔颌面种植学会这是一篇基于知识共享署名非商业许可(http://creativecommons)的开放获取文章。(http://www.licenses/bync/4.0/)，允许在任何媒介上不受限制地进行非商业使用、分发和复制，前提是正确引用原始作品。背景:双种植体覆盖义齿是下颌无牙患者的首选治疗方案。但是对于上颌骨，目前还没有被广泛接受的共识。本研究对种植体成活率、临床评价、上颌覆盖义齿边缘骨质流失进行了研究。材料与方法:本研究以“上颌覆盖义齿”为关键词，结合“附着系统”、“种植体数量”、“种植体存活率”、“临床评价”和“边缘骨质流失”，在Pubmed检索21种期刊。结果:不同的附着体系统和种植体数量对成活率无显著影响。上颌覆盖义齿有4个或更多种植体，效果较好。临床参数和边缘骨丢失不受附着系统和种植体数量的影响。结论:上颌种植覆盖义齿治疗成功时，可考虑使用不同的附着体系统。

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引用次数: 0

Placement of a Retro-fitted Single Crown Restoration Under an Existing Denture by Employing Digital Technology: A Case Report 利用数字技术在现有义齿下修复单冠修复体的安置:1例报告

The Korean Academy of Oral and Maxillofacial Implantology

Pub Date : 2018-06-01 DOI: 10.32542/IMPLANTOLOGY.20180009

K. Oh, June-Sung Shim

Copyright © 2018. The Korean Academy of Oral & Maxillofacial Implantology This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons. org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. OPEN ACCESS This article demonstrates a case that successfully placed a retro-fitted crown restoration under an existing denture by employing the characteristics of digital technology. Scanned data of the arch that involves edentulous area, and of the old denture itself were obtained and superimposed on each other. A virtual crown was modeled in computer-aided design software with marginally larger than the ideal size. The old denture was regarded as an adjacent tooth in the setting menu so that the portion of the virtual crown that extends over to the old denture could be automatically deleted by selecting the “Cut intersections” option. This retro-fitted crown was milled with a polymethylmethacrylate disc after a minor adjustment of its contour. The crown and the old denture were placed in the patient’s mouth, and resulted in favorable esthetic outcome and occlusion, showing proper relationship with the old denture.

版权所有©2018。韩国口腔颌面种植学会这是一篇基于知识共享署名非商业许可(http://creativecommons)的开放获取文章。(http://www.licenses/bync/4.0/)，允许在任何媒介上不受限制地进行非商业使用、分发和复制，前提是正确引用原始作品。本文展示了一个利用数字技术的特点，成功地在现有的义齿下放置了改良的冠修复体的案例。获得涉及无牙区弓的扫描数据和旧义齿本身的扫描数据，并相互叠加。在计算机辅助设计软件中制作一个比理想尺寸稍大的虚拟冠。在设置菜单中将旧义齿视为邻牙，通过选择“Cut intersection”选项可以自动删除延伸到旧义齿的虚拟冠部分。在对其轮廓进行轻微调整后，用聚甲基丙烯酸甲酯圆盘铣削了这个翻新的冠。牙冠与旧义齿放置于患者口腔内，美观效果良好，牙合良好，与旧义齿关系良好。

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引用次数: 1

Comparison of Healing of Allograft and Autogenous Bone Implanted in the Skull Defect of Beagle Dog: Preliminary Animal Study 同种异体骨与自体骨移植修复比格犬颅骨缺损的初步动物研究

The Korean Academy of Oral and Maxillofacial Implantology

Pub Date : 2018-06-01 DOI: 10.32542/implantology.20180006

Jung-Gon Lee, Sang-Yun Kim, P. Yun, Young-Kyun Kim

Copyright © 2018. The Korean Academy of Oral & Maxillofacial Implantology This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons. org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. OPEN ACCESS Purpose: The purpose of this study was to evaluate the healing process af ter autogenous and allogenous bone grafts for calvarial bone defects in beagles. Materials and Methods: Two defects were formed in the skulls of two beagles and then grafted with a f reeze-dried bone allograf t (Double-Oss) and an autogenous bone chip, respectively. The clinical, radiographic, and histomorphometric examination results of the specimens taken 4 and 8 weeks after bone grafting were analyzed. Results: The clinical, radiographic, and histological assessments revealed that 4 and 8 weeks after transplant, the beagle that received an autogenous bone graft was more likely to have high new bone formation than the beagle that had an allogenous bone. Four weeks after the transplant, the proportions of new bone formation were 11.5% and 35.8% in the allogenous and autogenous bones, respectively. Eight weeks af ter the transplant, the proportion of new bone formation with the allogenous bone increased significantly to 41.4% but was still less than the 65.6% with the autogenous bone. Conclusion: The amount of new bone formation was smaller and the formation rate was slower with allogenous bone graft than with autogenous bone graft.

