201008553 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種牙科植體之牙根，更具體而言，係關於如下 ' 的一種牙科植體之牙根：即使一齒槽骨（alveolar bone )具有入口 窄且下部寬之一葫蘆形狀時，該牙科植體之牙根亦有利於在不使 用額外醫學方法之條件下放置一植體於一期望位置，並表現出一 優異固定力以輕易地達成骨整合（ossointegration ) ’俾使植牙手術 之失敗率可最小化。 ❹ 【先前技術】 一般而言，當人體失去一組織時，移植即意味著一康復替代物。 在牙科中，移植意味著進行一系列手術以移植一人造牙齒 (artificial tooth)。亦即’移植係為一種手術，用以放置一牙根於 失去一牙齒之齒槽骨中並於該牙根上放置一人造牙齒，藉此恢復 牙齒之功能。牙根係為一種人造之牙齒根部，用以替代所失去之 牙齒根部’且由不會對人體表現出排異症狀（rejecti〇n symptom) ❹之鈦製成。 對於一般之假體（prostheses)或假牙（denture)，經過一段時間 之後’周圍之牙齒或骨可能會受損。然而，移植並不會損壞周圍 牙齒之組織’並可半永久性地使用’而不會產生鑛齒（decayed tooth)，並可實質保持與一天然牙齒相同之功能或形狀。 在人造牙齒手術（被稱為移植或移植手術）中，利用一鑽具製 作一孔於一齒槽骨中以作為一放置位置，然後放置一牙根於該齒 槽骨中。在牙根與齒槽骨發生骨整合後，將一支座（abutment)結 201008553 合至該牙根。最後，將一最終假體覆蓋於該支座之頂部，藉此完 成該手術。 移植不僅能恢復單個缺失之牙齒，且亦能改善一局部缺齒之患 者或一完全無齒之患者之人造牙齒之功能，並增強在牙齒假體康 復中之美觀性。此外，移植可使施加至齒槽骨組織之過大應力分 佈於植體周圍並有助於一排牙齒之穩定。 在一移植手術中最先放置之牙根具有一槽型螺釘（screw type screw)之形狀，並根據牙根之大小而被劃分成小型牙根、標準牙 根及大型牙根。相應地，手術人員可根據欲放置牙根之一齒槽骨 之形狀、以及周圍部分之形狀和空間，選取所用牙根之大小。對 於具有一正常口腔結構之大多數患者，常常使用實質具有一槽型 螺釘形狀且具有一不同大小之牙根。 然而，當口腔結構異常時，尤其是當欲放置牙根之一齒槽骨具 有其中入口較窄、下部較寬之一葫蘆形狀時，上述槽型牙根可能 不容易使用。換言之，在此種異常情況下放置上述一般牙根時， 可能難以獲得一所需之固定力且可能不會平穩地達成骨整合。 在此種情形中，因尚未開發出一種適宜之牙根，故在採用一種 醫學方法加寬齒槽骨之入口後放置槽型牙根。因此，移植手術之 成本增大且時間延長。而且，患者會頗為不便並對手術感到恐懼。 因此，需要開發一種牙科植體之牙根，即使欲放置牙根之一齒 槽骨具有其中入口窄且下部寬之一葫蘆形狀時，亦有利於在不使 用額外醫學方法之條件下放置一植體於一期望位置，並表現出一 201008553 優異固定力以輕易地達成骨整合，俾使植牙手術之失敗率可最小 化。 【發明内容】 k 本發明提供一種牙科植體之牙根，其即使一齒槽骨具有其中入 口窄且下部寬之一葫蘆形狀時，亦有利於在不使用額外醫學方法 之條件下放置一植體於一期望位置，並表現出一優異固定力以輕 易地達成骨整合，俾使植牙手術之失敗率可最小化。 _ 根據本發明之一態樣，提供一種牙科植體之牙根，包含一本體 部及一螺紋部（screw portion )，該螺紋部係螺旋地形成於該本體 部之一外表面並具有一螺紋（serew thread )，該螺紋距該本體部具 有一變化高度。 該螺紋部可包含：一初始進入螺紋部，形成於該本體部之最下 部；一最終固定螺紋部，形成於該本體部之最上部；以及一螺旋 連接螺紋部，位於該初始進入螺紋部與該最終固定螺紋部之間， ^ 用於連接該初始進入螺紋部與該最終固定螺紋部。 ❹ 該最終固定螺紋部與該螺旋連接螺紋部之至少其中之一之一邊 緣部被處理成彎曲的。 各該最終固定螺紋部與該螺旋連接部之該邊緣部之一段具有形 成於上側及下側中之複數直線段（linear section )及自該等直線段 之端點延伸出之一圓弧段（arc section )。 該螺紋部可設置於該本體部上，俾使一螺紋之高度自該本體部 之一中間部朝該本體部之任一端部逐漸減小。 5 201008553 該螺紋部之一螺紋之高度可介於約0 5毫米至約15毫米之一範 圍内。 該初始進入螺紋部可被加工成較該最終固定螺紋部與該螺旋連 接螺紋部更尖銳。 該本體部可具有一錐形形狀，其中該本體部之一截面直徑自該 本體部之一上部之一端頭朝其一下部逐漸減小。 一用以引導一放置部之一放置位置引導凸出加工部（placement position guide convex process portion )可更形成於該本體部上與該 端頭相對之一位置處，以使一中央部被加工成相較其它表面凸出。 該螺紋邛可a又置於该本體部上，使一螺紋高度除在該初始進入 螺紋部處外自該本體部之一上部朝其一下部逐漸增大。 一未形成有該螺紋部之非螺紋段可更形成於該本體部之一上部 中。 該牙科植體之牙根可更包含形成於該螺紋部中之一切削刀部 (cutting edge portion )。 該切削刀部可相對於該本體部之—長度方向沿—方向傾斜並形 成於該螺紋部上。 。亥切削刃部可與本體部對稱地形成於該本體部之相對侧上。 該牙科植體之牙根可更包含一體成型於該本體部之一上部之一 體成型支座部（integrai abutment portion)。 【實施方式】 201008553 1本申請案主張基於細8年8月2G日在韓國智慧財產局提出申 凊之韓國專利申請案第！ 0_2〇〇8 〇〇8 i 623號之權利，該韓國專利申 請案之揭露内容以引用方式全文倂入本文令。 為達成對本發明概念及其優點之充分理解，將引用用於例示本 發明實施例之_。以下，將參照關解釋本發明之實施例，以 砰細說明本發明。在附圖中，相同之參考編號表示相同之元件。 第1圖係為一立體圖，装+立w, 參 ❹ _ 性地顯不根據本發明之-實施例 牙科植體之牙根之方法。參見第1 «，複數顆牙齒 排列於—牙銀U中。料12係為用以粉碎食物以將其送入胃 要消化器官。儘管牙齒數量因人而異，然而-般具有約28 田失去任彳齒12時’亦即當失去—個牙齒部位時，不僅有損 且㈣食物頗為不便。因此，放置-牙根一取 代牙銀11中所失去牙齒12 _ 顯示，然而牙根係放置於牙酿u之一齒:;中儘=第1圖中未 行一鑽製操作，以形成一孔於齒槽骨中供根在：·〇置之前，執 金=°°可由鈦㈤或不會對人體表現出排異症狀…合 傳統上’用以取代牙㈣之牙齒根部以 (圖未不出）係放置於牙齦u之—音 根 因習知之牙根具有一槽型螺針之形狀之位置。 正常口腔結構之患者。然而’當齒槽骨具有其中二 201008553 之一葫蘆形狀時，習知之槽型牙根將難以使用，乃因難以獲得一 期望之固定力且無法平穩地進行骨整合。 口此本發明提供具有一改良結構之牙根100，其可恰當地應用 於上述軸形。舉例而言，本發明之牙根100可用於首次移植手術， 或者當一手術失敗時，直接放置一植體於一齒槽骨上而不於—受 損部位增補一預定骨替代材料。 第2圖係為第i圖之牙科植體之牙根之_立體圖。帛3圖係為 第1圖之牙科植體之牙根之—側視圖。第4圖顯示第1圖之牙科 植體之牙根之一使用狀態。 參見第2-4圖，根據本實施例之牙根100包含一本體部120及 了螺紋部130’螺紋部130係螺旋地形成於本體部120之-外表面 並具有-螺紋（咖wthread)，該螺紋距本體部i2G具有—變化高 度。-螺紋之高度係表示自本體部12Q之外表面至螺紋部⑽之 一侧端部之距離。 ^部12〇形成本實施例之牙根刚之央桿。因牙根⑽ —1圖所讀頭之-方向放置，故本體部12G實質具有—直 線結構。 構，Γ牙根中，—本體部（圖未示幻具有—圓柱形之直線矣 、中相對於-長度方向之所有截面直徑皆相同。相比之下， =施例之牙根⑽t，本體物具有相對於—長度方向以 角度逐漸變細之形狀。 亦即，在本實施例之牙根⑽中，本體部⑶被製造成具有__ 201008553 錐形形狀，使其截面直徑可從其上部之一端頭121向一放置位置 弓I 導凸出力口工部（placement position guide convex process portion ) 123逐漸減小。因本體部120係如上所述進行製造，牙根100之放 置變得容易。本體部120之截面直徑可係為約5毫米至約8毫米。 然而，本發明之範圍並非僅限於此。 在描述螺紋部130之前，首先描述端頭121及放置位置引導凸 出加工部123。端頭121係形成於本體部120之上部，一支座（圖 ^ 未示出）將後續組合於端頭121上。因此，具有一恆定節距之一 螺紋121a形成於端頭121内。 放置位置引導凸出加工部123係於端頭121之相對側形成於本 體部120中。放置位置引導凸出加工部123係為在放置牙根ι〇〇 過程中首先接觸一齒槽骨之一入口區域之部分。因此，在本實施 例中，放置位置引導凸出加工部123並非如習知牙根一樣平坦， 而是使其中央部被加工成相較其它表面凸出。 @ 中央部被加工成凸出的放置位置引導凸出加工部123用以在放 置牙根100過程中藉由接觸齒槽骨之入口區域而固定一放置位 置’且亦用以精確地引導牙根1〇〇之放置位置。 放置位置引導凸出加工部123之前端部可被加工成銳利的，但 並非必需將前端部加工成銳利的。大致圓形之V形即足以達成其 功能。 同時，因習知牙根具有一直線型螺釘形狀’故形成於習知牙根 上之螺紋部（圖未示出）之一螺紋之高度係為恆定的。然而，在 9 201008553 本實施例之牙根100巾，螺紋部π 招灿饨$ ^ 办狀不同於習知螺紋部之 形狀’俾虽-齒槽骨具有其中入口窄且底部 —， 在放置之後可獲得—優異固定力 〜❹形狀’ ’ 刀並進而可輕易地達成骨整合。 亦即，在本實施例之牙根1〇〇 t，螺紋部 本體部⑽之外表面，俾使螺紋 系螺旋地形成# 本體部㈣之任-端部逐漸減小。自本體部⑽之t部朝 參見第3圖’在本實施射，職部13()係 一 0 長度方向以-預定節距環繞五圈。可將環繞 體部120之一 相鄰螺紋間之節距增大至相較於習知螺紋部更寬，螺紋曰部130之 之固定力。螺纹j·# ’以提供一更大 之U疋刀微邛13〇之相鄰螺紋間之節距可 然而，本發明之範圍並非僅限於此。 1]·75倍節距。 當螺紋部13〇如在本實施例中—樣環繞五圈 按下述方式劃分。亦即，環繞五圈之螺紋部η累紋部⑽可 進入螺紋部！