A to Z: Oral Apthaeenparentshttps://kidshealth.org/EN/images/headers/P-khAZDictionary-enHD-AR1.jpgSee Apthous Ulcers (Canker Sores).oral aphthae, canker sores, aphthous ulcers, nutritional deficiencies, mouth injuries, lip biting, emotional stress, folic acid, vitamin B12, iron02/18/201304/10/201904/10/20190133bbfb-0f21-4256-a2a3-6f856ce458c5https://kidshealth.org/ws/RadyChildrens/en/parents/az-oral-apthae.html/<p>See: <a href="https://kidshealth.org/ws/RadyChildrens/en/parents/az-apthous.html/">Apthous Ulcers (Canker Sores)</a></p>kh:age-allAgesOrAgeAgnostickh:clinicalDesignation-dentistrykh:clinicalDesignation-generalPediatricskh:genre-dictionarykh:primaryClinicalDesignation-generalPediatricsOhttps://kidshealth.org/ws/RadyChildrens/en/parents/dictionary/o/b2d013ce-22c0-46dc-86ab-548a92a2de71