Both groups of restorations were comparable in appearance and only one case of secondary caries was noted for each material. No significant difference between the two materials was observed for any evaluated category. A wide range of materials can be used as temporary restorative materials and each has advantages and disadvantages. The author concluded that although none of the materials met all the ideal requirements of a temporary material, the MGI offered the most promise for military field use. The influence of dental unit design on percutaneous injury.
Percutaneous injuries are a significant occupational hazard in dentistry.
Studies indicate that most of these injuries occur extraorally and frequently involve dental burs. The duration of the prospective diary was 30 workdays, with 236 survey respondents. Confidentiality of survey responses was emphasized to all participants. The results of this study demonstrated there was no statistically significant difference in the incidence of percutaneous injury between the users of conventional style dental units and users of the European-style unit. Interestingly, ninety percent of the participants who experienced a percutaneous injury in this study chose not to report the incident.