Peri-implant bone changes in immediate and non-immediate root-analog stepped implants-a matched comparative...

Area of Science:

• Dental Implantology
• Periodontology
• Oral Surgery

Background:

• Peri-implant bone stability is crucial for long-term dental implant success.
• Limited long-term comparative data exists for immediate versus non-immediate implant placement regarding bone changes.
• A 10-year retrospective study was designed to address this knowledge gap.

Purpose of the Study:

• To evaluate and compare peri-implant bone changes over 10 years.
• To assess bone remodeling around immediate implants versus matched non-immediate implants.
• To utilize a specific measurement protocol for accurate bone defect assessment.

Main Methods:

• A retrospective study involving 133 patients and 174 dental implants.
• Matching of immediate implants (IM) and control group (CG) implants based on length, diameter, site, and patient gender.
• Radiographic assessment of coronal bone defect (CBD) using digitalized images.

Main Results:

• Initial statistically significant differences in CBD were observed at implant insertion.
• After 10 years, the median CBD increased from 0 mm to 1.7 mm in the control group.
• The median CBD in the immediate implant group increased from 0.7 mm to 1.5 mm over the 10-year period.

Conclusions:

• Both immediate and non-immediate implant placement protocols result in similar long-term peri-implant bone loss.
• The study indicates comparable outcomes for bone levels around dental implants regardless of immediate or delayed placement.
• These findings contribute valuable long-term data to the field of dental implantology.