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乳牙提前脫落了怎麼辦?

Posted By vickong pun     July 14, 2021    

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乳牙提前脫落了怎麼辦?

            

                

                    


                        兒童間隙保持的意義


                

            

        

        

            乳牙的健康對於恆牙的正常萌出有着重要的意義。如果乳牙因為齲壞嚴重或發育異常等原因,未到正常替換時間,而提前脫落或拔除,就稱為乳牙早失。乳牙早失可能使鄰牙的間隙發生變化,影響後續恆牙的萌出。為保持乳牙早失后鄰牙間隙不發生變化而製作的裝置就稱為“間隙保持器”。

        

            

        


            


        

            乳前牙 的平均替換年齡為6-8歲,乳前牙早失后間隙變小的可能性小,因此不需要製作間隙保持器。

        

            乳磨牙 的平均替換年齡為9-11歲,乳磨牙早失后間隙容易變小,因此需要及時製作和佩戴間隙保持器。

        


            


        

            

                

                    


                        兒童間隙保持器的種類的選擇


                

            

        

        


            間隙保持器分為兩大類,固定式和活動式。固定式間隙保持器固定於鄰牙上,平時無需摘戴,主要包括絲圈式間隙保持器、齶弓或舌弓式間隙保持器。活動式保持器是可摘戴的,需要孩子的配合。根據孩子乳牙早失的數量、位置,兒童的年齡、配合情況,不同小朋友適合佩戴的間隙保持器類型不同。兒童牙科醫生會根據具體情況幫助孩子選擇適合的間隙保持器。


        


            


        

            

                

                    

                        

                            

                                

                                    

                                

                                    絲圈式間隙保持器

                            

                        

                    

                

            

        

        


            絲圈式間隙保持器適合單個乳磨牙缺失的情況,使用最廣泛;裝置較小、相對易清潔,小朋友容易耐受。


        


            


        

            

                

                    

                        

                            

                                

                                    

                                

                                    齶弓或舌弓式間隙保持器

                            

                        

                    

                

            

        

        


            齶弓或舌弓式間隙保持器適合多個乳磨牙缺失的情況,固定於雙側后牙上,裝置範圍較大,在上頜稱為齶弓式間隙保持器,在下頜稱為舌弓式間隙保持器。


        


            


        


            


        

            

                

                    

                        

                            

                                

                                    

                                

                                    活動式間隙保持器

                            

                        

                    

                

            

        

        

            活動式間隙保持器適合多顆乳磨牙缺失、患兒咀嚼功能受影響的情況,因為可以在一定程度上恢復咀嚼功能,也叫做“功能式間隙保持器”。活動式保持器每餐后需要取下清潔,需要孩子配合、堅持佩戴,才能起到良好的作用。

        


            


        


            


        


            


        

            

                

                    


                        間隙保持器製作周期


                

            

        

        


            製作、佩戴間隙保持器通常需要就診2次:


        


            第一次就診(拔牙后1~2周):為患兒製取牙齒模型,技師製作保持器。


        


            第二次就診(取模后1-2周):醫生為患兒佩戴保持器。


        

            

                

                    


                        

                        佩戴間隙保持器的注意事項


                

            

        

        

                
                    


                        初戴時患兒可能有異物感,可能影響咀嚼、發音,逐漸適應后可緩解,家長應鼓勵患兒堅持佩戴。


                
                
                    


                        戴間隙保持器后需注意口腔衛生,避免食物殘渣堆積,造成局部黏膜炎症。


                
                
                    


                        避免進食過硬、過黏的食物,以免保持器變形、脫落。


                
                
                    


                        建議3-6個月定期複查,隨着患兒生長發育,保持器可能需要調整、重新製作、或摘除;如遇到保持器變形、脫落等意外情況,請及時就診。


                
            

        


            


        


            


        


            供稿:張芳菲醫師


        


            審核:李靜副主任醫師 梁宇紅教授


    


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