A San Antonio dentist’s office is offering free exams and school supplies next week to get families ready for the new academic year. From 10 a.m. to 2 p.m. Saturday, July 20, children and their parents can get exams, X-rays and braces consultations free of charge at Risas Dental at 7895 Culebra Road. Kids under 18 also will receive a backpack full of school necessities while supplies last.