201113842 六、發明說明： 【發明所屬之技術領域】 本發明是有關於-種定位校正方法及其治具特別是 指一種齒顎實體模型的定位校正方法及其治具。 【先前技術】201113842 VI. Description of the Invention: [Technical Field] The present invention relates to a positioning correction method and a fixture thereof, and more particularly to a positioning correction method for a gingival solid model and a jig thereof. [Prior Art]
現行的牙科教學訓練系統，是在牙科教學用的假人上 直接施作，但此法並沒有辦法將某些操作的流程與結果作 量化的評估，例如鑽頭鑽人齒槽骨的深度、車牙的形狀是 否完善，有無傷害到内部牙趙，以及操作過程中鑽頭施予 牙齒與齒槽㈣力量等，都無㈣科學的方式評估。 為了解決上述問題，美國公開2006/0019228號專利案 揭露-種模擬操作系統，包含下顆的人工牙齒模型，模型 I方安裝㈣壓力計以及扭力感測器；#鑽頭接觸到牙齒 模型時’所述星力計與扭力感測器就可侦測到施加的力量 *，產生訊號傳送至訊號處理裝置，再傳送到螢幕或是利用 聲音來提示施作者；同時也將鑽頭的移動方位記錄以了解 操作方式’而記錄方式有兩種：⑴將該鑽頭安裝標記物， ^吏用攝影機抓取標記物再將座標轉換；（2)利用具有座標 疋位功能的機械桿與該鑽頭連接而記錄其空間位置。 另外，參閱圖1，為美國公告第7457443號專利案所 露的β像導引植牙方法」，是將一呈馬蹄形的定位裝置Η 置於病人下顯的牙齒上，再使用—連接桿12將—校正裝置 U連接於該定位裝置1…該校正裝置13上安裝有多、數 個LED發射 14，同時於一鑽頭15的握持部⑸上也安 201113842 裝有多數個LED發射$ 14，再利用一個3D影像追縱系統 16來追蹤記錄前述LED發射器14所發射的訊號，藉此記 錄鑽頭15的移動方位並提高鑽頭15鑽孔的精確性。 目前牙醫的教學訓練過程中，會先將實體齒顎模型掃 瞄後得到的數位檔案匯入教學軟體令，開始操作之前利用 疋位裝置找出鑽頭與實體齒顎模型的空間位置，接著將兩 者之相對位置回傳至電腦，當程式運算到兩者接觸的時候 就會產生一系列的互動，並將互動的結果反應在螢幕上。 由於牙科教學用之實體齒顎模型為大量射出成型，裝 配的方式是利用螺絲去鎖固每一顆牙齒模型至齒槽模型， 因此牙齒模型不論是製造或是裝配入齒槽模型的過程，皆 會與原始之數位檔案内每顆牙齒的空間座標有所誤差。而 上述前案的設計是以整體實體齒顎模型進行大範圍的座標 校正，雖然都可以定位下顎牙齒的位置，以及記錄鑽頭的 移動方位，但卻無法精確的定位出每一顆牙齒的確切位置 ，也就是說，假若某顆牙齒模型鎖入齒槽模型時不夠緊密 ，那麼當鑽頭與實體齒顎模型接觸時，電腦所偵測到的情 形會有誤差，如此一來電腦模擬與實際的情形不符，而影 響教學訓練的成果。 【發明内容】 因此’本發明之目的’即在提供一種可以提高每一顆 牙齒定位精確度之齒顎實體模型的定位校正方法。 於是’本發明齒顎實體模型的定位校正方法，包含： 一選擇步驟’由多數個齒顎實體模型中選擇一個作為 201113842 基準模型，其餘的齒顎實體模型則作為待校正模型. 一掃描步驟，將該基準模型以_掃描系統掃描後得到 一數位模型，而獲得該數位模型的座標原點 系統偵測該基準模型的座標原點，並將該數位模型的：標 原點與該基準模型的座標原點定義為同一點；The current dental teaching and training system is directly applied to the dummy used in dental teaching, but there is no way to quantitatively evaluate the flow and results of certain operations, such as the depth of the drill bit and the car. Whether the shape of the tooth is perfect, whether there is damage to the internal tooth, and the force of the bit and the tooth groove (4) during the operation, there is no (four) scientific evaluation. In order to solve the above problem, U.S. Patent Publication No. 2006/0019228 discloses a simulated operating system including a lower artificial tooth model, a model I side mounting (four) pressure gauge and a torque sensor; # drill bit when contacting a tooth model The star force meter and the torque sensor can detect the applied force*, send the signal to the signal processing device, then transmit it to the screen or use the sound to prompt the author; also record the moving position of the drill bit to understand There are two ways to record the operation mode: (1) mounting the marker on the drill bit, ^ using the camera to grab the marker and then converting the coordinate; (2) recording it by connecting the drill with a mechanical lever having a coordinate clamp function. Spatial location. In addition, referring to Fig. 1, a method for guiding a dental implant for a β-image disclosed in the U.S. Patent No. 7,475,443 is to place a horseshoe-shaped positioning device on a tooth displayed under a patient, and then use a connecting rod 12 The calibration device U is connected to the positioning device 1... The calibration device 13 is mounted with a plurality of LED emitters 14 and is also mounted on the grip portion (5) of a drill bit 15 with a plurality of LEDs emitting $14. A 3D image tracking system 16 is utilized to track and record the signals emitted by the LED emitters 14, thereby recording the direction of movement of the