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A 46-year-old man presents with toothache in the lower left 2nd molar (Fig.1). In contrast to the 1st molar, the roots of the 2nd molar are converged with a thin septum in between. There is periapical radiolucency. After extraction, the socket should be basically single and large.
Xin Wei, DDS, PhD, MS 1st edition 12/22/2014, last revision 12/22/2014