Oral cavity has the following functions: mastication (biting, crushing and chewing of food), occlusal (stabilizing of upper and lower jaws), phonetics (making of sounds), psychosocial (living and acting of individual within society) and aesthetic (appearance of orofacial area). All five functions are closely related and have a significant influence on physical, mental and general health of an individual. In today’s world, we are witnesses of fast changes and progress in science and technology, but also in the area of dental prosthetics. Even though there is still a widespread need for conventional, removable partial dentures, there are more and more patients who are expressing their dissatisfaction with their function and aesthetics. The placement of standard implants in strategic positions for retention and support of removable partail dentures has shown some important advantages. Yet, this is not possible in many cases due to the resorption of alveolar ridge and decrease of buccolingual or buccopalatal alveoalr ridge width. Because of their narrow diameter, mini dental implants have a key role in such cases: they assure better retention and support of denture in regards to removable partial dentures, reduce the resorption of distal parts of residual alveolar ridge, decrease the need for invasive procedures and augmentation of the ridge. In addition, mini implants protect the remaining teeth from overburden and falling out, they reduce rotational movements and significantly increase mastication function, as well as the overall satisfaction of patients.