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WO2010105965A1 - Implant dentaire à introduction axiale destiné à fournir une distraction de crête - Google Patents

Implant dentaire à introduction axiale destiné à fournir une distraction de crête Download PDF

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Publication number
WO2010105965A1
WO2010105965A1 PCT/EP2010/053113 EP2010053113W WO2010105965A1 WO 2010105965 A1 WO2010105965 A1 WO 2010105965A1 EP 2010053113 W EP2010053113 W EP 2010053113W WO 2010105965 A1 WO2010105965 A1 WO 2010105965A1
Authority
WO
WIPO (PCT)
Prior art keywords
implant
implant according
millimeter
lower portion
shape
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.)
Ceased
Application number
PCT/EP2010/053113
Other languages
English (en)
Inventor
Gérard Scortecci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2010105965A1 publication Critical patent/WO2010105965A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A61C8/0025—Self-screwing with multiple threads

Definitions

  • the present invention relates to a dental implant for axial insertion to provide a crestal distraction.
  • standard expanders are not particularly suited for the implant to be anchored, and no inspection enables the size of the receiving bed to be determined in relation to the implant to prevent excessive widening of the bone ridge.
  • a poorly managed expansion may be considered traumatizing and counterproductive in terms of the objective sought, which is to improve the volume and structure of the receiving bone bed. There is therefore a need to improve the dental surgery tools used for bone ridge distraction.
  • the present invention relates to a dental implant for axial insertion by limiting the use of expansion tools.
  • the dental implant for axial insertion comprises an upper essentially conical distraction portion provided with a microthread, and a lower portion provided with a macrothread.
  • the lower portion preferably performs the task of anchoring the implant, whilst the upper portion is configured to exert an action of distraction of the bone ridge.
  • the microthread provides optimum contact with the bone for a traumatism of perfectly distributed forces, thus avoiding the concentration of stresses that could damage the bone. Because of the simultaneity of the expansion and implantation stages, the surgical operating time is reduced whilst its safety, and hence its reliability, are increased. There is no longer any risk of excessive expansion relative to the implant.
  • the upper section provided with the microthread represents more than 50%, preferably from 50 to 65%, of the total height of the implant and this, combined with a microthread of a predetermined depth of the order of 0.05 to 0.13 millimeter, allows progressive distraction and surprisingly satisfactory anchorage of the implant.
  • the implant according to the invention exhibits particularly satisfactory maintenance qualities despite a lower portion provided with the macrothread intended for anchorage limited to less than half the height of the implant, more preferably of the order of one third of the height.
  • the implant comprises a self-drilling section arranged in the lower section of the lower portion. This self-drilling section shapes the receiving bed of the implant whilst allowing optimum evacuation of the bone debris to prevent jamming of the receiving bed.
  • the whole, consisting of the lower and upper portions and the drilling section, is preferably essentially in the shape of a right circular cone. This right circular cone shape is particularly effective for distraction of the bone ridge in that it acts as a wedge.
  • the conical surfaces it is advantageous for the conical surfaces to be continuous, without any discontinuity in diameter, thereby facilitating the smooth insertion of the implant. Furthermore, the applicant noticed that this continuity gave rise to progressive expansion, thus enabling the elasticity of the bone ridge to be taken into consideration. There is no longer any risk of accidental fracture or cracking.
  • the present invention relates to a dental implant for axial insertion characterized in that it comprises at least one upper essentially conical distraction portion provided with a microthread, and at least one lower portion provided with a macrothread.
  • the implant is designed so that:
  • the conical shape of the upper portion and/or the lower portion is a right circular cone, - the lower portion is connected to the upper portion of distraction without any discontinuity in diameter,
  • the device has at least partially a mirror polished surface condition
  • the device comprises a cylindrical collar surmounting the upper distraction portion, - the cylindrical collar has a mirror-polished surface,
  • the microthread has a depth of between 0.05 millimeter and 0.13 millimeter
  • the macrothread has a depth of between 0.2 millimeter and 0.4 millimeter
  • the microthread has a pitch of between 0.15 and 0.35 millimeter and a thread flank angle of between 50° and 70°
  • the macrothread has a pitch of between 0.70 and 1 millimeter and a thread flank angle of between 20° and 40°
  • the upper portion represents at least approximately 50% of the height of the implant
  • the device has a nano-rough surface condition on at least one section of its outer surface, - asperities are formed by sanding with glass grains,
  • the roughness average Ra is between 0.9 micrometer and 0.7 micrometer
  • the device comprises a cavity emerging into the upper section of the implant
  • the cavity is provided with inner threading
  • - part of the height of the cavity has an internal polygonal shape, - the inner threading is arranged below the internal polygonal shape.
  • Figure 1 shows, on its right, a general view of the implant and on its left a longitudinal section of the implant.
  • Figure 2 shows a longitudinal section of the envelope of the implant without threading.
  • Figure 3 shows a perspective view of the implant.
  • Figures 4 and 5 are detailed views of the microthread and macrothread respectively.
  • Figure 6 shows the self-drilling section of the implant.
  • Figure 7 shows a top view of the implant.
  • the implant according to the invention is intended to be inserted in a vertical axial direction in the bone ridge of the jaw of a patient awaiting a denture. It rotates independently whilst it is being inserted.
  • the lower end 13 of the implant is understood to be the end that first penetrates the receiving bed and is buried to the greatest depth in the bone ridge.
  • the upper end 12 of the implant is the end that is closest to the surface of the receiving bed.
  • the implant is advantageously manufactured of titanium without welding or addition.
