• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a rotary follower adapted for the cold filling of a root canal, comprising: an active zone comprising a heel and a tip, the active zone having a generally cone shape with an outer surface that is smooth, a diameter a section of the active zone near the tip being smaller than a diameter of a section of the active zone in the vicinity of the heel, and - an end section adjacent to the heel of the active zone, the section of end comprising means for connecting to a mandrel of a mechanical rotary drive device. Application to the dental field.
    公开号:CH705170B1
    申请号:CH02066/12
    申请日:2011-04-18
    公开日:2016-03-31
    发明作者:Jean-François Peli；Julien Mordeniz
    申请人:Micro Mega Int Mfg Sa；
    IPC主号:
    专利说明:

    Technical field and state of the art
    The invention relates to a rotary follower adapted for closing a root canal.
    The treatment of a dental root whose tissue is damaged is to extract the pulp, shape the channel and then close the treated channel with a filling material such as Gutta-percha, pasta and / or sealing cements.
    The shaping of the channel is obtained by successive and sequenced passages of reamer-type channel instruments having different geometric characteristics (tip diameter, taper, no helical cutting lips, shape of the section, etc. .). After shaping, the resulting channel is curved, conical. The smallest diameter is at the apex and the largest diameter at the pulp floor. The apical zone (commonly referred to as 1/3 apical) of the canal is the narrowest zone, it is situated in the vicinity of the apex and extends over approximately one-third of the total length of the canal. more difficult to access. The coronary zone (commonly called the coronary 2/3) of the canal extends between the apical zone and the pulpal floor, about two thirds of the total length of the canal.
    [0004] Different sealing techniques exist, in particular cold lateral compaction and vertical hot compaction. Lateral compaction consists in cold compacting with a follower a Gutta-percha master cone which must descend to the end of the apical zone. After removal of the follower, an accessory cone is inserted into the space released by the follower and then compacted. The actions of insertion of an accessory cone and compaction of said accessory cone are repeated until complete closure of the root canal. Vertical hot compaction consists in compacting a master cone of Gutta-percha with the aid of a follower in the apical zone, the follower and / or the Gutta-percha cone being preheated (s). The coronal area is then identically filled with larger diameter end mills and accessory Gutta-percha cones. In both cases, the practitioner uses a manual plunger, or a series of manual grinders of increasing diameter. By pushing the crusher inside the channel to be filled, the Gutta-percha is pushed back to the bottom and on the walls of the canal.
    These shutter techniques are easy to master for practitioners but long to implement. The closure of the channel must indeed be particularly careful, especially at the apical zone, difficult to access and narrow, to create a mechanical sealing area at the apex. In addition, the pressure applied to the walls and the bottom of the channel must be controlled throughout the compacting operation in order not to damage the walls of the channel and not to cause an apical overtaking, that is to say say a diffusion of the filling material beyond the apex of the channel. Also, the different cones of Gutta must be perfectly welded to guarantee the mechanical seal.
    Description of the invention
    The invention proposes a new gland not all or some of the disadvantages or difficulties of known techniques.
    More specifically, the invention provides a rotary follower particularly well suited for the implementation of a closure method of a root canal comprising a step of cold compaction of a filling material cone. The crusher according to the invention comprises:an active zone comprising a heel and a tip, the active zone having a general cone shape with an outer surface that is smooth, a diameter of a section of the active zone in the vicinity of the tip being less than a diameter of a section the active zone in the vicinity of the heel, andan end section adjacent to the heel of the active zone, the end section comprising means for connecting to a mandrel of a mechanical rotary drive device.
    The general cone shape facilitates the insertion of the follower inside the channel. The smooth outer surface of the gland prevents damage to the canal walls.
    The gland connection means allows its use with a handpiece or a contra-angle for a drive in mechanical rotation. The rotational movement allows a better application of the filling material against the side walls of the channel. The rotational movements are thus better controlled, more regular, without the particular effort of the practitioner.
    Moreover, the energy generated by friction of the follower in rotation against the filling material warms the filling material which is thus made more fluid. The filling material can thus more easily and more effectively be pushed back to the bottom of the apical canal and against the walls of the root canal. In addition, the preliminary heating of the filling material becomes unnecessary. Furthermore, since the friction energy transmitted to the filling material is a function of the rotational speed of the follower, the practitioner can easily adjust the rotational speed as a function of the desired fluidity for the filling material.
    The tip of the follower may have a flat end, ogival or conical. A flat end limits the risk of damage to the apex when the follower is used to compact the 1/3 apical. An ogival or conical end facilitates the compaction of an accessory cone in the space left free by the removal of the follower used for compacting the previous cone.
    A crusher according to the invention can be used in the same situations as a manual plunger having an identical active part (same length, same taper, etc.): they can penetrate the channels at the same depths to compact the master cone and accessory cones; the spaces left free (and to be filled by the accessory cones) after removal of the follower are the same.
