Dentistry – Prosthodontics – Holding or positioning denture in mouth
Patent
1998-05-28
2000-09-19
Wilson, John J.
Dentistry
Prosthodontics
Holding or positioning denture in mouth
433172, A61C 800
Patent
active
061202924
DESCRIPTION:
BRIEF SUMMARY
APPLICATION AREA OF THE INVENTION
The invention relates to a healing cap which can be fixed on an intraossally positioned dental implant and has a mating shoulder which can be matched to the shoulder of the implant and which lies below the roof part of the healing cap. Furthermore, the invention comprises an occlusally applicable screw for fixing the healing cap on the implant, as well as a protective cap as a temporary provision following removal of the healing cap for sealing and protecting the implant.
When inserting an implant into the maxilla or the mandibula, the surgical procedure of intra-ossal implantation in principle ends with the positioning of a special healing cap, before the papillae and the gingiva are repositioned as precisely as possible and are adapted using sutures. These healing caps, which generally consist of a biocompatible material, extend the implant, during the healing phase, which lasts a number of months, as far as the surface of the soft tissue. This thus achieves transgingival healing, even though the shoulder of the implant is located subgingivally. Such an insertion depth of the implant is desirable particularly in the case of aesthetic reconstructions, in order that later no implant surface whatsoever remains visible.
In addition to the biocompatibility, healing caps also have to meet requirements with respect to perfect seating, which is as far as possible free of gaps, on the implant, to the protection of the head of the implant, to the shaping of the mucosa and to ease of handling in practice.
PRIOR ART
Single-part healing caps are known for temporarily sealing ITI.RTM. implants--the latter have an implant head which widens upwards in the form of a funnel and an uppermost, radially encircling implant shoulder with a bevel angle of 45.degree.. Healing caps of this kind have a head part which is in principle cylindrical and flat and which on the side facing the implant has a hollow which complements the shoulder of the implant. On the top side, there is an engagement contour for a screwdriver, while a threaded pin extends below the top part, which pin can be screwed into the axial inside bore in the implant. If the availability of space requires the use of a healing cap with a smaller head, then a healing cap whose head can be countersunk in the inside cone of the implant is also available. Cf. the illustrations in: Internationales Journal fur Paradontologie & Restaurative Zahnheilkunde [International Journal for Periodontology & Reconstructional Dentistry], reprint, Vol. 13, Issue 5, 1993, pages 397 and 414.
The healing caps mentioned to this extent have the drawback that, due to their contour, they do not contribute optimally to preforming the gingiva, and are felt by the patient to be intrusive, particularly in the anterior and posterior regions; the healing caps with a reduced head no longer protect the shoulder of the implant.
Single-part healing caps are also proposed in EP-0,423,798 B1, in the company publication: 3i.RTM. IMPLANT INNOVATIONS.RTM.--The Emergence Profile System.RTM., 1993, and in PRACTICAL PERIODONTICS AND AESTHETIC DENTISTRY, Vol. 5 No. 5, June/July 1993. Although these healing caps may sometimes have a positive effect on the preforming of the gingiva, no improvement is achieved in the vestibular region. In addition, these healing caps are generally not suitable for implants with a bevelled shoulder.
Furthermore, two-part healing caps are known, which comprise the healing cap itself and an occlusally applied screw, which can be introduced into the cap head from above and is countersunk therein (referred to below simply as occlusal screw). The occlusal screw penetrates the healing cap centrally and axially, is supported therein, likewise engages in the inside bore provided in the implant and thus presses the healing cap onto the shoulder of the implant. Cf. the illustrations in Schroeder/Sutter/Buser/Krekeler: Orale Implantologie. [Oral Implantology] Georg Thieme Verlag Stuttgart, New York, 2nd Ed., 1994, pages 309f. In addition to the abovementi
REFERENCES:
patent: 4856994 (1989-08-01), Lazzara et al.
patent: 5026285 (1991-06-01), Durr et al.
patent: 5145372 (1992-09-01), Daftary et al.
patent: 5338196 (1994-08-01), Beaty et al.
patent: 5368160 (1994-11-01), Leuschen et al.
patent: 5368483 (1994-11-01), Sutter et al.
patent: 5527183 (1996-06-01), O'Brien
patent: 5622500 (1997-04-01), Niznick
patent: 5755575 (1998-05-01), Biggs
Internationales Journal fur Paradontologie & Restaurative Zahnheilkunde, special reprint, vol. 13, Issue 5, 1993, pp. 394-397 and 414.
The Emergence Profile System .TM., 3i Implant Innovations, Inc. brochure, 1993.
Orale Implantologie, Georg Thieme Verlag Stuttgart, New York, 2nd Ed., 1994, pp. 308-311.
"Managing the Soft Tissue Margin: The Key to Implant Aesthetics," Practical Periodontics and Aesthetic Dentistry, vol. 5, No. 5, Jun./Jul. 1993, pp. 81-87.
Buser Daniel
Schar Alex
Institut Straumann AG
Wilson John J.
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