In old age, tooth loss leads to significantly reduced social participation in society, while maintaining a minimum of 20 teeth has the opposite effect and leads to a significant improvement and therefore more frequent social participation.

In this study, non-surgical treatment of peri-implantitis was only successful in 25% of cases and was adversely affected by a medical history involving periodontitis and smoking, inadequate oral hygiene and a wide implant diameter.

The prevention of peri-implant diseases is the best treatment and the peri-implant soft tissue can play a decisive role here; for this reason, the team should discuss if there is a need for treatment in patients with a lack of keratinised mucosa (i.e. < 2 mm width of keratinised mucosa).

A very high percentage of patients had a positive experience of implant treatment and most patients were very happy with the result; however, frequent points of criticism were the treatment costs and the cleansing ability.