JPH01178244A - Apparatus for setting position of soft tissue plate in dental x-ray apparatus - Google Patents
Apparatus for setting position of soft tissue plate in dental x-ray apparatusInfo
- Publication number
- JPH01178244A JPH01178244A JP63001276A JP127688A JPH01178244A JP H01178244 A JPH01178244 A JP H01178244A JP 63001276 A JP63001276 A JP 63001276A JP 127688 A JP127688 A JP 127688A JP H01178244 A JPH01178244 A JP H01178244A
- Authority
- JP
- Japan
- Prior art keywords
- soft tissue
- detection
- detection means
- tissue plate
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 61
- 230000002441 reversible effect Effects 0.000 claims description 4
- 238000003384 imaging method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 description 10
- 210000002455 dental arch Anatomy 0.000 description 4
- 210000004709 eyebrow Anatomy 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 210000001061 forehead Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本願は、歯科用レントゲン装置において、被撮影者の顔
面の軟組織部を透過するＸ線の量と、他のｍ織部を透過
するＸ線の量とをほぼ等しくするために、Ｘ４１発生部
と被写体との間に配設される軟組織板の位置を自動的に
設定する軟組織板の位置設定装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This application relates to a dental X-ray device that is used to determine the amount of X-rays that pass through the soft tissues of the patient's face and the amount of X-rays that pass through other tissue areas. The present invention relates to a soft tissue plate positioning device that automatically sets the position of a soft tissue plate disposed between an X41 generating part and a subject in order to make the values approximately equal.
従来の技術
従来、歯科治療の診断に必要なレントゲン撮影において
、被撮影者の顔面を側方向より撮影する撮影方向（ｉｌ
！ｌ常セファロ撮影と指称する）があり、この撮影方向
において、Ｘ線が透過し易い軟組織部（顔面のこめかみ
位置を通る垂直より前面部分）のＸ線量と、その他の組
織部分を透過するＸ綿量とをほぼ等しくし、フィルムに
おける影像の黒化度を均一化して、撮影精度を亮めるた
めに、レントゲン装置のＸ線照射部位置に、Ｘ線照射口
と対向して、Ｘ線の半透過性の材料例えばアルミニュム
から成る軟組織板と、これを横動可能に＝ｎ整する調整
機構と、その横動位置を指示する目盛とが装備されてお
り、撮影にあたっては、軟ＩＪｌｔｓ板を調整しながら
、技者が被撮影者の軟組織部に対応するであろう位置を
目測により、目盛に合わせて設定していた。2. Description of the Related Art Conventionally, in X-ray photography necessary for diagnosis of dental treatment, the photographic direction (IL) is used to photograph the subject's face from the side.
! In this imaging direction, the amount of X-rays in the soft tissues where X-rays can easily penetrate (the front part from the vertical direction passing through the temples of the face) and the amount of X-rays that pass through other tissue parts. In order to equalize the amount of radiation, to equalize the degree of blackening of the image on the film, and to improve imaging accuracy, a It is equipped with a soft tissue plate made of a semi-transparent material such as aluminum, an adjustment mechanism that allows it to move laterally, and a scale that indicates the position of the lateral movement. While making adjustments, the technician visually measured the position that would correspond to the subject's soft tissue and set it according to the scale.
発明が解決しようとする課題
ところが、従来の構成によれば、軟組織板の調整は専ら
技者の感にたよるものであるため、被撮影者の実際上の
軟組織部と、軟組織板により覆われる部分との間に誤差
が生じ、撮影精度を損なうという欠陥があった。Problems to be Solved by the Invention However, according to the conventional configuration, the adjustment of the soft tissue plate depends solely on the technician's feeling, so that the actual soft tissue part of the subject and the soft tissue plate are covered by the soft tissue plate. The problem was that errors occurred between the two parts, impairing the accuracy of the photograph.
そこで、本願は被撮影者の軟組織位置を実測し、その実
測値に相当して軟組織板を自動的に移動することにより
従来のものの欠陥を改善することを目的としたものであ
る。Therefore, the purpose of the present application is to actually measure the soft tissue position of the subject and to automatically move the soft tissue plate in accordance with the measured value, thereby improving the deficiencies of the conventional method.
