• Original Article

    Evaluation of Dental Implant Stability with or without Photoactivated Surface Treatment
    Yu-ri Heo, Jaeseok Kang, Mee-Kyoung Son
    Purpose: This study aimed to evaluate the stability of two implant groups treated either only with sandblasting and acid etching or photoactivation ... + READ MORE
    Purpose: This study aimed to evaluate the stability of two implant groups treated either only with sandblasting and acid etching or photoactivation af ter sandblasting and acid etching, using resonance f requency analysis (RFA).Materials and Methods: We investigated 50 implants in 25 patients (12 men and 13 women). Twenty-five implants were treated with sandblasting and acid etching, and 25 with photoactivation. We recorded the implant stability quotient (ISQ) value on the day of implant placement and consecutively every 2 weeks f or 16 weeks f or each implant. RFA was used f or the direct measurement of implant stability. We compared mean ISQ values using a repeated-measures analysis of variance test.Results: The mean ISQ values at surgery and 16 weeks in implants treated only with sandblasting and acid etching were 77.8 ± 6.7 and 83.2 ± 2.5, respectively, while in those treated with f urther photoactivation were 78.9 ± 5.3 and 84.1 ± 3.3, respectively. The photoactivated implants showed higher ISQ values than those without photoactivated surface treatment. However, there were no significant differences between the two implant groups.Conclusion: Both implant groups showed high implant stability in clinical practice. The photoactivated implant surf ace appears to have higher implant stability than that without photoactivation by increasing the hydrophilic surface. - COLLAPSE
    June 2021
  • Clinical or Case Report

    The Clinical View of Immediate Implant Placement: Case Series
    Sang-Chang Lee, Bo-Yun Choi
    Tooth loss is common and usually a result of disease or trauma. Theref ore, the use of dental implants to replace missing ... + READ MORE
    Tooth loss is common and usually a result of disease or trauma. Theref ore, the use of dental implants to replace missing teeth has a long history. Immediate implant placement is a common and acceptable clinical method. Immediate implant placement was introduced as a possible means to limit bone resorption and reduce the number of surgical procedures following tooth extraction. However, immediate implant placement is a challenging surgical procedure and requires proper case selection and surgical techniques. Furthermore, there is a lot of controversy regarding the case selection criteria for immediate implant placement. If the following conditions are present: complete debridement of inflammatory tissue, presence of bone for initial stability, and sof t tissue control, immediate implant placement will be usef ul and successf ul in many cases. The purpose of this report is to illustrate the usability and various applications of immediate implants in several cases. - COLLAPSE
    June 2021
  • Clinical or Case Report

    The Sausage Technique using Collagen Membrane without Autogenous Bone Graft: A Case Report
    Sung-Jo Lee
    Various techniques have been introduced for the guided bone regeneration procedure. Among these, the sausage technique using a natural collagen membrane has ... + READ MORE
    Various techniques have been introduced for the guided bone regeneration procedure. Among these, the sausage technique using a natural collagen membrane has many advantages. This report describes two cases wherein the sausage technique was employed in the maxillary anterior area using deproteinized bovine bone mineral (DBBM) and native bilayer collagen membrane (NBCM) without autogenous bone graf t. In both cases, sufficient horizontal bone regeneration for implant placement was achieved. In addition, the bone and implant conditions were maintained without any complications maintained for more than 15 months. Within the limitations of this report, the sausage technique using NBCM with DBBM was able to achieve satisfactory horizontal alveolar bone augmentation for implant placement in the maxillary anterior area. - COLLAPSE
    June 2021
  • Clinical or Case Report

    Implant Surgery for Fixed Implant-supported Prostheses in the Edentulous Mandible: A Case Report
    Youngdeok Chee
    Edentulism following extraction of existing teeth due to dental caries, severe periodontal disease, or surgical damage can be treated with implants using ... + READ MORE
    Edentulism following extraction of existing teeth due to dental caries, severe periodontal disease, or surgical damage can be treated with implants using complete dentures, implant-supported overdentures, or fixed implant-supported prostheses. Fixed implant-supported prostheses have higher masticatory eff iciency than removable prostheses and may provide patients with psychological stability. Moreover, when compared with traditional removable complete dentures, fixed implant-supported prostheses have better stability and retention, help improve the mental health of the patients, and provide them with opportunities to respond more actively to the society. In this report, patients preferred fixed implant-supported prostheses, which were advantageous in terms of masticatory efficiency, patient satisfaction, and distribution of stress compared to removable prostheses. Thus, they were considered the first priority. In case 1, a fixed implant-supported prosthesis was fabricated by placing 12 implants in a patient with edentulous mandible who was using a mandibular complete denture, but complained of denture displacement and masticatory dysf unction. In case 2, a fixed implant-supported prosthesis was fabricated by placing eight implants in a patient with an edentulous mandible whose entire mandibular dentition had been extracted due to severe periodontitis. Satisfactory f unctional and esthetic outcomes were achieved with fabrication and placement of fixed implant-supported prostheses in these patients. - COLLAPSE
    June 2021
  • Clinical or Case Report

    CAD-CAM fabricated Milled-bar and Implant Overdenture after Reconstruction with a Fibular Free Flap: A Clinical Report
    Yuseung Yi
    This clinical report describes the oral rehabilitation of a patient who underwent total mandibulectomy and subsequent fibular f ree flap reconstruction. The ... + READ MORE
    This clinical report describes the oral rehabilitation of a patient who underwent total mandibulectomy and subsequent fibular f ree flap reconstruction. The patient had adverse sof t tissue conditions for a tissue-borne prosthesis and placement of a sufficient number of implants to support a fixed prosthesis was not possible. Therefore, a titanium milled bar supported by four implants was fabricated, and a fabricated overdenture was placed on the milled bar without overlying sof t tissue using CAD-CAM technology. A series of treatment procedures for the patient and their follow-up has been presented in this report. - COLLAPSE
    June 2021