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    烤瓷---牙

     烤瓷牙因其密合度好,颜色效果逼真,已经成为人们治疗和美齿的首选。其美观性、生物相容性是其它修复体无法取代的,是目前为止最为理想的修复体。但是很多朋友在就诊中,面对众多的烤瓷牙材料不知如何选择? 

      要挑选适合自己的烤瓷牙,必须知道烤瓷牙的种类及区别,烤瓷牙一般分为金属烤瓷牙和全瓷牙两大类。全瓷牙分为铸瓷牙和电脑全瓷牙。金属烤瓷牙分为非贵金属、半贵金属和贵金属。它们所用的材料不同,加工工艺也有区别,所达到的效果也会不一样。因此,选择烤瓷牙材料要有针对性。

    类型介绍

            1.镍铬合金烤瓷牙  
            材质:由镍、铬、铍、锰等金属构成。 
            特点:强度高、价格便宜;极个别患者有过敏现象。 

            2.钛合金烤瓷牙  
            材质:钛、镍、铬和钼及其它金属成分。 
            特点:金属强度高,与瓷的结合力较强,色泽好。 

            3.铂钯合金烤瓷牙  
            成份:铂、钯、银和其它金属成分。 
            特点:耐腐蚀,生物相容性好,色泽更加逼真,性能稳定,不易崩瓷。 

            4.金铂合金烤瓷牙  
            材质:金90%、铂9.5%、钯及其它金属成分。 
            特点:金属与瓷的结合更牢固、边缘更密合、色泽更美观;但价格较高。 

            5.全瓷烤瓷牙  
            成份:用特殊的、强度很高的氧化铝或氧化锆陶瓷材料作为内核,在表面再烤瓷做饰面,或者进行染色加工。全瓷修复没有金属烤瓷修复所必需的金属内冠。 
            特点:牙冠的半透明性更好,更加美观,但强度稍差,多用于前牙的美容修复。 

            6.铸瓷烤瓷牙  
            材质:内冠为锂基陶瓷,强度可高达420Mpa。工艺过程是将预制铸压的瓷块在千度高温以上铸压为修复体然后再进行烤瓷或色。 
            特点:在外观上更优越于金属烤瓷牙,色泽最接近真牙,内冠对牙龈没有刺激,对光线的反射更接近天然牙。 

            7.金沉积烤瓷牙  
            材质:含金量99.9%,特殊工艺制成,其精确度普通工艺不可能达到。 
            特点:更好地保护牙齿基桩,冠、桥密合性极好,生物相容性好,烤瓷色泽逼真。  

             http://www.wz16.net/html/sg2008/2008/n11/200811271453066531.html

          烤瓷冠制作过程视频http://fct8.blog.sohu.com/136415889.html

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