施，形成於本體部⑽之最下可包含：一初始 引導凸出加工部123; 一最終固定螺紋部i3〇e，=接至放置位置 ❹ 之最上部並連接至端頭121 ^及複數個螺料2於本體部120 及130d，形成於初始進入螺紋部咖與最 部130b、130c 間並用於連接初始進入螺紋部 尺螺紋部130e之 、與最終固定螺紋部13〇 就螺紋部130a-130e之螺紋夕古 Ue ° 、〈鬲度而言，位於嫂 13〇c^ 螺紋之高度自螺旋連接部l3〇e朝本體部”有最高之高度。 終固定螺紋部130e之螺紋係五巧 之彳壬—端部減小。最 '4、兮攻低。在本實 130a-130e之螺紋之高度可介 也例中，因螺紋部 …朱與約U毫米範圍内， 201008553 故最大螺紋高度係為1.5毫米。 當連接螺紋部130a-130e之外表面時，可獲得—廣口瓶（化） 之形狀。此種結構特性或形狀特性使牙根可輕易地應用於如第4 圖所不下部較入口為寬之齒槽骨。此外，於放置完成後，提供一 較大之固定力，俾可在一寬廣區域申平穩地達成骨整合。 初始進入螺紋部13〇a之邊緣部可被加工成相較最終固定螺紋部 130e及螺旋連接部130b、13〇()及13〇d更為銳利。此乃因不同於 Ο 其它螺紋部l30b_130e，初始進入螺紋部13〇a需要一有利於放置 之結構而非一可提供較大固定力之結構。 然而，其它螺紋部130b-130e (即最終固定螺紋部13如及螺旋 連接部130b、l30c及i3〇d)之邊緣部可被加工成彎曲的，如第3 圖之一圓形部所示。亦即，各該最終固定螺紋部u〇e與螺旋連接 部130b、13〇e及刪之邊緣部之一段具有形成於各該螺紋上側 及下側中之複數直線段（丨inear section) L及自該等直線段L之端 φ 點延伸出之一圓弧段（arc section) 在此種情形中，形成於上 侧及下侧中之直線段L不相互平行’但本發明並非僅限於此。圓 弧段C可具有_實質完整之圓形形狀或者在—側被加工成銳利形 狀之一圓形形狀。因此，具有上述結構之圓弧段C可不僅有利於 在一較大區域中與骨進行骨整合，且亦可為所放置之牙根ι〇〇提 供一較大支撐力或固定力。 在利用具上述構造之牙根100之一移植手術中，藉由使用一預 定鑽具製作—孔於齒槽骨中而設定一放置位置。然後，將本實施 例之牙根100安排於該放置位置並插入齒槽骨中，如第4圖所示。 201008553 即使當齒槽骨如第4圖所示具有其中入口窄且下部寬之一葫蘆 形狀時，牙根1〇〇之放置位置引導凸出加工部123亦接觸藉由鑽 製而形成之孔之一入口區域，然後按壓並沿一向右方向（沿順時 針方向）旋轉牙根100。接著，在旋轉螺紋部130之同時，穿過入 口區域用力放置牙根100。在放置完後，牙根100在齒槽骨下部之 一寬廣區域中被固定於對應於齒槽骨形狀之一位置處。 在相對於牙根100進行骨整合一段時間後，將一支座結合至牙 根100之端頭121。將一最終假體放置於該支座頂上，由此完成移 植手術。 如上所述，根據本發明，即便一齒槽骨具有其中入口窄且下部 寬之一葫蘆形狀時，牙科植體之牙根亦有利於在不使用額外醫學 方法之條件下放置一植體於一期望位置。此外，表現出一優異之 牙根固定力，俾可輕易地達成骨整合。藉此，可使植牙手術之失 敗率最小化。 第5圖係為根據本發明另一實施例之一牙科植體之牙根200之 一側面正視圖。第6及7圖分別係為第5圖之牙科植體之牙根200 之一平面圖及一底視圖。參見第5及6圖，根據本實施例之牙科 植體之牙根200包含一本體部220及一螺紋部230，螺紋部230 係螺旋地形成於本體部220之一外表面並具有一螺紋，該螺紋距 本體部220具有一變化高度，此實質相同於第1圖之牙根100之 結構。故，相同之組成元件將不再予以贅述。 然而，不同於上述實施例’在根據本貫施例之牙科植體之牙根 200中，螺紋部230係設置於本體部220上，使一螺紋之高度除在 201008553 一初始進入螺紋部230a處以外自 大。 牙根200之上部朝其下部逐漸增 在此種情形中，不同於第5_7圖 α所不之牙根200，螺紋之厚度（寬 度）可自本體部220之上部朝复下 /、下$增大。螺紋部230之邊緣部 可具有與在上述實施财所述者相同之職（參見第3圖之部分 A )。 在根據本實施例之牙科植體之牙根中，一其中未形成螺紋 ❾部230之非螺紋部220a更形成於本體部22〇之上部中。不同於第 5圖所示之非螺紋部2施，非螺紋部2施可根據欲放置牙根鳩 之一齒槽骨之形狀而或短或長。非螺紋部22〇a形成—可在其中達 成骨整合之寬廣區域，以幫助固定牙根2〇〇。 ’切削刃部（cutting edge portion) 232更形成於螺紋部230上。 切削刃部232之銳利尖端部有利於放置牙根200。切削刃部232 叮相對於本體部220之長度方向沿一傾斜方向形成於螺紋部230 上。在此種情形中，切削刃部232可與本體部220對稱地形成於 ® 本體部220之相對側，如第6及7圖所示。因本發明之範圍並非 僅限於上文所述，切削刃部232亦可不對稱地形成於本體部220 之相對侧。 藉由利用上述配置之牙根200，即便一齒槽骨具有其中入口窄且 下部寬之一葫蘆形狀時，牙科植體之牙根办有利於在不使用額外 醫學方法之條件下放置一植體於一期望位置。藉此，可充分獲得 本發明之效果，即可獲得一優異之牙根固定力、可輕易達成骨整 合ϋ可使植牙手術之失敗率可最小化。 13 201008553 因參照第8-16圖所述之牙科植體之牙根300、400及500具有 與牙根200實質相同之組成元件’故茲不予贅述且在以下說明中 可使用與第5-7圖中相同之參考編號。然而，在第8-16圖所述之 牙科植體之牙根300、400及500中，因本體部220之上部之結構 不同於第5-7圖之實施例，故以下將描述二者之差別。 第8圖係為根據本發明另一實施例之一牙科植體之牙根3⑼之 側面正視圖。第9及10圖分別係為第8圖之牙科植體之牙根3〇〇 之一平面圖及一底視圖。參見第8·10圖，在根據本實施例之牙科 植體之牙根300中，本體部220之上部具有一内部型端頭321之 結構，一支座（圖未示出）之一部分向内插入該端頭321中以耦 合至該端頭321。在此種情形中，内部型端頭32ι與本體部2如 可一體成型。如第8-10圖所示，内部型端頭321及本體部22〇可 相對於—斜面S彼此形成台階狀。 第11圖係為根據本發明另—實施例之一牙科植體之牙根侧之 側面正視圖。第12及13圖分別係為第u圖之牙科植體之牙根彻 之一平面圖及-底視圖。參見第u_n圖，在根據本實施例之牙科 1體之牙根400中，本體部22〇之上部具有一外部型端頭421之 結構’―支座（圖未示出）之—部分向内插人該端頭421中以輕 =該端頭421，並且本體部22〇之上部具有自其上表面突出之一 。因此，第㈣圖及第㈣圖之實施例彼此之不同 於疋否存在突出部42la’而其它結構及其操作皆實質相同。 側圖係為根據本發明另—實施例之—牙科植體之牙根500之 視圖。第15及16圖分別係為第14圖之牙科植體之牙根谓 201008553 之一平面圖及一底視圖。參見第14_16圖，在根據本實施例之牙 牙根 500 中，一體成型支座部（integral abutment portion ) 52】=成於本體部，之上部卜在形成有一體成型支座部52i 之本只知例之牙根5〇〇中，可省卻在放置牙根獨後單獨組合一 支座（圖未7F出）之操作。儘管在第14_i6圖中未形成第5圖之 切削刀部232，然而亦可形成切削刃部232。 如上所述’根據本發明，即便—齒槽骨具有其中人。窄且下部 〇 ' 1蘆形狀時，牙科植體之牙根亦有利於在不使用額外醫學 方法之條件下放置—植體於—期望位置。此外，表現出一優異之 牙根口S力’俾可輕易地達成骨整合。藉此，可使植牙手術之失 敗率可最小化。 儘S上文係參照本發明之實施例顯示及闡述本發明，然而應理 解二可在不f料請專利範園之精神及制之條件下，在形式及 細節上對其作出各種變動。 【圖式簡單說明】 〜附圖閱讀上文之詳細說明’將更易於理解本發明之實施 例，附圖中： 第1圖係為-立體圖，其示意性地顯示根據本發明之一實施例 之一種放置一牙科植體之牙根之方法； 第2圖係為第1圖之牙科植體之牙根之一立體圖； 第3圖係為第1圖之牙科植體之牙根之一侧視圖； 第4圖顯示第1圖之牙科植體之牙根之一使用狀態； 15 201008553 第5圖係為根據本發明另 面正視圖； 第6及7圖係分別為第5 底視圖； 一實施例之一牙科植體之牙根之一側 圖之牙科植體之牙根之一平面圖及一 第8圖係為根據本發明另 正視圖； 一實施例之一牙科植體之牙根之側面 第9及10圖係分別為第8圖之牙科植體之牙根之—平面圖及一 底視圖； ❿ 第U圖係為根據本發明另一實施例之-牙科植體之牙根之側面 正視圖； 第12及13圖係分別為第 一底視圖； 11圖之牙科植體之牙根之一平面圖及 第Μ圖係為根據本發明另 正視圖；以及 一實施例之一牙科植體之牙根之侧面 第15及16圖係分別為第14圖之牙科植體之牙根之—平面圖及 一底視圖。201008553 VI. Description of the Invention: [Technical Field] The present invention relates to a dental implant root, and more particularly to a dental implant root as follows: even an alveolar bone The root of the dental implant is also advantageous for placing the implant in a desired position without using an additional medical method, and exhibiting an excellent fixing force to easily achieve the shape of the dental implant. Osteointegration '俾' minimizes the failure rate of implant surgery. ❹ [Prior Art] In general, when the body loses a tissue, transplantation means a rehabilitation alternative. In dentistry, transplantation means performing a series of procedures to transplant an artificial tooth. That is, the transplantation is an operation