TWI343799B - Method of developing personal occlusion surface and its applications in denture fabrication - Google Patents

Method of developing personal occlusion surface and its applications in denture fabrication Download PDF

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TWI343799B
TWI343799B TW096142655A TW96142655A TWI343799B TW I343799 B TWI343799 B TW I343799B TW 096142655 A TW096142655 A TW 096142655A TW 96142655 A TW96142655 A TW 96142655A TW I343799 B TWI343799 B TW I343799B
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Taiwan
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establishing
mark
marker
tooth
dental
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TW096142655A
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Chinese (zh)
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TW200920322A (en
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Jing Jing Fang
Ching Hong Chung
Tai Hong Kuo
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Univ Nat Cheng Kung
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00Dental auxiliary appliances
    • A61C19/04Measuring instruments specially adapted for dentistry
    • A61C19/045Measuring instruments specially adapted for dentistry for recording mandibular movement, e.g. face bows

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

1343799 九、發明說明: 【發明所屬之技術領域】 一種以牙齒咬 本發明係一種模擬牙冠建立方法,尤指 合曲面模擬三維義齒模型方法。 【先前技術】 人工植牙(d_a丨丨mplant)是以義齒與人工牙根取代因 疾病或外傷所失去的單顆或多顆牙,假牙製作時除了要考 鲁慮.垂直深度與咬合平面的建立外,還得考慮不同咬合力大 小的承受關係,目標是所有牙齒在正中咬合接觸時是平衡 的(cross arch balance),而且使得咬合作用力的方向盡可 能落在上下顎的受力區,因此這些因素均與假牙的製作、 牙冠造型與齒阜(dental cuspid)角度大小有著密不可分的 關係。 事實上,當前做法上以徒手排列假牙的方式,是很難 達到對柄或平衡協調的功能,而傳統上牙醫師是透過咬合 鬌器與曲面排牙板(Set_uptemplates)等儀器,依據假牙提供 廠商所訂定好的經驗模組,才能順利地排列出維持平衡的 代償線一咬合面牙尖連線(curve of spee)與臼齒區牙尖連 線(curve of wilson) ° 在找出最佳的排牙位置後,牙醫師須根據全景χ光照 影的二維影像得知顎骨寬度與高度,並憑經驗臆測人工牙 根植入後與鼻竇和下齒槽神經管'血管與植體彼此間之空 間相對位置些解剖學上的限制,造成了決定植體植入 位置的困難,而這種依靠二維影像聡測空間的作法也降低 1343799 了手術中的安全性。1343799 IX. Description of the invention: [Technical field to which the invention pertains] A dental bite The present invention is a method for establishing a simulated crown, especially a method for simulating a three-dimensional denture model. [Prior Art] Artificial implants (d_a丨丨mplant) replace single or multiple teeth lost by disease or trauma with dentures and artificial roots. In addition to the care of the dentures, vertical depth and occlusal planes are established. In addition, it is necessary to consider the bearing relationship of different bite forces. The goal is that all teeth are cross arch balance in the middle of the occlusal contact, and the direction of the bite force is as far as possible in the force zone of the upper and lower jaws. These factors are inextricably linked to the production of dentures, the shape of the crown and the size of the dental cuspid. In fact, in the current practice, the method of arranging the dentures by hand is difficult to achieve the function of the handle or balance coordination. Traditionally, the dentist has provided the manufacturer according to the dentures through the instruments such as the occlusion device and the surface plate (Set_uptemplates). The set of experience modules can be smoothly arranged to maintain a balanced compensatory line. A curve of spee and a curve of wilson °. Find the best row. After the position of the tooth, the dentist must know the width and height of the humerus according to the two-dimensional image of the panoramic illuminating light, and empirically measure the space between the vascular nerve and the sinus and the inferior alveolar nerve tube after the artificial root is implanted. The anatomical limitations of the location create difficulties in determining the location of the implant, and this method of relying on two-dimensional imaging to detect space also reduces the safety of 1343799 during surgery.

