This is a Bush built in single oven...
The general case is that - doors can very easily be removed for cleaning and maintenance.
The general case is that oven doors have an inner glass and an outer glass - a safety feature.
The general case is that the outer glass is fixed and the inner glass can be removed for cleaning if necessary.
The general case is that the glass doors of ovens are not glued in place - they would be difficult to remove for cleaning if they were glued in.
You will probably not have to buy a new door.
Good Luck...
December 2015