Abstract
The conical telescopic system (Konuskronen) developed by Körber, as ridged support retainers for removable partial dentures, has rapidly increased popularity in Japanese dentistry because of its many clinical advantages.
In spite of these advantages, this system still poses some problem in its clinical application. One of them is the necessity of highly skilled technique in adjusting the outer crown to the inner one to control the retentive force. Patients often complain that they can not remove the denture by themselves. On the contrary, some dentures are easily drifted in the oral cavity. Every prostheses should stay in place tightly during function, and should be able to be removed easily in need. If the patient has an effective means to remove the prosthesis, a very rigidly supported denture can be provided.
For this purpose, a specific denture remover has been developed introducing the impact force mechanism which is very effective to separate these telescopic systems. As the remover is designed very compact, it is easy to carry with the patient.
From the fundamental experiment and clinical trials, this new denture remover has been found to be a very useful apparatus.
