iNlew and Revised American Standards for Dental Materials
Council on Dental Research
Recognizing the im portance of the A m erican Standards A ssociation as the clearinghouse for standards o n a national and international level, the Council on D ental R esearch subm itted the A m erican D ental A ssociation specifications for dental m aterials to the A m erican Standards A sso ciation for approval as A m erican Standard speci fications. T he A m erican D ental A ssociation was m ade proprietary sponsor fo r subsequent revisions of the specifications accepted by the A m erican Standards A ssociation. T he following includes revisions in A m erican Standard specifications ap proved on A pril 5, 1965.
Z93.11-1965 (ADA 11-1963) Dental Hydrocolloidal Impression Material— Agar Type, Specification for, (ADA 11-1963)............................................................... Specification for dental impression material in gel form containing a reversible agar hydrocolloid as the gel-forming ingredient. Revision of ADA 11-1941, ASA Z93.11-1962. Z93.12-1965 Denture Base Polymer, Specification for, (ADA 12-1964)...................................................... Specification for denture base polymer of any of the following types: (1) poly (acrylic acid esters), (2) poly (substituted acrylic acid esters), (3) poly (vinyl esters), (4) polystyrene, or (5) copolymers, or mixtures of the foregoing polymers. Revision of ADA 12-1953, ASA Z93.12-1962. Z93.14a-1965 (ADA 14-1963) Addendum to Dental Chromium-Cobalt Casting Alloy, Specification for, Z93.14-1962 (ADA 14-1956). ................................... Requirement for marking the type of material on packages and labels of dental materials. Z93.15a-1965 (ADA 15-1963) Addendum to Acrylic Resin Teeth, Specification for, Z93.15-1962 (ADA 15-1956)............................................................................. Modification of testing procedure for determining Knoop hardness.
Z93.2a-1965 (ADA 2-1963) Addendum to Casting Investment for Dental Gold Alloy, Specification for, Z93.2-1962 (ADA 2-1961............................................. Requirement for marking the type of material on packages and labels of dental materials and illus trations of MOD Die.
Z93.16a-1965 (ADA 16-1963) Addenda to Dental Impression Paste— Zinc Oxide-Eugenol Type, Speci fication for, Z93.16-1962, ADA 16-1961)................. Requirement for marking the type of material on packages and labels of dental materials and the eugenol content of the eugenol paste.
Z93.3a-1965 (ADA 3-1963) Addendum to Dental Impression Compound Specification for, Z93.3-1962 (ADA 3-1955)................................................................. Requirement for marking the type of material on packages and labels of dental materials.
Z93.17a-1965 (ADA 17-1963) Addenda to Denture Base Temporary Relining Resin, Specification for, Z93.17-1962 (ADA 17-1961)...................................... Changes in testing procedures for determining Knoop hardness. Specifies the time at which the specimen is placed in the controlled atmosphere.
Z93.5a-1965 (ADA 5-1963) Addendum to Dental Casting Gold Alloy, Specification for, Z93.5-1962 (ADA 5-1961)................................................................. Requirement for marking the type of material on packages and labels of dental materials. Z93.7a-1965 (ADA 7-1963) Addendum to Dental Wrought Gold Wire Alloy, Specification for, Z93.71962 (ADA 7-1962)...................................................... Requirement for marking the type of material on packages and labels of dental materials. 1172
■ JA D A , Vol. 72, M ay 1966
Z93.18-1965 Dental Hydrocolloidal Impression M a terial—Alginate Type, Specification for, (ADA 181964).................................................................................. Specification for dental impression material in powder form containing an alginate as the gel-forming in gredient. Copies of new and revised A m erican Standards are available through the A m erican Standards A s sociation, 10 E ast 40th Street, New Y ork, 10016.