• Title/Summary/Keyword: Implant placement

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Evaluation of peri-implant bone using fractal analysis (프랙탈 분석을 통한 임플란트 주변골 평가)

  • Jung Yun-Hoa
    • Imaging Science in Dentistry
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    • v.35 no.3
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    • pp.121-125
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    • 2005
  • Purpose : The purpose of this study was to investigate whether the fractal dimension of successive panoramic radiographs of bone after implant placement is useful in the characterization of structural change in alveolar bone. Materials and Methods. Twelve subjects with thirty-five implants were retrospectively followed-up from one week to six months after implantation. Thirty-six panoramic radiographs from twelve patients were classified into 1 week, 1-2 months and 3-6 months after implantation and digitized. The windows of bone apical and mesial or distal to the implant were defined as periapical region of interest (ROI) and interdental ROI; the fractal dimension of the image was calculated. Results There was not a statistically significant difference in fractal dimensions during the period up to 6 months after implantation. The fractal dimensions were higher in 13 and 15mm than 10 and 11.5mm implant length at interdental ROIs in 3-6 months after implantation (P<0.01). Conclusion : Longer fixtures showed the higher fractal dimension of bone around implant. This investigation needs further exploration with large numbers of implants for longer follow-up periods.

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An implant-supported removable partial denture on milled bars to compromise the inadequate treatment plan: a clinical report

  • Kim, Jee-Hwan;Lee, Jae-Hoon
    • The Journal of Advanced Prosthodontics
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    • v.2 no.2
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    • pp.58-60
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    • 2010
  • Presurgical prosthetic treatment planning is critical for the success of the implant prosthesis. Inadequate treatment plan, due to insufficient discussion between prosthodontist, and surgeon, may result in poor prognosis. A 26-year-old male patient was referred for prosthodontic treatment after implant was placed in the area of teeth #17,16, 22, 25 and 27, without adequate discussion nor the treatment planning between oral surgeon and prosthodontist. It was found that the patient had two hopeless teeth, and a severely resorbed alveolar ridge. Additional tooth extraction was needed and the type of definitive prosthesis was shifted from fixed type to removable one. Proper pre-surgical treatment planning is essential for the good prognosis. Implant-supported removable prosthesis on milled bars may be a useful treatment option in patients with incorrect angled placement on severely resorbed alveolar ridge.

Rehabilitation using short implants in the mandibular fully edentulous patient with severe alveolar bone loss: a case report (치조골 흡수가 심한 하악 완전 무치악 환자에서 짧은 임플란트를 이용한 고정성 보철 수복 증례)

  • Hwang, Hee-Sun;Lee, Ki-Young;Kim, Yu-Lee
    • The Journal of the Korean dental association
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    • v.54 no.9
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    • pp.692-702
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    • 2016
  • A short dental implant is considered as possible solution in difficult clinical situations for the placement of a regular length implant. Using a short implant avoiding more invasive surgical procedures simplifies the treatment plan and shortenes the duration of treatment. In this case, 71-year-old female came up with discomfort from her old mandibular denture. As she had fully edentulous mandible and got a negative feedback from removable denture, implant-supported fixed prosthesis was planned. Six short implants were placed on her mandible with severe alveolar bone loss. After 1 year follow up period, implants were well retained with any other abnormal findings. The patient was satisfied with her prostheses and satisfactory outcomes were attained in terms of both esthetic and functional clinical results.

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