1. Approximal carious lesions. A comparison of the radiological and clinical appearances;Rugg-Gunn;Br Dent J,1972
2. Diagnosis of approximal caries: radiographic versus clinical examination using tooth separation;De Araujo;Am J Dent,1992
3. A clinical and microbiological study of approximal carious lesions. Part 1: the relationship between cavitation, radiographic lesion depth, the site-specific gingival index and the level of infection of the dentine;Ratledge;Caries Res,2001
4. A study of the carious lesion utilizing radiography, polarized light microscopy, and scanning electron microscopy;Waggoner;Quintessence Int,1984
5. Can radiographic criteria be used to distinguish between cavitated and noncavitated approximal enamel caries?;Kogon;Dentomaxillofac Radiol,1987