問題点を解決するための手段
本願は、上記した目的を達成するために、被撮影者の軟
組織位置を実測し、その実測値を検知信号として出力す
る第１検出手段と、正逆回転の駆動モータによって軟組
織板をＸ線の照射領域で移動調整すると共に、その移動
量を検知信号として出力する第２検知手段と、前記第１
検知手段の検知出力と、前記第２検知手段の検知出力と
を比較して、その比較信号により、前記駆動モータを正
逆方向に回転制御する比較回路とから構成したものであ
る。Means for Solving the Problems In order to achieve the above-mentioned purpose, the present application provides a first detection means that actually measures the position of the soft tissue of the subject and outputs the measured value as a detection signal, and a drive that rotates forward and backward. a second detection means for adjusting the movement of the soft tissue plate in the X-ray irradiation region by a motor and outputting the amount of movement as a detection signal;
The apparatus comprises a comparison circuit that compares the detection output of the detection means and the detection output of the second detection means and controls the rotation of the drive motor in forward and reverse directions based on the comparison signal.
作 用
しかして、軟組織仮により覆われる領域が、被撮影者を
実測した場合の軟Ｍ織部よりも不足しているときは、第
１検知手段における検知信号出力が、第２検知手段にお
ける検知信号出力よりも大きく、この差に相当する出力
が、比較回路により出力し、その出力により駆動モータ
は、その差が零になるまで、一方向に駆動する。Function: When the area covered by the soft tissue provisional is smaller than the soft tissue area when the photographed person is actually measured, the detection signal output from the first detection means is equal to the detection signal output from the second detection means. The comparator circuit outputs an output that is larger than the output and corresponds to this difference, and the drive motor is driven in one direction by that output until the difference becomes zero.
また軟組織板により覆われる領域が、被撮影者を実測し
た場合の軟組織部より越えているときは、第１検知手段
における検知信号出力が、第２検知手段におてる検知出
力も小さく、その差に相当する出力が、比較回路より出
力し、その出力により駆動モータは、その差が零になる
まで、前記と逆方向に駆動し、これによって被撮影者の
軟組織板によって正しく覆うことができる。In addition, when the area covered by the soft tissue plate exceeds the soft tissue part of the photographed person, the detection signal output from the first detection means and the detection output from the second detection means are also small, and the difference between them is The comparator circuit outputs an output corresponding to , which drives the drive motor in the opposite direction until the difference becomes zero, thereby ensuring proper coverage by the soft tissue plate of the subject.
実 施 例
以下図面と共に本願の実施例を詳述する。第１図は、歯
列弓に沿って連続撮影するパノラマ撮影機構と、歯列弓
を部分的に撮影するセファロ撮影機構とを具備した歯科
用レントゲン装置の総体を示しており、ベース（１）上
の前後位置に、柱体（２）と、椅子（３）とが設置され
ている。前記柱体（２）の上部には、一端にＸ端にＸ線
照射部（４）を、他端にパノラマ用撮影フィルムを内蔵
したフィルム回転筒（５）を対向状に設けた回動アーム
（６）を回転駆動する駆動部（７）が設けてあり、また
柱体（２）の上部正面には、パノラマ撮影に必要な顎置
台（８）、額受部（１０）、下端に耳孔栓を有して顔面
を正立状態に規制する左右方向に移動可能な一対の規制
片（１））及び手持ハンドル（１２）が夫々配設しであ
る。また前記柱体（２）の上部側面には、長尺な固定ア
ーム（１３）が水平状に突設してあり、その先端部に、
セファロＪｉ影用フィルムを装着するフィルム保持板（
１４）と、セファロ撮影に必要な前記規制片（１））と
同機能をもつ規制片（１５）と、下端に眉間に当接する
当接片（１６） ’を有して顔面の前後方向の傾きを規
制する前後方向に移動可能な規制片（工６）とが夫々配
設されており、このセファロ用撮影部の下方には、椅子
（１７）が配置される。（１８）はレントゲン撮影スイ
ッチである。Embodiments Below, embodiments of the present application will be described in detail with reference to the drawings. Figure 1 shows the overall structure of a dental X-ray device equipped with a panoramic imaging mechanism that continuously images along the dental arch and a cephalometric imaging mechanism that partially images the dental arch. A column (2) and a chair (3) are installed at the front and rear positions above. At the top of the column (2), there is a rotary arm having an X-ray irradiation unit (4) at one end and a film rotation tube (5) containing a panoramic photographic film at the other end facing each other. A drive unit (7) is provided to rotate the column (6), and on the front of the upper part of the column (2) there is a chin rest (8) necessary for panoramic photography, a forehead holder (10), and an ear hole at the bottom end. A pair of regulating pieces (1) having plugs and movable in the left-right direction for regulating the face in an erect state and a hand-held handle (12) are respectively provided. Further, a long fixed arm (13) is horizontally protruded from the upper side of the column (2), and at its tip,
Film holding plate for attaching cephalo-Ji shadow film (
14), a regulating piece (15) that has the same function as the regulating piece (1)) necessary for cephalometric imaging, and a contacting piece (16)' that contacts between the eyebrows at the lower end, and is arranged in the anteroposterior direction of the face. Regulating pieces (6) movable in the front-rear direction for regulating the inclination are respectively arranged, and a chair (17) is arranged below the cephalometric imaging section. (18) is an X-ray photographing switch.
