• Original Article

    Influence of Rotary Instrument Mineral Oil Lubricant on the Handpiece for Dental Implant: In Vitro and In Vivo Study

    치과용 임플란트 식립에 사용되는 핸드피스의 윤활제가 생체내 미치는 영향

    Heon-Young Kim, Min-Kyoung Kim, Il-Seok Jang, Ju-Dong Song, Sun-Jong Kim, Jin-Woo Kim

    김헌영, 김민경, 장일석, 송주동, 김선종, 김진우

    Purpose: The purpose of this study was to evaluate the effect of oil lubricant for dental handpiece and to investigate the relationship ... + READ MORE
    Purpose: The purpose of this study was to evaluate the effect of oil lubricant for dental handpiece and to investigate the relationship to the prognosis of dental implants. Materials and Methods: An experiment was conducted on the residual amount of lubricant in the handpiece and the amount of lubricant that will remain in the fixture after drilling. Based on the data, biocompatibility was assessed through the assessment of cytotoxicity with L929 cells and 33 SD rats. This experiment was conducted through an 8 mm-long, 3.5 mm-diameter fixture(Osstem implant Co., Ltd., Korea) and lubricant(KaVo Dental GmbH., Germany) for handpiece. Results: The amount of lubricants in the handpiece decreased with the removal phase, but some of them could be confirmed to remain. In the cytotoxicity assessment, the survival rate was lower over 100 ppm. In experiments with SD rat, there was no significant difference among groups. Conclusion: The surface of the dental implants could be contaminated from some leftover lubricants in the handpiece. Although the lubricant is the biocompatible in cytotoxicity test and SD rat test, it does not mean it has no effect on osseointegration. - COLLAPSE
    March 2020
  • Clinical or Case Report

    Bone Augmentation with Fibrin Sealant during Guided Bone Regeneration for Implant Surgery

    임플란트 수술을 위한 골유도 재생술 (Guided bone regeneration)시 조직접착제를 사용한 골증대술

    Young-deok Chee

    지영덕

    The idea of using a fibrin sealant in the augmentation of the alveolar ridge defects seems attractive because it can produce a ... + READ MORE
    The idea of using a fibrin sealant in the augmentation of the alveolar ridge defects seems attractive because it can produce a dense fibrin clot with sufficient adhesive strength to hold particulate bone in a required configuration. The aim of this clinical investigation is to evaluate the possibility of obtaining bone augmentation around osseointegrated implants by using fibrin sealing system with grafting material. Buccal and lingual local anesthesia was injected. A lingual crestal incision was made connecting the edentulous space. Vertical buccal releasing incisions were performed. A full-thickness flap was then elevated until the mucogingival junction to achieve a tension-free adaptation of the soft tissues. The defects were filled with granules of allograft and alloplast mixed with a fibrin-fibronectin sealing system. Seven-months after surgery, implants were inserted in a prosthetically driven position. At 2nd surgery, a hard bone like tissue was detectable at the defect sites receiving allograft bone grafts with a fibrin-fibronectin sealing system and well maintained. Clinical cases show that the vertical alveolar bone height is well-maintained after alveolar bone augmentation using fibrin sealant because of its sufficient adhesive strength to hold particulate bone in a required configuration. - COLLAPSE
    March 2020
  • Clinical or Case Report

    Vestibuloplasty around Dental Implants Using Modified Periosteal Fenestration (mPF): Case Series

    변형된 골막천공술을 사용한 임플란트 주위 전정성형

    Won-Pyo Lee, Young-Sun Kwon

    이원표, 권영선

    Severe plaque accumulation might occur in the shallow vestibule around dental implants, resulting in a higher occurrence of peri-implant mucositis or peri-implantitis ... + READ MORE
    Severe plaque accumulation might occur in the shallow vestibule around dental implants, resulting in a higher occurrence of peri-implant mucositis or peri-implantitis. This case series aimed to evaluate the efficiency of modified periosteal fenestration (mPF) for treating a patient with a shallow vestibule and reduced width of attached mucosa around dental implants. The mPF technique was performed by modifying the traditional periosteal fenestration method. Initially, the partial-thickness apically positioned flap (APF) was performed. After that, horizontal parallel periosteal fenestration incision was done from the coronal border of the APF toward the crown of the implant at 2 mm. A full thickness flap elevation in the apical direction was performed to create an osseous exposure of 2mm or more from the incision site. A linear island of denuded bone was thus produced. The wound so created was covered with resorbable periodontal pack. In all three patients, sufficient dimension of attached mucosa and deepened vestibule around dental implants were gained and maintained during the follow-up period ranging from 12 to 18 months. Thus, the mPF procedure, which we first suggested, might be a powerful alternate treatment modality for vestibuloplasty around dental implants, to traditional APF only or free gingival graft procedures. - COLLAPSE
    March 2020
  • Clinical or Case Report

    Free Gingival Graft to Gain Peri-implant Keratinized Mucosa

    임플란트 주위 각화 점막을 획득하기 위한 유리치은 이식술

    Jungwon Lee, Jun-Beom Lee, Yong-Moo Lee

    이정원, 이준범, 이용무

    This case report presents three cases of free gingival graft around implants to increase the keratinized mucosa. The inadequate keratinized mucosa around ... + READ MORE
    This case report presents three cases of free gingival graft around implants to increase the keratinized mucosa. The inadequate keratinized mucosa around implants could be increased following the free gingival graft procedure. The sufficient keratinized mucosa around implants can facilitate the prosthetic procedure and allow the patient to maintain good oral hygiene without any discomfort or pain during tooth brushing. Lingualized incision was given and partial thickness flap was performed in the recipient site and autogenous graf t harvested f rom palatal gingiva was sutured. Then, prosthetic procedure was performed 2 months after the free gingival graft. The autogenous graft of palatal gingiva increased the width of keratinized mucosa around implants with mild shrinkage. - COLLAPSE
    March 2020
  • Clinical or Case Report

    Maxillary Implant-supported Hybrid Prosthesis Fabricated using a Polyetherketoneketone Framework: A Case Report
    Ji Hoon Jun, Kyung Chul Oh, Hong Seok Moon
    This clinical report describes a case involving a 74-year-old woman with maxillary edentulism who was successf ully treated using an implant-supported hybrid ... + READ MORE
    This clinical report describes a case involving a 74-year-old woman with maxillary edentulism who was successf ully treated using an implant-supported hybrid prosthesis. The f ramework of the prosthesis was fabricated using polyetherketoneketone (PEKK), which is a high-performance polymer, and individual lithium disilicate ceramic crowns were cemented for optimal esthetics. No mechanical or biological complications were observed during a 3-year follow-up period. Further clinical studies and long-term clinical data regarding the usef ulness of PEKK as a f ramework material for dental prostheses are necessary. - COLLAPSE
    March 2020