數位製程 Co-Cr合金與牙科陶瓷結合強度之研究

Study on Bonding Strength of Co-Cr Alloy and Dental Porcelain for Digital Process

陳階翰(CHIEH-HAN CHEN)

指導教授 ： 許學全

中臺科技大學/健康科學院/牙體技術暨材料系碩士班/碩士(2019年)

摘要

牙科贗復技術已經走入數位時代，近年來許多研究者積極開發新型鈷鉻合金 (Co-Cr) 以適用於牙科數位製程。本研究探討新開發 CAD / CAM 用 Co-Cr 合金 ( NX ) 的 結構和 性質，同時選用 三款市售 CAD / CAM 用Co-Cr 合金 WP、AM和XS作為對照組。四款 Co-Cr 合金皆利用數位切削製程 ( Computer numerical control, CNC ) 製作樣品。根據 XRD 分析結果顯示燒結前三款 WP、 AM和 NX的 Co-Cr 合金之結構主要為 γγ( fcc )相， XS的 Co-Cr 合金主要是 εε( hcp )相，經燒結強化後皆呈 γγ( fcc )結構，三點彎曲強度測試結果顯示 NX 的 Co-Cr 合金具有較佳之抗彎曲強度 1537 MPa ;硬度測試結果顯示 NX 的 Co-Cr 合金具有高的硬度值380 Hv；金屬燒 附 陶瓷後 NX 的 Co-Cr 合金具有較佳之陶瓷結合強度41.5 MPa。綜合以上結果顯示新開發 CAD / CAM 用的 NX 款 Co-Cr 合金適合應用於牙科數位製程。

關鍵字

鈷鉻合 金 ； 數位製程 ； 抗彎曲強度 ； 結合強度

並列摘要

Dental technology has entered the digital age. In recent years, many researchers have developed new Co-Cr alloys for dental digital process. This study explored the structure and properties of the developed Co-Cr alloy ( NX ) for CAD / CAM applications. Three commercial Co / Cr alloys including WP, AM, and XS were selected as the control group. The four Co-Cr alloys were all fabricated using a computer numerical control ( CNC ). According to the XRD analysis, the structure of three commercial Co-Cr alloys of WP, AM, NX and is mainly γ ( fcc ) phase, and the XS is mainly ε ( hcp ) phase, γ ( fcc ) structure after sintering strengthening. The three-point bending strength test results show that NX has a good bending strength of 1537 MPa. The hardness of the NX has a high value of 380 Hv. The bond strength of the NX Co-Cr alloy and porcelain has a higher value of 41.5 MPa than that of WP, AM, and XS. The above results show that the developed NX Co-Cr alloy is suitable for the dental digital process.

並列關鍵字

Co-Cr alloy ； Digital process ； Bending strength ； Bond strength

參考文獻

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