このように構成されたレントゲン撮影装置は公知であり
、パノラマ１最影の際には、被撮影者が椅子（３）に着
座すると共に、その顔面を、蒲置台（８）、額受部（１
０）及び一対の規制片（ＩＩ）によって柱体（２）の前
面に固定する。この状態で、駆動部（７）を駆動すると
、Ｘ線照射部（４）とフィルム回転筒（５）とが被撮影
者の頭部を中間にして、その廻りを歯列弓に近領する軌
跡に沿って回動し、かつ、フィルム回転筒（５）が自転
して、パノラマ１最影が行われる。An X-ray imaging apparatus configured in this manner is well known, and when the shadow of panorama 1 is reached, the person to be photographed is seated on the chair (3), and his/her face is placed between the support base (8), the forehead holder ( 1
0) and a pair of regulating pieces (II) to fix it to the front surface of the column (2). In this state, when the drive unit (7) is driven, the X-ray irradiation unit (4) and the film rotating barrel (5) will move around the subject's head close to the dental arch. The film rotation tube (5) rotates along the trajectory and rotates, and the first shadow of the panorama is produced.
またセファロ撮影の際には、回動アーム（６）を回動し
て、Ｘ線照射部（４）を、フィルム保持板（１４）と対
峙させ、かつ、被撮影者が椅子に着座すると共に、顔面
を、各規制片（１５）、 （１５）と（１６）により固
定する。この状態で、Ｘ線照射部（４）を作動すると、
Ｘ＆９は、スリットを介して顔面の側方に照射され、歯
列弓の側面部が撮影される。In addition, during cephalometric imaging, the rotating arm (6) is rotated so that the X-ray irradiation unit (4) faces the film holding plate (14), and when the subject is seated on a chair, , the face is fixed by each regulating piece (15), (15) and (16). In this state, when the X-ray irradiation section (4) is activated,
X&9 is irradiated to the side of the face through the slit, and the side part of the dental arch is photographed.
本願は上記したレントゲン撮影装置において、第２図で
示すように、被撮影者の軟組織の位置を検知する第１検
知手段（２０）と、軟組織板の位置を検知する第２検知
手段（２１）とを備え、第１検知手段（２０）による検
知出力に対する第２検知手段（２１）による検知出力と
を比較回路（２２）により比較し、その比較値に相当し
て、軟組織板を、駆動モータ（２３）により進退方向に
移動調整するように構成したもので、第３図は、第１検
知手段（２０）として、下端に被撮影者の眉間に当接す
る当接片（１６）’ を有した前後方向に移動可能な前
記規制片（１Ｇ）を利用した場合の実施例を示しており
、規制片（１６）は、前後方向に延びるスライド杆（２
５）の先端部に垂設され、このスライド杆（２５）は、
ランク（２６）と、ツマミ（２７）の操作によって回転
するピニオン（２８）とから成る水平調整機構部（２９
）によって前後方向位置が調整され、またこの水平調整
機構部（２９）は、図示しないがランクとピニオンとか
ら成る垂直調整機構部（３０）により上下方向に位置調
整されるスライド杆（３１）に装着しである。The present application provides the above-mentioned X-ray imaging apparatus, as shown in FIG. 2, which includes a first detection means (20) for detecting the position of the soft tissue of the subject and a second detection means (21) for detecting the position of the soft tissue plate. The comparison circuit (22) compares the detection output of the first detection means (20) with the detection output of the second detection means (21), and the soft tissue plate is moved by the drive motor according to the comparison value. (23) to adjust the movement in the forward and backward directions, and FIG. 3 shows a first detection means (20) having a contact piece (16)' at the lower end that comes into contact with the eyebrows of the subject. This shows an example in which the regulating piece (1G) is movable in the front-rear direction.
