What Types of Teeth Can Porcelain Veneers Be Placed on?

As long as the bite is not changing, a veneer can be placed on any tooth, including molars and premolars.  If the bite is changing (opening up; distancing the nose from the chin) then a full crown or onlay would be needed on molars and premolars.

When doing smile makeovers, most cases are veneering from premolar to premolar, sometimes including the molars.

As long as there is adequate enamel and tooth structure as well as proper occlusion a veneer should be able to placed on the teeth.  Canine, bicuspids and molars can accept veneers. 

As long as the tooth has adequate enamel and structure, a porcelain veneer can be placed on it. Even more important, however, is the occlusion, or the way the upper and lower teeth meet eachother. That really has to be taken into account. That being sais, Porcelain Veneers CAN be placed on canines, bicuspids and molars, as well as on anterior incisors.

Theoretically porcelain veneers can be placed on any tooth in anterior or posterior area. Usually, for better aesthetic result the veneers are placed on all anterior teeth and in majority of the cases the premolars and molars are covered with onlays, that can provide better retention. The problem with placing veneers on molar teeth is the high risk of fracture and falling off due to excursive (side) movements of the jaw. Depending on the condition of the posterior teeth crowns can sometimes be a better, more long-term option.