for placing a tooth root in the alveolar bone of a tooth and placing an artificial tooth on the root to restore the function of the tooth. The root of the tooth is an artificial tooth root that replaces the lost tooth root' and is made of titanium that does not exhibit rejection symptoms to the human body. For general prostheses or dentures, the surrounding teeth or bone may be damaged after a period of time. However, the graft does not damage the tissue of the surrounding teeth and can be used semi-permanently without creating a decayed tooth and substantially maintaining the same function or shape as a natural tooth. In artificial tooth surgery (referred to as transplantation or transplant surgery), a hole is made in a toothed bone as a placement position, and then a root is placed in the tooth bone. After the osseointegration of the root and the alveolar bone, an abutment knot 201008553 is attached to the root. Finally, a final prosthesis is placed over the top of the abutment to complete the procedure. Transplantation not only restores a single missing tooth, but also improves the function of the artificial tooth of a partially edentulous patient or a completely toothless patient and enhances the aesthetics of the dental prosthesis. In addition, the graft allows excessive stress applied to the alveolar bone tissue to be distributed around the implant and contributes to the stability of a row of teeth. The root placed first in a transplant operation has the shape of a screw type screw and is divided into small roots, standard roots, and large roots depending on the size of the root. Accordingly, the operator can select the size of the root to be used according to the shape of the alveolar bone to which the root is to be placed, and the shape and space of the surrounding portion. For most patients with a normal oral structure, it is often used to have a slotted screw shape and a different size of root. However, when the oral structure is abnormal, especially when one of the alveolar bones to which the root is to be placed has a shape in which the inlet is narrow and the lower portion is wider, the above-mentioned groove root may not be easy to use. In other words, when such a general root is placed under such an abnormal condition, it may be difficult to obtain a desired fixing force and osseointegration may not be smoothly achieved. In this case, since a suitable root has not been developed, the groove root is placed after widening the entrance of the alveolar bone by a medical method. Therefore, the cost of the transplant operation is increased and the time is prolonged. Moreover, patients are quite inconvenient and afraid of surgery. Therefore, there is a need to develop a dental implant root, even if one of the alveolar bones to which the root is to be placed has a narrow entrance and a lower width of one gourd shape, it is advantageous to place an implant without using additional medical methods. A desired position and a 201008553 excellent fixation force to easily achieve osseointegration, so that the failure rate of implant surgery can be minimized. SUMMARY OF THE INVENTION The present invention provides a dental implant root that facilitates placement of an implant without the use of additional medical methods, even if one of the alveolar bones has a narrow entrance and a lower width of one cucurbit shape. At a desired position, and exhibiting an excellent fixation force to easily achieve osseointegration, the failure rate of implant surgery can be minimized. According to one aspect of the present invention, a dental implant root is provided, comprising a body portion and a screw portion, the thread portion being spirally formed on an outer surface of the body portion and having a thread ( Serew thread ), the thread has a varying height from the body portion. The threaded portion may include: an initial entry thread portion formed at a lowermost portion of the body portion; a final fixed thread portion formed at an uppermost portion of the body portion; and a screw connection thread portion located at the initial entry thread portion Between the final fixed thread portions, ^ is used to connect the initial entry thread portion with the final fixed thread portion.