非接觸式單CCD義齒鑲製關鍵邊緣線掃描量測系統

The Noncontact Single CCD Scanning Measurement System For Crucial Margin Curve During Tooth Restorations

王迪藝(Ti-Yi Wang)

指導教授 ： 戴兢志

大同大學/工程學院/機械工程學系所/碩士(2008年)

摘要

近年來，由於市場的需求，牙醫師希望能夠讓牙齒病患在最短時間內完成鑲牙程序，對於義齒的鑲製過程強調快速、精確，因此設計製造義齒的技術已經由傳統的印製齒模或精密脫蠟鑄造法，發展至今的數位化牙齒模型。但是義齒鑲製過程並不需要完整的義齒幾何模型，只需要義齒的關鍵邊緣線。
本研究將開發一套非接觸式單CCD義齒鑲製關鍵邊緣線掃描量測系統，將CCD攝影機以垂直移動的方式，結合修正式相似三角形演算法為理論基礎，量測傳統印製齒模的模穴－印模牙托，建立局部精密的義齒關鍵邊緣線，達到牙醫學領域上所需要的精度0.01mm。修正式相似三角形關係式是根據鏡頭的同軸共焦點特性及針孔成像原理所產生的相似三角形關係式為基礎，目前系統量測精度在0.136mm，因此此系統尚未能到牙醫學領域的精度需求。

關鍵字

義齒關鍵邊緣線 ； 義齒鑲製 ； 數位化牙齒模型 ； 逆向工程

並列摘要

The dentists always desire to finish the processes for tooth restorations as quickly as possible for the sake of the market need. Because the processes for tooth restorations put emphasis upon efficiency and accuracy, the techni-
que of false tooth design/fabrication becomes so far a tendency towards dig-
ital dentistry instead of traditional dental cast. It’s not necessary for complete tooth geometry model during tooth restorations. It only crucial margin curve of tooth.
In this research , will develop noncontact single CCD scanning measurement system for crucial margin curve during tooth restorations. The measurement system based on a modified simulated triangular algorithm includes a vertical moveable CCD camera. The cavity on the traditional dental cast-impression tray is used to measure and model with crucial margin curve of tooth and satisfied demand , reach precision 0.01mm needed in the medical field of tooth. Systematic quantity examines so the precision demand that this system can not reach the medical field of tooth of the precision yet in 0.136mm at present.

並列關鍵字

tooth crucial margin curve ； tooth restorations ； digital dentistry ； Reverse engineering

參考文獻

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