Injection molding technique performed with Easy Match Flow in anterior mandibular area
Written by Dr. Bonacina Cristiano, DDS MSc
Dr. Bonacina Cristiano, DDS MSc
Bonacina Cristiano graduated in 2016 from the University of Milan-Bicocca (Italy) with a degree in Dentistry & Dental Prosthetics. He continued his postgraduate studies, achiving a Master Course in Clinical Periodontology & Implant Dentistry under prof. Zucchelli at the Alma Mater Studiorum University in Bologna (Italy) in 2021 and a Master Course in Forensic Odontology at the University of Florence (Italy) in 2023. He is a general dentist, mainly focused on adhesive esthetic dentistry, implantology and periodontology. He primarly works in his private practice in Veduggio con Colzano, MB (Italy).
About the case
This is case of a 60-year old male patient showing progressive signs of wear on the lower incisors. I decided to proceed with direct restorations using the injection molding technique, employing Easy Match Flow for its biomimetic behavior and structural properties, which make it suitable even for restorations involving functional and high-load surfaces, such as those of the lower incisors.
Intraoral scans were performed and a digital design of the dental morphology was developed. Two transparent silicone matrices were then fabricated, allowing alternating injection of the dental units and facilitating a more controlled and simplified management of the interproximal spaces.
Before
Challenge
One of the main challenges in injection molding cases with diastemas, such as this one, is the management of the emergence profiles. It is essential to create correct contours and properly polish the interproximal areas to allow effective and adequate oral hygiene procedures.
After
Outcome
Easy Match Flow is a flowable composite with excellent biomimetic properties, even in full-thickness restorations. This flowable composite provides appropriate optical properties, enabling natural-looking results even with a single-shade technique, and offers excellent polishability.
Featured products:
Solventum™ Filtek™ Easy Match Flowable Restorative
Warm shade
3M™ Scotchbond™ Universal Plus Adhesive
Case overview
1. Pre-op labial view
2. Pre-op occlusal view
3. Resin-printed model of the wax-up for the first silicone matrix
4. First silicone matrix for injection of teeth 32 and 41
5. Resin-printed model of the wax-up for the second silicone matrix
6. Second silicone matrix for injection of teeth 31 and 42
7. Isolation with split rubber dam
8. Minimally invasive labial preparation of teeth 41 and 32 to provide a minimum thickness of approximately 0.5–0.7 mm
9. Protection of teeth 41 and 32 with transparent strip matrices, placement of a hemostatic-soaked retraction cord, and air abrasion with alumina
10. Selective enamel etching of teeth 41 and 32
11. Application of Scotchbond Plus adhesive
12. Placement of Teflon tape on adjacent teeth to those being injected
13. Seating of the first silicone matrix and injection with Easy Match Flow Warm, followed by polymerization
14. Removal of the first silicone matrix, followed by careful finishing and polishing
15. Minimally invasive labial preparation of teeth 31 and 42 to provide a minimum thickness of approximately 0.5–0.7 mm
16. Protection of teeth 41 and 32 with transparent strip matrices, placement of a hemostatic-soaked retraction cord, and air abrasion with alumina
17. Selective enamel etching of teeth 41 and 32
18. Protection of adjacent teeth with Teflon tape and application of Scotchbond Plus adhesive
19. Seating of the second silicone matrix and injection of teeth 42 and 31 with Easy Match Flow Warm, followed by polymerization
20. Clinical situation after removal of the second silicone matrix
21. Finishing and polishing using rubber polishers and brushes with polishing pastes
22. Immediate post-operative labial view
23. Immediate post-operative occlusal view
24. One-week follow-up, labial view
25. One-week follow-up, labial view
26. Post-operative control radiographs. Radiographic and clinical evaluation of proper emergence profiles is essential to allow effective and correct oral hygiene procedures.
Manufacturer: Solventum
CE 0123 MD Solventum Filtek Easy Match Flowable
Manufacturer: 3M
CE 0123 MD 3M Scotchbond Universal Plus