口腔為人們重要的器官之一，而在目前大量精緻食物的環境下，有大多數的人 邁入老年生活時，需要做植牙以及假牙之手術，根據 106 年臺南市衛生局調查結 果發現目前 65 歲以上老年人全口缺牙比例為 16.25%，此數據將會因為台灣老人化 趨勢日益漸增比例也會繼續提升。而在日益提升的需求上而如何挑選適合的牙齒 則是牙醫師一大技術及經驗，但整題流程需要花費不少時間與成本。但因為口腔為 較特別的器官，其潮濕、狹窄與陰暗讓較大的數位儀器無法放入。因此本研究希望 利用立體視覺在口外拍攝為基礎建立全口數位掃描器，並使用牙醫師正畸反射鏡 作為媒介拍攝，預期快速地重建病人的全口牙床，再由醫生快速判斷適合的牙齒做 整體的列印或製造，較以往做全口牙床重建模型，可大量節省時間以及患者做翻模 的不舒適性。
經本研究分析掃描結果整體涵蓋率約為牙床表面的 90%，整體精確度平均誤 差在 0.4mm 以下，及比較數位與傳統假牙製作流程時間。在臨床上的掃描口腔至 假牙重建及列印到做試戴調整，確認患者舒適整體流程約為一天，比起傳統石膏模 型假牙從製作到完成最少花費 10 天以上的時間，整體而言加速了約 10 倍以上速 度。

The mouth has been one of the important organs for people all the time. Currently, people live in a good condition with so many choices for food; therefore, most people who are going to enter the elder life need to undergo an operation for dental implant or denture. According to the sample survey conducted by Tainan City Government Health Bureau, the elderly people who are aged over 65 years old without any teeth account for 16.25%; moreover, this problem will increase as the trend of aging population. Thus, how to choose a suitable tooth for patients is based on the doctor’s experience and expertise; however, the whole process needs a lot of time and costs.
Since the arch of human being is mostly moist, narrow, and dark, bulky 3D digital devices can’t be used. In this study, we develop a digital scanning device based on stereoscopy and reflector to take 3D pictures. By this way, we are able to acquire 3D information of patient’s full arch efficiently. Therefore, if we further integrate digital scanning with the 3D printing, we can reconstruct full-arch denture quickly. And it will save lots of time and ease the discomfort for patients.
According to the result, the coverage of reconstructed 3D for the whole arch is around 90%, and the accurate validation error is as small as 0.4mm in average. In order to verify whether our system is useful, we examine over and over again. As a result, we find out that it is approximately taking one day including scanning operation, digital denture reconstruction, printing dentures and adjustment of patients’ comfort. Compared with the traditional plaster cast dentures, which takes more than ten days to accomplish, digital full arch reconstruction is ten times faster than the traditional one.

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