作者: E. Hausmann , K. Allen , L. Christersson , R. J. Genco
DOI: 10.1111/J.1600-0765.1989.TB00852.X
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摘要: … magnitude of beam angulation deviation from 90" was for maxillary periapical radiographs. … and cej are projected onto an x-ray ftlm at timei such that the projected distances of bone to …