Method for debonding of orthodontic metal brackets with eugenol emulgel
AssigneeKing Abdulaziz University
InventorsAhmed Samir Ibrahim BAKRY, Mona Aly Abbassy, Amal Linjawi, Ali Habib Hassan, Ahmed Fathy Hanafy, Gihan Salah Labib, Amal Mohammed S. Abushal
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Abstract
The invention is directed to a composition that safely removes a cured dental cement or resin from metal brackets, metal braces, and enamel surfaces of teeth. It contains eugenol, isoeugenol, methyl-eugenol or an isomer thereof. A method for removing orthodontic fixtures adhered with a dental cement or resin to the enamel surfaces of teeth from these surfaces by contacting the dental cement or resin with a composition containing eugenol.
Claims20
1:
- A method for removing a dental appliance or dental prosthetic bound to a tooth or teeth via a dental resin, comprising:
- contacting the dental resin with a gel comprising eugenol, at least one polysorbate surfactant and at least one crosslinked acrylic acid polymer gelling agent, for a time sufficient to reduce a Vickers hardness of the dental resin to a value of no more than 70, and
- removing the dental appliance or dental prosthetic from the tooth or teeth.
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4:
- The method of claim 1, wherein the eugenol in the form of a gel is contained in a tray that fits around parts of the tooth or teeth bonded to the metal bracket, dental appliance and that contacts the eugenol in the form of a gel with the dental resin.
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6:
- The method of claim 1, wherein the gel is contacted with the dental resin for at least 24 hr.
7:
- The method of claim 1, further comprising brushing, buffing, polishing, washing or etching the dental resin to remove microbial or chemical coatings prior to contacting it with the gel.
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9:
- The method of claim 1, wherein the gel comprises eugenol in an amount ranging from 0.5 to 10 wt %, relative to a total weight of the gel.
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11:
- The method of claim 1, wherein the gel comprises 0.5 to 10 wt % of the at least one gelling agent.
12:
- The method of claim 1, wherein the gel comprises 1 to 40 wt % of the at least one polysorbate surfactant.
13:
- The method of claim 1, wherein the gel further comprises 2 to 30 wt % of at least one of polyethylene glycol, propylene glycol, and glycerol.
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16:
- The method of claim 1, wherein the gel has a viscosity ranging from 1,000 to 5,000 cP.
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20:
- A method for debonding a metal bracket, a dental appliance or dental prosthetic from a tooth or teeth comprising:
- filling a tray with a composition comprising eugenol,
- wherein the composition has a pH ranging from 6.0 to 8.0 and further comprises:
- a crosslinked acrylic acid polymer, and
- at least one polysorbate;
- fitting the tray over the tooth or teeth that are bonded to the metal bracket, dental appliance, or dental prosthetic for a time sufficient to reduce a Vickers hardness of a dental resin binding the metal bracket, dental appliance or dental prosthetic to the teeth to a value of no more than 70, and
- debonding the metal bracket, a dental appliance, or a dental prosthetic from the teeth.
Dependencies are inferred from the claim text.