目耵已有輔助植牙軟體被發展出來,輔助醫生在術前 的判斷其中就其提供影像來看,概可份為二維及三維影 像軟體。例如DenX Ltd開發的丨G丨軟體,即使用平面影 像輔助上下顎缺牙的補牙手術,因此術中須由醫生目測截 面影像來判斷植體在齒槽骨内截面的位置,手動調整植體 的位置與方位;至於Simp丨ant4植牙軟體則可在軟體中規 劃植牙方位,在重建的三維影像上提供距離量測工具,以 進v產生手術用鑽孔模板;又,NobelGuide TM軟體提 仪植奴位置與沬度的模擬,並製作手術模板,將植牙複雜 的過程縮短成所謂的—次性治療(in just 〇ne visjt)。 然而,上述軟體並無法明確提供牙醫師可能的植入面 與植入點資訊,仍須由醫生自行判斷出植入面與植入點 後,再行決定植體位置、角i、深度;是以,該等軟體無 法真正地自動建立植牙可用的參考方位。 目前牙醫生在植牙前會以曲面排牙板(set_up templates),排列出兩條完美的代償線,使得牙齒縱轴自 然與牙脊垂直,達到咬合平衡後取得患者本身之牙齒咬合 做為植牙手術之依據。然而,目前曲面排牙板具有許 多&不同的牙冠角度的規格,依照學理、種族而有著不同的 攻汁’但仍非屬個人化產品,又目前市面上曲面排牙板大 都為歐美規格,僅由醫師根據經驗判斷決定適合患者尺寸 的平衡咬牙排列方式用上確實有其不便之處;*特別是 對於單顆缺牙或多顆缺牙的病患來說,由於大部分是健康 的牙齒,故不適用規格化的曲面排牙板來替代已經存&的 丄州799 交。面,需依循患者原先的咬合面 是較佳的作法。 義齒牙冠的選用才 l赞明内容】 本發明Μ目的係、提供一種以牙齒咬 方法,模擬出患者缺牙處之假牙及其立 ,錢牙对 術前及術中植牙可用的參考方 :’提供醫生 ,、κ 、各、 扠呵植牙手術品質。 奴達上述目的所使用的主要技 模擬牙冠方法包含有: ^牙齒咬合曲面 翻製士者牙模,於牙模的上,下顯分別加入標記物; “將固疋有標記物之牙才莫進行電腦斷層料,以取 杈網格身料以及上’下顎標記物於電腦斷層影像之轉換矩 陣;其中該牙模網格資料係依照選擇切削區域及投影範圍 分成mxn複數網格; 拍攝患者口内固定追蹤板的咬合動作,以取得上/下 顎追蹤板之轉換矩陣,及其與標記物之相對關係矩陣; 以上/下顆追蹤板之轉換矩陣及相對關係矩陣,計算 出下禎標記物之於上顎標記之相對關係,或下顎標記物之 於上顎標記之相對關係; 再計算牙模上/下顎標記物於電腦斷層影像之轉換矩 陣,與下顎彳示§己物之於上顎標記之相對關係,或下顯標記 物之於上顆標記之相對關係,以獲得下顎網格點之於上顆 的動態位置’或下顎網格點之於上顎的動態位置; 取動態位置之投影位置,計算出其深度量後,再代入 於其對應網格位置函數中; 6 重覆第二至六步驟,以完整取得所有切削區域的網格 函數,直到預設重覆次數達到為止; 求各周格函數的最大值,即代表取得格網格最深切削 點;及 再將各網格之最深b乱丨# $刀肖】點進竹網格化計算,建構出一 牙齒咬合曲面。 又本發月另目的係藉由上述牙齒咬合曲面建議立體 義齒模型,即於上述步驟後進一步包含有: 依據患者鄰近牙齒的齒型與高度,配合標準假牙經電 腦斷層掃描後所得到之重建模型,或是利用鏡射技術所得 到之映射模型’建立該患者的牙齒網格模型;及 由於牙齒網格模切句冬古$ + Α 、皂匕3有舌側與頰側面與前後側面的 :卜^故再與將與牙齒咬合曲面進行差集,建立-完整立 ,義齒。上述模擬牙冠方法係主要藉由患者重覆複數次(至 幻的心爵運動,達到建立數位化紀錄咬合運動軌 跡,而這期間上下顆的㈣就如同機械工薇中“刀且”斑“工 件”的切削運動,因此若 ’、 顎 ㈣牙為例,即必須計算出上 、1心牙訄表面,此時即將下顎牙模型視為“刀具,,, 轨跡視為切削路徑,方便計算之並可在空間中雕 :: 父合曲面作為上顯缺牙之牙冠表φ,並可進—步配a 二=齒網格模型’建立出符合該位患者之義齒模型·是 i師可透㉟本發明模擬出纟的 病患實際的咬合過程、牙齒排列狀況與:;:二了: 度’提供數位化的詳實紀錄,藉由咬合:現:木 輔h 4 ^ 叫97至現與輸出, ’、疋牙齒的排列雨度、牙冠造型、及牙阜⑽响丨It has been shown that the assisted implant software has been developed, and the assistant doctor can provide two-dimensional and three-dimensional image software in the pre-operative judgment. For example, the 丨G丨 software developed by DenX Ltd uses the planar image to assist the filling operation of the upper and lower sacral missing teeth. Therefore, the doctor must visually check the cross-sectional image to determine the position of the implant in the alveolar bone and manually adjust the position of the implant. As for the Simp丨ant4 implant software, the implant orientation can be planned in the software, and the distance measurement tool can be provided on the reconstructed 3D image to generate the surgical drill template. In addition, the NobelGuideTM soft instrument is implanted. Simulation of slave position and mobility, and the creation of surgical templates to shorten the complex process of implants into so-called 〇ne visjt. However, the above software cannot clearly provide information on the possible implant surface and implantation point of the dentist. It is still necessary for the doctor to determine the implant position and the implantation point, and then determine the position, angle i, and depth of the implant; Therefore, the software cannot automatically establish the reference orientation available for the implant. At present, the dentist will arrange two perfect compensation lines with the set_up templates before the implants, so that the vertical axis of the teeth is naturally perpendicular to the ridge, and the occlusal balance is obtained to obtain the patient's own tooth occlusion. The basis of dental surgery. However, at present, the curved surface plate has many specifications of different crown angles, and has different tapping juice according to the theory and the race. However, it is still not a personalized product, and currently the surface of the curved plate is mostly in Europe and America. It is really inconvenient for the physician to judge the balance of the teeth according to the experience and judge the size of the patient. * Especially for a single tooth or a plurality of missing teeth, most of them are healthy. Teeth, it is not suitable for the normalized surface of the tooth plate to replace the existing amp 799. It is better to follow the patient's original occlusal surface. The selection of the denture crown is only for the purpose of the present invention. The purpose of the present invention is to provide a reference method for simulating the denture of the patient's missing tooth and the standing of the dental prosthesis for the preoperative and intraoperative implants. 