drill bit 15 and improving the accuracy of the drill bit 15 drilling. At present, during the teaching and training of the dentist, the digital file obtained by scanning the physical gingival model is first imported into the teaching software. Before starting the operation, the position of the drill bit and the physical gingival model is found by using the clamping device, and then two The relative position of the person is passed back to the computer, and when the program is operated to contact the two, a series of interactions are generated and the results of the interaction are reflected on the screen. Since the physical gingival model for dental teaching is a large number of injection molding, the assembly method is to use screws to lock each tooth model to the cogging model, so the tooth model is either manufactured or assembled into the cogging model. There will be an error in the space coordinates of each tooth in the original digital file. The above design is based on the overall solid tooth model for a wide range of coordinate correction, although both can locate the position of the lower jaw and record the movement of the drill bit, but can not accurately locate the exact position of each tooth. That is to say, if a tooth model is not tight enough to lock into the cogging model, then when the drill bit comes into contact with the solid tooth model, there will be errors in the situation detected by the computer, thus the computer simulation and the actual situation. Does not match, and affects the results of teaching and training. SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a positioning correction method for a gingival solid model which can improve the accuracy of positioning of each tooth. Thus, the method for correcting the positioning of the gingival solid model of the present invention comprises: a selection step 'selecting one of the plurality of gingival entity models as the 201113842 reference model, and the remaining gingival solid model as the model to be corrected. The reference model is scanned by the scanning system to obtain a digital model, and the coordinate origin system of the digital model is used to detect the coordinate origin of the reference model, and the original model of the digital model and the reference model are The coordinate origin is defined as the same point;
一製造步驟，利用該數位模型選定—顆目標牙齒並 在該目標牙齒上決定多數個定位點的座標後將該目伊牙 :的數位資料輸出並製造出一個呈中空狀的治具，X再：該 治具上鑽出多數個對應於所述定位點的穿孔； Λ 一置放步驟，將該治具套合於其中一個待校正 對應牙齒上； ' θ 一定位步驟，將一個安裝有多數個定位標記的手持定 位機的鑽頭部’分別伸人該治具的至少三個穿孔中並接觸 於該對應牙齒上’而得到至少三個座標；及 一校正步驟，將該待校正模型的對應牙齒於定位步驟 中所定位得到的座標，與該治具的目標牙齒的座標進行比 對校正，由於該治具是依據基準模型的目標牙齒製作而成 所以比對校正之後，就能將該待校正模型之對應牙齒的 座標，調整至與該基準模型之目標牙齒的座標相同。 本發明之另一目的，即在提供一種供上述齒顎實體模 型的定位校正方法所使用的治具。 本發明之功效在於，藉由上述步驟，可以針對每一顆 牙齒個別進行定位校正，因此可以有效提高定位的精準度 ’進而有效提高牙科教學之教育訓練的成效。 201113842 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 在進行詳細說明前，應注意的是，以下的說明是敘述 疋位杈正方法的步騾，至於治具的製造與使用方法則合併 於上述步驟一併敘明。 參閱圖2,本發明齒顎實體模型的定位校正方法及其治 具之較佳實施例，該定位校正方法包含一選擇步驟2丨、— 掃指步驟22、-製造步驟23、—置放步驟24、— ^位步驟 25，及一校正步驟26。 參閱圖2及圖3’該選擇步驟21是由多數個射出成形 的齒顎實體模型中選擇一個作為基準模型31，其餘的齒顎 實體模型則作為待校正模型35(見圖5)。 該掃描步驟22是以一掃描系統（圖未示）掃描該基準模 型31後得到一數位模型，而獲得該數位模型的座標原點， 再以-貞測該基準模型的座標原點。 咏丞平模型 间隔固設有一個定位板h，战疋位本 32安裝有多數個定位標記33,於本實施例中，所述定位中 :33 : LED發射器，特別要注意的是，由於該定位板3 以該定位系統偵測該定位:2位置疋固定的，因此只， 得該基準模型31的，門疋位標記33就可以菊 與該基準模型的座el間位置’並將該數位模型的座心 的座標原點定義為同—點。於本實施例中， 201113842 該定位系統是—3D影像追m並以該3D影像追 統來追縱抓取所述定位標記33所發射出來的訊號。 ，參_ 2至圖4，該製造步驟23是利用掃描該基準模 型31所得到的數位模型選定—顆目標牙齒，並在該目標牙 齒上决疋多數個定位點的座標後，將該目標牙齒的數位 料輸出並製造出—個呈中空狀的治具34 ,再於該治具34上 鑽出多數個對應於所述定位點的穿孔341。 ' 參閱圖2及圖5,該置放步驟24是將該治具34套合於 其中一個待校正模型35的對應牙齒 351 上。 场足促歹鄉一〜耶—徊女哀有 多數個定位標記33的手持定位機36的鑽頭部361，分別伸 入該治具34的四個穿孔341巾以藉由上述穿孔⑷導引 該鑽頭部361接觸於該對應牙齒351i，而得到四個座標 ’也就是說，藉由上述穿孔341 #引，該鑽頭部361可以 祿取該對齡# 351上定位點之座標。特別要注意的是， 由於該手狀位機36上安裝有^位標記33，因此該定位系 貞測該手持定位機36之定位標記33，就可以依據該 、又位機36的位置’得到該對應牙齒351上定位點的座 標。 &本實知例中，是以該鑽頭部361伸入該治具 的四個穿孔341為例說明，當然也可以視實際操作情形 :選擇不同數目的穿孔341 ’因此不應以本實施例的 限。 參閱圖2、6 於本實施例令，該定位步驟25是於 201113842 套設有該治具34的對應牙齒35i上以該 5)伸入四個穿礼341上 見圖 穿孔41 ，也就是該對應牙齒351上的定位點 52 53、54 ’並分別針對所述定位點51、、μ、μ 進行瞬間掏取複數次座標的作業，以本實施例^， 頭部361是分別於每—個定位點瞬間摘取一百次的座標值 〇 參閱圖6至8’該校正步驟％(見圖2)是該待校正模型 35於定位㈣25中，將針對所述定位點5卜52、53、、54 所瞬間擷取到之座標群進行距離比對，以形成—個具有誤 差半徑的校正圓形4’而落於該校正圓形4之外的座桿，即 屬於誤差過大0刪除’制未賴的座標進衫位平移 矩陣蚊位旋轉矩陣料算後，與該治具34的 基準模型3!之目標牙齒的座標)進行比對校正。，、（就疋 以下敘述該校正步驟26的詳細過程： (1)座標的篩選： a. 每個定位點的-個座標對其他瞬間錄的列個座標 進行距離比對，形成一個誤差半徑。 b. 重複以上步㈣.個點之距離皆小於誤差半徑。 c. 計算η個點的平均中心位置（ex，ey，ez)。 二 d. 四個定位點的座標為㈣，―，如 2 ez2)、（ex3, ey3, ez3)、（ex4, ey4, ez4)。 ，， (2)計算定位旋轉矩陣： a·求出理想3D模型中4個定位點的旋轉中心㈦ icy，icz) ° 201113842 b. 求出4個定位點座標之平均位置的旋轉中心（π、 ecy， ecz)。 c·求出4個定位點座標與旋轉中心的旋轉差距角度， 再求取出平均旋轉角。 (3) 計算定位平移矩陣： a ·依序將4個3 D模型理想定位點’與量_的平均位 置進行位移程度的比對。 b·先從誤差半徑最小的量測點群開始，取得以它為基 準的位移矩陣，並且計算其總差距值。 土 c. 總差距值料算方式為4個量咖平均值 模型差距的平方和。 、心 (4) 決定校正矩陣： 比對4個總差距值，以總差距值最小的一組旋轉角與 位移值，作為定位校正的修正矩陣（Transf〇__心叫 (5) 調整座標： 最後將定位校正的修正矩陣套用至該手持定 基準模型31進行座標轉換。 ^ 由於該治具34是依據基準模型31的目標牙齒製作而 成，所以比對校正之後，就能將該待校正模型3 之目標 齒351的座標，調整至與該治具34及基準模型3/應牙 牙齒的座標相同。 而上述校正步驟26的實際演算結果如下頁所示： 201113842 (1)理想3D模型定位位置： 定位點編號 3D模型位置X 3D模型位置Y 3D模型位置Z 定位點51 -28.3204 1.5055 1 1.3351 定位點52 -24.9146 -3.3567 13.1443 定位點53 -25.798 1.2583 13.4653 定位點5 4 -21.464899 -1.8888 1 1.5579 (2)掃描系統偵測的位置： 籲a manufacturing step of selecting a target tooth by using the digital model and determining a coordinate of a plurality of anchor points on the target tooth, and outputting the digital data of the mesh Ie: and forming a hollow jig, X again : a plurality of perforations corresponding to the positioning points are drilled on the jig; Λ a placing step, the jig is fitted to one of the corresponding teeth to be corrected; ' θ a positioning step, one of which is installed with a majority a positioning mark of the hand positioning machine, the drill portion 'extending into at least three perforations of the jig and contacting the corresponding tooth to obtain at least three coordinates; and a correcting step, corresponding to the model to be corrected The coordinate obtained by the tooth in the positioning step is compared with the coordinate of the target tooth of the jig, and since the jig is made according to the target tooth of the reference model, the alignment can be corrected The coordinates of the corresponding teeth of the calibration model are adjusted to be the same as the coordinates of the target teeth of the reference model. Another object of the present invention is to provide a jig for use in a positioning correction method for the above-described gingival solid model. The effect of the invention is that, by the above steps, the positioning correction can be performed individually for each tooth, so that the accuracy of the positioning can be effectively improved, thereby effectively improving the effectiveness of the educational training of the dental teaching. