SU624630A1 - Method of obtaining cement for filling teeth - Google Patents

Method of obtaining cement for filling teeth

Info

Publication number
SU624630A1
SU624630A1 SU752147176A SU2147176A SU624630A1 SU 624630 A1 SU624630 A1 SU 624630A1 SU 752147176 A SU752147176 A SU 752147176A SU 2147176 A SU2147176 A SU 2147176A SU 624630 A1 SU624630 A1 SU 624630A1
Authority
SU
USSR - Soviet Union
Prior art keywords
zinc oxide
weight
cement
minutes
polyacrylic acid
Prior art date
Application number
SU752147176A
Other languages
Russian (ru)
Inventor
Михаил Михайлович Гернер
Борис Павлович Пашинин
Нина Кирилловна Власова
Дмитрий Михайлович Каральник
Ирина Борисовна Воскресенская
Татьяна Григорьевна Сорокина
Александр Петрович Синеоков
Римма Александровна Барабашина
Владимир Николаевич Батовский
Original Assignee
Центральный научно-исследовательский институт стоматологии
Предприятие П/Я М-5927
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Центральный научно-исследовательский институт стоматологии, Предприятие П/Я М-5927 filed Critical Центральный научно-исследовательский институт стоматологии
Priority to SU752147176A priority Critical patent/SU624630A1/en
Application granted granted Critical
Publication of SU624630A1 publication Critical patent/SU624630A1/en

Links

Claims (1)

  1. The invention relates to the field of medicine, namely dentistry. A method of cement for sealing teeth based on zinc oxide is known by deactivating it by heat treatment and then mixing it with an aqueous solution of polyacrylic acid l. However, the cement hardening time (3-6 minutes) takes into account the rapid change in the rheological properties of this material after mixing the oxide powder zinc with polyacrylic acid is insufficient. The aim of the invention is to increase the curing time of the cement. This is achieved by the fact that, after heat treatment, the zinc oxide is additionally treated with a silicone finish and dried at 130-140 0. The method is carried out as follows. After heat treatment at a temperature of 100 ° -1300 ° C, O, 5-0.75 weight is fixed on the surface of the zinc sieve. % silicone .appret. To do this, 3 weight, h, zinc oxide powder is impregnated with 1 weight.h, 1.5-2.0% aqueous solution of silicone sizing agent. The fixing of the silicone finish on the surface of zinc oxide is carried out by drying at 13O-14CrC for 2O-30 min, with further adjusting the powder of zinc oxide to constant weight at a temperature of 110C. After drying on the surface of zinc oxide, 0.50, 75 wt. % sizing, If less than 0.5% by weight of a silicone sizing agent is fixed on the surface of zinc oxide, then zinc oxide will not be sufficiently deactivated and the curing time of the molding sand obtained by mixing will be 7–8 minutes. Fixing on the surface of zinc oxide more than 0.75 weight,% finish, does not lead to a significant increase in the time oi of the event. The mixing of deactivated zinc oxide with iodic 35-50% polyacrylic acid is carried out at a weight ratio of 6.5 to 4: 1 (preferably 1), Example, 3 wt. h. sealed at 1OOO С and sifted zinc oxide and most expensive 1% by weight including a 1.5% aqueous solution of y-aminopropyltriethoxysipan n stirred until a homogeneous mass is obtained. The fixation of the additive on zinc oxide is carried out at 14 ° C for 2 ° min and dried to a constant weight at 10 ° C. The number of akreppen finishing agent on the surface of zinc oxide is 0.5%. The deactivated zinc oxide powder is mixed with an aqueous 35% polyacrylic acid solution at a ratio of 2: 1, respectively. The resulting molding mass is set for 13 minutes. The compressive strength of the obtained polycarboxylate cement is 934 to g / cm. Example 2. 3 wt. h, heat-treated at. 1300 С zinc oxide is poured with a 1.5% solution of epoxypropoxypro, shtriethoxysilane and stirred, appr fixed at 130 ° C for 3 DOM. The amount of fixed apprethane of the surface of cis oxide O, 55 wt. % The deactivated zinc oxide powder is mixed with a solution of polyacrylic acid at a ratio of 1.5: 1, respectively. The resulting molding mass is cured B for 12 minutes, the compressive strength of polycarboxylate cement, 670 kg / cm I Pr and me 3. 3 weight. h, heat-treated at 900 ° C oxides of wort} were watered with a 2% solution of vinyltri- (2-metotoxy-etoxy) -silane and stirred. The silicone finish is fixed at 14 (f C for 25 minutes, the amount of the fixed finish is 0.75%. The inactivated zinc oxide powder is mixed with 5 0% polyacrylic acid at a ratio of 3: 1, respectively. The resulting molding material is cured for 15 minutes, the strength of polycarboxylate cement is 690 kg / cm. Example 4. A solution of polyacrylic acid with a concentration of 60% is mixed with oxide of a resin treated at 1 ° C, at a ratio of components of 1: 1, respectively. The curing time of the resulting molding material is 3 minutes. Cement strength during compression is 690 kg / cm. The proposed method allows to increase the curing time of the molding material up to 12-15 minutes while maintaining the high strength properties of the filling material. Increasing the time of conviction allows the material to remain in an adhesive state for a longer time The doctor of the tooth canalize the tooth canal. Formula of the invention The method of obtaining cement for dental fillings based on zinc oxide by its deactivation by heat treatment followed by mixing with an aqueous solution m of polyacrylic acid, characterized in that in order to increase the time of cement opening, zinc oxide after heat treatment is additionally treated with a silicone sizing agent and dried at 130-140 ° C. Sources of information taken into account in the examination: 1. German Patent No. 1903087, cl. 30 H 12/02, 1972.
SU752147176A 1975-06-23 1975-06-23 Method of obtaining cement for filling teeth SU624630A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU752147176A SU624630A1 (en) 1975-06-23 1975-06-23 Method of obtaining cement for filling teeth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU752147176A SU624630A1 (en) 1975-06-23 1975-06-23 Method of obtaining cement for filling teeth

Publications (1)

Publication Number Publication Date
SU624630A1 true SU624630A1 (en) 1978-09-25

Family

ID=20623671

Family Applications (1)

Application Number Title Priority Date Filing Date
SU752147176A SU624630A1 (en) 1975-06-23 1975-06-23 Method of obtaining cement for filling teeth

Country Status (1)

Country Link
SU (1) SU624630A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915592A1 (en) * 1987-12-19 1990-11-15 Sankin Ind Co DENTAL CEMENT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915592A1 (en) * 1987-12-19 1990-11-15 Sankin Ind Co DENTAL CEMENT

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