Visagaa Publishing House, the publisher of 
Dental Research Today is a subscriber member to the 
PORTICO digital preservation. Dental Research Today ensures the perpetual availability of all published information. The ITHAKA's 
PORTICO digital preservation programme enables the academic community to employ digital technology to preserve the intellectual record and improve research and teaching in sustainable ways. 
The 
PORTICO archive currently contains more than 125 million preserved archival units (articles, books, etc) from a total number of 949 participating publishers.