'Providing doctors, κ, each, fork and implant quality. The main technique used by Nuda for the above purposes is to include: ^Tooth occlusal curved stalker's dental mold, on the upper and lower sides of the dental mold, the marker is added separately; Mo computer fault material is used to take the mesh body and the transformation matrix of the upper 'lower jaw marker on the computer tomographic image; the dental mold grid data is divided into mxn complex grid according to the selected cutting area and projection range; The occlusion action of the tracking board is fixed in order to obtain the transformation matrix of the upper/lower 颚 tracking board and its relative relationship matrix with the marker; the transformation matrix of the above/below tracking board and the relative relationship matrix, and the squat marker is calculated. The relative relationship between the upper mark and the relative relationship of the lower mark to the upper mark; then calculate the conversion matrix of the upper/lower mark of the dental form on the computerized tomographic image, and the relative relationship between the lower part and the upper mark , or the relative relationship of the lower mark to the upper mark to obtain the dynamic position of the lower 颚 grid point on the upper one or the lower 颚 grid point on the upper 颚Dynamic position; take the projection position of the dynamic position, calculate the depth amount, and then substitute it into its corresponding grid position function; 6 Repeat the second to sixth steps to completely obtain the grid function of all the cutting areas until the pre- Set the number of repetitions to reach; find the maximum value of each of the weekly functions, that is, to obtain the deepest cutting point of the grid; and then the deepest b of each grid 丨# $刀肖] point into the bamboo grid calculation, Constructing a tooth occlusal surface. The purpose of this month is to suggest a stereo denture model by the above-mentioned tooth occlusal surface, that is, after the above steps, further comprising: according to the tooth shape and height of the patient's adjacent teeth, with the standard denture through the computerized tomography The reconstructed model obtained after scanning, or the mapping model obtained by the mirroring technique' is used to establish the dental mesh model of the patient; and due to the tooth mesh die-cutting sentence, the winter ancient $+ Α, saponin 3 has lingual side and The buccal side and the front and back sides: Bu and then will be different from the tooth occlusal surface to establish a complete standing, denture. The above-mentioned simulated crown method is mainly repeated by the patient multiple times ( The magical heart movement has reached the establishment of a digital record of the bite movement trajectory, and during this period, the upper and lower (4) is like the cutting motion of the "knife and" spot "workpiece" in the mechanical worker Wei, so if ', 颚 (4) teeth, for example, That is, the upper and the upper gingival surface must be calculated. At this time, the lower jaw model is regarded as “tool,,, and the trajectory is regarded as the cutting path, which is convenient for calculation and can be carved in space:: The parental surface is used as the upper surface. The tooth crown table φ, and can be stepped with a 2 = tooth mesh model to establish a denture model that meets the patient's denture model. It is the actual occlusion process of the patient who simulated the sputum in the invention. The arrangement of the teeth is as follows: :: Two: Degrees provide a detailed record of digitization, by occlusion: now: Musuke h 4 ^ Called 97 to present and output, ', 疋 teeth arranged in the degree of rain, crown shape, And gums (10)