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the detailed description, it should be noted that the following description is a step of describing the method of aligning the aligning method, and the method of manufacturing and using the jig is combined with the above steps. Referring to FIG. 2, a preferred embodiment of the method for correcting the positioning of the gingival solid model of the present invention and the fixture thereof comprises a selection step 2, a sweeping step 22, a manufacturing step 23, a placing step 24, - bit step 25, and a correction step 26. Referring to Figures 2 and 3', the selection step 21 is to select one of the plurality of injection-molded gingival solid models as the reference model 31, and the remaining gingival solid model as the model to be corrected 35 (see Fig. 5). The scanning step 22 is to scan a reference model 31 by a scanning system (not shown) to obtain a digital model, and obtain the coordinate origin of the digital model, and then measure the coordinate origin of the reference model. The rafting model is provided with a positioning plate h, and the smashing position 32 is mounted with a plurality of positioning marks 33. In the embodiment, the positioning: 33: LED emitters, in particular, due to The positioning plate 3 detects the positioning by the positioning system: the position 2 is fixed, so that only the threshold mark 33 of the reference model 31 can be the position between the chrysanthemum and the seat el of the reference model and The coordinate origin of the seat of the digital model is defined as the same point. In this embodiment, the 201113842 positioning system is a 3D image chase m and is tracked by the 3D image to capture the signal emitted by the positioning mark 33. Referring to FIG. 2 to FIG. 4, the manufacturing step 23 is to select a target tooth by using a digital model obtained by scanning the reference model 31, and after determining the coordinates of the plurality of positioning points on the target tooth, the target tooth is The digital material outputs and manufactures a hollow fixture 34, and a plurality of perforations 341 corresponding to the positioning points are drilled on the fixture 34. Referring to Figures 2 and 5, the placement step 24 is to fit the jig 34 onto a corresponding tooth 351 of one of the models 35 to be corrected. The field of the 歹 歹 〜 耶 耶 耶 耶 徊 徊 有 有 有 多数 多数 多数 定位 定位 定位 定位 定位 钻头 钻头 钻头 钻头 钻头 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 361 The drill portion 361 is in contact with the corresponding tooth 351i, and four coordinates are obtained. That is, the drill portion 361 can take the coordinates of the positioning point on the pair #351 by the above-mentioned perforation 341#. In particular, since the position mark 33 is mounted on the hand position machine 36, the positioning system measures the positioning mark 33 of the hand positioner 36, and can be obtained according to the position of the positioner 36. This corresponds to the coordinates of the anchor point on the tooth 351. In the present embodiment, the four perforations 341 in which the drill portion 361 extends into the jig are taken as an example. Of course, depending on the actual operation, a different number of perforations 341 may be selected. Therefore, the present embodiment should not be used. Limit. Referring to FIG. 2 and FIG. 6 , in the embodiment, the positioning step 25 is performed on the corresponding tooth 35i on which the jig 34 is placed on the 201113842, and the 5) is inserted into the four rituals 341 to see the through hole 41, that is, the Corresponding to the positioning points 52 53 , 54 ′ on the teeth 351 and performing the operations