Method for making readily reshapable dentures

A method for manufacturing an article used in producing an artificial denture comprising the steps of:

• A. positioning a first composition in a mold and partially filling a cavity contained therein,
• B. rotating said cavity of said mold at a speed to centrifugally cast a second composition within said cavity,
• C. adding a quantity of said second composition as said mold is rotating so as to fill at least a palatal portion of said cavity, said second composition comprising a curable mixture of a polyacrylic powder and a plasticized liquid monomer which upon curing becomes rigid but not completely polymerized and therefore capable of being subsequently remolded with finger pressure, and
• D. curing said second composition in said cavity to integrally join said compositions together and to obtain a rigid frame structure whereby in producing said artificial denture said second composition including said palatal portion is remoldable at or above room temperature with finger pressure so as to selectively conform to desired portions of an oral cavity and said frame portion comprised of said first composition concurrently remaining rigid.

A method for manufacturing an article used to produce an artificial denture comprising the steps of:

• A. providing a mold separable into two sections and having a cavity therein,
• B. positioning a set of artificial teeth in said cavity of said mold,
• C. coupling said set of teeth together by a first composition partially filling said cavity, said composition comprising a curable mixture of a first polacrylic powder and a liquid acrylic monomer so as to form a frame with said teeth partially extending therein, said first composition becoming polymerized upon curing so as to remain rigid thereafter,
• D. rotating said mold with said artificial teeth contained in said cavity,
• E. adding a quantity of a second composition to fill at least a palatal portion of said cavity during rotation of said mold so as to centrifugally cast said second composition in said palatal portion of said cavity, said second composition comprising a curable mixture of a second polyacrylic powder and a plasticized liquid monomer which upon curing becomes rigid but not completely polymerized and therefore capable of being subsequently remolded with finger pressure, and
• F. curing said first and second compositions in said cavity to integrally join same together and to obtain a rigid frame structure from which said teeth depend, whereby in producing said artificial denture said second composition is remoldable with finger pressure at or above room temperature so as to closely conform to desired portions of an oral cavity and said frame portion comprised of said first composition concurrently remaining rigid.

A method for manufacturing an artificial denture comprising the steps of:

• A. providing a mold separable into two sections and having a cavity therein,
• B. positioning a set of artificial teeth in said cavity of said mold,
• C. coupling said set of teeth together by a first composition partially filling said cavity, said first composition comprising a curable mixture of a first polyacrylic powder and a liquid acrylic monomer so as to form a frame with said teeth partially extending therein, said first composition becoming polymerized upon curing so as to remain rigid thereafter,
• D. rotating said mold with said artificial teeth contained in said cavity,
• E. adding a quantity of a second composition to fill the remainder of said cavity during rotation of said mold so as to centrifugally cast said second composition in said cavity, said second composition comprising a heat-curable mixture of a second polyacrylic powder and a plasticized liquid monomer which upon curing becomes rigid but not completely polymerized and therefore capable of being subsequently remolded with finger pressure,
• F. maintaining said rotating of said mold until said adding of said second composition into said mold has been completed,
• G. curing said first and second compositions in said cavity to integrally join same together and to obtain a rigid frame structure from which said teeth depend,
• H. heating said frame such that said second composition is readily remoldable with finger pressure to closely conform to portions of the oral cavity of the person's mouth, said first composition concurrently remaining rigid,
• I. placing an uncured hardenable hard liner material, in fluid form on said frame,
• J. inserting said frame into the human mouth and impression forming the hard uncured material into an impression conformance with the area of the patient's mouth, and
• K. allowing the uncured hardenable liner to harden over said frame, to form a rigid liner which conforms to the features of the area of the patient's mouth.