WO2004080326A1 - Implant dentaire - Google Patents

Implant dentaire Download PDF

Info

Publication number
WO2004080326A1
WO2004080326A1 PCT/HU2003/000074 HU0300074W WO2004080326A1 WO 2004080326 A1 WO2004080326 A1 WO 2004080326A1 HU 0300074 W HU0300074 W HU 0300074W WO 2004080326 A1 WO2004080326 A1 WO 2004080326A1
Authority
WO
WIPO (PCT)
Prior art keywords
construction according
base member
implant
coronal
construction
Prior art date
Application number
PCT/HU2003/000074
Other languages
English (en)
Inventor
Csaba Árpád CZANIK
Gábor Sipos
Original Assignee
Czanik Csaba Arpad
Sipos Gabor
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
Priority claimed from HU0300612A external-priority patent/HU0300612D0/hu
Priority claimed from HU0301975A external-priority patent/HUP0301975A2/hu
Application filed by Czanik Csaba Arpad, Sipos Gabor filed Critical Czanik Csaba Arpad
Priority to AU2003267678A priority Critical patent/AU2003267678A1/en
Publication of WO2004080326A1 publication Critical patent/WO2004080326A1/fr

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

Definitions

  • the object of the invention is a dental implant construction comprising a base member, a coronal member, an end element and a groove, and the base member is supplied with a self- tapping thread.
  • a number of dental implants are known. Such constructions are presented e.g. in specifications WO 01/26579, WO 02/45610, patent specifications US 6,254,387, US 2002/0110783, US 2002/0177102 and US 2003/0031982, and specification WO 03/039390.
  • An implant is meant to be a plug-like construction built in the jaw-bone.
  • the known dental implants such as the constructions presented in the above specifications, can basically be classified in two groups in terms of their outer structure.
  • the first group includes the constructions that are placed using their outer thread.
  • a nest of the required size with smooth walls is formed in the jaw-bone, and then, after pre-tapping or via self-tapping - depending on the hardness of the bone -, the implant can be screwed in the nest in the bone. In this case there is no percussion-like unpleasant feeling. It is a disadvantage of this construction that pre-tapping and screwing the implant in is a lengthy process.
  • the second group includes constructions where the part of the implant to be built in the bone comprises no thread. These implants are built in a prepared nest in the bone by knocking it in. If the bone is soft or slightly hard, the implantation process is quick and causes no strong pain. It is a disadvantage of this construction that if the bone is hard, the implant can only be knocked in by applying strong beats, which is painful and extremely unpleasant for the client. This pain can not be soothed by giving preventive pain-killers, as it has the effect of a minor cerebral concussion.
  • WO 98/48726 describes a conical implant.
  • the implant has a blind hole suitable for fixing a post in it.
  • the construction comprises a cylindrical part at the bottom and a conical part above it.
  • a lacuna that is, a hole or cavity may be formed only in the bottom part.
  • the knocking in may cause pain, in case of a threaded version, the placement is time-consuming.
  • the threaded version can not be knocked in.
  • the placement of the implant is especially difficult in case of dense bone, as it requires significant force to screw the implant in. In this case the probability of malpractice is also significant, there is a risk of fracture or fissure of the bone.
  • the purpose of the invention is to eliminate the drawbacks of the known constructions, and to develop an implant with an outer geometry making it possible to either screw or knock in the implant depending on the actual hardness of the bone, which may vary with the depth. It is an object that the placement of the implant should be quick and painless. It is also an object that the implant built in should be fixed firmly at its place.
  • the most general embodiment of the dental implant construction according to the invention is formed in a way that the self-tapping thread is situated along a guide curve of spiral teeth increasing the stability and suitable for being knocked in, and the edge of the axial section of the spiral tooth is at least approximately orthogonal to the longitudinal axis, and there are 2-6, preferably three lacunae, preferably with the cross section of a sector formed in the coronal member.
  • Figure 1 is a lateral view of the construction
  • FIG. 1 is section A - A shown in figure 1
  • Figure 3 is a 3D perspective drawing of the construction
  • Figure 4 is the lateral view of the enveloping body of the construction
  • Figure 5 is a draft of manufacturing the construction
  • Figure 6 is a draft of the guide curve.
  • Figure 1 shows the base member 1, the coronal member 2, the end element 3, the lacuna 4, the groove 5, the abutment 6, the longitudinal axis 7, the edge 9a and the thread 10a.
  • the abutment 6 improves the fixing of the implant and reduces lateral tilting.
  • the abutment 6 prevents the implant from displacement or descending when biting.
  • the surface of the end element 3 is polished, smooth and featureless, its enveloping body is a truncated cone, and its minimum diameter is bigger than the maximum diameter of the coronal member 2.
  • the end element 3 closes the tooth nest, therefore this part has the largest diameter.
  • the surface of the base member 1 and the coronal member 2 is rough. The rough surface enhances adherence to the bone. Any kind of known inside design can be formed inside the construction according to the invention.
  • Figure 2 shows the base member 1, the groove 5 and the spiral tooth 9.
  • the grooves 5 have a side 5a and a side 5b, which are orthogonal to each other. With this geometry the longitudinal groove 5 prevents the implant from angular motion after it has been placed, that is, it prevents the implant from getting deeper due to angular motion.
  • Figure 3 shows a perspective view of the base member 1, the coronal member 2, the end element 3, the lacuna 4, the longitudinal groove 5, the abutment 6, the spiral tooth 9 and the sector 11.
  • the cross section of the lacuna 4 of given geometry is a sector 11.
  • the lacuna 4 is situated in the coronal member 2, a small portion of it may extend into the transitional zone towards the base member 1.
  • a cylinder-sector is removed from the coronal member 2.
  • the cavity of the lacuna 4 comprises a cornered hole of 0,3 - 1 mm size.
  • the lacuna 4 prevents the implant from untwisting.
  • the lacuna 4 is situated above the threaded part.
  • the inside surface of the lacuna 4 is also roughened.
  • the bone grown into the lacuna 4 prevents the implant from tilting, too.
  • the spiral tooth 9 increases stability.
  • the distance between the upper edge of the lacuna 4 and the end element 3 is minimum 1 mm.
  • the base member 1 is conical, its cone increases until diameter "d", its cone angle ⁇ is between 5° and 25°, and it is connected to the abutment 6 with rounded edges.
  • the coronal member 2 is also conical, but it has a smaller cone angle between 0,5° and 8°.
  • the length of the base member 1 and the coronal member 2 varies, it is adjusted to the client, whereas the length of the end element 3 is only 1 - 2 mm.
  • Figure 5 shows the base member 1, the longitudinal axis 7, the guide curve 10 and the triangle 8.
  • the guide curve 10 starts from the cervical end after a turn of 360°, and helically leads to the coronal member 2.
  • the pitch "h" of the spiral is constant, but certainly there must be implants of different pitch in a medical set.
  • the length of the longer side of triangle “A” cutting out the longitudinal section of the spiral tooth 9 equals to the pitch "h" of the spiral tooth 9, whereas its smaller side is orthogonal to the longitudinal axis 7, and it is at least 0,5 mm high. If the triangle "A" is swept along the guide curve 10, it cuts the shape of the spiral tooth 9 from the enveloping body, as it can be seen in figure 6 as well. This is the way we get the spiral tooth 9.
  • This geometry increases the stability of the implant, especially in the period until the bone grows into the lacuna 4.
  • the dental implant construction according to the invention has a plenty of advantages.
  • the outer geometry of the implant makes it possible to either screw or knock in the implant depending on the actual hardness of the bone, which may vary with the depth. In the course of its placement, it is knocked in the bone where the bone is soft. If a hard part of the bone is reached, the implant is screwed. This way the placement of the implant is quick and painless.
  • the implant built in is fixed firmly due to its abutment and its special spiral teeth. After ossification, the lacunae increase stability and prevents the implant from falling out.
  • the construction can be used in jaw bones of any hardness, so the dentist or dental -surgeon needs to keep only one kit. From the economic point of view it is very important. The dentist need not decide it at the beginning of the operation what type of implant to build in, as it is not necessary with the implant according to the invention.