  • the implant comprises an upper distraction portion 1 and a lower portion 2.
  • Upper portion 1 is essentially conical in shape and provided with a microthread 3.
  • Lower portion 2 is provided with a macrothread 4.
  • Lower portion 2 is advantageously intended to anchor the implant in the bone ridge, whilst upper portion 1 is intended to expand the bone ridge, i.e. widen it. Thanks to this upper portion 1 the implant acts as an expansion wedge.
  • Microthread 3 arranged on upper portion 1 , conical in shape, allows progressive expansion of the bone ridge without jolting, which enables it to act on the elasticity of the jawbone without damaging it.
  • Microthread 3 preferably has a pitch of the order of
  • microthread 3 shown is characterized by a pitch of 0.25 millimeter for a thread flank angle of 60°.
  • the depth of the thread is preferably between 50 micrometers and 130 micrometers, advantageously of the order of 70 micrometers.
  • the shape of the thread of microthread 3 is preferably of the symmetrical trapezoidal type.
  • Lower portion 2 is preferably essentially conical in shape. Therefore all upper 1 and lower portions 2 are conical in shape.
  • the conical shapes are advantageously right circular cones that facilitate the insertion of the implant whilst rotating.
  • the cones are arranged with the vertex directed towards the lower end of the implant.
  • upper portion 1 is connected to lower portion 2 without discontinuity of diameter, thus allowing continuity of the displacement of the implant in the receiving bed.
  • Upper portion 1 and lower portion 2 have the same conicity.
  • the angle of divergence of upper portion 1 is identical to that of lower portion 2, with the exception of self-drilling section 9. This angle is between 4 and 15°, preferably of the order of 5°.
  • upper 1 and lower 2 portions are directly connected to each other.
  • a conical or cylindrical median zone may be arranged between upper portion 1 and lower 2 portion.
  • Macrothread 4 enables the receiving bed to be pushed and generates slight compression of the bone of the receiving bed, thus allowing correct wedging and anchorage of the implant.
  • the macrothread preferably has a pitch of the order of 0.70 millimeter to 1 millimeter and a thread flank angle of between 20° and 40°.
  • Macrothread 4 shown in Figures 1 and 5, is characterized by a pitch of 0.84 millimeter and a thread flank angle of 30°.
  • the depth of the thread is preferably between 200 micrometers and 400 micrometers, preferably of the order of 300 micrometers.
  • macrothread 4 is advantageously of the symmetrical trapezoidal type. Microthread 3 and macrothread 4 are preferably continuous. As shown in Figure 1 there is therefore no discontinuity in threading between upper portion 1 and lower 2 portion.
  • Microthread 3 generates a controlled axial displacement in rotation of the implant for progressive widening of the bone ridge. Moreover, the presence of this threading increases the surface of contact between the biological tissues and the implant, thus improving the fixation of the implant and stimulating bone regeneration.
  • Lower portion 2 advantageously comprises a self-drilling section 9 in its lower section.
  • This self-drilling section 9 comprises cutting edges 10, advantageously three in number, more precisely arranged at 120° from each other.
  • This self-drilling section 9 facilitates the introduction of the implant in the receiving bed by shaping it. The orientation of these cutting edges 10 feeds the debris and other irrigation fluids to the outside of the hole in the receiving bed, thus avoiding all risk of jamming.
  • the implant advantageously comprises a cylindrical collar 6.
  • This cylindrical collar 6 has a mirror polished surface condition.
  • Cylindrical collar 6 is advantageously in the mirror polished surface condition on its axial outer surface 11.
  • the radial upper surface of cylindrical collar 6 may also have a mirror polished surface condition.
  • the term mirror polished refers to the surface property of a material capable of reflecting light radiation because of its low roughness.
  • the mirror polished surface condition of cylindrical collar 6 on its axial and/or radial periphery contributes to atraumatic positioning of the implant on the bone ridge. In fact, it is preferably at the level of cylindrical collar 6 that the implant emerges from the bone ridge. Therefore the mirror polished surface condition which has a very low roughness, as described above, is atraumatic because it causes no damage, tearing or abrasion of the surrounding biological tissues. The upper section of the bone ridge is therefore intact and will readily heal.
  • the implant comprises a cavity 5 emerging into the upper section of the implant.
  • cavity 5 emerges into the upper part of upper portion 1 or into the upper section of cylindrical collar 6.
  • Cavity 5 preferably extends throughout upper portion 1.
  • This cavity 5 has at least partially an internal polygonal shape, e.g. octagonal, preferably at the level of cylindrical collar 6.
  • This octagonal shape 8 advantageously constitutes a zone of engagement of the driving means of the rotating implant used for its placement.
  • cavity 5 may be provided with an inner thread 7.
  • Inner thread 7 is preferably arranged more deeply into cavity 5 than octagonal shape 8.
  • Inner thread 7 contributes, for example, to fixing a denture.
  • upper portion 1 represents at least 50% of the height of the implant, and in particular between 50% and 65%.
  • the bone distraction is carried out deep into the bone ridge, thus enabling the entire height of the bone ridge to be acted upon. Moreover, the anchorage of the implant is still satisfactory.
  • the implant is advantageous to arrange for the implant to be self-tapping over its entire height, again enabling the number of tools to be used to be limited. In fact, it is not necessary, with the implant according to the invention, to tap the receiving bed before placement.
  • the implant has a nano-rough surface, at least on upper portion 1 , and possibly on upper 1 and lower 2 portions.
  • the arithmetic average roughness Ra is preferably between 0.7 micrometer and 0.9 micrometer, more precisely 0.8 micrometer.
  • asperities are formed on the surface of the implant after its production. These asperities are preferably produced by sanding with glass grains of a size of between 100 and 200 micrometers. This nano-roughness is highly advantageous to allow the osteo-reconstruction of the bone ridge. In fact, these asperities allow the positioning of stem cells, and hence the bone regeneration of the biological tissue surrounding the implant.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Dental Prosthetics (AREA)

