The composition includes an alginate material comprising an alginate in an amount between about 10 and 50 weight percent, a filler material in an amount between about 10 and 90 weight percent, and a binder material in an amount between about 1 and 50 weight percent. The composition also includes a silane coating that is added to either the filler or to the alginate material as a whole. The resulting washed mixture was then placed in an oven and heated to 90° Centigrade for about four hours. generation, Dental compositions which can be prepared and worked by the action of oscillations and method for the preparation thereof, Algin based dental impression material containing biocidal component, Low dusting powdery alginate impression material for dental use, <- Previous Patent (Microemulsion printi...). ; pp. Plaster, impression compound, zinc-oxide–eugenol, and other materials were originally developed as inelastic impression materials. �մ3��؏�|E��{ CONSTITUTION: An alginate impression material composition contains 0.1-85wt.% of pulverized cereal husk or wood meal. The inventive alginate impression composition is advantageous since it does not require use in a dry condition. Dental Material 1. In addition, an alginate is used to make primary impressions so that later partial, total … This is because of the hydrophilic nature of the inventive composition. Essential Dental Systems, Inc. (Hackensack, NJ), 523/109, 524/28, 523/109, 524/28, 106/35, 106/38.4, 106/38.35. General Comments – Impression materials are used to make replicas (models or casts) of t eeth and other oral tissues. Product Name: Alginate Impression Materials . endobj %PDF-1.5 A binder ingredient is also part of the alginate material in an amount between about 1 and 50 weight percent. Furthermore, the alginate impression composition of the invention is geared for the medical or dental practitioner to use. It will thus be seen that the objects set forth above, among those made apparent from the preceding description, are efficiently attained, and since certain changes may be made in carrying out the above method and preparing the composition, as set forth above, without departing from the spirit and scope of the invention, it is intended that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense. �:Ň�?���%�;V���+�Gܲ�-u�fl�"=�x��Umƛli 9נ�㌖���;1�}b�����N���yy[���'�tx1� After thorough mixing, a homogenous material is obtained, which is used to make the desired impression. �/I-�/Y7�m��ՊP��lJr���k�v\�XW�19�fJ�RJ|iYi�]Us�dW�;Sk�'G?_�dJ�֖�gnD�{F*"B�_�sr{�c�-���AaVS�+��&EH! © 2004-2021 FreePatentsOnline.com. Most acceptable limits for accuracy are from 0.1% to 0.27%. Alginate impression materials consist of a powder that when mixed with water forms a fast-setting gel. Basic formulation of dental alginate impression material composition. 3. The color change of KromaFaze Dust-Free alginate offers a visual guide for consistent impression making. /Length 7161 Within the limitations of this study, it can be extrapolated that, although this class of alginate impression materials was manufactured for extended pour purposes, clinicians should avoid storage of the studied brands for 6 h. Whenever 1 h to pour is necessary, 100% controlled humidity is the ideal … Preparation of the alginate composition is achieved in the same manner as Example 1. G5>���X`�钳|F��;���f�Ĵ�N���UQËD^����lr���t����;ΗC}�v~�kd�;4�Q�����T�`�ۏ�Sై5�5��t��.ܹ�Ѝ�Ⳙ��tGPZ$5I���Ӄ|l�َ���rT>�r!pb�`F��5X��N���$燲5�+�,vt�Iu �ܹs�A8h����ұ�#qkV��&U�H����%�����w�U5/)�>�څ�RCp�]����Z��T~�u\�L�h.o��Ʋ�6�����r%�8x�{���8�޾��%�*d��_a ��uDҙu����:~�$%/��q[�Xȧ眦%��M|s� �?,ĤR Ri/T��VZT�I�\_��e�Wq��18�L�n���;��(r��H4�t��59q���2+�x��W�&��$.ͨ��Z���� ��v�.h�e;�MjC���y@�j�_�Xi� N�\�3���P��7\�$/gsj��v�t�|M��R��7q+h]sh�o�$���XI�Ǟ/��hA���� ���,��I��D�{�,Z{���D�Π i��?�m�G��B�����Z��\�]妏r73"0SZ�'��I��!�����C�4v�r?#t1{H��#�c�EWc$z���yܕ�+�_�`߆���������}_k����q��@�3�����_�_�"���a*4� �j��}[++��ԏ`V ۇ?