FR2639217A1 - Method of direct casting on the teeth of aesthetic orthodontic locks made of composite materials or other materials, and implementation device - Google Patents

Abstract

The method, which is the subject of the present invention, consists in casting directly on the teeth orthodontic locks made of composite materials or other materials, by means of connection pieces which are sufficiently flexible to allow the part which bears on the tooth and which comprises the impression of the lock to match the shape of the latter. The casting is carried out by polymerisation of a composite material or of a resin. According to one embodiment, a lock is in the form of a hollow cylinder, of which one of the ends 1 comprises a hollow impression 2; the other end 3 is designed in such a way as to fit on an optical guide 4 or on any given support 5 depending on the method of polymerisation used. In some cases the body 6 of the connection piece can be covered by a sheath 7.

Description

METHOD FOR DIRECT MOLDING ON TOOTH TOPS
ESTHETIC ORTHODONTICS IN COMPOSITE MATERIALS
OR OTHER AND DEVICE FOR IMPLEMENTATION.

(Dominique DUCASSE)
The present invention relates to a method of direct molding on the teeth orthodontic locks of composite materials or others, and its implementation device.

 The goal pursued and achieved is to obtain a device that is not very visible and therefore aesthetic. perfectly suited. since correctly marrying the shape of the patient's teeth. and very quickly made and applied since no previous preparation is necessary.

 The methods known to date and their application devices do not make it possible to achieve this goal.

 They traditionally consist of prefabricated metal locks on the teeth. plexiglass or ceramic. or, to make directly, on each of the teeth. a s-illie made of composite materials or others, which is then resized.

 In the technique of realigning visible teeth. presenting disstems or malpositions. either naturally

either after extraction or during pathological migrations. I-a traditional method does not offer enough aesthetic guarantees and assumes to be in possession of a large selection of locks.

 The proposed technique and its setting device Cree work.

allow to overcome these disadvantages.

 It consists in molding orthodontic locks of composite or other materials directly on the teeth by means of sufficiently flexible end pieces to allow the part which is applied to the tooth and which includes the imprint of the lock.

 to remove the shape of the latter.

 The imprint is filled with resins or composite materials, with direct chemical polymerization or polymerizable by the radiation of visible light or ultraviolet.

 The application of resins or composite materials with direct chemical polymerization is with a-es ends or little transparent: in this case, any support is adapted to the free end of the tip.

 When the polymerization is provided by visible light or U.V., sufficiently transparent tips are used; in that case. light-conducting systems for light-curing, such as optical guides. are fitted on the free end of the mouthpiece.

 The design of the di-spositif used will be better understood using an embodiment, according to the invention.

schematically represented. as a non-limiting example.

on the attached drawings:
FIG. 1 represents the front view of a mouthpiece
FIG. 2 shows a sectional view of a mouthpiece
According to Figures 1 and 2 and according to one embodiment, a tip is in the form of a hollow cylinder of one to two centimeters in length and a few millimeters is used.

 One of its ends (1) has a hollow imprint (2: obtained by molding the material of the tip on models of prefabricated locks: this molding can be obtained itself by thermal polomatisation or by chemically light-curing. visible or ultraviolet light.

 The other end (3), intended to fit on an optical guide (4) or on any support (5) as appropriate, is molded according to the same methods.

 The diameter of the ends (1 and 3) therefore depends both on the diameter of the optical guide (4) or the support C5). and the size of the lock to be made.

 The body (6) of the tips used for photopolymerization, may be surrounded by an opaque sheath <7) to prevent loss of light and reduce the polymerization time.

 Different tips can be used. They can be opaque or transparent, sheathed or unsheathed and variable in size depending on the case to be treated.

 Their external form can be any. but in any case, it must not generate visibility for a good positioning of the tip on the tooth. In addition, it can be facilitated by the addition of one or more indentations. in bump or colored on this tip.

 It should be noted the very low cost of this device. Each tip can be discarded after use or reused after sterilization.

Claims (3)

 A method of molding orthodontic locks characterized in that the molding is performed directly on the teeth by polymerization of composite or other materials.  - An end (I) bearing a hollow recess (2z of the lock to achieve obtained by molding the material of the tip on a prefabricated lock model.  2> Device for direct molding on the teeth of orthodontic locks, characterized in that, of cylindrical or other shape. it is made of a sufficiently flexible material and comprises  - An end (3) coming to fit either on an optical guide (4> for the photopolymerization of composite materials or other or on any support (5).  a body (6) possibly provided with an opaque gaIne (7>.  3) direct molding device on the teeth of orthodontic locks, characterized in that:  the material of which it is constituted depends on the nature of the polymer used to oralize the lock.  These dimensions vary according to the dimensions of the lock to be produced, the optical guide necessary for the light-curing (4) or the support (5) to be used for the other modes of polymerization.