For dental advertising Google adwords is a popular option to promote your services and needless to say the competition for single words and small phrases is fierce which can drive up your advertising costs tremendously. It is an efficient way of advertising though? That is debatable because research shows that the serious buyers usually type in longer more specific search phrases. For your dentistry practice for example the bidding would be very heavy for terms like ‘dentists’ and ‘dentists Los Angeles’ for example. However take a term like ‘dentists in Los Angeles specializing in veneers’. A phrase like this would not cost much and also would be something a serious client types into google. It would be more efficient for you to type in a long phrase or a long tail phrase as it is otherwise called.