of capturing the plurality of coordinates instantaneously for the positioning points 51 , μ , μ respectively , in the embodiment ^, the head 361 is respectively for each The positioning point is instantaneously extracted one hundred times of the coordinate value. Referring to Figures 6 to 8', the correction step % (see Fig. 2) is the to-be-corrected model 35 in the positioning (4) 25, which will be targeted to the positioning point 5, 52, 53, And 54 coordinate groups that are instantaneously captured are compared to form a coordinate circle having a correction radius 4' with an error radius and falling outside the correction circle 4, that is, the error is too large. After the calculation of the unresolved coordinate in the translational matrix mosquito bit rotation matrix, the alignment correction is performed with the coordinates of the target tooth of the reference model 3! of the jig 34. , (The following is a detailed description of the detailed process of the calibration step 26: (1) Coordinates screening: a. Each coordinate point of the positioning point is compared with other instantaneously recorded coordinate coordinates to form an error radius. b. Repeat the above steps (4). The distance between the points is smaller than the error radius. c. Calculate the average center position of the η points (ex, ey, ez). 2 d. The coordinates of the four positioning points are (4), ―, such as 2 Ez2), (ex3, ey3, ez3), (ex4, ey4, ez4). (2) Calculate the positioning rotation matrix: a. Find the rotation center of the four positioning points in the ideal 3D model (7) icy, icz) ° 201113842 b. Find the rotation center of the average position of the coordinates of the four positioning points (π, Ecy, ecz). c. Find the angle of rotation between the coordinates of the four anchor points and the center of rotation, and then find the average angle of rotation. (3) Calculate the positioning translation matrix: a. Align the displacement positions of the ideal positioning points of the four 3D models with the average position of the quantity_. b. Start with the measurement point group with the smallest error radius, obtain the displacement matrix based on it, and calculate the total difference value. Soil c. The total gap value is calculated as the sum of the squares of the model gaps of the four measures. (4) Determine the correction matrix: Compare the four total gap values, and set the rotation angle and displacement value with the smallest total gap value as the correction matrix for the positioning correction (Transf〇__心叫(5) Adjustment coordinates: Finally, the correction correction correction matrix is applied to the handheld fixed reference model 31 for coordinate conversion. ^ Since the fixture 34 is made according to the target tooth of the reference model 31, the calibration model can be corrected after the alignment correction. The coordinates of the target tooth 351 of 3 are adjusted to be the same as the coordinates of the jig 34 and the reference model 3/dental teeth. The actual calculation result of the above-mentioned correction step 26 is shown on the following page: 201113842 (1) Ideal 3D model positioning position : Positioning point number 3D model position X 3D model position Y 3D model position Z Positioning point 51 -28.3204 1.5055 1 1.3351 Positioning point 52 -24.9146 -3.3567 13.1443 Positioning point 53 -25.798 1.2583 13.4653 Positioning point 5 4 -21.464899 -1.8888 1 1.5579 ( 2) Location detected by the scanning system:
