A Houston family is preparing a lawsuit against a local dentist after their child suffered brain damage from multiple seizures during the visit. Attorneys say the seizures were brought on by the use of several sedatives and a sometimes controversial restraint device. "In essence what happened is this child was chemically and physically suffocated,” said Jim Moriarty the attorney for the family of 4-year-old Nevaeh Hall. "This child suffered massive brain damage during that time period and that didn’t have to happen."