    But surprisingly, the crusher according to the invention, used at a rather low speed of rotation compared to the speeds commonly used in this area, particularly for the preparation of the apical channel, of the order of 100 to 1000 revolutions per minute. minute gives much better results than a manual muffler with an identical active part. For example, experience shows that the force to be exerted on the follower rotating at about 300 to 600 revolutions / minute to go down in the apical third and to crush and compact a cone of Gutta in the 1/3 apical is of the order 0.3 kg, while it is of the order of 1.5 kg for a manual crusher. The lower pressure greatly limits the risk of damage to the walls and the apex of the channel, and facilitates the use of the gland. Also, the thermomechanical effect of softening the filling material by a follower according to the invention facilitates the crushing and molding of the master cone on the limits of the channel. Again, the thermomechanical effect of the rotary follower according to the invention increases the cohesion of the master cone and accessory cones, especially in the 1/3 apical.
    DESCRIPTION OF THE EMBODIMENT OF THE INVENTION SHOWN IN THE FIGURES
    The invention will be better understood, and other features and advantages of the invention will become apparent in the light of the following description of two embodiments of rotary tumblers according to the invention, respectively shown in Figs. 1 and 2 .
    The crushers of FIGS. 1, 2 each include:an active zone 1 comprising a heel 2 and a tip 3; the active zone 1 has a general cone shape with a smooth outer surface, a diameter of a section of the active zone in the vicinity of the tip being less than a diameter of a section of the active zone in the vicinity of the heel, andan end section 4 adjacent to the heel 2 of the active zone 1.
    The general cone shape of the active zone has a taper of for example between 0 and 10%. A kit comprising increasers of increasing conicity can also be realized.
    According to the invention, the outer surface of the active zone is perfectly smooth: it has no cutting lip, no boss, no hollow, no roughness of any shape whatsoever. Thus, when the follower is rotated and when its surface touches the inner surface of the channel to be closed, the follower does not damage the channel wall.
    On the follower of FIG. 1, the end portion 4 is terminated by a handle 5 for gripping the hand of the follower, and the tip 3 is flat. On the follower of fig. 2, the end section 4 is terminated by connection means 6 to a mandrel (not shown) of a mechanical rotating drive, and the tip is ogival.
    The crushers are made of a flexible and mechanically resistant material, for example nickel-titanium, steel or composite material.
    权利要求:
    Claims (4)
    [1]
    A rotary tumbler adapted for filling a root canal, comprising:An active zone (1) comprising a heel (2) and a tip (3), the active zone having a generally cone-shaped shape whose outer surface is smooth, a diameter of a section of the active zone in the vicinity of the tip being less than a diameter of a section of the active zone in the vicinity of the heel, and- An end section (4) adjacent the heel (3) of the active zone (1), the end section comprising a connection means (6) to a mandrel of a mechanical rotating drive device.
    [2]
    The ram of claim 1, wherein the tip (3) has a flat, ogival or conical end.
    [3]
    3. Stroller according to one of the preceding claims, wherein the active zone (1) has a taper of between 0 and 10%.
    [4]
    4. Pusher according to one of the preceding claims, made of nickel-titanium, steel or composite material.
    类似技术:
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    BE1018624A3|2011-05-03|REVERSIBLE DENTAL PROSTHESIS SEALING SYSTEM.
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    同族专利:
    公开号 | 公开日
    WO2011131895A1|2011-10-27|
    FR2959115B1|2012-06-08|
    DE112011101393T5|2013-03-07|
    FR2959115A1|2011-10-28|
    US20130022940A1|2013-01-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5605460A|1995-04-26|1997-02-25|Tulsa Dental Products, L.L.C.|Endodontic instrument and procedure|
    JP3936837B2|2000-11-09|2007-06-27|株式会社モリタ製作所|Dental filler and dental loader|
    KR100921305B1|2003-09-05|2009-10-13|레너드 스티븐 뷰캐넌|Improved obturators|
    FR2951631B1|2009-10-26|2012-06-08|Micro Mega Int Mfg Sa|RADICULAR CHANNEL TREATMENT INSTRUMENT|USD837376S1|2016-12-15|2019-01-01|Moji Bagheri|Endodontic tool|
    CN107468356A|2017-08-29|2017-12-15|孙艳平|A kind of elastic surgical mallet|
    CN107684462A|2017-08-29|2018-02-13|孙艳平|One kind has elastic and rigid surgical mallet concurrently|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR1053108A|FR2959115B1|2010-04-23|2010-04-23|METHOD FOR SEALING A RADICULAR CHANNEL AND A ROTARY FOLDER SUITABLE FOR THE IMPLEMENTATION OF THE METHOD|
    PCT/FR2011/050881|WO2011131895A1|2010-04-23|2011-04-18|Method for sealing a root canal, and rotary plugger for carrying out the method|
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