5), this slide rod (25) is
A horizontal adjustment mechanism section (29) consisting of a rank (26) and a pinion (28) that rotates by operating a knob (27).
), and this horizontal adjustment mechanism (29) is connected to a slide rod (31) whose position is adjusted in the vertical direction by a vertical adjustment mechanism (30) consisting of a rank and a pinion (not shown). It is installed.
そして本例において、前記水平調整機構部（２９）に、
例えばスライド可変抵抗器によって前記スライド杆（２
５）の前後方向の移動量を検知する検知素子（３２）が
設けられると共に、こめかみ位置の基準点から当接片（
１６）’ が眉間に当接したときのスライド杆（２５）
の水平移動量を表示する目盛が付設されている。In this example, the horizontal adjustment mechanism section (29) includes:
For example, the slide rod (2
A detection element (32) is provided to detect the amount of movement of the contact piece (5) in the front-rear direction, and a detection element (32) is provided for detecting the amount of movement of the contact piece (
16) Slide rod when it comes into contact with the eyebrows (25)
A scale is attached to display the amount of horizontal movement.
また第４図は、第１検知手段（２０）として、光学的手
段を用いた場合の他の実施例を示しており、該検知手段
（２０）は、左右一対の規制片（１５）、 （１５）を
左右方向に移動可能に構成した例えば実公昭５８−１２
１７］号公報に示された機構部（３０）に、例えばラン
クとツマミ（３１）の操作によって回転するピニオンと
から成る水平方向調整機構（３２）を介して側方に突出
した支持アーム（３３）の先端に、被撮影者のこめかみ
部に光を指向する発光部（３４）を設け、かつ、前記機
構部り３２）に、支持アーム（３３）を水平方向に調整
して、発光部（３４）よりの光線が、被撮影者のこめか
み部を照射したときの前記支持アーム（３３）の移動量
を検知する例えばスライド可変抵抗器或いはポテショメ
ータなどから成る検知素子（３５）が備えである。FIG. 4 shows another embodiment in which an optical means is used as the first detection means (20), and the detection means (20) consists of a pair of left and right regulating pieces (15), ( 15), which is configured to be movable in the left and right direction.
A support arm (33) that protrudes laterally is attached to the mechanism section (30) shown in the publication No. 17 through a horizontal adjustment mechanism (32) consisting of, for example, a rank and a pinion that rotates by operating a knob (31). ) is provided with a light emitting part (34) that directs light toward the temple of the subject, and the support arm (33) is horizontally adjusted on the mechanism part 32), and the light emitting part ( 34) is provided with a detection element (35) consisting of, for example, a sliding variable resistor or a potentiometer, which detects the amount of movement of the support arm (33) when the temple of the person to be photographed is irradiated with a light beam from 34).
さらにまたＸ線照射部（４）とセファロ撮影の被写者と
の間には、第２検知手段（２１）が装着される。Furthermore, a second detection means (21) is installed between the X-ray irradiation unit (4) and the subject for cephalometric imaging.
この第２検知手段（２１）は、第５図で示すように、可
逆可能な小形駆動モータ（２３）と、これにより駆動さ
れ、かつ、Ｘ線照射部（４）からのＸ線を透過する方形
状のスリット（３７）を有した遮蔽板（３８）の上方位
置で、水平に延びるネジ杆（３９）と、前記ス’Ｊ ソ
） （３７）の下方位置で前記ネジ杆（３９）と平行す
る案内杆（４０）と、上部に前記ネジ杆（３９）と螺合
する筒状の螺合部（４１）を、下部に前記案内杆（４０
）を摺動可能に嵌合する嵌合部（４２）を対設した例え
ばアルミニウムから成る軟組織板（４３）と、軟組織板
（４３）の移動量を検知する例えばスライド可変抵抗器
乃至ポテンショメータから成る検知素子（４４）とから
構成されている。As shown in FIG. 5, this second detection means (21) is driven by a small reversible drive motor (23) and transmits the X-rays from the X-ray irradiation section (4). A horizontally extending screw rod (39) is located above the shielding plate (38) having a rectangular slit (37), and a screw rod (39) is located below the shielding plate (37). Parallel guide rods (40), a cylindrical threaded part (41) that screws with the threaded rod (39) on the upper part, and the guide rod (40) on the lower part.