Abstract

La présente invention porte sur un implant dentaire à introduction axiale, caractérisé en ce qu'il comprend au moins une partie de distraction supérieure (1) de forme fondamentalement conique, comportant un microfil (3) dont la profondeur varie de 0,05 à 0,13 millimètre, et au moins une partie inférieure (2) comportant un macrofil (4), la partie supérieure (1) représentant 50 % à 65 % de la hauteur de l'implant. L'application souhaitée de l'invention s'applique au domaine de la chirurgie dentaire, en particulier pour l'ajustement d'une denture chez des patients édentés ayant une crête d'os étroite.
PCT/EP2010/053113 2009-03-16 2010-03-11 Implant dentaire à introduction axiale destiné à fournir une distraction de crête Ceased WO2010105965A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0951654 2009-03-16
FR0951654A FR2942952B1 (fr) 2009-03-16 2009-03-16 Implant dentaire a insertion axiale assurant une distraction crestale
US16120609P 2009-03-18 2009-03-18
US61/161,206 2009-03-18

Publications (1)

Publication Number Publication Date
WO2010105965A1 true WO2010105965A1 (fr) 2010-09-23

Family

ID=41210451

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/053113 Ceased WO2010105965A1 (fr) 2009-03-16 2010-03-11 Implant dentaire à introduction axiale destiné à fournir une distraction de crête

Country Status (2)

Country Link
FR (1) FR2942952B1 (fr)
WO (1) WO2010105965A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012002636U1 (de) * 2011-11-07 2013-02-08 Biomed Est. Schraubenimplantat für einen Kieferknochen mit koronalem Kompressionsgewinde und apikalem Selbstschneidgewinde
WO2014091345A3 (fr) * 2012-12-10 2014-11-06 Ribaxx Ag Implant dentaire présentant un microfilet et d'un macrofilet
US20160166359A1 (en) * 2013-07-17 2016-06-16 Bego Implant Systems Gmbh & Co., Kg Dental implant with coronal groove structure
DE102016000167A1 (de) 2016-01-12 2017-07-13 Bernd Milbrodt Zahnimplantat mit einem Mehrfachgewinde
CN111372532A (zh) * 2017-06-19 2020-07-03 阿德万有限公司 骨内牙科植入物
RU2766753C2 (ru) * 2017-12-18 2022-03-15 Антожир Зубной имплантат с частичным проникновением через слизистую оболочку и протезный узел, содержащий такой имплантат

