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

Sandrine Abi Rached¹, Carole Chakar¹, Rawad Samarani¹

¹Department of Periodontology, Faculty of Dental Medicine, Cranio-Facial Research Laboratory, Saint-Joseph University of Beirut, Beirut, Lebanon.

Minerva Dental and Oral Science

|June 16, 2023

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Marginal bone loss around dental implants did not significantly differ between Straumann SP and JD Octa systems after one year. Thicker soft tissues, however, were associated with less bone loss for both implant types.

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.

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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.