More than four years after Amber Athwal was in a coma and suffered brain damage after a dental procedure, her father says the little girl is showing progress.

Amber Athwal was four-years-old when she was given anesthesia for a dental procedure in September 2016 with Dr. William Mather. She suffered cardiac arrest and was rushed to hospital.

The Alberta Dental Association and College will hold a hearing next month to consider possible sanctions against Dr. William Mather.

A hearing tribunal has found an Alberta dentist "committed serious breaches of his professional and ethical duties" after a young girl was left with brain damage following a dental procedure in 2016.

The Alberta Dental Association and College wrapped up a hearing on Tuesday that looked at the actions of a dentist in connection with the hospitalization of a young Edmonton girl after she was sedated at his office.

For the first time, Dr. William Mather testified Monday at the Alberta Dental Association and College hearing looking into the case of Amber Athwal.

The registered nurse who monitored Amber Athwal during and after her dental surgery said the little girl stopped breathing while she was in recovery.

An Edmonton dentist admitted to three charges following an incident left four-year-old Amber Athwal with brain damage after being sedated. 

A two-week hearing is set to get underway in Alberta's capital to determine if an Edmonton dentist is guilty of unprofessional conduct after a young patient he sedated was later hospitalized and suffered brain damage.

For the first time since she suffered brain damage during a dentist appointment, Amber Athwal's family is showing how far she's come.