Prosthetic V. Complete denture Edentulous jaws • The transfer of occlusal forces - mucosal only. • Tissue supported (born) denture. • Made usually of the acrylic resin -methylmetacrylate. Sequence of operation Taking impression (alginate the best Sequence of < • Pouring: gypsum model operation Sequence of operation Fabrication of the indivindiual impression tray Acrylic or shellack Sequence of operation Fabrication of the indivindiual impression Acrylic or Sequence of op Ranging with the special low -wax (the functional tray) fusing This procedure is done in the patient. The tray must be accurate without any excess, the wax makes the tray more precise patient moves with his/her lips and cheeks - the function is important After this procedure the tray is called the functional tray Sequence of Functional impression operation The impression after that is called the functional impression. During this procedure patient is moving with his/her lips and cheeks again. The most suitable material is the zinkoxideugenol paste. Sequence of operation Ranging of the impression with the wax The border of the functional impression must be protected using the wax strip Sequence of operation Bite template The bite template is fabricated as usuall The base is made of shellack or acrylic, the wall of wax. Sequence of operation Bite template The bite template is fabricated as usually The base is made of shellack or acrylic, the wall of wax. Sequence of operation Registration of the intermaxillary relationship. The procedure consist of two steps 1. Vertical relationship The neck of the patient is perpendicular to the horizontal plane. The occlusal plane must be parallel to the bipupilar line in the frontal area and to nasoauriculal line in the posterior area. The wax walls must be plain cut, the height is according to the free position of the mandible. After that the height is reduced - 2 mm. This is a vertical relationship Sequence of operation Registration of the intermaxillary relationship The procedure consist of two steps 2. Horizontal relationship The head of the patient is bent backward and he/she swallows. This can halp us to find the horizontal Relationship. After these procedures the wax walls must be put together (with paperclips or wax or other material). Sequence of operation Registration of the intermaxillary relationship Ahter the registration the colour of teeth is choosen using the colour card Sequence of operation The wax pattern of the denture is made This is made of wax - base and acrylic teeth are built According to the registrate using the articulator or occludor. Sequence of operation The wax pattern of the denture is tried out in the patient. The dentist must check the colour, the form and the position of arteficial teeth. Sequence of operation The wax pattern is flasked into a four parts flask using gypsum The teeth are insulated with a special silicone material. The flask is closed and filled with the gypsum completely Sequence of operation After the hardening of the gypsum the flask is opened and the wax removed The wax is removed using hot water. A thin tin foil is put on some places, esp. on palatal suture in order to unload them. The insulating Agent based on alginate is used. Sequence of operation After the hardening of the gypsum the flask is opened and the wax removed The arteficial teeth remain in one part of the flask Sequence of operation After the hardening of the gypsum the flask is opened and the wax removed The arteficial teeth remain in one part of the flask. The resin dought is put into the form Sequence of • The flask is closed and cleap. operation put into a special The resin is polymerized using the 2,5 hours polymerization Schema: 1. During 1 hour reach the temperature 70°C, 2. 30min interrupt heating 3. During further 30 min increase the temperature - reach 100°C 4. 30 min stay on 100°C. After that let the flask cool slowly. The four parts flask Sequence of operation • The denture is taken out finished and polished using special burs, grinding and polishing pastes. Sequence of operation The denture can be tried in.