定位點編號 取樣位置X 取樣位置Y 取樣位置Z 定位點5 1 -27.384945 1.68968 11.138947 定位點52 -24.790268 -3.244476 9.652393 定位點53 -26.342291 1.567141 9.906459 定位點5 4 -22.467953 -2.223948 8.680529 (3)套用修正矩陣後的位置： 定位點編號 修正位置X 修正位置Y 修正位置Z 定位點51 -29.694925 1.228448 12.45784 定位點5 2 -24.828644 -3.238992 12.352094 定位點53 -25.85622 1.383572 12.555948 定位點54 -22.117123 -2.142764 11.356303 10 201113842 (4)取樣資料與3D模型的誤差： 定位點編號 取樣X誤差 取樣Y誤差 取樣Z誤差 總誤差距離 定位點51 0.935455 0.18414 -0.196153 0.973375362 定位點52 0.124332 0.112224 -3.491907 3.495921505 定位點53 -0.544291 0.308841 -3.558841 3.613444993 定位點54 -1.003054 -0.335148 -2.877371 3.065567709 (5)修正資料與3D模型的誤差： 定位點編號 取樣X誤差 取樣Y誤差 取樣Z誤差 總誤差距離 定位點51 -1.374525 -0.277052 1.12274 1.796280015 定位點52 0.085956 0.117708 -0.792206 0.805502299 定位點53 -0.05822 0.125272 -0.909352 0.919784596 定位點54 -0.652224 -0.253964 -0.201597 0.72837848 藉由上述設計，本發明齒顎實體模型的定位校正方法 及其治具於實際使用時具有以下所述的優點： (1)定位精準： 只要選定基準模型31中的任一顆牙齒作成治具34 ，再套合於其他待校正模型35的對應牙齒上，就可以 將待校正模型35之對應牙齒的座標調整至與該治具 34(也就是基準模型31之目標牙齒）的座標相同，如此 一來，就可以分別將待校正模型35之每一顆對應牙齒 的座標，調整至與基準模型31之每一顆目標牙齒的座 201113842 標相同’而達到定位精準的目的 (2)有效提高教學訓練的成效· —«發明精準的定位方式，使得電腦可以精確 定位出待校正模型35中每一顆牙齒的位置，以及記錄 該手持疋位機36的移動位置，因此可以精確的定位並 記錄教學訓練過财學生操作时法與技巧，用以作 為指導者評分與指導的依據，進而有效提高教學訓練 的成效。 λ綜上所述，本發明齒顎實體模型的定位校正方法及其 冶具，藉由該治具34的形成以及上述定位校正的步驟可 ㈣對每—顆牙齒個別進行定位校正，因此可以有效提高 定位的精準度，進而有效提高牙醫教學之教育訓練的成效 ’故確實能達成本發明之目的。 准X上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明中請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋一立體圖，說明為美國公告第7457443號專利 案所揭露的「影像導引植牙方法」； 圖2是一流程圖，說明本發明齒顎實體模型的定位校 正方法及其治具的較佳實施例，其定位校正的流程步驟； 圖3是一立體圖，說明該較佳實施例中手持操作機 上之定位標記，與間隔固設於基準模型上之定位板的態樣 12 201113842 圖4是一立體圖，說明該較佳實施例中， 的態樣，且兮，、△且#上 工狀治具 且这〜具形成有多數個穿孔； 圖5是一立體示意圖，說明該較佳實施例中， 作機進行定位的態樣； 、操 圖6是一俯視圖，說明該較佳實施例中，是隨機選擇 、冶具頂面的三個穿孔作為定位點； 圖7是一側視圖，說明該較佳實施例中，是隨機選擇 治具圍繞面的一個穿孔作為定位點；及 圖8是一示意圖，說明該較佳實施例中，各定位點的 座標分布情形。Positioning point number sampling position X sampling position Y sampling position Z positioning point 5 1 -27.384945 1.68968 11.138947 positioning point 52 -24.790268 -3.244476 9.652393 positioning point 53 -26.342291 1.567141 9.906459 positioning point 5 4 -22.467953 -2.223948 8.680529 (3) Apply correction matrix Rear position: Positioning point number Correction position X Correction position Y Correction position Z Positioning point 51 -29.694925 1.228448 12.45784 Positioning point 5 2 -24.828644 -3.238992 12.352094 Positioning point 53 -25.85622 1.383572 12.555948 Positioning point 54 -22.117123 -2.142764 11.356303 10 201113842 ( 4) Error between sampling data and 3D model: Positioning point number sampling X error sampling Y error sampling Z error Total error distance positioning point 51 0.935455 0.18414 -0.196153 0.973375362 Positioning point 52 0.124332 0.112224 -3.491907 3.495921505 Positioning point 53 -0.544291 0.308841 -3.558841 3.613444993 Positioning point 54 -1.003054 -0.335148 -2.877371 3.065567709 (5) Correction of error between data and 3D model: Positioning point number sampling X error sampling Y error sampling Z error Total error distance positioning point 51 -1.374525 -0.277052 1.12274 1.796280 015 Positioning point 52 0.085956 0.117708 -0.792206 0.805502299 Positioning point 53 -0.05822 0.125272 -0.909352 0.919784596 Positioning point 54 -0.652224 -0.253964 -0.201597 0.72837848 With the above design, the positioning correction method of the gingival solid model of the present invention and its fixture are actually used. It has the following advantages: (1) Accurate positioning: As long as any one of