Patient:A 65-year-old female complained of masticatory and esthetic disorders. We diagnosed that five teeth were not available. This patient had a few remaining teeth following tooth extraction, so that prosthetic treatment with the cone-crown-telescope system for this patient was achieved to gain longitudinally stable oral functions.Discussion: We consider that this patient was followed up in good conditions, because she was performed prosthetic treatment using the rigid support concept in the maxillary to repress the movement of a denture substantially, and to protect the abutment teeth and the residual ridge from the pressure of mandibular anterior teeth.
Conclusion:We report that cone-crown-telescope prosthesis for a patient with a few remaining teeth was effective in recovering masticatory system and esthetic restoration.
Key wordscone-crown-telescope prosthesis, a patient with a few remaining teeth, posterior occlusal support
The purpose of this study was to investigate whether the shortened dental arch (SDA) concept had potential risk from the view of the stomatognathic system. Methods: Twenty patients (10 females and 10 males, mean age: 55.9 years) with unilaterally posterior missing teeth were selected for this study. The radiographic observations of bone change in the condyle using Limited Cone-beam X-ray CT, the measurements of condylar positioning during maximal voluntary contraction using a mandibular movement analysis system with six degrees of freedom, and the assessments of questionnaires about patient satisfaction with several oral conditions using a visual analogue scale were performed on these subjects. Results: 1. Abnormal condylar appearances were observed in seven of twenty subjects by radiographic evaluation, and these phenomena coincided with the edentulous side in fi ve. 2. The directions of condylar displacement during clenching varied from superior-posteriorly to superior-anteriorly, and the distances of condylar displacement were signifi cantly larger on the edentulous side than on the dentulous side. 3. Concerning patient satisfaction, problems of pronunciation and mastication were significantly associated with general satisfaction. Moreover, significant correlation was found between masticatory problems and patient age, and between problems of occlusal stability or uncomfortableness and the period of SDA. Conclusions: These results indicate that the SDA concept has potential risks. On the other hand, they could also reveal that patients themselves tend to be satisfi ed with the SDA situations, even if he/she experiences the SDA. Therefore we suggest that the SDA concept may have some problems with discrepancy in prosthetic intervention making.
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