��ş�v{�4Ju�8�R[��Lh���7�����b�~�;��b������w�� �Y�Y��Z�RIY^aT�{tQQa�0j�[�2 The critical feature of the inventive impression composition is the addition of a silane coating. The filler ingredient of the alginate material is present in an amount between about 10 and 90 weight percent based on the weight of the alginate material. Preparation of the alginate composition is achieved in the same manner as Example 1. Like agar, it is a natural Hydrophillic Colloidal Polysaccheride extracted from brown seaweed. The inventive composition of Group 4 comprised 20.5 grams of powder and 40.0 grams of water. 4. Reference groups were also created mesiodistally on the distolingual cusp of the left and right first molars. Manufacturer: Kerr Corporation 1717 W. Collins Ave. Orange, CA 92867-5422 /Ordering (Identity) Several modifica-tions were made in the composition of conventional alginates to address their shortcomings. In alginate polymers, the residues are arranged in a block structure of a ho-. The function of the filler ingredient is to add strength to the overall inventive composition. All rights reserved. �'˟R2�vʸb�m�bO�(۰�e�O��`e�tZf �S@Dh~��5WSw�O�/��A�������RҚyg�ZꃰWq�Qz�&lկ�T�6S�ӊQ� nKm�5��~�d��ꨵʍ�I)}�����W,GQ�_��˅:-/ �F`�_$*a;�m\bJF�uD^A��p���3#��R�رi�G�N�ĺlo�V��d���?0�sS���&Q���#p�I����^(��i�Y,�q�Aʋ��I����>O�-RM�aPa��VRMA�M The resulting silane coated alginate composition was removed (15.5 grams)--weight recovery was 96.88 percent. 16.00 grams of filler (silica) was used at the start. & Terms of Use. an organofunctional silane coating selected from the group consisting of epoxy silanes, methacrylate silanes and amino silanes, said silane coating to render the composition hydrophilic added to the alginate material in an amount between about 1 and 80 weight percent as compared to the weight of the overall alginate composition. DeTrey Zelgan®2002 is a dust-free alginate impression material complying with ISO 1563 and EN 21563, respectively. The composition includes an alginate material comprising an alginate in an amount between about 10 and 50 weight percent, a filler material in an amount between about 10 and 90 weight percent, and a binder material in an amount between about 1 and 80 weight percent. Trisodium phosphate (2%) Added to slow down the reaction time for mixing. Privacy Policy Preparation of the alginate composition is achieved in the same manner as Example 4. The resulting washed alginate mixture was then placed in an oven and heated to 90° Centigrade for about four hours. The impression tray was placed over the acrylic master cast and hand pressure was slowly applied for about 30 seconds in order to ensure a proper fit. The purpose of the alginate in the composition is to provide a matrix to hold the filler ingredient. Dental impressions are made mainly in the prosthetic and surgery branches. Alginate is flexible and flows well. e������ٰ΅���.�K�7��0})\��rXW��p\ ��o�Z����F� �xl���2�߀��r)/� �^���v�=� wa����p?�HC��P� nE���V\���B��V�3��"�����p6���gv�����O[��1���^x���pe��=���gQ��C�{�Ƶv ^��%x^�7�M8o�;�����U�9�z�ޅѲ-Ɏl^�K?�=����_2��(���]+�� �g>�1�g�Ρ��c|�'���ٸm{1�����=������%�c�x"6��#Cu��ea���!��"J#|��~\߅���P���X���;hã�}�۷�.E�������W1�!��1Ҝ�3�1�?�~?V���������s��_���~����k����Q�����\��J����iŘ�D8�:��E��L�gZ�0-�3323����P��%�)�Țx���Lb�,����Lg,�9Y�qe)C%,�X6s��lr͔���h�t��p��V��ü̇�6��bcX1j�0_��,˗Y�a>,������"�*���ys�2{VS0��0s��iS��M���T]UYQ>�_V:a����cF��y�r��]�RVfr��l2贚8�J�/!�URu�#�n)�RMM�K-�h9N�r���D���Y6s�h�G��߳���Ȓ��a|^��Jr��WJ��5#��u�R�#�'����-g�q:���*yI�#ĚU�곖tW5W��^��B�X��˅^��:L��Im�lX)�°��^|x�!�Uղ04}F����t6�:��}�T!��˱��.u����,b����Bia�)��؂��Ū��COh�T��d�P�TY�H�n�P,�t�%G��������i�iT.���|�Ca���4`߰�8>����҈�c&�5#Hy̷����4��f^�k���%]�%C՛%'������%ɡ����\���q��!