Explain the Crestal Bone Levels

Crestal Bone Levels: Bone levels should be assessed on the mesial and distal surfaces of implants.  Any changes between visits should be documented and evaluated along with clinical evidence to determine if any treatment is required. Due to routine bone remodeling, normal peri-implant bone level is expected to be at the first thread when using two-stage screw-type implants. For other types, the bone level should be approximately 2 mm from the implant platform. The distance from a landmark on the implant to the alveolar bone crest represents a reliable parameter for long-term monitoring in clinical practice.