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全瓷牙就是烤瓷牙?兩者有差別嗎?該怎麼選擇?

Posted By vickong pun     July 11, 2021    

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全瓷牙就是烤瓷牙?兩者有差別嗎?該怎麼選擇?

            

                

                    

                        

                            

                                

                                    

                                        

                                            


                                                烤瓷牙是現在使用較多的牙體修復手段,烤瓷牙根據材料的不同又分為很多種,其中全瓷牙是一種近幾年才開展的一種高科技的鑲牙方法。


                                            


                                                很多人或許會誤以為全瓷牙就是烤瓷牙,二者沒什麼差別。


                                            


                                                但是事實上卻並非如此,今天就帶大家了解全瓷牙和烤瓷牙的差別。

                                                


                                        

                                    

                                

                            

                        

                    

                

            

        

        


            


        

            

                

                    


                        烤瓷牙


                

                

                    

                

                    

            

        

        


            烤瓷牙是將牙齒磨小后取印模,灌注石膏模型,然後在模型上製作一層約0.3-0.5mm厚的金屬基底,再在其外面高溫烤結上四層瓷粉。


        


            


        


            


        


            


        

            

                

                    


                        全瓷牙


                

                

                    

                

                    

            

        

        


            全瓷牙與烤瓷牙類似,將金屬基底換成一層全瓷的透明支撐骨架,然後在它的外冠面烤上一層與天然牙色澤相近的瓷粉,最後粘結在牙齒上。


        


            


        


            


        


            


        


            1、外形透明更像真牙


        


            


        


            這是普通烤瓷牙很難達到的效果,因為普通烤瓷牙金屬內冠的不透明,需用遮蓋金屬基底,影響修復體的透明度,使得烤瓷牙美容後有明顯的虛假感,在牙頸部更有金屬基底造成的“黑線”影響美觀。


        


            


        


            全瓷牙則用良好的透明性與折光性而且高強度的內冠解決了這一缺憾,使牙頸部也能達到良好的美觀效果。


        


            


        


            


        


            烤瓷牙黑線


        


            


        


            2、不會造成磨損


        


            


        


            烤瓷牙的硬度大於牙釉質,可能會造成對頜牙的磨損。而全瓷牙的硬度與牙釉質近似,不會對頜牙造成磨損。


        


            


        


            3、沒有牙齦“黑線”問題


        


            


        


            普通烤瓷牙的金屬內冠在口腔內氧化形成灰色氧化物,散在沉積到牙齦邊緣,引起原因變灰,影響美觀。全瓷牙的全瓷內冠則沒有這種困擾。


        


            


        


            4、維護牙齦健康


        


            


        


            部分烤瓷牙的金屬,對牙齦有較嚴重的刺激,部分人(尤其是女性)對其過敏,造成牙齦腫脹、出血,甚至有患者對貴金屬也過敏;全瓷牙則基本沒有發現敏感病例。


        


            


        


            5、內外冠結合


        


            


        


            金屬和瓷的結合是烤瓷牙修復中比較薄弱的一個環節,這個環節經常可以見到瓷和金屬剝離,露出灰黑的金屬的情況。


        


            


        


            而全瓷牙則是內外冠都是瓷,瓷和瓷的結合不會出現脫落的情況。


        


            


        


            6、全瓷牙對於醫生的技術要求更高,手術費用也稍高。

            


        


            


        


            


    


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