Living in Ontario, ( we live in Hamilton) one day your child comes home with a letter from school saying that cavities have been found and you need to have them looked after. Parents, please do not take this lightly. Go to your dentist immediately and have the proper treatment done. You will be given a form that has to be signed by your dentist at the beginning of treatment and more importantly at the end of treatment. Here is the important part. If the proper authorities do not get that form signed off for dental treatment completed then your case may be referred to Children's Aid and they may start an investigation for neglect. Once that ball starts rolling it is definetly not a pleasurable situation that your familty may find itself in.
One more small note, if you never receive a letter from your children's school regarding your child's teeth do not assume that they have been checked and that everything is OK. The exams at school are superficial and do not include x-rays. They will only catch the largest gaping cavities. Cavities that would be seen in a more comprehensive exam with x-rays would not be picked up and your child could still have many cavities waiting to give them pain.
This post is in red because I think this information is really important and many parents don't understand the gravity of that innocuous letter they received from school. Having said that, parents must also understand that not checking for and treating dental decay in their children's teeth is neglect.
I am adding the following link so any of you can clarify any questions you may have regarding child abuse and/or neglect. http://www.oacas.org/