), and a soft tissue plate (43) made of aluminum, for example, and a sliding variable resistor or potentiometer for detecting the amount of movement of the soft tissue plate (43). It is composed of a detection element (44).
しかして、使用に際し、水平調整機構部（２９）により
、スライド杆（２５）乃至支持アーム（３３）が前後動
して当接片（１６） ’ を被撮影者の顔面の眉間に当
接させ或いは発光部（３４）からの光線が被撮影者のこ
めかみに照射させる。するとこめかみの基４−点に対す
るスライド杆（２５）乃至支持アーム（３３）の移動■
が検知素子（３２）によって検知され、この検知出力ｖ
１が比較回路（２２）に入力する。When in use, the slide rod (25) or the support arm (33) is moved back and forth by the horizontal adjustment mechanism (29) to bring the contact piece (16)' into contact with the glabella of the subject's face. Alternatively, the light beam from the light emitting section (34) is irradiated onto the temple of the person to be photographed. Then, the slide rod (25) or support arm (33) moves relative to the four base points of the temple.■
is detected by the detection element (32), and this detection output v
1 is input to the comparison circuit (22).
一方第２検知手段（２１）における軟組ｌａ板（４３）
の水平移動量は、検知素子（４４）により検知され、そ
の検知出力■２は、比較器（２２）に入力しており、こ
の検知出力Ｖ２と、前記第１検知手段（２０）における
検知出力■、とが比較回路（２２）により比較され、被
撮影者を実測したこめかみ位置と、軟組織板（４３）の
水平移動量との間に差が存するときは、比較回路（２２
）の出力信号により、その差が０になるまで、駆動モー
タ（２３）を駆動するものである。On the other hand, the soft laminated la board (43) in the second detection means (21)
The amount of horizontal movement of is detected by the detection element (44), and its detection output ■2 is input to the comparator (22), and this detection output V2 and the detection output of the first detection means (20) (2) are compared by the comparison circuit (22), and if there is a difference between the actually measured temple position of the photographed person and the horizontal movement amount of the soft tissue plate (43), the comparison circuit (22)
) drives the drive motor (23) until the difference between them becomes zero.
即ち検知出力■２が小さく、軟組織板（４３）により覆
われる領域が、被撮影者の実測上の軟組織部よりも不測
している場合には、比較回路（２２）から正の信号が出
力し、この信号により、軟組織板（４３）が前進する方
向に駆動モータ（２３）を駆動し、また検知出力Ｖ、に
対し、検知出力ｖ２が大きく、軟組織板（４３）により
覆われる領域が、被撮影者の実測上の軟Ｕｔａ部より越
えている場合には、軟組織板（４３）を、前記とは逆に
後退する方向に駆動モータ（２３）を駆動し、この駆動
は、検知出力Ｖ、＝Ｖｚとなって比較回路（２２）から
の出力が零となったとき停止する。That is, if the detection output (2) is small and the area covered by the soft tissue plate (43) is unexpectedly larger than the measured soft tissue part of the subject, a positive signal is output from the comparison circuit (22). , This signal drives the drive motor (23) in the direction in which the soft tissue plate (43) moves forward, and the detection output v2 is larger than the detection output V, and the area covered by the soft tissue plate (43) is If it exceeds the soft Uta part measured by the photographer, the drive motor (23) is driven in the direction of retracting the soft tissue plate (43) in the opposite direction to the above, and this drive is performed using the detection output V, = Vz and the output from the comparator circuit (22) becomes zero.
なお比較回路として中央処理装置を適用してもよいこと
は勿論である。It goes without saying that a central processing unit may be used as the comparison circuit.
発明の効果
本願は叙上のように構成されるものであるから、軟組織
の部分と、その他の部分との撮影フィルムにおける影像
の黒化度が均一に得られ、撮影精度を高めることができ
るという利点を有する。Effects of the Invention Since the present application is constructed as described above, it is possible to obtain a uniform degree of darkening of the image of the soft tissue part and other parts on the photographic film, and to improve the photographing accuracy. has advantages.
