Dental and oral diagnosis expert system is expert system which was designed
as assist tool to diagnose kind of dental and oral diseases especially in human. This
expert system was made to give solution to society who want to consult before doing
examination with dentist. This expert system was developed by using programing
language PHP and database MySQL. Meanwhile, method of drawing conclusion in
this expert system was method of inference forward chaining. This system display the
choices of indication which can be chosen by user. In which each indication will
bring user to the next indication choices till get the final result. In the final result of
this expert system will display the name of disease, indication, definition and
solution.