30 results about "Orthodontic Adhesives" patented technology

A packaged assembly includes a container with a chamber and an orthodontic appliance received in the chamber. The assembly also includes a quantity of orthodontic adhesive material that is received on a release surface in the chamber. The appliance is detachably mounted on a support and is relatively movable when desired in order to bring a base of the appliance into contact with the adhesive material for transfer of the adhesive material to the appliance.

A packaged orthodontic assembly includes a container with a chamber and an orthodontic appliance received in the chamber. A quantity of a first orthodontic adhesive material is applied by the manufacturer to the base of the orthodontic appliance. A second orthodontic adhesive material is also received in the chamber in initially spaced relationship to the first orthodontic adhesive material. The practitioner can elect to bring the first orthodontic adhesive material into contact with the second orthodontic adhesive material when desired.

An orthodontic assembly includes an appliance placement device such as an indirect bonding transfer tray or a jig. A number of orthodontic appliances such as brackets are releasably connected to the placement device. The assembly also includes a dispensing unit that is adapted to receive the placement device and apply a quantity of adhesive to the bases of the appliances simultaneously.

Orthodontic adhesives are claimed which use polymeric filler particles with defined particle size characteristics. The particle size characteristics are controlled such that these adhesives provide comparable mechanical retention and cohesive strength of conventional orthodontic adhesives when used to bond orthodontic appliances to teeth. Because polymeric fillers are generally softer than inorganic fillers, these adhesives are easier to remove from the tooth than conventional adhesives after debonding an orthodontic appliance. Embodiments of the invention include both self-curing and two-part adhesives, packaged adhesive-coated orthodontic appliances, and methods for removing a cured adhesive from a tooth surface.

An orthodontic adhesive includes components capable of allowing easy debonding of an orthodontic device from a patient's tooth. The adhesive includes an engineered marine mussel protein. The adhesive may include at least one photocleavable moiety. The adhesive is applied in one or more individual layers. One of the components of the adhesive is capable of binding to a tooth and the other component may be capable of binding to an orthodontic device. A method of adhering an orthodontic device to a tooth includes applying a layer of an orthodontic adhesive to either the tooth or the orthodontic device or the tooth and the orthodontic device and affixing the orthodontic device to the tooth with the orthodontic adhesive situated between the tooth and the orthodontic device. The engineered marine mussel protein includes one or more catechol moieties or one or more derivatives of a catechol moiety.

An adjustable orthodontic bracket includes a metal base adapted to be rigidly secured directly to a tooth by a relatively thin layer of an orthodontic adhesive. This relatively thin layer of heat softening material fastens an orthodontic bracket directly to a tooth and subsequently heats the orthodontic material with a digital laser that allows the polymer material to reproduce a liquidous surface for adjusting the position of the bracket so that the bracket can be adjusted in all directions around the base member without overlapping the periphery of the base member.

The invention discloses an orthodontic adhesive and a preparation method thereof. The adhesive is prepared from the following components in parts by weight: 19-37 parts of epoxy resin, 5-16 parts of polymethacrylate, 3-8 parts of n-butyl acrylate, 12-19 parts of carboxymethylcellulose, 5-15 parts of dibutyl phthalate, 32-43 parts of glycerinum, 3-10 parts of a coupling agent, 12-25 parts of dibutene and 6-21 parts of hydroxyapatite. The prepared adhesive is high in bonding strength and high in stretchability, does not generate an allergic symptom and can be widely applied to clinical treatment.

Three adhesives formulated with Trimethylolpropane Trimethacrylate (TMPTMA) that do not contain BisGMA were developed, whereby the mutagenic and teratogenic risk by the release of bisphenol A is eliminated, and presented a better performance compared to the three commercial adhesives prepared with BisGMA (Adhesive A, Adhesive C and Adhesive B). The invention provides an adhesive used in one-step and provides a system which is formed by a primer and a slurry. The adhesives of the invention were compared with two commercial controls. They were physically characterized by assessing: hardening time, adhesion stress, elastic modulus, sorption and solubility at different pHs (6.8 and 7.7); by the obtained values premature detachments, white lesions below the appliance and microfiltration are avoided; its fluidity, film thickness were evaluated and were compared with those obtained from the three commercial adhesives. Storage stability and thermogravimetric analysis were assessed. The prepared adhesives with TMPTMA are photopolymerizables, thereby providing enough time to the operator to place the appliance in proper position, it is easy to handle, capable of supporting orthodontic biomechanics, has low elastic modulus, enables transitions of heavy arches reducing the risk of involuntary detachment of the appliances, have low viscosity, penetrates on both the brace retentions as those made with acid etching on enamel surface. Presenting adhesion to both the base of the attachments as well as to the enamel, its film thickness is minimal and does not alter the prescription system. When the appliance is removed at the end of the treatment, it does not cause structural damage to the enamel because the adhesive remains on the enamel and can be removed easily with a rotary instrument.