PubMed
PubMed comprises more than 24 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
Suggested hints: do a basic search first, then set filters to subset “Dental Journals” and dates to articles published in the last 5 years. Most articles in PubMed are not full-text, but just show the abstract describing the article—however more full-text articles are becoming available for free.