Biomaterials and Biological Parameters for Fixed-Prosthetic Implant-Supported Restorations: A Review Study

Table 3

Peri-implant disease classification.

Type	Characteristic
Early	PD greater or equal to 4 mm (suppuration and/or bleeding on probing)
	Bone loss of smaller than 25% of the length of implant
Moderate	PD greater or equal to 6 mm (suppuration and/or bleeding on probing)
	Bone loss of 25–50% of the length of implant
Advanced	PD greater or equal to 8 mm (suppuration and/or bleeding on probing)
	Bone loss of greater than 50% of the length of implant