Radiographic evaluation of crestal bone levels adjacent to nonsubmerged titanium implants

Area of Science:

• Dental Implantology
• Oral Surgery
• Radiology

Background:

• Assessing dental implant success often involves monitoring peri-implant bone levels.
• Previous research focused on submerged implants, leaving a data gap for nonsubmerged types.
• Long-term radiographic evaluation of nonsubmerged implants requires reliable measurement methods.

Purpose of the Study:

• To validate a computer-assisted method for measuring peri-implant bone loss.
• To establish a baseline for future radiographic assessments of nonsubmerged implants.
• To analyze changes in crestal bone levels around nonsubmerged ITI implants from 1 to 2 years post-placement.

Main Methods:

• Standardized periapical radiographs were taken of 80 nonsubmerged ITI implants in 55 patients at 1 and 2 years.
• The distance from implant shoulder to first crestal bone contact (DIB) was measured using a computer-assisted digitizer.
• Measurements were analyzed for different jaw locations (maxillary vs. mandibular, anterior vs. posterior).

Main Results:

• A computer-assisted method for measuring DIB was found applicable and reproducible.
• Significantly greater mean DIB was observed at 1 year in maxillary sites compared to mandibular sites.
• No statistically significant changes in DIB were detected in any location between the 1-year and 2-year evaluations.

Conclusions:

• The computer-assisted DIB measurement is a reliable tool for evaluating nonsubmerged dental implants.
• Initial bone levels differ between maxillary and mandibular sites, with greater loss in the maxilla.
• Peri-implant bone levels remain stable between 1 and 2 years for nonsubmerged ITI implants.