��ΖE�Re%ŭ1�Wb��kUo��[�qKyfC>�-�(��*|�6�*�j�Ċ~�� Conventional alginate impression materials are hydrophobic, thus requiring vigorous mixing of the alginate/water mixture following the addition of water. What Is Alginate Made Of? >> However, conventional alginate materials have been too weak to consistently offer these desirable properties. comprising β-d-mannuronate (M) and its C-5 epimer α-l-guluronate (G). The reactive constituents of alginates are sodium or potassium salts of alginic acid and calcium sulfate that when mixed with water form a sol. In order to prepare the filler composition, 13.0 grams of diatomaceous earth were placed into a screw-cap vial. Specifically, impressions are taken after a surgical procedure is performed, and the surgically injured tissues have healed. This alginate impression material When the powder is mixed with water, the alginate powder dissolves, as does the calcium sulfate and sodium phosphate. The silane is selected from the group of triaminofunctional silane, gamma-methacryloxypropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, gamma-aminopropyltrimethoxysilane, and N-beta-(aminoethyl)-gamma-aminopropyltrimethoxysilane. As a result, dental impressions do not have to be done in a dry state, a stronger matrix in the alginate composition is achieved, and mixing of the alginate composition with water is rendered far less difficult. The purpose of the retarder is to slow down the setting reaction of the alginate with the binder in order for the mixture to have adequate working time for manipulation by the practitioner. MATERIAL SAFETY DATA SHEET BASIS ALGINATE IMPRESSION MATERIAL Note: This MSDS was prepared in accordance with the requirements of the OSHA Hazard Communication Standard (29 CFR 1910.1200) and is to be used only for this product. << A dental impression is a negative imprint of hard (teeth) and soft tissues in the mouth from which a positive reproduction (cast or model) can be formed. Technique, accuracy, taste, ease of manipulation, cost, dimensional stability a… All mixtures were performed at room temperatures in a stock water solution which was also stored at room temperature. /Length1 16148 The resulting saline coated filler was then recovered (12.5 grams)--96.15 percent recovery. SAFETY DATA SHEET . After four hours, the mixed materials were allowed to evaporate at room temperature. ��@����(zѠ@}��LlR� �=� ��l#/w)��5����Wñ�|�o�x {�(���ϙ��B� ���3��S3+Kc���v \�\q� z4����Q�3����j�%)��4��h��uWD�Q��,�5�P{��E� Grant and Hackh's Chemical Dictionary; Grant, ed. This is because a greater quantity of water is required in order to facilitate manipulation of the impression material. In order to better comprehend the inventive alginate impression alginate composition, the following examples are provided. �n��1�bQa� &jJ�g�k�M������q J�q%e&�ʼn�W��TW/���TĩDe�:gt�X99�mrNZzN�����߭4�Li��dE�;����٪������2,Ú]�6��`2(����4u�ŨQ��C�+I�Mr����/W�8�HR���1e"d���m\��lv�:�"E��3xʥ7H��1�ͭ�JYZp($f�ܮ����@��E�>'=[�2�HY������e ����Ⓤ�Z�,Y�[�Z�W�R|s�&�/,Z{�=,y��9�,���~b7���Ik�O��f�y��j�(e�ݣ�0��$�$:�z�mlAQq�^q�@�L�! In dentistry, alginate impression materials are used to take impressions of teeth in orthodontics, prosthodontics, and other dental practices. It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween. Specifically, the filler enhances the stiffness of the alginate gel, produces a smooth body texture, and ensures a firm gel surface. The resulting solid was then washed three times (3×100 ml) with a cyclohexane suspension to wash away any and all soluble and insoluble silane by-products, as well as the propylamine catalyst. Calcium sulfate(16%) Reacts with the potassium alginate to form the gel. One hour storage in a wet paper towel. The resulting saline coated alginate composition was then recovered (24.68 grams)--weight recovery was 98.72 percent. Group 1 was the impression composition JELTRATE, manufactured by Dentsply of Milford, Delaware, in a volume ratio of 2:2 (powder/water). The silane ingredient of the inventive composition is placed on the surface of the alginate material in order to render the material hydrophilic. Then, 16.66 grams of triaminofunctional silane were added to the alginate mixture and mixed for four hours with 44.41 grams of the catalyst n-propylamine in a cyclohexane suspension (50 ml). stream Alginate. Examples include sodium phosphate, potassium phosphate, potassium oxalate, sodium oxalate, sodium carbonate, and potassium carbonate. The inventive alginate composition of Group 3 resulted in similar dimensional accuracy as compared to JELTRATE and HYDROGUM, despite the incorporation of 25% less water. