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The tooth #30 of a 47-year-old woman has lower buccal crest (Fig.1-3 ^). To prevent post-extraction buccal plate collapse, closed socket shield (Fig.6,8-10 *) will be conducted in the mesial (Fig.1,4-6 M) and distal (Fig.2,7-10) roots. B: buccal.
Xin Wei, DDS, PhD, MS 1st edition 10/05/2019, last revision 10/05/2019