%0 Journal Article %T Film and digital periapical radiographs for the measurement of apical root shortening %A El-Angbawi, Ahmed M F. %A McIntyre, Grant T. %A Bearn, David R. %A Thomson, Donald J. %J Journal of Clinical and Experimental Dentistry %V 4 %N 5 %P e281-e285 %@ 1989-5488 %D 2012-12-01 %I Medicina Oral S.L. %~ DeepDyve