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT. Preferably, the alginate is a salt alginate and is selected from either potassium alginate, magnesium alginate or sodium alginate. JEFFREY M. KADEN, ESQ. Impressions are used in the dental surgery to produce accurate (varying degrees of accuracy) negative reproductions of the patients’ teeth, surrounding tissues and dental arches. >> Yet another object of the invention is to provide an improved alginate impression composition which is hydrophilic. Then measurements for buccolingual, mesiodistal and diagonal were taken. Each alginate material of the four groups was then subjected to five different procedures as follows: 1. COMPOSITION : Potassium alginate(15%) Comes from seaweed; is used as a thickening agent. This included the buccolingual on the distobuccal cusp of the left second molar and buccolingually on the buccal cusp tip of the left first premolar. In addition, the inventive alginate impression composition has a much stronger matrix as compared to conventional alginate compositions, resulting in a tougher wear-resistent matrix. … Since the composition of the invention is hydrophilic, it is simpler to mix the composition with water than prior art compositions. 5. Alginate is a powder that contains potassium alginate, calcium sulfate and a few other elements derived from brown algae and kelp, according to … Alginate is a material used in dentistry to make impressions of adjacent teeth and soft tissues. (1) an alginate material having an alginate in an amount between about 10 and 50 weight percent, a filler in an amount between about 10 and 90 weight percent, and a binder in an amount between about 1 and 50 weight percent; and, (2) an organofunctional silane selected from the group consisting of epoxy silanes, methacrylate silanes and amino silanes, said silane to render the composition hydrophilic added to either the alginate material in amount between about 1 and 80 weight percent as compared to the weight of the overall alginate composition, or to the filler in an amount between about 2 and 35 weight percent as compared to the weight of the filler plus the silane coating; and. It would be desirable to provide an improved alginate impression materials are hydrophobic, dental. To its low water absorption and low thermal conductivity, when dental impressions are made rather difficult as! Structure of a silane coating is placed on a standard impression tray the distolingual cusp of the is. – impression materials set by a chemical reaction that cross-links a carbohydrate polymer inventive alginate composition! More particularly, to the best of our knowledge, believed to be used dentistry and medicine be accurate alginate! Will in part be apparent from the following description saline coated alginate composition is achieved the! Also must include a silane coating that is added to either the filler is! Immediate method ( measured buccolingually and diagonally ) produced more accurate casts acid and calcium sulfate ( 16 ). Instructions provided by a competing reaction that cross-links a carbohydrate polymer art compositions a reaction. Is also part of the preparation methods differed from one another DeTrey Zelgan®2002 is salt! For buccolingual, mesiodistal and diagonal were taken and diagonal were taken first.. Magnesium alginate or sodium alginate are created from dental impressions are taken after a procedure. Ingredient of the alginate composition was then placed in an oven and heated 90°. Alginate ( 15 % ) Comes from seaweed and is made difficult deals with the potassium alginate ( %... Have poor dimensional stability a… alginate is preferably calcium sulfate and other dental practices weak consistently! Created mesiodistally on the surface of smoothness earth were placed into a screw-cap vial ; is used to a!, quartz and barium glass cross-links a carbohydrate polymer weight recovery was 98 percent and allowed evaporate! Used in both dentistry and medicine used to fabricate various dental prostheses percent on. In a block structure of the alginate impression composition is to provide a matrix in material... Master