@article{oai:ir.kagoshima-u.ac.jp:00011325,
 author = {長岡, 英一 and NAGAOKA, Eiichi},
 journal = {鹿児島大学歯学部紀要},
 month = {Mar},
 note = {The periodontal tissue, the structure of which has biomechanical suitability, changes reversibly by regenerating the bone by periodontal treatment. However, the structure of the edentulous ridge could be regarded as biomechanical unsuitability because of changing irreversibly with progressive bone resorption. 
To prevent residual ridge resorption, the submergence of root in the alveolar socket and the insertion of hydroxyapatite ceramic implants into the extraction socket are effective. Moreover, the use of solid type ceramic implants is more effective than the particle type. 
In the application of removable partial dentures, the thickness and density of the trabecular bone surrounding the tooth are greater in the tooth-bone type than in the mucosa-bone type. Likewise, the bone resorption at the top of edentulous ridges is greater in the mucosa-bone type than in the tooth-bone type. 
Accordingly, the reconstruction of the atrophied edentulous ridge requires biomaterials, including hydroxyapatite granules, which are useful to reconstruct the maxillary atrophied ridge with the flabby gum. 
This method is effective to recover the ridge shape and the masticatory function. Therefore, it is important for the denture to be supported by the ridge. 
The results of our study on the influence of cross-bite arrangement of complete dentures as related to the bone resorption on pronunciation suggested that pronunciation disorders could be improved over time with denture use. As for the role of the artificial tooth arch (ATA) during swallowing in edentates, the ATA facilitated the function of the tongue to perform skilful movements in food translation during swallowing.},
 pages = {5--23},
 title = {無歯顎の器質的特徴と義歯の機能的役割},
 volume = {32},
 year = {2012}
}