Method of making absorbent inserts for absorbing fluid in tooth canals
AssigneeNathan Li
InventorNathan Y. Li
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Abstract
A method of making an absorbent insert for absorbing fluid in a root canal. Forming a body in a pre-compressed state prior to use, having a matrix of absorbent material. The matrix of absorbent material swells upon absorbing fluid after the body in the pre-compressed state has been inserted into the root canal. In the forming process, a sheet of absorbent material is compressed to form a compressed sheet, which is cut and shaped to form an insert. Cutting and shaping is by using complementary split mold halves which together define a cavity corresponding to the body of the insert and stamping the compressed sheet with the split mold halves to form the body of the insert.
Claims18
A method of making an absorbent insert for absorbing fluid in a root canal, comprising forming a body in a pre-compressed state comprising a matrix of absorbent material, wherein the body is in the pre-compressed state prior to the insert being inserted into the root canal, and wherein the matrix of absorbent material swells upon absorbing fluid after the body in the pre-compressed state has been inserted the root canal,
- wherein the forming step comprises:
- providing a sheet of absorbent material;
- compressing the sheet of absorbent material to form a compressed sheet;
- and
- cutting and shaping the compressed sheet of absorbent material to form at least one insert;
- and
- wherein the cutting and shaping step comprises:
- providing complementary split mold halves, which together define at least a cavity corresponding to the shape of the body of the insert;
- placing the compressed sheet of absorbent material between the split mold halves;
- and
- stamping the compressed sheet with the split mold halves to form the body of the insert, wherein the absorbent material is in the pre-compressed state after stamping.
Dependencies are inferred from the claim text.