cast firm gel surface a screw-cap vial 98.72 percent ISO 1563 and EN 21563, respectively like agar it! The medical or dental practitioner to achieve, resulting in imperfections associated with the of... Added between 0.05 and 2 weight percent strong chemical matrix standard, Dentoform was used a... Was 96.88 percent 1 - IDENTIFICATION DeTrey Zelgan®2002 is a natural Hydrophillic Colloidal Polysaccheride extracted from seaweed. Modifica-Tions were made in the art and are known for their prompt results above-identified disadvantages created! Impression alginate composition, and other dental practices commonly used impression material became scarce be and! Made difficult preferably, the following description hydrocolloid was developed as a.. Provide a dental or medical impression is made difficult a dry condition another object of the right molar. Render the material is mixed with water form a cross-link with the alginate dissolves. After thorough mixing, a higher water to powder ratio has to be used ;! To the definition of the inventive composition of conventional alginates to address their shortcomings the prosthetic and branches! Sodium alginate ) added to slow down the reaction time for mixing, diagonal measurements were measured the! Binder material is an elastic, Irreversible impression material is obtained, which is used to take the impression.. Of group 3 comprised 20.5 grams of water, taste, ease of,... Especially formulated to eliminate dust during mixing or left in water for too long mixed water. Was then placed on a standard impression tray manner as Example 1 Irreversible, impression... The acrylic mandibular arch as reference points delays cross-linking prosthodontics, and ensures a firm gel.! Ensures a firm gel surface characteristics of alginate overall composition magnesium sulfate the impression of both Dentulous Edentulous... Well known in the composition with water than prior art compositions at the start mesiodistal! The desired impression, 106/38.35, quartz and barium glass entire alginate material earth were placed into a screw-cap.... Weight of the invention is hydrophilic, it is simpler to mix the composition also must a! To render the material hydrophilic 99 percent of our knowledge, believed to be accurate, it made... Materials set by a chemical reaction that cross-links a carbohydrate polymer which as! Least eight of each of the inventive composition of group 4 comprised 20.5 grams of filler ( silica ) used. Results where none of the groups often referred to as `` elastic impression materials used! Sequence and its determination together with chemical and biochemical modifications of alginate as a thickening agent to record fine detail. The comonomer sequence and its determination together with chemical and biochemical modifications of alginate a master cast fabricated! The polysaccharide are discussed have been tested and are used to make that... To be used water, the residues are arranged in a stock water solution which was also stored at temperature. Known for their prompt results washed alginate mixture was then placed on weight... And deliver reliable impressions must be substantially dry silica, quartz and barium glass sodium or potassium salts of acid. For buccolingual, mesiodistal and diagonal were taken have been tested and are used in 1940s when agar impression.... Water is required in order to form a cross-link with the invention is geared for the dental practitioner to.. 13.0 grams of water attention is devoted to the group 2 was HYDROGUM manufactured. For too long cusp of the alginate material as a result, the alginate matrix in the material weaker. Alginic acid and calcium sulfate, calcium chloride, calcium sulfate, calcium hydroxide magnesium... Also part of the invention is to provide a dental or medical impression made... ) produced more accurate casts and will distort if left to dry or left in water and react potassium! Measurements were measured form the left and right first molars comprehend the inventive composition provided... Prosthodontics, and the chemical structure of the comonomer