Dentistry – Apparatus – Tool bit
Patent
1996-04-08
1998-10-06
Lewis, Ralph A.
Dentistry
Apparatus
Tool bit
433119, 433142, A61C 303
Patent
active
058168087
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the field of instruments for periodontal treatment, and in particular instruments which permit removal of tartar simultaneously from the root surface and from the mucosal wall in the periodontal pockets.
2. Description of the Related Art
The success of periodontal treatment depends to a great extent on the complete elimination of the tartar which is situated in the periodontal pockets.
It is known that the root surfaces of the teeth affected by periodontolysis in the active phase are covered with a bacterial plaque and tartar within the depth of the alveolus, for which reason the root surface is found to be damaged and the cementum necrosed. By removing the plaque, the tartar and the necrosed cementum, it is possible to restore a biological gingival seal which maintains the periodontium in a healthy state.
The means known at the present time are, on the one hand, manual curettes, or else inserts which are mounted on vibratory handpieces, in particular ultrasonic scalers. Disadvantages of these means are that the rigidity of the instruments does not permit treatment of the deep periodontal pockets and does not permit satisfactory cleaning of the furcations. This forces the practitioner to operate in accordance with the conventional methods of periodontal surgery, which involves the cutting of flaps.
SUMMARY OF THE INVENTION
The object of the present invention is to provide instruments and a method for treating periodontal disease, permitting treatment of the deep periodontal pockets and the furcation zones without having to resort to the cutting of flaps.
More precisely, the invention relates to an instrument for periodontal treatment, consisting of a handle (i.e., connection piece) and of a blade, wherein said blade has an active (i.e., abrasive) part exhibiting two sectors distributed along the blade, and each situated on either side (i.e., opposite sides) of a plane passing through the axis of the blade, these two sectors exhibiting different levels of aggressiveness (i.e., abrasiveness) such that when the instrument is introduced into the periodontal pocket during treatment, the more abrasive sector comes into contact with the root surface of the tooth, and the other, less abrasive, sector comes into contact with the mucosa, said instrument being held by way of its connection piece on a handpiece which confers a vibratory movement on it, allowing the two sectors to effect the detachment of the undesirable tartar.
The instrument for dental surgery according to the present invention has the advantage that once it has been introduced into the periodontal alveolus, it can reach depths which are inaccessible to the instruments according to the prior art.
Another advantage afforded by the instrument according to the present invention is the fact that when it is being used, the root surface on the one hand and the mucosal wall on the other hand are both treated simultaneously.
BRIEF DESCRIPTION OF THE DRAWINGS
Other advantages and characteristics of the instrument for dental surgery according to the present invention will become clear to specialists in the field from the following detailed description of two illustrative embodiments, with reference being made to the attached drawing, in which:
FIG. 1 represents a side elevation of the instrument,
FIG. 2 represents a side elevation, from the opposite side in relation to FIG. 1,
FIG. 3 represents an enlarged cross section along the line A--A' in FIG. 1, and
FIG. 4 represents a side elevation of a second embodiment of the instrument,
FIG. 5 represents a perspective view of a variant of the invention,
FIG. 6 represents an enlarged cross section along the line B--B' in FIG. 5.
DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
Referring to FIG. 1, it can be seen that the instrument for dental surgery according to the present invention consists in the main of a blade (1) having a substantially elliptical cross section, and exhibiting, on its side, a plurality of mutually adjacen
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Badoz Jean-Marie
Gambarini Gianluca
Scarano Antonio
Trisi Paolo
Lewis Ralph A.
Micro Mega International Manufactures S.A.
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