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The Multilayer Flowable Injection Technique for Highly Esthetic Restorations.
Yolanda M Liaropoulou1, Ana K Jiménez1, Francesco Chierico2
1Department of Restorative Dentistry, School of Dentistry, International University of Catalunya, Barcelona, Spain.
Summary
This study presents a new multilayer injection technique for direct composite restorations. This method enhances esthetic outcomes for anterior teeth with minimal tooth preparation, offering predictable and minimally invasive results.
Area of Science:
- Dentistry
- Restorative Dentistry
- Digital Dentistry
Background:
- Traditional flowable injection techniques can be challenging for achieving optimal esthetic outcomes.
- Direct resin-based composite restorations offer a minimally invasive approach to tooth restoration.
Purpose of the Study:
- To introduce and describe an esthetically enhanced, multilayer flowable injection technique.
- To demonstrate the application of this technique for restoring multiple maxillary anterior teeth.
Main Methods:
- A fully digital workflow was employed, including digital wax-up and virtually guided dentin cutback.
- Customized clear polyvinyl siloxane indices were fabricated from 3D-printed models.
- A multilayer approach using these indices was applied for direct resin-based composite restorations.
Main Results:
- The technique facilitated predictable transfer of digitally planned tooth shapes and volumes.
- Highly esthetic and minimally invasive direct restorations were achieved.
- Minimal to no tooth preparation was required.
Conclusions:
- The multilayer injection technique enables precise replication of digital designs for esthetic restorations.
- This updated technique allows for predictable and tooth-structure-preserving fabrication of direct restorations using flowable composites.
