USRE21779E - Neutralization of acids exuding - Google Patents
Neutralization of acids exuding Download PDFInfo
- Publication number
- USRE21779E USRE21779E US21779DE USRE21779E US RE21779 E USRE21779 E US RE21779E US 21779D E US21779D E US 21779DE US RE21779 E USRE21779 E US RE21779E
- Authority
- US
- United States
- Prior art keywords
- acids
- cement
- filling
- acid
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002253 acid Substances 0.000 title description 13
- 150000007513 acids Chemical class 0.000 title description 7
- 230000005591 charge neutralization Effects 0.000 title description 3
- 230000001264 neutralization Effects 0.000 title description 3
- 238000006386 neutralization reaction Methods 0.000 title description 3
- 239000004568 cement Substances 0.000 description 17
- 239000003513 alkali Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 208000002925 Dental Caries Diseases 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000003472 neutralizing Effects 0.000 description 4
- 235000011007 phosphoric acid Nutrition 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000005995 Aluminium silicate Substances 0.000 description 3
- PZZYQPZGQPZBDN-UHFFFAOYSA-N Aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 230000000622 irritating Effects 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N silicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- ILRRQNADMUWWFW-UHFFFAOYSA-K Aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N HF Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N Silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- GOLCXWYRSKYTSP-UHFFFAOYSA-N Arsenious Acid Chemical compound O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 1
- 241000272184 Falconiformes Species 0.000 description 1
- 206010022114 Injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000003113 alkalizing Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000000266 injurious Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000001187 sodium carbonate Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001519 tissues Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/40—Primers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/849—Preparations for artificial teeth, for filling teeth or for capping teeth comprising inorganic cements
- A61K6/853—Silicates
Definitions
- This invention relates to the neutralization of acids in silicious cements as used in the practice of dentistry.
- silicious cement fillings are prepared by mixing a powdered mass containing kaolin, or a kindred silicate, with a suspending medium, preferably a solution of orthophosphoric or some other of the phosphoric acids, to which oxides of aluminum or calcium have been added. This mixture, when of the proper plastic con sistency, is pressed into the thoroughly cleaned and dried tooth cavity.
- a suspending medium preferably a solution of orthophosphoric or some other of the phosphoric acids, to which oxides of aluminum or calcium have been added.
- colloidal aluminum phosphate and colloidal silicic acid consisting of solid silicate particles, imbedded in a matrix of colloidal aluminum phosphate, and a gel of silicic acid, occluding a proportion of free and liquid phosphoric acid.
- Kaolin which is the base of most silicious cement preparations on the market, often contains fluorides of aluminum which, in contact with phosphoric acid, will yield hydrofluoric acid; likewise traces of arsenic may be found in kaolin which may give origin to arsenious acid. All these acids, even in minute quantities, when they exude from the cement and come into contact with the tissues or the structure of the tooth will cause pain and eventually devitalize the pulp of the tooth.
- One object is to neutralize any free acids which may exude from thefilling while in the process of cementation. This object relates to the inner surface of the cement plug as well as to the outer surface.
- a further feature is to prepare and impregnate the surface of the cavity into which the filling is to be pressed with an alkaline medium to counteract any acid which may come from the filling, whether or not an intermediate lining be used, while a concurrent object is to simultaneously neutralize and absorb any acidulous moisture which may exude from the outer surface of the filling.
- a further salient feature of this invention is the use of an absorbing and neutralizing means which can be readily applied and used in connection with all filling material which develops free and potentially injurious acids while solidifying.
- An important step of the filling process comprises the impregnation of the inner surface of the cleaned cavity with a liquid dilute alkali.
- the process is also applicable in cases where silicate cements in whole or part are merely used as a cementing medium, as for examples for gold and porcelain crowns, inlays, and other dental restorations.
- the leading principle of the invention is to overcome the irritating effect of silicious cement fillings of live teeth. Alkallzing, neutralizing and absorption of surplus acidic moisture are the contributing and dominating factors of the process.
- a composition of matter for treating a tooth cavity to receive an acid-exuding cement filling comprising an absorbable solution of alkali adapted to alkalize the field of operation, neutralize exuded acid, and reduce the irritating effect of the cement.
- the method which comprises the pre-treatment of the cavity with an aqueous solution of an alkali, drying the applied solution to cause evaporation of water and leave substantially dry alkali over the inside of the cavity, filling the pretreated cavity with the said cement, and, by the alkali applied in the pretreatment, neutralizing acid exuded by the said cement at positions of contact of the ocment with the tooth structure and reducing the irritating efiect of the cement.
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Dental Preparations (AREA)
Description
Reissued Apr. 22, 1941 NEUTRALIZATION OF ACIDS EXUDING FROM'SILICIOUS CEMENTS Joseph H. Schlesinger, New York, N. Y., assignor to Eagle Chemical Company, New York, N. Y.
No Drawing. Original No. 2,154,413, dated April 11, 1939, Serial No. 49,182, November 11, 1935. Application for reissue October 31, 1939, Serial 4 Claims.
This invention relates to the neutralization of acids in silicious cements as used in the practice of dentistry.