边 The edge portion of at least one of the final fixed thread portion and the spiral connection thread portion is treated to be curved. Each of the final fixed thread portion and the edge portion of the spiral connecting portion has a plurality of linear sections formed in the upper side and the lower side and an arc segment extending from the end points of the straight line segments ( Arc section ). The threaded portion may be disposed on the body portion such that a height of a thread gradually decreases from an intermediate portion of the body portion toward either end of the body portion. 5 201008553 The height of one of the threads of the thread may be in the range of from about 0 5 mm to about 15 mm. The initial entry threaded portion can be machined to be sharper than the final fixed threaded portion and the helically connected threaded portion. The body portion may have a tapered shape, wherein a cross-sectional diameter of the body portion gradually decreases from one end of the upper portion of the body portion toward a lower portion thereof. a placement position guide convex process portion may be formed on the body portion at a position opposite to the end portion such that a central portion is processed into It protrudes compared to other surfaces. The threaded jaw a is again placed on the body portion such that a thread height increases from the upper portion of the body portion toward the lower portion thereof at the initial entry thread portion. A non-threaded section in which the threaded portion is not formed may be formed in an upper portion of the body portion. The root of the dental implant may further comprise a cutting edge portion formed in the threaded portion. The cutter portion is inclined in the - direction with respect to the longitudinal direction of the body portion and formed on the threaded portion. . The cutting edge portion may be formed symmetrically on the opposite side of the body portion from the body portion. The root of the dental implant may further comprise an integral abutment portion integrally formed on one of the body portions. [Embodiment] 201008553 1 This application claims to be based on the Korean Patent Application file filed by the Korea Intellectual Property Office on August 2G! The right of the Korean Patent Application is hereby incorporated by reference. To fully understand the concept of the invention and its advantages, reference is made to exemplifying the embodiments of the invention. Hereinafter, the present invention will be described in detail with reference to the embodiments of the present invention. In the drawings, the same reference numerals are given to the same elements. Fig. 1 is a perspective view of a dental implant body root according to the present invention. See 1st «, a plurality of teeth are arranged in the tooth silver U. Feed 12 is used to comminute food to feed it into the stomach to digest the organ. Although the number of teeth varies from person to person, it is not only detrimental but also (4) food is inconvenient when there are about 28 fields that lose any caries 12 when they lose their teeth. Therefore, the placement-tooth root replaces the lost tooth 12 in the silver 11 _ display, however, the root is placed on one of the teeth of the tooth: a middle; in the first picture, a drill operation is not performed to form a hole The root in the alveolar bone is: Before the sputum, the gold = ° ° can be titanium (five) or does not show the symptoms of rejection of the human body... traditionally used to replace the root of the tooth (four) (not shown ) is placed in the gums - the root of the roots is known in the shape of a slotted screw. A patient with a normal oral structure. However, when the alveolar bone has a shape of one of the two 201008553 cucurbits, the conventional grooved root will be difficult to use because it is difficult to obtain a desired fixing force and the osseointegration cannot be smoothly performed. The present invention provides a root 100 having a modified structure which can be suitably applied to the above-mentioned shaft shape. For example, the root 100 of the present invention can be used for a first transplant, or when a procedure fails, placing an implant directly on a alveolar bone without adding a predetermined bone replacement material to the damaged portion. Figure 2 is a perspective view of the root of the dental implant of Figure i. The 帛3 image is the root of the dental implant of Figure 1 - side view. Fig. 4 shows the state of use of one of the roots of the dental implant of Fig. 1. Referring to Figures 2-4, the root 100 according to the present embodiment includes a body portion 120 and a threaded portion 130'. The