2Christensen GT.A new challenge-root caries in mature people. [J]J Am Dent Assoc 1996, 127 (3) :379
3Iacopino AM and Wathen WF. Geriatric prosthodontics:An Overview. Part II. Treatment consiedrations. [J]QuinTessence [nt 1993,24 (5) :353
4Swift EJ, Hammel SA,perdigao J. prevention of root surface caries using a dental adhesive. [J]J Am Dent Assoc 1994,125(5) :571
5Fejerskov O, Luan WM, Nyvad B,et al. Active and inactive root surface caries lesions in a selected group of 60 to 80-year-old. [J]Dental Res 1991,25 (5) :385
6Sheth J J, Jensen ME,Wefel JS,et al. Restoration of root caries with dentinal bonding agent and microfilled composite resin: 1-year clinicel evaluation. [J]Gerodontics 1998,4(1):71