- 期刊
Lithium Disilicate Restoration Fabricated with Digital Process - A Case Report
以數位製程製作二矽酸鋰復形－病例報告
摘要
The case report is a 67-year-old female patient who needed the lithium disilicate onlay for her upper right first molar. In this case, the 3-shape oral scaner was used for molding. After uploading the file to the technician, the computer software was used to design the wax pattern of the cavity. The designed wax pattern was produced by 3D printer, and then the test model was printed to confirm its fitness before the final product of lithium disilicate was produced by the pressed method. Furthermore, the differences between traditional and digital processes were discussed, including accuracy, clinical process and technical process. The digital process can check the preparation of teeth immediately after the model is taken, and analyze whether the occlusal space and the thickness of the restorative material are sufficient. However, the current technology only works well with smaller range (short bridge), as for the restoration of the whole jaw, such as the removable denture or a longer dental bridge, traditional impression method still has its advantage. In terms of clinical case collection, compared with stone model, digital file is space-free for long-term archival.
並列摘要
本篇病例報告是一位67歲女性病患，以數位印模方式製作右上第一大臼齒二矽酸鋰嵌體。本案例利用3-Shape口掃機操作臨床取模，上傳至技工端後，以電腦軟體針對牙齒窩洞設計復形體之型態，以3D列印製出設計好之蠟形（wax pattern），再列印出工作模型來確認蠟形吻合後，再以壓鑄（pressed）方式製作出二矽酸鋰（lithium disilicate）成品。進而探討傳統印模製程及數位製程之差異，包含精準度（誤差）、臨床流程、技工端製程差異，數位流程可以在一取完模型立即檢視牙齒製備（prepare）狀況，分析咬合空間及復形體厚度是否足夠，但目前技術仍只建議最多三個單位之牙橋之精準度較好；全顎之修復像是活動假牙或是較長之牙橋傳統印模仍有其優勢。臨床病例收集的部分，數位檔案相較於石膏模型是一個不占空間且較長久之保存。