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3. Subcutaneous cervicofacial emphysema and pneumo-mediastinum: a rare complication after a crown preparation;Stanton;Gen Dent,2005
4. A remarkable coincidence in dental surgery [letter];Turnbull;Br Med J,1900
5. Subcutaneous and retropharyngeal emphysema following dental restoration: an uncommon complication;Bavinger;Ann Emerg Med,1982