threaded portion 130 is spirally formed on the outer surface of the body portion 120 and has a thread wthread. The thread has a varying height from the body portion i2G. - The height of the thread indicates the distance from the outer surface of the body portion 12Q to the one end portion of the threaded portion (10). The portion 12〇 forms the central rod of the root of the present embodiment. Since the root (10)-1 is placed in the direction in which the head is read, the body portion 12G has a substantially straight line structure. Structure, the root of the molar, the body part (the figure is not shown - the straight line of the cylinder, the diameter of all the sections in the middle direction is the same. In contrast, the root of the embodiment (10)t, the body has The shape is tapered at an angle with respect to the length direction. That is, in the root (10) of the embodiment, the body portion (3) is manufactured to have a tapered shape of __201008553, such that its cross-sectional diameter can be from one of its upper ends. The placement position guide convex process portion 123 is gradually reduced. Since the main body portion 120 is manufactured as described above, the placement of the root 100 is facilitated. The diameter may be from about 5 mm to about 8 mm. However, the scope of the present invention is not limited thereto. Before describing the threaded portion 130, the tip 121 and the placement position guiding convex portion 123 will be first described. The tip 121 is formed. On the upper portion of the body portion 120, a seat (not shown) is subsequently combined on the tip 121. Therefore, a thread 121a having a constant pitch is formed in the tip 121. The processing portion 123 is formed in the body portion 120 on the opposite side of the tip 121. The placement position guiding convex portion 123 is a portion that first contacts an entrance region of one of the alveolar bones during the placement of the root. Therefore, in the present embodiment, the placement position guiding convex processing portion 123 is not as flat as the conventional root, but the central portion thereof is processed to protrude from the other surface. @ The central portion is processed into a convex placement. The position guiding convex processing portion 123 is configured to fix a placement position by contacting the entrance region of the alveolar bone during the placement of the root 100 and also to accurately guide the placement position of the root 1 . The front end portion of the processed portion 123 can be processed to be sharp, but it is not necessary to process the front end portion into a sharp shape. The substantially circular V shape is sufficient to achieve its function. Meanwhile, since the conventional root has a straight screw shape, it is formed in The height of the thread of one of the threaded portions (not shown) of the conventional root is constant. However, at 9 201008553, the root of the tooth 100 towel, the thread portion π 饨 饨 饨 $ ^ The shape is different from the shape of the conventional threaded portion. Although the alveolar bone has a narrow inlet and a bottom portion, it can be obtained after placement - excellent fixation force ~ ❹ shape ' 'knife and then osseointegration can be easily achieved. In the root of the present embodiment, the outer surface of the threaded portion body portion (10), the threaded portion is spirally formed. The end portion of the body portion (4) is gradually reduced. From the portion of the body portion (10) toward the reference portion Figure 3 'In this implementation, the post 13 () is a 0-length direction surrounded by a predetermined pitch of five turns. The pitch between adjacent threads of one of the surrounding bodies 120 can be increased to It is known that the threaded portion is wider and the fixing force of the threaded weir portion 130. Thread j·# ' to provide a pitch between adjacent threads of a larger U 邛 13 可 13 可 However, the scope of the present invention is not limited thereto. 