There was no difference in the proportion of deficiencies between elderly who reported a dental visit in the preceding year or not having seen a dentist. A quarter of the prostheses required replacement. The findings from this and the NHANES studies demonstrate that an engaged and recognized prosthodontic dental school faculty continues to be as important now as it was a generation ago. “
“Purpose: The purpose of this study was to assess the performance of an intraoral dental colorimeter. Materials and Methods: In Y27632 vivo repeatability of an intraoral colorimeter was assessed by performing color measurements of 30 individuals’ right maxillary central incisor.
Three consecutive measurements from each individual were made. In the in vitro part of the study, 25 metal-ceramic and 25 all-ceramic specimens were prepared. Five shades of metal-ceramic
and all-ceramic specimens were selected for color determination. A widely recognized in vitro colorimeter was used as the control group for the in vitro performance assessment of the in vivo colorimeter. The color differentiation capability of two colorimeters was compared with the readings obtained from ceramic specimens. ΔE values between shade groups of ceramic specimens were calculated and statistically analyzed with Student’s t-test. The repeatability of the intraoral instrument was evaluated statistically with Intraclass correlation coefficient. Results: The in vivo evaluation results showed that the overall repeatability coefficient values of L*, a*, and b* notations of the intraoral RGFP966 in vitro colorimeter were “excellent.” The color differences (ΔE) calculated between the colorimeters were significant only between shades A1-B1 for metal-ceramic specimens (p= 0.002); however, from 5 of 10 shade couples of all-ceramic specimens, the color differences obtained from the readings of the in vivo colorimeter were significantly different from that of the in vitro
colorimeter (p < 0.001). For all specimens, the differences between 上海皓元医药股份有限公司 ΔE values were within clinically acceptable limits (<3.5). Conclusions: Within the limitations of this study, the intraoral colorimeter exhibited successful in vivo repeatability; however, the color difference detection performance of the device varied depending on the translucency of the specimens. "
“When a screw fracture occurs on a cement-retained, implant-supported restoration, the abutment and restoration are completely separated from the implant’s internal connection. Traditionally, an access hole is drilled through the crown to retrieve the broken screw, and the restoration can be placed again as a screw-retained restoration. This clinical report documents a patient whose broken abutment screw was retrieved from the restoration by burning off the cement and separating from the abutment without drilling an access hole.