Journal of the Massachusetts Dental Society It is surprising to realize that laser use in dentistry dates back to Dr. Leon Goldman’s initial experiments on dental caries in 1964. For when the topic comes up in conversation among dentists today, the response is typically, “They are still too new,” or “I’m going to wait.” During the past 40 years, dental lasers have slowly been making headway int...

The development of the concepts of initiators and promoters in carcinogenesis necessitates deliberations of evidence from human cancer epidemiology. Recent arguments in favor of mortality data as a more reliable indicator of trends in cancer incidence than morbidity data collected from cancer registries are disputed. Inconsistency in the use of data is pointed out. Comparisons of data from canc...

This tutorial introduces quantum information science, a quickly developing area of multidisciplinary research. The basic idea of the field is to study physical systems obeying the laws of quantum mechanics to obtain promising possibilities for computation, image processing, data transfer and/or high precision detection. Quantum information science is an intersection of mathematics, physics and ...