Hello.. Im a dentistry student.. I just wanted to share this to you.. My uncle is 79 years old and in feb he is going to be 80.m He was telling me to reffer him to a oral surgeon who does dental implants because he wants to have implants.n My uncle has 4 teeth left upper left central incisors, lower left first molar,lower, right canine, lower right central incisors... I brought him to one of my professors who has a clinic near school. she is a oral surgeon. she said in my uncle's age implants is not adviceable anymore but instead just dentures. My uncle has 4 teeth left but the dentist extracted it. Because it is useless already. you cant use 1 molar for eating. before the dentist will extract a tooth they will look for its function first. we waited for 1 month until my uncle's gums healed and he had his complete denture. =)