治療用義歯によるデンチャースペースの回復

Abstract

The number of patients with edentulous jaw suffering from the functional disturbance along with mandible deviation due to alveolar ridge absorption (alveolar bone, gnathic bone) is increasing. Many of these patients tend to be loaded with a type of low (infracclusion) and tiny (lack of denture space) complete denture with irregular occlusal plane (angle and arrangement position) - (negative cycle of conformation and function) .In this regard, the instability of denture (insufficiency of retention and support), the occurrence of mandible deviation (deviation of temporomandibular joint and muscle tonus) and the disagreement of oral peripheral muscle and tongue) were observed. Thus, for patients having functional disturbance generated by the disorder of functional occlusion system related to the combination of muscle-temporomandibular joint?occlusion, we must produce complete denture after providing them with toothless jaw treatment applying treatment denture, rather than producing complete denture only with impression taking and maxillomandibular registration- (from production of complete denture to toothless jaw treatment) .The conditions that curative denture should fulfill are as follows:1. Having retention (four types with impression+two types with curative denture's functional pressure=six types) and support (alveolar ridge load+load with circumoral muscle and tongue) (stability) ;2. Adequate occlusal plane (taking into consideration function and harmonizing with living organism) ;3. Denture space satisfying muscular retention and balance of occlusion (height x width=denture space) ;4. Compatibility to mucous membrane (taking into consideration masticatory mucous membrane, ratio of overlying mucosa and characteristics) ;5. Artificial tooth selection and arrangement attaching importance to the stability of denture and eating and swallowing functions;6. Stabilized mandibular position.Meeting the above conditions will ensure functional improvement in the course of morphological recovery. Further improvement of function should apparently complete the conformation leading to the reconstruction of stomatognathic function- (positive cycle of conformation and function) .I would like, on this occasion, to explain the recovery of denture space applying curative denture in toothless jaw treatment.