In common practice silicious cement fillings are prepared by mixing a powdered mass containing kaolin, or a kindred silicate, with a suspending medium, preferably a solution of orthophosphoric or some other of the phosphoric acids, to which oxides of aluminum or calcium have been added. This mixture, when of the proper plastic con sistency, is pressed into the thoroughly cleaned and dried tooth cavity.
After the foregoing treatment the patient frequently suffers pain, caused by traces of acid seeping out of the cement and finding its way to the nerve causing a neuralgic irritation, necessitating removal of the filling and renewed treat ment of the tooth.
When the silicate powder and the liquid are mixed the fluid phosphoric acid used attacks part of the powder, forming colloidal aluminum phosphate and colloidal silicic acid, consisting of solid silicate particles, imbedded in a matrix of colloidal aluminum phosphate, and a gel of silicic acid, occluding a proportion of free and liquid phosphoric acid.
Kaolin, which is the base of most silicious cement preparations on the market, often contains fluorides of aluminum which, in contact with phosphoric acid, will yield hydrofluoric acid; likewise traces of arsenic may be found in kaolin which may give origin to arsenious acid. All these acids, even in minute quantities, when they exude from the cement and come into contact with the tissues or the structure of the tooth will cause pain and eventually devitalize the pulp of the tooth.
One object is to neutralize any free acids which may exude from thefilling while in the process of cementation. This object relates to the inner surface of the cement plug as well as to the outer surface.
A further feature is to prepare and impregnate the surface of the cavity into which the filling is to be pressed with an alkaline medium to counteract any acid which may come from the filling, whether or not an intermediate lining be used, while a concurrent object is to simultaneously neutralize and absorb any acidulous moisture which may exude from the outer surface of the filling.
A further salient feature of this invention is the use of an absorbing and neutralizing means which can be readily applied and used in connection with all filling material which develops free and potentially injurious acids while solidifying.
These objects and advantages will become ap-' parent from the following detailed disclosure.
An important step of the filling process comprises the impregnation of the inner surface of the cleaned cavity with a liquid dilute alkali.
The process is also applicable in cases where silicate cements in whole or part are merely used as a cementing medium, as for examples for gold and porcelain crowns, inlays, and other dental restorations.
In operation, after the cavity in the tooth is cleaned and dried, its inside should be thoroughly daubed or swabbed with a dilute alkaline solution (hydroxides of the alkali metals, sodium carbonate or any other suitable alkali), and given time to dry. The tooth cavity should be protected from moisture until the filling is inserted.
The leading principle of the invention is to overcome the irritating effect of silicious cement fillings of live teeth. Alkallzing, neutralizing and absorption of surplus acidic moisture are the contributing and dominating factors of the process.
Having described the invention, what is claimed as new and sought to secure by Letters Patent,
1. In the process of filling dental cavities with silicious cement containing a mineral acid, the steps consisting of alkalizing the interior surface of the cavity with an absorbable liquid alkali, prior to filling to prevent injury to live pulp, filling the cavity with the cement and neutralizing the entered filling by an exterior application of alkaline media,
2. In the process of using silicious cement when mixed with mineral acids as a cementing medium to retain dental restorations in adjusted position relative to a tooth prepared therefor, the step which consists of treating the tooth surfaces to receive the restoration with a liquid absorbable alkali.
3. A composition of matter for treating a tooth cavity to receive an acid-exuding cement filling, the said composition comprising an absorbable solution of alkali adapted to alkalize the field of operation, neutralize exuded acid, and reduce the irritating effect of the cement.
4. In the filling of dental cavities with cement containing a mineral acid, the method which comprises the pre-treatment of the cavity with an aqueous solution of an alkali, drying the applied solution to cause evaporation of water and leave substantially dry alkali over the inside of the cavity, filling the pretreated cavity with the said cement, and, by the alkali applied in the pretreatment, neutralizing acid exuded by the said cement at positions of contact of the ocment with the tooth structure and reducing the irritating efiect of the cement.
JOSEPH H. SCI-ILESINGER.
Publications (1)
Publication Number | Publication Date |
---|---|
USRE21779E true USRE21779E (en) | 1941-04-22 |
Family
ID=2087799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US21779D Expired USRE21779E (en) | Neutralization of acids exuding |
Country Status (1)
Country | Link |
---|---|
US (1) | USRE21779E (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2729569A (en) * | 1952-12-12 | 1956-01-03 | Lipkind Henry | Dental cements |
US3247593A (en) * | 1963-03-29 | 1966-04-26 | Eagle Chemical Co | Silicious dental filling |
US4685969A (en) | 1984-12-05 | 1987-08-11 | Coltene Ag | Process and separating substance for removing a cavity-polymerized inlay consisting of a dental filling composite |
-
0
- US US21779D patent/USRE21779E/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2729569A (en) * | 1952-12-12 | 1956-01-03 | Lipkind Henry | Dental cements |
US3247593A (en) * | 1963-03-29 | 1966-04-26 | Eagle Chemical Co | Silicious dental filling |
US4685969A (en) | 1984-12-05 | 1987-08-11 | Coltene Ag | Process and separating substance for removing a cavity-polymerized inlay consisting of a dental filling composite |
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