1]·75 times pitch. When the threaded portion 13 is wound around five turns as in the present embodiment, it is divided as follows. That is, the threaded portion of the threaded portion around the five turns (10) can enter the threaded portion! The lowermost portion of the body portion (10) may include: an initial guiding protrusion processing portion 123; a final fixing thread portion i3〇e, = connected to the uppermost position of the placement position 并 and connected to the end 121 ^ and a plurality of The screw 2 is formed on the main body portions 120 and 130d between the initial thread insertion portion 130b and 130c and is used for connecting the initial thread portion thread portion 130e with the final fixing thread portion 13 with respect to the thread portion 130a-130e. The thread Uygur Ue °, in terms of the degree of twist, is located at the height of the thread of the 嫂13〇c^ thread from the spiral connection portion l3〇e toward the body portion. The thread of the final fixed thread portion 130e is a clever one.壬—The end is reduced. The most '4, 兮 attack is low. The height of the thread of the 130a-130e can also be referred to as the thread part... Zhu and about U mm, 201008553 1.5 mm. When connecting the outer surfaces of the threaded portions 130a-130e, the shape of the jar can be obtained. This structural property or shape characteristic allows the root to be easily applied to the lower portion than the lower portion as shown in Fig. 4. Is a wide alveolar bone. In addition, after placement is complete Providing a large fixing force, the osseointegration can be smoothly achieved in a wide area. The edge portion of the initial entry thread portion 13a can be processed to be compared with the final fixed thread portion 130e and the screw connection portion 130b, 13A. () and 13〇d are sharper. This is because unlike the other threaded portion l30b_130e, the initial entry into the threaded portion 13〇a requires a structure that facilitates placement rather than a structure that provides a larger holding force. The edge portions of the threaded portions 130b-130e (i.e., the final fixed thread portions 13 and the spiral connecting portions 130b, l30c, and i3〇d) may be processed to be curved as shown in a circular portion of Fig. 3. That is, Each of the final fixed thread portion u〇e and the spiral connecting portions 130b, 13〇e and the cut edge portion has a plurality of straight line segments L formed in the upper side and the lower side of the thread and from One end of the straight line segment L is extended by an arc section. In this case, the straight line segments L formed in the upper side and the lower side are not parallel to each other', but the present invention is not limited thereto. Segment C may have a substantially complete circular shape or on the side It is processed into a circular shape of a sharp shape. Therefore, the circular arc segment C having the above structure can not only facilitate osseointegration with bone in a large area, but also provide a one for the placed root 〇〇 a large supporting force or a fixing force. In a transplant operation using the root 100 having the above configuration, a placement position is set by using a predetermined drill to make a hole in the alveolar bone. Then, the present embodiment is set. The root 100 is arranged at the placement position and inserted into the alveolar bone as shown in Fig. 4. 201008553 Even when the alveolar bone has a shape in which the inlet is narrow and the lower portion is one of the cucurbits as shown in Fig. 4, the root 1〇〇 The placement position guiding projection processing portion 123 also contacts an inlet region of a hole formed by drilling, and then presses and rotates the root 100 in a rightward direction (clockwise direction). Next, while rotating the threaded portion 130, the root 100 is placed with force through the inlet region. After placement, the root 100 is secured in a wide area of the lower portion of the alveolar bone at a location corresponding to the shape of the alveolar bone. After a period of osseointegration with respect to the root 100, a seat is coupled to the tip 121 of the root 100. A final prosthesis is placed on top of the abutment, thereby completing the implantation procedure. As described above, according to the present invention, even if a coronal bone has a shape in which the inlet is narrow and the lower portion is wide, the root of the dental implant is advantageous for placing an implant in an expectation without using an additional medical method. position. In addition, it exhibits an excellent root anchoring force, and osseointegration can be easily achieved. Thereby, the failure rate of dental implant surgery can be minimized. Figure 5 is a side elevational view of the root 200 of a dental implant in accordance with another embodiment of the present invention. Figures 6 and 7 are a plan view and a bottom view, respectively, of the dental