• Original Article

    Clinical Evaluation of Vertical Ridge Augmentation Using Titanium Reinforced PTFE membrane

    타이타늄 강화 PTFE 차단막을 이용한 수직적 골증대술의 임상적 평가

    Dong-Joo Sun, Yeon-Ah Oh, Jeoung-A Yu and Dong-Woon Lee

    선 동주, 오 연아, 유 정아, 이 동운

    Purpose: This study reports four cases of vertical ridge augmentation using titanium reinforced Polytetrafluoroethylene (TR-PTFE) membranes. Material and Methods: Bone augmentation was ... + READ MORE
    Purpose: This study reports four cases of vertical ridge augmentation using titanium reinforced Polytetrafluoroethylene (TR-PTFE) membranes. Material and Methods: Bone augmentation was performed using TR-PTFE membranes in four patients with a vertical bony defect (mean 6.5 ± 0.58 mm) who was scheduled to receive dental implants at the Department of Periodontology, Veterans Health Service Medical Center between January and December 2016. Vertical bony defects were measured intraoperatively using a probe and the exposure of membranes were assessed before and after suture removal and one month after the surgery. The gained area from the reoperation as well as the need for additional bone grafting during implant placement was assessed. Results: The exposure was maintained without inflammation in one site. Placing an implant led to an average of 5.25 ± 0.5 mm vertical augmentation, and none of the cases required additional bone transplantation. A total of ten implants were installed in 4 cases. Over at least 1-year of follow-up, all implants were functioned well. Conclusion: In this case study, bone augmentation using TR-PTFE membranes. led to satisfactory bone regeneration in defective areas with vertical bone resorption. In addition to a greater number of cases, histological assessments should be performed in the future to further substantiate these findings. - COLLAPSE
    March 2018
  • Original Article

    The Effect of Immediate or Delayed Suture After Transected Facial Nerve on Rats

    흰쥐에서 안면신경의 절단 후 즉시 및 지연 봉합간의 효과에 대한 연구

    Myunhwan Lee, Jun-Young Paeng, Jaemyung Ahn and Jongrak Hong

    이 명환, 팽 준영, 안 재명, 홍 종락

    Objectives: The purpose of this study was to compare immediate suture with delayed suture after nerve transected. Materials and Methods: A group ... + READ MORE
    Objectives: The purpose of this study was to compare immediate suture with delayed suture after nerve transected. Materials and Methods: A group of 39 rats of Sprague-Dawley rats (250-300 g) were used in this study. 24 rats ha d a operation for facial nerve transected and delayed suture (1week later, 4 weeks later) was done. For controls, 12 rats transected facial nerve and sutured immediately. Then evaluated the recovery of immediate suture type, delayed suture type. Results: In the feature of H&E, Luxol fast blue, histologic finding was similar in delayed suture group and immediate suture group. Conclusion: Delayed suture group and immediate suture group had little difference. Delayed suture is acceptable for nerve injury due to implant installation in human cases. - COLLAPSE
    March 2018
  • Original Article

    The Effect of Immediate or Delayed Suture After Transected Facial Nerve on Rats

    치과 페이스북 메시지에 대한 이용자 반응 연구

    Bo-Ram Shin, Im Hee Shin and Ji-Man Park

    신 보람, 신 임희, 박 지만

    Purpose: Although many dental clinics have actively managed social network service (SNS), there are few studies on the effects of messages produced ... + READ MORE
    Purpose: Although many dental clinics have actively managed social network service (SNS), there are few studies on the effects of messages produced by SNS of dental clinics. The purpose of this study was, targeting Facebook messages of dental clinics, to examine the effects of messages on users by types, and learn various variables that influence the effects of messages. Methods: In order to measure the effects of messages produced by SNS of dental clinics, the types of Facebook messages of dental clinics were divided into interacting type, information providing type, and playing type, and users’ responses were divided into message attitude, image of dental clinics, and word-of-mouth effect. Considering that the main users of Facebook are young people aged 20-30 s, this study targeted Facebook users aged 20-30 s, performed a survey targeting 292 young people, and conducted two sample t-test, one-way ANOVA, and regression analysis by using SPSS 19.0. Results: It could be found that, among the types of Facebook messages of dental clinics, interacting type has a positive effect in the aspect of image of dental clinics, information providing type in the aspect of message attitude, and playing type in the aspect of word-of-mouth effect. Also, it could be found that, among users’ responses, message attitude of information providing type has the greatest effect on users’ Responses. Users having experience of seeing messages and having intention of receiving dental information show more positive effects in the aspects of message attitude, image of dental clinics, and word-of-mouth effect. And it was analyzed that as the rate of SNS use increases, users’ Responses turns out to be more positive. Conclusion: This study has a meaning in that it expanded the range of typical researches from the media characteristics of SNS to the effects of SNS messages. The information providing type, interacting type, and playing type messages have all had a positive effect on the user response. The users who have experienced the dental facebook message expressed more positive response than ones who have not. Frequent exposure of dental Facebook messages can be of interest to users. - COLLAPSE
    March 2018
  • Original Article

    A Long-term Cumulative Survival Rate of Immediate Implants: Retrospective Study

    즉시 식립 임플란트의 장기적 누적생존율에 관한 후향적 연구

    Se-Jin Kim, Jun-Hwan Kim, Da-Jeong Namgung and Young Ku

    김 세진, 김 준환, 남궁 다정, 구 영

    The purpose of this study is to analyze 11-year cumulative survival rate on immediate implants placed between 2006 and 2016 at Seoul ... + READ MORE
    The purpose of this study is to analyze 11-year cumulative survival rate on immediate implants placed between 2006 and 2016 at Seoul National University Dental Hospital by one periodontist (Y. K). With an aggregate 185 implants were calculated 11-year cumulative survival rate with Life table method and assessed the effect of predictor variables with Kaplan-Meier analysis and Cox proportional hazard model. After a mean follow-up time 4.67 years, 16 implants failed and 169 survived among 185 implants. The overall cumulative survival rates at 5 and 11 years were 90% and 90%, respectively. No statistically significant influence was detected between the implant survival rates and the possible risk factors: gender, age, location, history of hypertension and diabetes, smoking, implant type, fixture diameter and length and bone graft. Within the limitations of this retrospective study, immediate implant placement is a reliable and predictable restoration procedure to replace missing teeth. - COLLAPSE
    March 2018
  • Review Article

    Review of Computer-assisted Implant Surgeries: Navigation Surgery System vs. Computer-guided Implant Template vs. Robot

    컴퓨터-보조 임플란트 수술에 대한 고찰: 네비게이션 수술 시스템 vs. 컴퓨터가이드 임플란트 템플릿 vs. 수술 로봇

    Ji-Man Park, Jongyub Kim and June-Sung Shim

    박 지만, 김 종엽, 심 준성

    In addition to the computer-guided implant template popularized in Korea recently, the navigation system and early-stage robot are becoming the new trend ... + READ MORE
    In addition to the computer-guided implant template popularized in Korea recently, the navigation system and early-stage robot are becoming the new trend in the field of computer-assisted implant surgery. The navigation surgery system tracks the position of patient and handpiece and displays them in real-time on CT data with pre-implant planning. The purpose of this article is to describe the operation principle and method, the advantages and disadvantages, and the accuracy studies of the navigation system. - COLLAPSE
    March 2018