Radiographic marginal bone level evaluation around two different tissue-level implant systems: a one-year prospective...

Area of Science:

• Dental Implantology
• Periodontology
• Oral Surgery

Background:

• Marginal bone loss is a key factor in dental implant evaluation.
• Understanding factors influencing bone loss is crucial for long-term implant success.
• Tissue-level implant systems are commonly used in posterior jaw restorations.

Purpose of the Study:

• To compare radiographic marginal bone level changes between two adjacent tissue-level implant systems (Straumann SP and JD Octa).
• To assess the influence of implant macro-geometry and vertical soft tissue thickness on marginal bone loss.

Main Methods:

• A comparative study involving seven patients and 18 adjacent implants (Straumann SP cylindrical vs. JD Octa tapered).
• Vertical soft tissue thickness was measured intraoperatively.
• Standardized intraoral radiographs were taken immediately after placement and one year after loading to measure marginal bone level changes.

Main Results:

• Mean marginal bone loss was 0.55±0.5 mm for Straumann SP and 0.39±0.49 mm for JD Octa after one year; the difference was not statistically significant.
• A significant correlation was found between soft tissue thickness and marginal bone loss.
• Sites with thin mucosal tissues (≤2 mm) exhibited significantly greater bone loss compared to sites with thick soft tissues (> 2 mm) for both implant systems.

Conclusions:

• No statistically significant difference in radiographic marginal bone loss was observed between the Straumann SP and JD Octa implant systems at the one-year follow-up.
• Vertical soft tissue thickness was identified as a significant influencing factor on marginal bone loss, irrespective of the implant system used.