• Title/Summary/Keyword: 치과보철물

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Review on factors affecting the optical properties of dental zirconia (치과용 지르코니아의 광학적 성질에 영향을 미치는 요소에 대한 문헌고찰)

  • Park, Chan-Ho;Ko, Kyung-Ho;Park, Chan-Jin;Cho, Lee-Ra;Huh, Yoon-Hyuk
    • Journal of Dental Rehabilitation and Applied Science
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    • v.37 no.4
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    • pp.177-185
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    • 2021

  • Clinical applications of translucent zirconia as well as traditional zirconia (3 mol% yttria stabilized tetragonal zirconia polycrystal, 3Y-TZP) are increasing. For this reason, studies on factors affecting the optical properties of dental zirconia have been continuously reported. The optical effect of dental zirconia may vary depending on the yttria content, the thickness of the prosthesis, the sintering process, polishing, glazing and cementation in laboratory and clinical procedures. Increasing the yttria concentration can reduce the masking effect. Translucency decreases as the thickness of the restoration increases, but the required thickness may vary depending on the properties of the zirconia block. The high-speed sintering method can shorten the manufacturing time, but in some cases, the translucency of the prosthesis may decrease. In addition, the optical properties can be affected by the surface roughness of zirconia and the polishing process. The use of an appropriate colored cement can help with the masking effect of zirconia and can be useful for color matching for more esthetic results.

  • https://doi.org/10.14368/jdras.2021.37.4.177 인용 PDF KSCI

Rehabilitation of a patient by converting poorly maintained fixed implant prosthesis into implant overdenture: a case report (기존 임플란트 보철물의 불량한 유지관리를 개선하기 위해 임플란트 피개의치로의 상부 보철물 전환 증례)

  • Kim, Yeong-Kyu;Jeong, Chang-Mo;Yun, Mi-Jung;Lee, So-Hyoun;Huh, Jung-Bo
    • The Journal of Korean Academy of Prosthodontics
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    • v.60 no.1
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    • pp.127-134
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    • 2022

  • Among many contributing factors of implant failure, excessive loading and inflammation contribute mainly to increasing implant failure rate. Especially, poor oral hygiene around implants is one of the most common reasons for implant failure. When implant prosthesis fails to function, the clinician should re-diagnose and plan treatment using the remaining implants. Additional implantation may be needed to make a new type of prosthesis or either implant-assisted RPD and implant overdenture treatment may be performed using the remaining implants. In this article, a patient whose fixed implant prosthesis in the maxilla had failed of poor oral hygiene maintenance was reported to be recovered with removable implant overdenture by using remaining implant abutments and a milled bar with additional retentive elements. Through this treatment, the clinical results were satisfactory in terms of esthetics, masticatory function recovery and oral hygiene management.

  • https://doi.org/10.4047/jkap.2022.60.1.127 인용 PDF KSCI