IMPERIAL HIGHWAY & PIONEER BOULEVARD PROJECT - Week of March 26, 2017. Project Information. Improvements: HOV lane, one mixed-flow lane in each direction, interchange modifications at San Antonio Avenue undercrossing, Imperial Highway undercrossing, Pioneer Boulevard undercrossing and Orr and Day Road. Start Date: 2013.
Infections can cause mouth ulcers. Herpes simplex often causes mouth ulcers in children and some adults. Other less common viral and bacterial infections may cause mouth ulcers, but this is rare. Mouth ulcers can be caused by anaemia and occasionally by other blood disorders, and some skin or gastrointestinal diseases.
Mouth ulcers can be caused by a wide range of factors including: 1  accidental biting of the cheek. 2  injury from a toothbrush (such as slipping while brushing) 3  constant rubbing against misaligned or sharp teeth.  constant rubbing against dentures or 1  braces. poor oral hygiene.  burns from eating hot food.