implant root 200 of Figure 5. Referring to FIGS. 5 and 6, the dental implant root 200 of the present embodiment includes a body portion 220 and a threaded portion 230. The threaded portion 230 is spirally formed on an outer surface of the body portion 220 and has a thread. The thread has a varying height from the body portion 220, which is substantially the same as the structure of the root 100 of FIG. Therefore, the same components will not be described again. However, unlike the above embodiment, in the root 200 of the dental implant according to the present embodiment, the threaded portion 230 is disposed on the body portion 220 such that the height of a thread is divided by the initial entry of the thread portion 230a at 201008553. arrogant. The upper portion of the root 200 is gradually increased toward the lower portion. In this case, unlike the root 200 of the fifth embodiment, the thickness (width) of the thread can be increased from the upper portion of the body portion 220 toward the lower/lower cost. The edge portion of the threaded portion 230 may have the same position as described in the above-described implementation (see Part A of Fig. 3). In the root of the dental implant according to the present embodiment, a non-threaded portion 220a in which the threaded portion 230 is not formed is formed in the upper portion of the body portion 22A. Unlike the non-threaded portion 2 shown in Fig. 5, the non-threaded portion 2 may be short or long depending on the shape of the alveolar bone to which the root canal is to be placed. The non-threaded portion 22a is formed - a wide area in which osseointegration can be achieved to help secure the root 2〇〇. A cutting edge portion 232 is formed on the threaded portion 230. The sharpened tip portion of the cutting edge portion 232 facilitates placement of the root 200. The cutting edge portion 232 is formed on the threaded portion 230 in an oblique direction with respect to the longitudinal direction of the body portion 220. In this case, the cutting edge portion 232 may be formed symmetrically with the body portion 220 on the opposite side of the ® body portion 220, as shown in Figures 6 and 7. Since the scope of the present invention is not limited to the above, the cutting edge portion 232 may be asymmetrically formed on the opposite side of the body portion 220. By using the root 200 of the above configuration, even if a alveolar bone has a shape in which the inlet is narrow and the lower portion is wide, the dental implant is advantageous for placing an implant without using an additional medical method. Expected location. Thereby, the effect of the present invention can be sufficiently obtained, and an excellent root fixing force can be obtained, and bone consolidation can be easily achieved, and the failure rate of the dental implant surgery can be minimized. 13 201008553 The dental roots 300, 400 and 500 of the dental implant described with reference to Figures 8-16 have substantially the same constituent elements as the root 200, and therefore will not be described again and can be used in the following description with Figures 5-7. The same reference number in the middle. However, in the dental implant roots 300, 400 and 500 described in Figs. 8-16, since the structure of the upper portion of the body portion 220 is different from the embodiment of Figs. 5-7, the difference between the two will be described below. . Figure 8 is a side elevational view of the root 3 (9) of a dental implant in accordance with another embodiment of the present invention. Figures 9 and 10 are a plan view and a bottom view, respectively, of the root of the dental implant of Figure 8. Referring to Fig. 8-10, in the dental implant root 300 according to the present embodiment, the upper portion of the body portion 220 has a structure of an inner type end 321 in which one of the seats (not shown) is inserted inwardly. The tip 321 is coupled to the tip 321 . In this case, the inner end portion 32i may be integrally formed with the body portion 2. As shown in Figs. 8-10, the inner end portion 321 and the main body portion 22 can be stepped with respect to each other with respect to the inclined surface S. Figure 11 is a side elevational view of the root side of a dental implant in accordance with another embodiment of the present invention. Figures 12 and 13 are respectively a plan view and a bottom view of the dental implant of Fig. u. Referring to the u-n figure, in the dental root 