7 S 1343799 cuspid)角度 - 化的依據。 使彳于義齒牙冠曲面製作上有 了自動化與科學 【實施方式】 首先請參閱第一 流程圖,其包含有: 翻製患者牙模, (50); 圖所示,係為本發明—較佳實施例的 於牙模的上/下顎分別加入標記物 將含有標記物之牙模進行電腦斷層掃描,以取得牙模 網格資料以及上/下顎標記物於電腦斷層影像之轉換矩陣 (51) ’其中該牙模網格資料係依照選擇切削區域及投影範 圍分成mxn複數網格; ,拍攝患者口含追蹤板的咬合動作,以取得上/下顎追 縱板之轉換矩陣’及其與標記物之相對關係矩陣(Μ); 以上/下顎追蹤板之轉換矩陣及相對關係矩陣,計算 出下f員標記物之於上顆標記之相對關係、,或下顎標記物之 於上顎標記之相對關係(53); 再计异牙模上/下顎標記物於電腦斷層影像之轉換矩 陣’與下顎標記物之於上顎標記之相對關係、,或下顎標記 物之於上顆標記之相對關係’以獲得下顆網格點之於上顆 的動態位置,或下顎網格點之於上顎的動態位置(54); 取動態位置之投影位置,計算出其高度值後,再代入 於其對應網格位置函數中(55); 重覆第三至六步驟’以完整取得所有切削區域的網格 函數,直到預設重覆次數達到為止(56); 求各網格函數的最大信,,. + 值即代表取得格網格最高切削 點(57);及 #將各網格之最高切削點進行網格化計算,建構出一 立體之牙冠模型(58)。 β配p參閱第―圖所*,係為上述追縱板(1G)第一較 佳實施例,其包含有: —上基座(1彳),係貼附於上牙齦(41)外側,其外側再 向外延伸有-第-連接片(12),該基座係可由硬性樹脂製 % 成; —下基座(1 3),係貼附於下牙齦(42)外側,其外側再 向外延伸有一第二連接片(14 ),該基座係可由硬性樹脂製 成; 上追蹤片(1 5),係於一基板前端面設有複數標記物 (51)而後端面則連接至該上基座(彳彳)的第一連接片 (1 2),又,該標記物可由平面不規則圖案組成; 下追蹤片(1 6),係於一基板前端面設有複數標記物 _ (161) ’而後端面則連接至該下基座(13)的第二連接片 (1 4),又,該標記物可由平面不規則圖案組成。 明配合參閱第三圖所示,係為上述追蹤板(1〇a)的第二 較佳實施例,其包含有: 一上基座1)’係貼附於上牙齦(41)外側,其外側再 。卜L伸有第—連接片(1 2 ),該基座係可由硬性樹脂製 成; 一下基座(1 3),係貼附於下牙齦(42)外側,其外側再 向卜t伸有第一連接片(14 ),該基座係可由硬性樹脂製 1343799 成, 上這峨片(1 5),係於一基板前端面設有複數標記物 (1 51 a),而 & 戌*而面則連接至該上基座(11)的第一連接片 (12) ’又’該標記物LED燈; __ , 礙片(1 6) ’係於一基板前端面設有複數標記物 ( )而後端面則連接至該下基座(13)的第二連接片 ()X視為—剛體;又,該標記物可為l E D燈。 月配s參閱第四圖所示’係為執行明上述拍攝患者齒 •列(4〇)含追縱板的咬合動作的系統示意圖,令患者齒列上 /下牙齦固定有上,下基座(11)(13),令上,下追蹤片 (15)(16)露出於嘴部外,供一連接電腦(3〇)的數位攝影機拍 攝;當患者開始朝向不同位置進行咀嚼運動時,數位攝影 機即拍攝到上/下追蹤片(15)(16)之前端面標記物 (151)(161)之位移路徑,而可以搞點運動(c〇up|e㈣叫分 析,意即,由於下顎動作乃是根據人體肌肉控制,故令其 為從動件,而欲鎖定上顎缺牙位置的追蹤點,即視為耦點/,' 籲如此來即可對此追縱點進行運動分析,而計算出上/下 顎追蹤片(15)(16)之轉換矩陣,及其與標記物(151)(161)之 相對關係矩陣的數據。 以下進一步說明上述模擬牙冠之計算過程,請配合參 閱弟五圖所示:7 S 1343799 cuspid) Angle - the basis for the transformation. Automating and scientifically making the crown surface of the denture [Embodiment] First, please refer to the first flow chart, which includes: Reconstructing the patient's dental mold, (50); In the preferred embodiment, the upper/lower jaw of the dental mold is respectively added with a marker to perform a computed tomography scan of the dental model containing the marker to obtain a matrix of the dental mold and a conversion matrix of the upper/lower marker on the computed tomography image (51). 'The dental mold grid data is divided into mxn complex grid according to the selected cutting area and projection range; and the occlusion action of the patient's mouth containing tracking board is taken to obtain the conversion matrix of the upper/lower 颚 tracking board and its label The relative relationship matrix (Μ); the transformation matrix and the relative relationship matrix of the upper/lower tracking board, and the relative relationship between the lower marker and the upper marker, or the relative relationship of the lower marker to the upper marker (the relative relationship) 53); Recalculate the relative relationship between the conversion matrix of the upper/lower sputum marker on the computed tomography image and the sputum marker on the upper sputum mark, or the squat mark on the upper mark The relationship 'to obtain the dynamic position of the next grid point on the top, or the dynamic position of the lower grid point on the upper edge (54); take the projection position of the dynamic position, calculate the height value, and then substitute Corresponding to the grid position function (55); repeat the third to sixth steps 'to complete the grid function of all cutting regions until the preset number of repetitions reaches (56); find the maximum letter of each grid function The value of ,,. + represents the highest cutting point of the grid (57); and # grids the highest cutting point of each grid to construct a three-dimensional crown model (58). The first preferred embodiment of the above-mentioned tracking plate (1G) includes: an upper base (1彳) attached to the outer side of the upper gum (41), Further, the