Abstract: A tracing device for use in the mouth cavity can include an upper jaw plate, a lower jaw plate, and a coupling tool that connects the above jaw plates. The upper jaw plate can be provided with a guide prop stud, a stud installation pore, a tracing pin, a tracing pin installation pore as well as an auxiliary stud. The lower jaw plate can include a guide tracing table, a connection pore, as well as a movement line formation table. Different structures can be made of a magnetic material or associated with a magnet. A lower jaw inducement guide plate can be made of plastic and have three dimensional slopes, and a guide tracing table can have a tracing plate, and can be freely attachable/detachable to/from the main body of the lower jaw plate.

Abstract: A tracing device for use in the mouth cavity in which a center relation and a jaw movement are recorded in the odontology clinic can include an upper jaw plate, a lower jaw plate, and a coupling tool that connects the above jaw plates. The upper jaw plate can be provided with a guide prop stud, a stud installation pore, a tracing pin, a tracing pin installation pore as well as an auxiliary stud. The lower jaw plate can include a guide tracing table, a connection pore, as well as a movement line formation table. The coupling tool can include an upper jaw plate connection part, a lower jaw plate connection part as well as plate interval fixing screw. A part of, or the whole of, the connection pore, stud installation pore, tracing pin installation pore can be made of a magnetic material or associated with a magnet.

Abstract: A modelling liquid used for building up dental porcelain, comprising:(A) a photopolymerizable compound having at least one ethylenically unsaturated double bond,(B) a photopolymerization initiator,(C) a reducing agent, and(D) a polymerization inhibitor.

Abstract: A pallet for handling water-permeable dental porcelain materials comprises a porous ceramic material formed of one or two or more selected from the group consisting of materials based on alumina, aluminium silicate, mullite, cordierite, zirconia and vitreous china and having a grain size of 1.0 to 30.0 .mu.m and a mean grain size of 1.5 to 25.0 .mu.m. The porous ceramic material having fine and even pores uniformly dispersed therethrough, as expressed in terms of a porosity of 15 to 65% and a mean pore size of 0.5 to 10 .mu.m.

Abstract: A tracing device for mandibular movement comprises mainly an upper jaw plate, a lower jaw plate and a coupling device, and the device is able to be mounted in the oral cavity of a patient regardless of whatever the patient is dentulous or edentulous. A recording method therewith can be carried out without elevation of the occlusal vertical dimension of a patient. An accurate recordiing of the jaw relation is taken by recording on the device an occlusal vertical dimension and an incisal guide angle which are settled in a prosthesis, and recording the mandibular position three dimensionally. Another feature of the device is to enable the reproduction of the record on the articulator. By recording the mandibular position and the mandibular movement with the device, the occlusal reconstruction based on the full mouth rehabilitation which has been regarded conventionally a most difficult prothesis method is carried out accurately.