When bonding becomes a science: Adhesive cementation of restorations is a critical step in dental treatment. Yet the foundation of this process — surface preparation — is often performed by feel rather than by science. If done incorrectly, the bonding strength can be compromised: the restoration may detach from the tooth, requiring re-cementation, which is inefficient for both dentist and patient. Uncontrolled parameters can also lead to loss of retention and, in the worst case, unnecessary remakes.
Why sandblasting deserves more control
For materials like zirconium oxide that cannot be etched, targeted sandblasting is essential. Studies show that pressure, particle size, and distance significantly influence bonding strength. Excessive energy input can even compromise flexural strength.
The Basic prebonder: From lab knowledge to clinical solution
With BASIC prebonder, Renfert brings a fine sandblasting unit to the dental office which was developed in collaboration with the Ludwig Maximiliam University in Munich. The goal: to establish sandblasting as a reproducible, scientifically validated process rather than a variable routine.
What makes this unit better
- Validated pressure range (0.6–1 bar) with precision manometer
- Prebonder control tip for a constant 10 mm distance
- Jet nozzle for uniform energy distribution without hotspots
- Control pad for quick verification of sandblasting energy
- Matching abrasive: Prebonder surface pro with defined grain structure
More than technology: A system for safety and efficiency
Basic prebonder is not a lab all-rounder but a clinical specialist. With an ergonomic handpiece, color-coded system, and modular tank design, it offers flexibility and precision for day-to-day work —from crown preparation to denture cleaning.
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Learn more about the development, technology, and clinical relevance of Basic prebonder in this article published in the "Quintessenz - das Magazin" issue 6/2025, by Quintessenz:
(German only - Basic prebonder: First fine sandblasting unit for surface conditioning prior to definitive cementation)” by Annett Kieschnick
