I work for the school dental service and can assure you that the information that you have been provided with is without doubt incorrect. Public dentistry provides basic dental treatment e.g. relief of pain, examinations, fillings, extractions. The treatment is all carried out by qualified dental surgeons or 5th year dental undergraduates about to qualify under the supervision of qualified dental surgeons. A dental technician makes prosthesis such as crowns & dentures and does not carry out any form of dental treatment.
Furthermore, there are specialist paediatric dentists who have undertaken a further 3 years study. Within the public system these practitioners practice at the Women & Children's Hospital. However, the main bulk of their work is carried out at their own private practice. I can assure you that these dentists are not "simply masquerading as children's dentists to make a quick buck". I have worked with them and the extra-training and knowledge required to obtain this post-grad qualification is extensive. Specialist paediatric dentists are particulalry suited to those children who have complex medical historys. Dentist's that haven't undertaken this post-graduate qualification but have attended university for 5 years work within the school dental system seeing children. They don't claim to be children's dentist. They simply work within a system that provides a service to 0 - 18 year olds. Hope that helps make things clearer for you. Regards.