the teeth in the reference model 31 is selected as the jig 34 and fits over the corresponding teeth of the other models to be corrected 35, the model to be corrected can be The coordinates of the corresponding teeth of 35 are adjusted to be the same as the coordinates of the fixture 34 (that is, the target tooth of the reference model 31), so that the coordinates of each tooth corresponding to the model to be corrected 35 can be adjusted to It is the same as the target 201113842 of each target tooth of the reference model 31', and achieves the purpose of positioning accuracy (2) effectively improving the effectiveness of teaching and training. - «Invented accurate positioning method, enabling the computer to accurately locate the model to be corrected 35 The position of each tooth in the middle, and the position of the movement of the hand-held positioner 36, so that it can be accurately Bit recording and teaching students trained during the fiscal operation of law and skills to score basis as a mentor and guide, and thus improve the effectiveness of teaching and training. λ In summary, the method for correcting the positioning of the gingival solid model of the present invention and the tooling thereof can be used for the positioning correction of each tooth by the formation of the jig 34 and the above-mentioned positioning correction step, thereby effectively improving The accuracy of the positioning, and thus the effectiveness of the educational training of the dentistry teaching, can indeed achieve the purpose of the present invention. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent change of the patent scope and the description of the invention in the present invention is Modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the "image-guided dental implant method" disclosed in U.S. Patent No. 7,475,443; FIG. 2 is a flow chart illustrating the positioning correction of the gingival solid model of the present invention. The preferred embodiment of the method and the fixture thereof, the process steps of the positioning correction; FIG. 3 is a perspective view showing the positioning mark on the hand-held operating machine in the preferred embodiment, and the positioning plate fixed on the reference model at intervals Figure 12 is a perspective view illustrating the aspect of the preferred embodiment, and the 兮, △, and #上形 fixtures and the plurality of perforations are formed; Figure 5 is a perspective view FIG. 6 is a top view of the preferred embodiment; FIG. 6 is a top view showing the three perforations of the top surface of the tool as a positioning point; 7 is a side view showing that in the preferred embodiment, a perforation around the surface of the jig is randomly selected as an anchor point; and FIG. 8 is a schematic diagram showing the coordinate distribution of each positioning point in the preferred embodiment. .
f~· 13 201113842 【主要元件符號說明】 21 選擇步驟 34 治具 22 掃描步驟 341 穿孔 23 製造步驟 35 待校正模型 24 置放步驟 351 對應牙齒 25 定位步驟 36 手持定位機 26 校正步驟 361 鑽頭部 31 基準模型 4 校正圓形 32 定位板 51-54 定位點 33 定位標記 14f~· 13 201113842 [Description of main component symbols] 21 Selection step 34 Fixture 22 Scanning step 341 Perforation 23 Manufacturing step 35 Model to be corrected 24 Placement step 351 Corresponding teeth 25 Positioning step 36 Hand-held positioning machine 26 Correction step 361 Drill portion 31 Reference model 4 Correction circle 32 Positioning plate 51-54 Positioning point 33 Positioning mark 14