牙科失透層與鎳鉻鉬合金界面性質研究

The Study of Interface Characteristics Between the Opaque Porcelain and Ni-Cr-Mo-alloy

莊文斌(Wen-Bin Zhuang)

指導教授 ： 楊永欽

國立臺北科技大學/工程學院/材料科學與工程研究所/碩士(2008年)

https://doi.org/10.6841/NTUT.2008.00552

摘要

本研究主要是以鎳鉻鉬生醫金屬與牙科陶瓷燒結成之牙科復形體，針對基材表面處理、燒結溫度對鍵結強度之變化進行討論，藉由改變鎳鉻金屬之表面粗糙度不同，探討機械咬合力對於介面鍵結強度之影響，同時觀察氧化層之增加所提供之化學性黏附力對鍵結強度之作用。實驗結果顯示，隨著牙科陶瓷之燒結溫度增加，玻璃化程度與鍵結強度同時呈現提升之表現。當金屬基材經由氧化處理時，此鍵結強度較經由吹砂處理之試片低，表面粗糙度Ra 值在2.01~3.7 μm之間都具有良好的機械咬合效果。綜觀各類材料試片，在考量牙科陶瓷之燒結溫度及基材表面處理等條件下，975℃~1040℃燒結溫度並經吹砂處理之試片其性質表現較佳。

關鍵字

牙科瓷 ； 氧化性質 ； 鍵結強度

並列摘要

Porcelain was fired according to the manufacture's instructions at 890℃, 975℃,and 1040℃ under vacuum condition. The bond strength testing was performed with a 3-point bending test. Specimens were examined of the metal-ceramic interface and micro- structure by SEM. The experimental result finds that from the cross-section of specimens demonstrated that the fracture was located most often between metal and oxide layer. The mechanical interlocking is most major source in bonding strength. Because of larger roughness produced by sandblast, bonding strength of the airborne-particle abrasion in 4kg/cm2 is stronger than 2 kg/cm2.

並列關鍵字

Bonding strength ； Porcelain ； Adhesive

參考文獻

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