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.
Clenching or grinding your teeth can put too much force on the teeth, causing gums to recede. Crooked teeth or a misaligned bite. When teeth do not come together evenly, too much force can be placed on the gums and bone, allowing gums to recede. Body piercing of the lip or tongue.