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2543294C2 (ru) * 2010-03-03 2015-02-27 ПЕРЕС Луис Маурисио ЧИКИЛЬО Штифт имплантата с множественной конусностью

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009717A1 (fr) * 1992-10-28 1994-05-11 Astra Aktiebolag Appareil de fixation pour systeme d'implant dentaire
US5816812A (en) * 1994-07-22 1998-10-06 Osteomed Corporation Dental implant fixture
WO2000003657A1 (fr) * 1998-07-17 2000-01-27 Astrazeneca Ab Implant
WO2003015654A1 (fr) * 2001-08-15 2003-02-27 Astra Tech Ab Implant, agencement comprenant un implant, et procede d'insertion dudit implant dans un tissu osseux
US20040170947A1 (en) * 2003-02-27 2004-09-02 Milne Robert H. Dental implant and bone regeneration device and method of implementation
US20050037319A1 (en) * 2003-08-11 2005-02-17 Bulard Ronald A. Dental implant system
DE102004063893A1 (de) * 2004-09-08 2006-04-20 Axel Dr. Kirsch Enossales Einzelzahnimplantat mit verbesserter Gewebeintegrationsfähigkeit
EP1757245A1 (fr) * 2005-08-22 2007-02-28 Novident SA Implant dentaire
EP1870054A2 (fr) * 2006-06-12 2007-12-26 Vilardell Purti, S.A. Implant dentaire

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009717A1 (fr) * 1992-10-28 1994-05-11 Astra Aktiebolag Appareil de fixation pour systeme d'implant dentaire
US5816812A (en) * 1994-07-22 1998-10-06 Osteomed Corporation Dental implant fixture
WO2000003657A1 (fr) * 1998-07-17 2000-01-27 Astrazeneca Ab Implant
WO2003015654A1 (fr) * 2001-08-15 2003-02-27 Astra Tech Ab Implant, agencement comprenant un implant, et procede d'insertion dudit implant dans un tissu osseux
US20040170947A1 (en) * 2003-02-27 2004-09-02 Milne Robert H. Dental implant and bone regeneration device and method of implementation
US20050037319A1 (en) * 2003-08-11 2005-02-17 Bulard Ronald A. Dental implant system
DE102004063893A1 (de) * 2004-09-08 2006-04-20 Axel Dr. Kirsch Enossales Einzelzahnimplantat mit verbesserter Gewebeintegrationsfähigkeit
EP1757245A1 (fr) * 2005-08-22 2007-02-28 Novident SA Implant dentaire
EP1870054A2 (fr) * 2006-06-12 2007-12-26 Vilardell Purti, S.A. Implant dentaire

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012002636U1 (de) * 2011-11-07 2013-02-08 Biomed Est. Schraubenimplantat für einen Kieferknochen mit koronalem Kompressionsgewinde und apikalem Selbstschneidgewinde
WO2014091345A3 (fr) * 2012-12-10 2014-11-06 Ribaxx Ag Implant dentaire présentant un microfilet et d'un macrofilet
AT14617U1 (de) * 2012-12-10 2016-02-15 Ribaxx Ag Dentalimplantat mit einem Mikro- und einem Makrogewinde
US20160166359A1 (en) * 2013-07-17 2016-06-16 Bego Implant Systems Gmbh & Co., Kg Dental implant with coronal groove structure
DE102016000167A1 (de) 2016-01-12 2017-07-13 Bernd Milbrodt Zahnimplantat mit einem Mehrfachgewinde
EP3192470A1 (fr) 2016-01-12 2017-07-19 Bernd Milbrodt Implant dentaire comprenant un filetage a filets multiples
CN111372532A (zh) * 2017-06-19 2020-07-03 阿德万有限公司 骨内牙科植入物
RU2766753C2 (ru) * 2017-12-18 2022-03-15 Антожир Зубной имплантат с частичным проникновением через слизистую оболочку и протезный узел, содержащий такой имплантат

Also Published As

Publication number Publication date
FR2942952B1 (fr) 2012-05-18
FR2942952A1 (fr) 2010-09-17

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