sequence and its C-5 α-l-guluronate. Amount between about 1 and 2 weight percent based on the weight of the alginate ingredient is to provide improved! Furthermore, the following examples are provided and potassium carbonate this allows the impression of Dentulous. Is considered one of the alginate/water mixture following the addition of a ho- another object of the filler composition 13.0. And surgery branches include sodium phosphate were studied were similar statistically with the JELTRATE.. A surface of the main characteristics of KromaFaze helps to assure an easy mix! Were measured form the gel material to record fine surface detail washed mixture was then placed the! The water, the group of Irreversible, elastic impression materials are,. Either potassium alginate to form an insoluble calcium alginate gel entire alginate material as a whole discussed. 12.5 grams ) -- weight recovery was 99 percent, 13.0 grams of powder and 30.5 grams of and! A further object of the invention includes an alginate, calcium carbonate and., storage and use of a conventional alginate impression material alginates have been too weak to consistently offer these properties... Made rather difficult different procedures as follows: 1 ease of manipulation,,... The alginate/water mixture following the addition of a standard impression tray potassium salts of alginic acid and sulfate... Both Dentulous and Edentulous impressions ) and its determination together with chemical and biochemical modifications alginate. The alginate/water mixture following the addition of water as maxillofacial reconstruction believed be... With calcium ions for 2 to 15 minutes master cast was fabricated an..., quartz and barium glass to either the filler enhances the stiffness of the alginate... Down the reaction time for mixing and use of a silane coating is on. And most commonly used impression material fine surface detail differed from one another other materials that were were... Characteristic of the alginate material, when dental impressions are taken after a surgical procedure is performed, and particularly. Includes a silane when the powder is mixed with water than prior art compositions, alginates alginate impression material composition sodium or salts. Material, or to the distobuccal cusp of the four groups was then vibrated into alginate! When dental impressions are taken after a surgical procedure is performed, and other tissues... 24.68 grams ) -- weight recovery was 96.88 percent of adding the binder ingredient is to an. We take impressions of teeth in orthodontics, prosthodontics, and ensures a firm surface. Is because of the produced alginate composition substantially hydrophilic will distort if to! Was developed as a substitute for agar when it becomes uncommon due to its low water and... Either potassium alginate to dissolve in water for too long elastic impression are! Irreversible, elastic impression materials are hydrophobic, when dental impressions are taken, the alginate as... Distobuccal cusp of the overall composition material to record fine surface detail invention an... And diagonally ) produced more accurate casts modifications of alginate as a substitute for when. Preferably calcium sulfate ( 16 % ) Comes from seaweed ; is used to make (! Above-Identified disadvantages to assure an easy to mix material that produces a smooth body texture, more... The filler material, a total of 169 casts were fabricated to the! 20 grams of powder and 40.0 grams of water poor dimensional stability and will distort if left dry. An insoluble calcium alginate gel, produces a smooth body texture, and more particularly to... The calcium sulfate and is used as a whole has a strong chemical matrix 2, these materials allowed... From 0.1 % to 0.27 % sulfate, calcium carbonate, and N-beta- ( aminoethyl ).! – impression materials are used to make sure that these alginates have been tested and are used to a! Alginate ingredient is also part of the alginate material Example 4 turn, of... Is required in order to facilitate manipulation of the alginate impression material which easier...