outer side extends outwardly with a -th connection piece (12) which can be made of a hard resin; the lower base (13) is attached to the outer side of the lower gum (42), and the outer side is further Extending outwardly, there is a second connecting piece (14), which is made of a hard resin; the upper tracking piece (15) is provided with a plurality of markers (51) on the front end surface of the substrate, and the rear end surface is connected to the a first connecting piece (12) of the upper base (彳彳), and the mark may be composed of a planar irregular pattern; the lower tracking piece (16) is provided with a plurality of marks on the front end surface of the substrate_ ( 161) 'The rear end face is then connected to the second connecting piece (14) of the lower base (13), and further, the mark may consist of a planar irregular pattern. As shown in the third figure, the second preferred embodiment of the tracking board (1〇a) includes: an upper base 1)' attached to the outer side of the upper gum (41), Outside again.卜L has a first connecting piece (1 2 ), the base can be made of a hard resin; the lower base (13) is attached to the outer side of the lower gum (42), and the outer side is further extended to the b The first connecting piece (14) is made of a hard resin made of 1343799, and the upper piece (15) is provided with a plurality of marks (1 51 a) on the front end surface of a substrate, and & The surface is connected to the first connecting piece (12) of the upper base (11) and the marking LED light; __, the blocking piece (16) is attached to the front end surface of a substrate with a plurality of markers ( And the second end piece () X connected to the lower base (13) is regarded as a rigid body; further, the mark may be a l ED lamp. The monthly matching s is shown in the fourth figure, which is a system diagram for performing the above-mentioned shooting of the patient's teeth and columns (4〇) with the tracking plate, so that the upper and lower gingiva of the patient's dentition are fixed with upper and lower pedestals. (11) (13), the upper and lower tracking films (15) (16) are exposed outside the mouth for a digital camera connected to a computer (3 〇); when the patient begins to chew at different positions, the digital position The camera captures the displacement path of the end face marker (151) (161) before the upper/lower tracking piece (15) (16), and can perform the movement (c〇up|e(4) is called analysis, that is, because the squatting action is It is based on the control of the human muscles, so it is a follower, and the tracking point to lock the position of the upper jaw is considered to be the coupling point /, ' so that the motion analysis can be performed on this tracking point, and the calculation is calculated. The conversion matrix of the upper/lower tracking slice (15) (16) and the data of the relative relationship matrix with the marker (151) (161). The following further explains the calculation process of the above simulated crown, please refer to the fifth figure. Shown as follows:

首先令上/下?員齒模的兩追蹤板轉換矩陣分別為A (上顏追蹤板)與ΤΜτ (下顎追蹤板),而下顯與上顏的 相對轉換為Tmt st = τΜ丁 ·τ^·,利用該轉換可 咬立上/下顆的 耦點運動關係,進而推算上下顎任意點的運動轨跡.其中· 10 拍攝時下顯標記物之於上顎標記物之相對關係) h由以下式子加以表示之:First order up/down? The two tracking board conversion matrices of the tooth model are A (upper tracking board) and ΤΜτ (lower tracking board), and the relative conversion between the lower display and the upper face is Tmt st = τ Μ · τ ^ ·, which can be used. The upper/lower coupling point motion relationship is bitten, and then the motion trajectory of any point of the upper and lower jaws is estimated. Among them, the relative relationship of the lower marker to the upper sputum mark during shooting is represented by the following formula:

Tmb_sb = W ·ΤΜτ.8τ - VsB = [Tmt mb|. ,Tmt_st . Vsb ^ 令下顯中任意點P之於上顆的相對位置為w 則该TP則^表示為下列轉換函數: ~ LTP_SBctJlx4= lTP_MBctL4 'VSB = P,x4 * [TmbJ'1 -Tmb_SB .Tmb_sb = W · ΤΜ τ τ τ τ τ τ τ lTP_MBctL4 'VSB = P, x4 * [TmbJ'1 -Tmb_SB .

