Method for manufacture of a removable dental prosthesis by moulding with the aid of a mould formed by additive manufacture

A method for manufacture of a removable dental partial prosthesis by moulding, said method comprising the following successive steps:

• a step of digitally modeling a prosthesis model, the prosthesis model representing the prosthesis to be produced and comprising a gum part and a tooth part;
• a step of producing a mould from the digitally modeled prosthesis model, said mould comprising upper and lower half-shells, the lower half-shell comprising a first imprint of the tooth part of the prosthesis, and the upper half-shell comprising a second imprint of the gum part of the prosthesis, the upper and lower half-shells being configured to be assembled by juxtaposition against each other, imprints of each half-shell forming by assembly an imprint of the prosthesis, the mould also comprising a positioning member for positioning one of the upper and lower half-shells relative to the other one of the upper and lower half-shells,
• the step of producing the mould including at least successive sub-steps of:
• partial digital modeling of a mould model according to the prosthesis model, followed by
• additive manufacture of at least the lower half-shell according to the mould model;
• and
• a step of producing the prosthesis, including at least successive sub-steps of:
• providing at least one artificial tooth,
• positioning the artificial tooth in an accommodation of the lower half-shell,
• assembling the mould, and
• casting a filling material in the mould,
• wherein the mould is a partial prosthesis mould, the gum part and the tooth part each being partial,
• wherein the positioning member comprises at least one support member configured to support a third imprint of existing teeth, the support member formed of one or more plates and abutments, said plates and abutments mounted on and extending from a support plate, said plates and abutments presenting top surfaces that fit against correspondent lower surfaces of the third imprint of the existing teeth when assembled with the upper half-shell, and
• wherein the positioning member is formed as a complementarity of both of the second imprint of the gum part of the upper half-shell and the third imprint of the existing teeth of the upper half-shell, and of both of the first imprint of the tooth part and the support member of the lower half-shell.