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Evaluation of thin-threaded implants primary stability in type IV bone right after maxillary sinus floor elevation: A
Jean-Christophe Coutant1,2,3, Camilla Canepa4,5, Adrien Naveau1,4,6
1CHU de Bordeaux, Pôle de Médecine et Chirurgie Bucco-Dentaire, Bordeaux, France.
Summary
New thin-threaded dental implants show promising primary stability in weak maxillary bone after sinus elevation. These results suggest compatibility with osseointegration, warranting further clinical investigation.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Oral Surgery
Background:
- Primary implant stability is critical for osseointegration, especially in compromised bone.
- Maxillary sinus floor elevation is a common procedure to augment bone height.
- The bone-implant interface characteristics influence initial implant stability.
Purpose of the Study:
- To evaluate the primary stability of novel thin-threaded implants.
- To assess implant stability in type IV bone following maxillary sinus floor elevation.
- To compare stability between different implant lengths and sinus elevation depths.
Main Methods:
- Human cadaver study adhering to CACTUS guidelines.
- Twenty-four maxillary posterior sites with type IV bone and 4mm residual height were selected.
- Osteotome sinus floor elevation followed by simultaneous placement of thin-threaded implants (MagiCore).
- Implants of 11mm (G1) and 7mm (G2) were used with 8mm and 4mm elevations, respectively.
- Primary stability measured using resonance frequency analysis (RFA).
Main Results:
- Average primary stability (ISQ) in mesiodistal direction: G1 = 45.67 ± 3.09, G2 = 38.76 ± 16.94.
- Average primary stability (ISQ) in buccolingual direction: G1 = 43.33 ± 13.23, G2 = 38.47 ± 16.14.
- Both implant configurations demonstrated measurable primary stability.
Conclusions:
- The thin-threaded implants achieved primary stability compatible with clinical osseointegration.
- This was observed even in sinus sites with limited bone contact following augmentation.
- Further clinical studies are recommended to validate these findings.