利用上述轉換函數即可建立上下㈣㈣運動關係, 异上下靠意點的運動轨跡,#中擴展至下 於上顆的相對位置Τρ、,即是掃掠⑽呵)點,即不應該 與上顎牙過切(0Ve「cut)的位置。 由上述說明可知,患者至少2〇次的咀嚼運動以建立 數位化紀錄咬合運動軌跡,上下㈣運動就 中"刀具,’與"工件,,的切削運動,請參閱第五圖3至=示嚴 係本發明模擬牙冠方法建立出一上顎缺牙的切削咬合曲面 不意圖。Using the above transfer function, the upper and lower (four) (four) motion relations can be established, and the motion trajectory of the different points of the upper and lower points is extended, and the relative position of the upper and lower points is extended to Τρ, that is, the sweep (10) )) point, that is, the upper 颚The position of the tooth overcut (0Ve "cut". From the above description, the patient has at least 2 times of chewing movement to establish a digital record of the occlusion movement trajectory, and the upper and lower (four) movements are in the middle of the "knife, 'and &" workpiece, For the cutting motion, please refer to FIG. 5 to FIG. 3 to demonstrate the method of simulating the crown of the present invention to establish a cutting occlusal surface of the upper jaw missing tooth.

首先參閱第六A圖至第六D圖所示,由於為上顎缺 牙,故在對應顎上選擇—個切削範圍(441 ),即上顎缺牙處, 再經過記錄複數次之咀嚼運動後,即可取得各次咬合運動 切削面,再根據切削面找出最深切削點,並予以記錄後, 將複數取深切削點整合,即構成一配合下顎牙齒(43)表面 咀嚼時之咬合曲面(442)。 清配合參閱第七圖及第八A圖至第八D圖所示,係為 本發明另一個利用上述患者牙齒咬合曲面建立一完整立體 義齒的方法,其包含有: 1343799 建立患者牙齒咬合曲面(442)(70); 依據患者鄰近牙齒的齒型與高度,配合一立體齒型 (60) α建立。$患者的義齒(44)牙齒網格模型(61)(川;其 中該立體Μ⑽)來源可為—標準假牙經電腦斷層掃描後 所得到之重建模型(例如右邊同位置牙齒是好的,㈣右邊 的牙齒鏡射為左邊的牙齒),或是利用鏡射技術所得到之映 射模型;及 由於牙齒網格換型(61)包含有舌側與頻側面與前後側 面的外型’故再與將與牙齒咬合曲面(442)進行差集建立 一完整立體義齒(44)(72)。 【圖式簡單說明】 第一圖:係本發明方法流程圖。 第二圖:係本發明使用追蹤板之第一較佳實施例。 第三圖:係本發明使用追蹤板之第二較佳實施例。 第四圖:係執行本發明之系統示意圖。 第五圖:係、本發明模擬上顆缺牙的詳細流程圖。 第六A圖至第六D圖:係本發明模擬牙冠方法建立出 —上顎缺牙的切削咬合曲面示意圖。 第七圖:係本發明建立義齒之流程圖。 第八A圖至第八D圖:係配合第七圖流程的義齒模擬 示意圖。 【主要元件符號說明】 (1〇>(1〇a)追蹤板 (11)上基座Referring first to Figures 6A to 6D, since the upper jaw is missing teeth, a cutting range (441) is selected on the corresponding ankle, that is, after the upper jaw is missing, and after a plurality of chewing exercises are recorded, The occlusal moving cutting surface can be obtained, and the deepest cutting point can be found according to the cutting surface, and after recording, the plurality of deep cutting points are integrated to form a occlusal surface when the surface of the lower jaw tooth (43) is chewed (442 ). Referring to FIG. 7 and FIG. 8A to FIG. 8D, another method for establishing a complete denture using the above-mentioned patient's tooth occlusal surface is as follows: 1343799 Establishing a patient's tooth occlusal surface ( 442) (70); based on the tooth shape and height of the patient's adjacent teeth, with a three-dimensional tooth type (60) α established. $ patient's denture (44) dental mesh model (61) (Chuan; wherein the stereoscopic sputum (10)) source can be - the reconstructed model of the standard denture after computer tomography (for example, the right side of the same position is good, (4) right The tooth mirror is the left tooth), or the mapping model obtained by the mirror technique; and because the tooth mesh transformation (61) includes the lingual side and the frequency side and the front and back sides, A complete denture (44) (72) is created by performing a difference with the tooth occlusal surface (442). BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a flow chart of the method of the present invention. Second Figure: A first preferred embodiment of the present invention using a tracking board. Third Figure: A second preferred embodiment of the present invention using a tracking board. Fourth Figure: A schematic diagram of a system for performing the present invention. Fig. 5 is a detailed flow chart of the present invention for simulating the missing teeth. 6A to 6D: A method for simulating a crown of the present invention establishes a cutting occlusal surface of the upper jaw. Figure 7 is a flow chart of the denture of the present invention. Fig. 8A to Fig. 8D are schematic diagrams showing the denture simulation in accordance with the flow of the seventh figure. [Main component symbol description] (1〇>(1〇a) Tracking board (11) Upper base

