*3.1.1.3 Peri-implant probing depth*

Probing is an important and realistic diagnostic indicator for monitoring the peri-implant tissues. The probing force required is around 0.2–0.3 N [47] and should always be measured using a periodontal probe from the mid-aspect of the mesiobuccal, buccal, distobuccal, mesiolingual, lingual, and distolingual surfaces of the implant. Probing depth for an implant having a supraosseous platform with healthy mucosa is around 2–4 mm [48]. If the implant had been placed infrosseoulsy the probing depth may be slightly higher. However, an increase in clinical probing depth associated with bleeding on probing should be viewed as signs of peri-implant disease.
