1 (e) Hermetically sealed foods are to have been processed in commercial food processing establishments meeting requirements of section 14-1.21 of this Subpart. 2  The use of home-canned foods in food service establishments is prohibited.
What causes tooth root resorption? A: A study on external root resorption in the journal Schweiz Monatsschr Zahnmed states that trauma, periodontitis, orthodontic treatment, internal bleaching, cysts, tumors or stimuli from a necrotic dental pulp may cause tooth root resorption.
Sometimes trauma can lead to root resorption, which may be impossible to treat. For a comparison of the two treatments see this page. If saving a dead tooth, by means of root treatment, is the chosen option â further cosmetic and/or strengthening treatment may be needed.