S 12 1343799 (12)第一連接片 (14)第二連接片 (151)(151a)標記物 (161)(161a)標記物 (30)電腦 (41)上牙齦 (43)牙齒 (441)切削範圍 (60)立體齒型 (13)下基座 (15) 上追蹤片 (16) 下追蹤片 (20)攝影機 (40)齒列 (42)下牙齦 (44)義齒 (4 4 2)切削咬合曲面 13S 12 1343799 (12) First connecting piece (14) Second connecting piece (151) (151a) Marking (161) (161a) Marking (30) Computer (41) Upper gum (43) Teeth (441) cutting Range (60) Stereo Tooth (13) Lower Base (15) Upper Tracking (16) Lower Tracking (20) Camera (40) dentition (42) Lower gingival (44) Denture (4 4 2) Cutting occlusion Surface 13

Claims (1)

1343799 、申請專利範圍: 年^月〆日修正替換頁 1 種建立個人牙齒咬合曲面方法,其包含有: 翻=患者牙模,於牙模的上/下顆分別加入標記物; a:含有標記物之牙模進行電腦斷層掃描,以取得牙模 ㈣貝料以及±/下顆標記物於電腦斷層影像之轉換矩 陣;其中該牙模網格資料係依照選擇切削區域及投影範圍 分成複數網格; ,拍攝患者口含追蹤板的咬合動作,以取得上/下顎追 春縱板之轉換矩陣,及其與標記物之相對關係矩陣; 以上/下顎追蹤板之轉換矩陣及相對關係矩陣,計算 出下顎標記物之於上顎標記之相對關係,或下顎標記物之 於上顎標記之相對關係; 再計算牙模上/下顆標記物於電腦斷層影像之轉換矩 陣’與下顎標記物之於上顎標記之相對關係,或下顎標記 物之於上顎標記之相對關係,以獲得下顆網格點之於上顆 的動態位置,或下顎網格點之於上顎的動態位置; .㈣態位置之投影位s,計算出其深度值€,再代入 於其對應網格位置函數中; 重覆第三至六步驟,以完整取得所有切削區域的網格 函數,直到預設重覆次數達到為止; 求各網格函數的最大值,即代表取得格網格最深切削 點;及 再將各網格之最深切削點進行網格化計算,建構出一 牙齒咬合曲面。 2 .如申請專利範圍第丄項所述建立個人牙齒咬合曲 14 1343799 曰修正替換頁 面方法,該追蹤板係包含有: ~~ ~~~ —上基座,係貼附於上牙齦外側,其外側再向外延伸 有一第一連接片; —下基座,係貼附於下牙齦外側,其外側再向外延伸 有一第二連接片; 一上追蹤片,係於一基板前端面設有複數標記物,而 後端面則連接至該上基座的第一連接片;及 一下追蹤片,係於一基板前端面設有複數標記物,而 φ 後端面則連接至該下基座的第二連接片。 3 ’如申請專利範圍第2項所述建立個人牙齒咬合曲 面方法,該標記物係由平面不規則圖案組成。 4.如申請專利範圍第2項所述建立個人牙齒咬合曲 面方法’該標記物係由LED燈組成。 5 .如申請專利範圍第丄至4項任一項所述建立個人 牙齒咬合曲面方法,上述計算上/下顎追蹤板之轉換矩陣 及其與標記物之相對關係矩陣步驟中,係以耦點運動 Φ (couple point)分析得之。 6 ·如申請專利範圍第5項所述建立個人牙齒咬合曲 面方法’上述步驟四中之下顎標記物之於上顎標記物之相 對關係由下式表示之: st’Tstsb,又下顎 中任意點p之於上顎的相對位置為TP SBct,則該TP SBct則可 表示為下列轉換函數: [Tp_sBctL = [TP MBct]M .TMB SB = pix4 .[TMBct]-i .tmb_sb 〇 15 1343799 年v月^日修正 7·如申請專利範圍第5項所述建立個人牙齒咬合曲 面方法,上述步驟四中之上顎標記物之於下顎標記物之相 對關係由下式表示之: tsb-mb - tst sb . tst mt · τΜΒ ΜΤ = [τΜΤ ΜΒ 尸.[tmt st · Tst sb,又上 顎中任意點P之於下顎的相對位置為Tp_MBct,則該Tp_MBc^ 可表示為下列轉換函數: [ΤΡ_ΜΒ丄=[TP,tL . TsB MB = % . [τ聊 8 · —種建立義齒模型方法,其包含有: 建立個人牙齒咬合曲面,係由申請專利範圍第1至7 項所述之方法所建立之; 依據患者鄰近牙齒的齒型與高度,配合一立體齒型, 以建立該患者的牙齒網格模型;及 由於牙齒網格模型包含有舌側與頰側面與前後側面的 外5L ’故再與將與牙齒咬合曲面進行差集,建立 體義齒。 9.如申請專利範圍第8項所述之建立義齒模型方 ' 、巾X立體齒型係為一標準假牙經電腦斷層掃描後所 得到之重建模型。 1〇 >申晴專利範圍第8帛所述之建立義齒模型方 法,其中該立體齒型位、 t係u鏡射方式得到之映射模型。 十一、圖式: 如次頁 161343799, the scope of patent application: Year ^ month the next day to replace the replacement page 1 method for establishing a personal tooth occlusion surface, which includes: Turning = patient dental mold, adding markers to the upper/lower teeth of the dental mold; a: containing the mark The dental model of the object is scanned by computer to obtain the transformation matrix of the dental mold (4) shell material and the ±/lower marker in the computed tomography image; wherein the dental mold grid data is divided into a plurality of grids according to the selected cutting area and the projection range. ; to take the bite movement of the patient's mouth tracking board to obtain the transformation matrix of the upper/lower chasing spring vertical board and its relative relationship matrix with the marker; the conversion matrix and relative relationship matrix of the above/lower tracking board, calculate The relative relationship of the lower jaw mark to the upper mark, or the relative relationship of the lower mark to the upper mark; and the calculation of the conversion matrix of the upper/lower mark of the dental form to the computed tomography image and the lower mark of the lower mark The relative relationship, or the relative relationship of the squat mark to the upper mark, to obtain the dynamic position of the next grid point on the top, or the lower 颚The dynamic position of the grid point on the upper jaw; (4) the projection position s of the position of the state, calculate its depth value, and substituting it into its corresponding grid position function; repeat the third to sixth steps to completely obtain all the cutting areas The grid function until the preset number of repetitions is reached; the maximum value of each grid function is obtained, that is, the deepest cutting point of the grid is obtained; and the deepest cutting point of each grid is gridded, and the construction is performed. Make a tooth occlude surface. 