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)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un implant dentaire comprenant une base (1), une couronne (2), un élément d'extrémité (3) et une rainure (5), la base (1) comportant un filet autotaraudeur (10a). L'invention se caractérise par le fait que ce filet autotaraudeur (10a) est situé le long de la courbe de guidage (10) de la denture hélicoïdale (9), ce qui augmente la stabilité de l'implant et permet d'enfoncer l'implant, par le fait que le bord (9a) de la section axiale de la denture hélicoïdale (9) est au moins approximativement perpendiculaire à l'axe longitudinal (7) de l'implant, et par le fait que l'implant comporte deux à six et de préférence trois trous (4) formés de préférence avec la section transversale d'un secteur (11) de la couronne (2).
PCT/HU2003/000074 2003-03-10 2003-09-29 Implant dentaire WO2004080326A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003267678A AU2003267678A1 (en) 2003-03-10 2003-09-29 Dental implant construction

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
HU0300612A HU0300612D0 (en) 2003-03-10 2003-03-10 Dental implant with "lakuna" system
HUP0300612 2003-03-10
HU0301975A HUP0301975A2 (hu) 2003-06-27 2003-06-27 Fogászati implantátumszerkezet
HUP0301975 2003-06-27

Publications (1)

Publication Number Publication Date
WO2004080326A1 true WO2004080326A1 (fr) 2004-09-23

Family

ID=89981465

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU2003/000074 WO2004080326A1 (fr) 2003-03-10 2003-09-29 Implant dentaire

Country Status (2)

Country Link
AU (1) AU2003267678A1 (fr)
WO (1) WO2004080326A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468200A (en) * 1982-11-12 1984-08-28 Feldmuhle Aktiengesellschaft Helical mandibular implant
WO1997001306A1 (fr) * 1995-06-27 1997-01-16 Beaty Keith D Implant dentaire monobloc mono-etage et systeme d'implant dentaire mono-etage
US5601429A (en) * 1995-08-11 1997-02-11 Blacklock; Gordon D. Dental implant anchor
US5785525A (en) * 1996-05-17 1998-07-28 Weissman; Bernard Dental implant system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468200A (en) * 1982-11-12 1984-08-28 Feldmuhle Aktiengesellschaft Helical mandibular implant
WO1997001306A1 (fr) * 1995-06-27 1997-01-16 Beaty Keith D Implant dentaire monobloc mono-etage et systeme d'implant dentaire mono-etage
US5601429A (en) * 1995-08-11 1997-02-11 Blacklock; Gordon D. Dental implant anchor
US5785525A (en) * 1996-05-17 1998-07-28 Weissman; Bernard Dental implant system

Also Published As

Publication number Publication date
AU2003267678A1 (en) 2004-09-30

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