I understand that primarily this extends to General Dentists wanting to advertise that they are somehow specialized in placing implants.  While I concur with the other comments that this skill should require a full residency type education in order to be proficient, my worry also extends to other dental specialty training.  As an Endodontist, I see mostly very difficult root canal cases and surgeries that a General Dentist would not and should not attempt.  Giving any leeway in advertising to patients that although they are "experts" in a certain specialties without residency training is fraud at best.   

Would this even be considered with medical doctors?  Do you go to your family physician for a colonoscopy?  What if he / she took a weekend course a month ago and now advertised that they offered this procedure...would that instill trust or ensure proficiency?