• Title/Summary/Keyword: prospective

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A prospective multicenter clinical study on the efficiency of detachable ball- and spring-retained implant prosthesis

  • Min-Jung Kim;Won-Tak Cho;Su-Hyun Hwang;Ji-Hyeon Bae;Eun-Bin Bae;June-Sung Shim;Jong-Eun Kim;Chang-Mo Jeong;Jung-Bo Huh
    • The Journal of Advanced Prosthodontics
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    • v.15 no.4
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    • pp.202-213
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    • 2023

  • PURPOSE. This prospective clinical study was conducted to evaluate the clinical usefulness of the freely detachable zirconia ball- and spring-retained implant prosthesis (BSRP) through a comparative analysis of screw- and cement-retained implant prosthesis (SCRP). MATERIALS AND METHODS. A multi-center, randomized, prospective clinical study evaluating the clinical usefulness of the detachable zirconia ball- and spring-retained implant prostheses was conducted. Sixty-four implant prostheses in 64 patients were examined. Periodic observational studies were conducted at 0, 3, 6, and 12 months after delivery of the implant prosthesis. Factors such as implant success rate, marginal bone resorption, periodontal pocket depth, plaque and bleeding index, and prosthetic complications were evaluated, respectively. RESULTS. During the 1-year observation period, all implants survived without functional problems and clinical mobility, showing a 100% implant success rate. Marginal bone resorption was significantly higher in the SCRP group than in the BSRP group only at the time of implant prosthesis delivery (P = .043). In all observation periods, periodontal pocket depth was slightly higher in the BSRP group than in the SCRP group, but there was no significant difference (P > .05). The modified plaque index (mPI) scores of both groups were moderate. Higher ratio of a score 2 in modified sulcus bleeding index (mBI) was observed in the BSRP group in the 6- and 12-months observation. CONCLUSION. Within the limitations of this study, the newly developed zirconia ball- and spring-retained implant prosthesis could be considered as an applicable and predictable treatment method along with the existing screw- and cement-retained prosthesis.

  • https://doi.org/10.4047/jap.2023.15.4.202 인용 PDF

A Study on the Effect of Start-up Support Program and Entrepreneurship on Start-up Execution Willingness - For Prospective Start-ups in Jeolla Province - (창업지원프로그램과 창업가정신이 창업실행의지에 미치는 영향에 관한 연구 - 전남지역 예비창업자 대상으로 -)

  • Sun-Lee Joung;Myeong-Gi Jo
    • Journal of the Health Care and Life Science
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    • v.11 no.2
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    • pp.341-349
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    • 2023

  • This study analyzed the impact on entrepreneurship, passion, and start-up execution willingness to start a business for 200 prospective start-ups in Jeollanam-do. As a result of this study, it was found that there was an effect at the statistically significant level (p<.05) in the relationship between the start-up support program and start-up willingness. In the mediating effect analysis of passion for entrepreneurship support programs, it was confirmed that passion played a complete mediating role in the relationship between mentoring and start-up willingness and a partial mediating role in the relationship between the start-up support fund and start-up willingness. In the analysis of the mediating effect of passion on entrepreneurship, it was confirmed that passion played a partial mediating role in the relationship between initiative and start-up execution willingness, and also in the relationship between risk sensitivity and start-up execution willingness. This shows that when proper initiative and risk tolerance are recognized, passion enhances the start-up willingness to run into the start-up market. Based on these results, we suggested theoretical implications and policy support directions to increase the willingness of prospective founders to implement.

  • https://doi.org/10.22961/JHCLS.2023.11.2.341 인용 PDF

Perspectives on Spinal Dysraphism : Past, Present, and Future

  • Pang, Dachling
    • Journal of Korean Neurosurgical Society
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    • v.63 no.3
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    • pp.366-372
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    • 2020

  • This article recounts the author's personal views and recollections of the history, conception of embryogenetic theories, application of intraoperative electrophysiology, and development of prospective treatment recommendations of several important spinal dysraphic malformations, including limited dorsal myeloschisis, dermal sinus tract, retained medullary cord, terminal myelocystocoele, and complex spinal cord lipomas.

  • https://doi.org/10.3340/jkns.2020.0023 인용 PDF KSCI