The clinical analysis on the failing reasons of 26 cases metal-porcelain prostheses
Objective To explore causes of the failure adout metal-porcelain prostheses.Methods 750 metal-porcelain prostheses in 720 clinical cases such as dentition defect missing,discoloration,abnormity and allotopia etc have been investigated and analysed during 6 years.Result most cases were successfully repaired except 26.Conclusion crown holder dropping,porcelain cracking,secondary decay and gingivitis etc could result in failures of metal-porcelain prostheses.
Background ::: Spontaneously metastatic xenograft models of cancer are infrequent and the few that exist are resource intensive. In xenografts, caliper measurements can be used to determine primary tumor burden and response to therapy but in metastatic disease models determination of the presence of metastatic disease, metastatic burden, and response to therapy are difficult, often requiring serial necropsy. In this study we characterized the development of visceral metastases in a patient derived xenograft model (PDXM) using in vivo imaging.