Dentsply Sirona (Astra Tech) Dental Implants — Marginal Bone Excellence
Their Astra Tech Implant System EV is renowned for maintaining marginal bone levels around the implant neck over the long term. This provides excellent aesthetic outcomes, especially for front teeth replacements where gum contours are critical.
Key Technical Features
- OsseoSpeed® surface — fluoride-modified nanostructured titanium, stimulates osteoblast activity
- MicroThread™ neck design — fine micro-threads distribute stress, converting shear to compressive forces
- Conical Seal Design™ — gap-free implant-abutment connection prevents bacterial infiltration
- Atlantis® patient-specific abutments — CAD/CAM custom-milled for optimal emergence profile
- Best-in-class marginal bone preservation — 0.3mm or less bone loss at 5 years
- Proven performance in the aesthetic zone (upper anterior teeth)
Risks & Limitations
Astra Tech EV platform workflow differs from Straumann and Nobel systems — requires provider-specific training. Fewer diameter/length combinations available compared to some competitor systems. Premium pricing consistent with the Big Three brands ($1,700–$2,100 for fixture).
Technical Specifications
| Specification | Details |
|---|---|
| Origin | USA / Germany |
| Headquarters | Charlotte, North Carolina, USA / Mölndal, Sweden |
| Year Founded | 1985 |
| Material | Grade 4 Titanium |
| Surface Technology | OsseoSpeed® — Fluoride-modified nanostructured surface |
| Prosthetic Options | One-position placement, Cement-retained, Screw-retained, Atlantis® patient-specific |
| FDA Status | FDA 510(k) Cleared — Astra Tech Implant System EV |
| Warranty | Lifetime* |
Who Should Consider Dentsply Sirona (Astra Tech)?
Patients prioritizing long-term aesthetic outcomes with front teeth replacements, those concerned about bone loss around the implant neck (peri-implantitis risk), and clinicians who value predictable marginal bone maintenance. The Astra Tech system is the top choice for prosthodontists focused on gingival aesthetics.
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Data Sources
- * Success Rate Source: 10-year RCT: 89.7% survival for OsseoSpeed TX implants (DOI: 10.1038/s41432-024-00974-z, 2024). Prospective study: 100% survival at 10 years for edentulous mandible with immediate load (Dentsply Sirona Implants 2018). OsseoSpeed EV: 92.6% survival over mean 42 months (DOI: 10.11607/jomi.10258). Over 700 peer-reviewed publications. Demonstrated 0.3mm or less marginal bone loss at 5 years.
- * Warranty Source: Dentsply Sirona Implants Lifetime Warranty: covers Astra Tech EV implant fixture against manufacturing defects. Atlantis® abutments carry separate warranty. Terms at dentsplysirona.com.