版权所有©2018。韩国口腔颌面种植学会这是一篇基于知识共享署名非商业许可(http://creativecommons)的开放获取文章。(http://www.licenses/bync/4.0/)，允许在任何媒介上不受限制地进行非商业使用、分发和复制，前提是正确引用原始作品。开放获取目的:本研究的目的是评估小猎犬颅骨骨缺损自体和异体骨移植后的愈合过程。材料与方法:在2只小猎犬的颅骨上形成2个缺损，分别用同种异体冻干骨移植体(Double-Oss)和自体骨芯片进行骨移植。分析植骨后4周和8周标本的临床、影像学和组织形态学检查结果。结果:临床、影像学和组织学评估显示，移植后4周和8周，接受自体骨移植的小猎犬比接受同种异体骨移植的小猎犬更有可能有较高的新骨形成。移植后4周，异体骨和自体骨的新骨成形率分别为11.5%和35.8%。移植后8周，同种异体骨的新骨形成比例显著增加至41.4%，但仍低于自体骨的65.6%。结论:与自体骨移植相比，同种异体骨移植的新生骨形成量更少，形成速度更慢。

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引用次数: 0

Assessment of Bone Quality in Pre-dental Implant Site Using Periapical, Panoramic and Computed Tomography 应用根尖周、全景和计算机断层扫描评估牙前种植体骨质量

The Korean Academy of Oral and Maxillofacial Implantology

Pub Date : 2018-06-01 DOI: 10.32542/IMPLANTOLOGY.20180007

D. Shin, Kyeong-Mee Park, Jaejoon Hwang, W. Park, K. Kim

Purpose: Radiological evaluation of bone quality as well as the shape of the alveolar bone of the edentulous part to be placed is very important f or successf ul implant placement. Recently, threedimensional analysis using computed tomography and cone beam computed tomography has been actively used before implant surgery, but periapical and panoramic radiographs have been used for a long time to evaluate alveolar bone using low radiation doses. The purpose of this study was to compare the Hounsfield unit value of CT af ter dividing maxillary, mandibular, anterior, and posterior teeth into whether periapical and panoramic radiographs could be effectively used for bone quality evaluation. Materials and Methods: The periapical x-ray, panoramic x-ray, and conventional CT were taken from a total of 100 patients who have undergone the implant treatment. For 3D analysis, the virtual implants with a diameter of 4 mm and a length of 10 mm were placed in the implant planning software and the bone quality of 1 mm circumference was measured by Hounsfield unit value. Periapical x-ray and panoramic x-ray were also evaluated for bone quality. The degree of agreement among them was evaluated. Results: In 3D image analysis, reformatted cross-sectional, panoramic image analysis, bony quality evaluation similar to CT analysis was possible in maxillary anterior/posterior teeth with periapical Abstract Original Article

目的:对无牙部分的骨质量及牙槽骨形态进行影像学评价对种植体植入的成功至关重要。近年来，使用计算机断层扫描和锥形束计算机断层扫描进行三维分析已在种植体手术前得到积极应用，但长期以来，使用低辐射剂量的根尖周和全景x线片对牙槽骨进行评估。本研究的目的是比较上颌、下颌、前牙和后牙划分后CT的Hounsfield单位值，以确定根尖周片和全景片是否可以有效地用于骨质量评价。材料与方法:对100例接受种植治疗的患者进行根尖周x线、全景x线及常规CT检查。在三维分析中，将直径为4 mm、长度为10 mm的虚拟种植体放入种植体规划软件中，采用Hounsfield单位值测量周长为1 mm的骨质量。根尖周x线和全景x线评价骨质量。评估了它们之间的一致程度。结果:在三维图像分析、重构横切面图像分析、全景图像分析中，可以对尖周上颌前/后牙进行类似于CT分析的骨质量评价

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引用次数: 0

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