図面は本願の実施例を示すもので、第１図はレントゲン
撮影装置の総体斜視図、第２図は制御回路のブロック図
、第３図及び第４図は第１検知手段を示す部分図、第５
図は第２検知手段を示す部分図である。
図中、（２０）は第１検知手段、（２１）は第２検知手
段、（２２）は比較回路、（２３）は駆動モータ、（４
３）は軟組織板である。
特許出願人 株式会社吉田製作所
第２図
第５図The drawings show an embodiment of the present application, in which Fig. 1 is an overall perspective view of an X-ray imaging device, Fig. 2 is a block diagram of a control circuit, Figs. 3 and 4 are partial views showing the first detection means, Fifth
The figure is a partial view showing the second detection means. In the figure, (20) is the first detection means, (21) is the second detection means, (22) is the comparison circuit, (23) is the drive motor, and (4) is the comparison circuit.
3) is a soft tissue plate. Patent applicant Yoshida Seisakusho Co., Ltd. Figure 2 Figure 5
Claims (1)
知信号として出力する第１検出手段と、正逆回転の駆動
モータによって軟組織板をＸ線の照射領域で移動調整す
ると共に、その移動量を検知信号として出力する第２検
知手段と、前記第１検知手段の検知出力と、前記第２検
知手段の検知出力とを比較して、その比較信号により、
前記駆動モータを正逆方向に回転制御する比較回路とか
ら構成したことを特徴とする歯科用レントゲン装置にお
ける軟組織の位置設定装置。(1) A first detection means that actually measures the soft tissue position of the subject and outputs the measured value as a detection signal, and a drive motor that rotates in forward and reverse directions to move and adjust the soft tissue plate in the X-ray irradiation area. A second detection means that outputs the amount of movement as a detection signal, a detection output of the first detection means, and a detection output of the second detection means are compared, and based on the comparison signal,
A soft tissue positioning device in a dental X-ray device, comprising a comparison circuit that controls rotation of the drive motor in forward and reverse directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63001276A JP2588736B2 (en) | 1988-01-08 | 1988-01-08 | Soft tissue plate position setting device for dental radiograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63001276A JP2588736B2 (en) | 1988-01-08 | 1988-01-08 | Soft tissue plate position setting device for dental radiograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01178244A true JPH01178244A (en) | 1989-07-14 |
| JP2588736B2 JP2588736B2 (en) | 1997-03-12 |
Family
ID=11496936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63001276A Expired - Lifetime JP2588736B2 (en) | 1988-01-08 | 1988-01-08 | Soft tissue plate position setting device for dental radiograph |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2588736B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010214023A (en) * | 2009-03-18 | 2010-09-30 | Yoshida Dental Mfg Co Ltd | Head fixing device for dental x-ray radiographing apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI116269B (en) * | 2000-02-18 | 2005-10-31 | Ge Healthcare Finland Oy | Procedure for imaging the cephalo area |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177027A (en) * | 1983-01-07 | 1984-10-06 | インストルメンタリウム・オサケイ−テイエ− | Soft tissue filter apparatus |
| JPS60150733A (en) * | 1984-01-20 | 1985-08-08 | 株式会社モリタ製作所 | Dental total jaw x-ray photographing apparatus |
| JPS61238047A (en) * | 1985-04-15 | 1986-10-23 | Hitachi Medical Corp | X-ray snapshooting device |
-
1988
- 1988-01-08 JP JP63001276A patent/JP2588736B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177027A (en) * | 1983-01-07 | 1984-10-06 | インストルメンタリウム・オサケイ−テイエ− | Soft tissue filter apparatus |
| JPS60150733A (en) * | 1984-01-20 | 1985-08-08 | 株式会社モリタ製作所 | Dental total jaw x-ray photographing apparatus |
| JPS61238047A (en) * | 1985-04-15 | 1986-10-23 | Hitachi Medical Corp | X-ray snapshooting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010214023A (en) * | 2009-03-18 | 2010-09-30 | Yoshida Dental Mfg Co Ltd | Head fixing device for dental x-ray radiographing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2588736B2 (en) | 1997-03-12 |
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