400 of the dental body according to the present embodiment, the upper portion of the body portion 22 has an external type end 421 structure--the support (not shown) is partially interpolated. The person in the end 421 is lightly = the end 421, and the upper portion of the body portion 22 has one of the protrusions from the upper surface thereof. Therefore, the embodiments of the fourth (fourth) and (four)th drawings are different from each other in that the protruding portion 42la' is present and the other structures and operations thereof are substantially the same. The side views are views of a dental implant root 500 in accordance with another embodiment of the present invention. Figures 15 and 16 are a plan view and a bottom view of the dental implant of the dental implant of Figure 14, respectively. Referring to Fig. 14-16, in the dental root 500 according to the present embodiment, an integral abutment portion 52 is formed in the body portion, and the upper portion is formed with the integrally formed abutment portion 52i. In the case of the roots of the roots, it is possible to dispense with the operation of separately combining a seat after the placement of the roots (Fig. 7F). Although the cutter portion 232 of Fig. 5 is not formed in Fig. 14-i6, the cutting edge portion 232 may be formed. As described above, according to the present invention, even if the alveolar bone has a person therein. In the narrow and lower 〇 '1 reed shape, the root of the dental implant is also advantageous for placement in the desired position without the use of additional medical methods. In addition, an excellent root S-force can be easily achieved. Thereby, the failure rate of dental implant surgery can be minimized. The present invention has been shown and described with reference to the embodiments of the present invention. However, it should be understood that various changes in form and detail may be made without departing from the spirit and scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS [Embodiment of the invention will be understood more readily from the detailed description of the drawings, in which: FIG. 1 is a perspective view, schematically showing an embodiment of the invention a method of placing the root of a dental implant; FIG. 2 is a perspective view of the root of the dental implant of FIG. 1; FIG. 3 is a side view of the root of the dental implant of FIG. 1; Figure 4 shows the state of use of the root of the dental implant of Figure 1; 15 201008553 Figure 5 is a further elevational view according to the invention; Figures 6 and 7 are respectively a fifth bottom view; one of the embodiments A plan view of a root of a dental implant on one side of a dental implant and an eighth view are a front view according to the present invention; one embodiment of the dental implant has a lateral view of the root of the dental implants 9 and 10 Fig. 8 is a plan view and a bottom view of the root of the dental implant of Fig. 8; ❿ Fig. U is a side elevational view of the root of the dental implant according to another embodiment of the present invention; Figs. 12 and 13 The first bottom view; the dental root of the 11th figure The plan view and the plan view are further views according to the present invention; and one of the embodiments of the dental implant, the sides 15 and 16 of the dental implant are respectively the root of the dental implant of FIG. 14 - a plan view and a bottom view.
【主要元件符號說明】 11 .牙銀 12a I牙齒根部 120 :本體部 121a :螺紋 12 :牙齒 100 :牙根 121 =端頭 U3 :放置位置引導凸出加工部 16 201008553[Description of main component symbols] 11. Tooth silver 12a I Root of the tooth 120: Main body part 121a: Thread 12: Teeth 100: Root 121 = End U3: Placement position guiding convex processing part 16 201008553
130 :螺紋部 130b :螺旋連接部 130d :螺旋連接部 200 :牙科植體之牙根 220a :非螺紋部 230a :初始進入螺紋部 300 :牙科植體之牙根 400 :牙科植體之牙根 421a :突出部 130a :初始進入螺紋部 130c :螺旋連接部 130e :最終固定螺紋部 220 :本體部 230 :螺紋部 232 :切削刃部 321 :内部型端頭 421 :外部型端頭 500 :牙科植體之牙根 521 : —體成型支座部130: screw portion 130b: screw connection portion 130d: screw connection portion 200: dental implant root 220a: non-thread portion 230a: initial entry thread portion 300: dental implant root 400: dental implant root 421a: protrusion 130a: initial entry thread portion 130c: screw connection portion 130e: final fixing thread portion 220: body portion 230: thread portion 232: cutting edge portion 321: inner type end head 421: outer type end piece 500: dental implant root 521 : — Body forming support