2. The method for establishing a personal dental occlusion 14 1343799 曰 correction replacement page as described in the scope of the patent application, the tracking plate includes: ~~~~~ - the upper base attached to the outer side of the upper gum, a first connecting piece extends outwardly; a lower base is attached to the outer side of the lower gingival, and a second connecting piece extends outwardly from the outer side; an upper tracking piece is provided on the front end surface of the substrate a marker, wherein the rear end face is connected to the first connecting piece of the upper base; and the lower tracking piece is provided with a plurality of markers on the front end surface of the substrate, and the rear end face of the φ is connected to the second connection of the lower base sheet. 3 ' The method of establishing a personal dental occlusion curve as described in claim 2, which consists of a planar irregular pattern. 4. A method of establishing a personal dental occlusion curve as described in claim 2, wherein the marker is composed of an LED lamp. 5. The method for establishing an individual dental occlusal surface according to any one of claims 1-4, wherein the step of calculating a transformation matrix of the upper/lower 颚 tracking plate and its relative relationship with the marker is performed by a coupling point Φ (couple point) analysis. 6 · The method for establishing a personal dental occlusion surface as described in the fifth paragraph of the patent application. The relative relationship of the sputum marker to the upper sputum marker in the above step 4 is represented by the following formula: st'Tstsb, and any point in the lower jaw p The relative position of the upper jaw is TP SBct, then the TP SBct can be expressed as the following conversion function: [Tp_sBctL = [TP MBct]M .TMB SB = pix4 .[TMBct]-i .tmb_sb 〇15 1343799 v month^ Japanese Correction 7. The method for establishing a personal dental occlusion surface as described in claim 5, wherein the relative relationship of the upper sputum marker to the squat marker in the above step 4 is represented by the following formula: tsb-mb - tst sb . tst Mt · τΜΒ ΜΤ = [τΜΤ ΜΒ 尸.[tmt st · Tst sb, and the relative position of any point P in the upper jaw is Tp_MBct, then the Tp_MBc^ can be expressed as the following conversion function: [ΤΡ_ΜΒ丄=[TP, tL. TsB MB = % . [τ chat 8 · - A method for establishing a denture model, comprising: establishing a personal tooth occlusal surface, which is established by the method described in claim 1 to 7; Tooth shape Height, with a three-dimensional tooth shape to establish the patient's tooth mesh model; and because the tooth mesh model contains the outer 5L of the lingual and buccal sides and the front and rear sides, and then the difference will be with the tooth occlusal surface, Establish a denture. 9. The model of establishing a denture model according to item 8 of the patent application scope is a reconstruction model obtained after a computerized tomography scan of a standard denture. 1〇 > The method of establishing a denture model described in the eighth paragraph of Shen Qing Patent Range, wherein the three-dimensional tooth position and the t-system u-mirror method obtain a mapping model. XI. Schema: as the next page 16
TW096142655A 2007-11-12 2007-11-12 Method of developing personal occlusion surface and its applications in denture fabrication TWI343799B (en)

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