spherical large hole that function as a space for suspension system in the core of the orbital pros- thesis were prepared. This hole was drilled using steel round bur (Medin, Joint Stock Company, Vla- chovicka, Czech Republic) to make the spherical space in the part of acrylic core which is adjacent to the oral cavity. The thought whilst making the hole in spherical shape was to have the movement of active part provided in vertical, horizontal and oblique directions in this hole (Figure 4a, b). In order to make this active part, a 0.9 mm round wire (Dentaurum, The Dentaurum Group, Pforzheim, Germany) was taken, and cut in mea- sured length between closed hollow bulb and but- tom surface of acrylic core. The tip of the wire was curved due to contribute the autopolymerized acrylic resin to retain. A spherical shape was giv- en to acrylic resin on the curved tip of wire corre- spond to the large spherical hole prepared before in the acrylic core of orbital prosthesis (Figure 5). Other tip of the wire was attached to the magnet also using autopolymerizing acrylic resin. Tip of the active part with round shaped acrylic resin was inserted into the spherical hole in acryl- ic core. Autopolymerizing acrylic resin was added to the border of the hole to reduce the opening due to keep the active part in. Thus, one tip of the ac- tive part would be in the hole to provide the move- ment in vertical, horizontal and oblique directions during mastication and the other tip with magnet would ensure the connection between the obtura- tor and the orbital prosthesis (Figure 6a, b). Prostheses were tried in place and magnets were controlled if they function properly (Fig- ure 7). Necessary controls were done to confirm keeping the movement of the orbital prosthesis in minimal bounds whilst the patient makes chewing functions and mimic movements. dIscuIon This article describes a different procedure for diminishing the movement between orbital pros- thesis and obturator connecting with magnets by means of an active part. Adhesive systems and spectacle frame are used when orbital prosthesis cannot be retained by osseointegrated implants. With few or missing undercuts, however, mimic motion and sneezing can cause adhesive failure. Thus, the orbital pros- thesis may be attached to the obturator with mag- October 2011 - Vol.5 Soganci, Yalug, Kocacikli nets or buttons.1 The use of magnets is the most efficient means of providing combined prostheses with retention and stability in patients with defor- mities requiring complex rehabilitations.2 Move- ment of the orbital prosthesis can occur during chewing in case the connection with obturator is rigid. In a case report proclaimed by Goiata et al,2 connection between orbital prosthesis and obtu- rator were procured directly by magnets. Due to the excess amount of maxillary bone loss, obtura- tor can lose the stability and move vertically.1 In such cases, movement of orbital prosthesis away from the tissue can occur if the connection is rigid between the prostheses. The prostheses which are rigidly attached by magnets can have reten- tion failure during chewing functions because of this masticatory strain.1 Thus, it is resulted in loss of contact of the silicone prosthesis margins. For that reason, thought to have the benefit of more stable prostheses in this case was to construct an active mechanism which compansates the move- ment during function. Wieselmann-Penker et al1 fabricated a spring-loaded rewinding device for orbital prosthesis to stay in situ during mastica- tion and various mimic movements. With the simi- lar idea the active mechanism is thought in this case to prevent the movement of orbital prosthe- sis. A large spherical hole was prepared in the base of the orbital prosthesis on account of the Figure 7. View of the orbital prosthesis and lip support whilst the obturator is in situ after treatment. 463 European Journal of Dentistry