Rating Comparative Microbiology of Cell Populations Present Around Teeth Affected by Periodontal Disease and Implants Affected by Peri-implant Disease.

Harvested via sterile paper points, for endodontic use, the sulcular fluid present around a dental element affected by periodontitis, and, in the same patient, the fluid present inside a peri-implant sulcus of a implant affected periimplantitis. If more implants are considered affected by perimplantitis, partecipant will choose the worst as sample site. The same principle will be followed in the case of the tooth affected by periodontal disease. The samples must be underwent to bacterial genomic meta-analysis for the precise identification of bacterial. For a better comparation of the flora, even a healthy tooth from the same patient will be choose like test site and a gingival crevicular fluide will be harvested on it.

The investigators think that the perfect knowledge of the pathogen species is the starter point from a correct therapeutic strategy. But is really important take in mind the individual characteristcs of oral microflora.

The data to be noted at the outset are:

Signs and symptoms of periodontal disease, with precise framing within the Armitage 1999 Classification, and peri-implant disease. For the aim of the study definition of perimplantitis concern an implant with a 4 mm minimal probing depth with bleeding on probing and or suppuration (BOP and Supp) and radiographic bone loss (BL).

Evidence of BL recorded in order of definition of 8th European Consensus Conference of Periodontology Working group 4: BL > 2 mm from the expected bone level if a preliminary rx was absent; Rx 2-3 times the SD of the measurement record (1-1,5 mm) in case a preliminary rx was present.