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.
Other possible causes of receding gums include: 1  Poor oral hygiene. 2  Mouth trauma or injury could make the gums to recede. 3  Occlusion problems / Misaligned or crooked teeth. 4  Grinding or/and clenching teeth is also putting teeth under excessive pressure, sometimes resulting in gum recession.eceding Gums. Receding gums (or gingival recession, or gum recession) is called the condition when the gum tissue surrounding the teeth is lost or pulled away, exposing the roots of the teeth.