DENTAL MATERIAL COMPOSITIONS FOR CLEANSING AND REMOVAL OF ANIONIC CONTAMINANTS FROM SUBSTRATES & THEIR METHODS OF USE
Compositions and methods useful for removing anionic contaminates and debris including phosphates from dental restorative substrates are disclosed.
1 . An aqueous composition for removing at least one anionic contaminant from dental restorative surfaces, comprising at least one metal trihalide salt, wherein the pH of the composition is less than 7.
2 . The composition of claim 1 , wherein the composition retains its chemical stability for more than 60 days without the formation of a visible precipitate.
3 . The composition of claim 1 , wherein the at least one metal trihalide salt contains a metal element exhibiting an electronegativity value less than 2.
4 . The composition of claim 1 , wherein the at least one metal trihalide salt dissolves in water forming at least one metal cations, wherein the at least one metal cation has a high affinity for phosphate.
5 . The composition of claim 1 , wherein the metal of the at least one metal trihalide salt has an atomic size between 125 pm and 215 pm.
6 . The composition of claim 1 , wherein the at least one metal trihalide salt comprises a lanthanum salt.
7 . The composition of claim 1 , wherein the at least one metal trihalide salt comprises lanthanum chloride hydrate.
8 . The composition of claim 1 , wherein the at least one metal trihalide salt comprises lanthanum chloride hydrate at a concentration between 1% and 90%.
9 . The composition of claim 1 , further comprising at least one thickening agent.
10 . The composition of claim 1 , further comprising a surfactant or blend of surfactants.
11 . The composition of claim 1 , further comprising a humectant or humectants.
12 . The composition of claim 1 , wherein the composition has a viscosity between 0.01 and 2 Pa·s.
13 . The composition of claim 1 , wherein the at least one anionic contaminate comprises phosphate.
14 . The composition of claim 1 , further comprising a colorant.
15 . A method of cleaning a dental restorative surface, comprising:
applying a cleaning solution of claim 1 to a dental restoration surface;
allowing the cleaning solution to dwell on the dental restoration surface for a period of time; and
rinsing away the cleaning solution from the dental restoration surface,
wherein the pH of the cleaning solution is less than 7.
16 . The method of claim 16 , wherein, the cleaning solution does not require shaking prior to application to the dental restoration surface, wherein, the cleaning solution chemically removes substantially all phosphate contaminates from the dental restoration surface; and, wherein, the cleaning solution is chemically stable for at least 60 days without the formation of a visible precipitate.
17 . The method of claim 16 , wherein the dwell time is between 5 and 60 seconds.
18 . A dental restoration kit, comprising:
a cleaning composition of claim 1 ; and,
application tips or application brushes.
19 . The kit of claim 19 further comprising a dental primer and a dental cement or a dental composite.