The revolutionary Stela technology is the result of a partnership between SDI scientists and engineers from three leading Australian universities: the University of New South Wales, the University of Sydney, and the University of Wollongong. Stela is more than just a composite; it's a complete end-to-end system, formulated to deliver stronger, more effective restorations.

Stela's Superior Strength

Stela is indicated for class I, II, III and V restorations.

The Stela primer system initiates a rapid snap polymerization to convert monomers into polymer chains. Simultaneously, these chains rapidly and densely cross-link, forming a complex network. This network reliably binds the fillers. The results: impressive mechanical properties.

Stela boasts high compressive strength, which protects teeth from severe occlusal forces, and high flexural strength, which reduces the likelihood of failure due to high stress. The strength of a restoration should always be judged by its combination of compressive and flexural properties, and Stela has the perfect balance of both, outperforming most other composite products.

Source: SDI Research and Development Department
^ Stela Automix

15-second prep: 2-step recovery

Stela is applied with a simplified two-step process: primer, then composite.

While traditional composite systems can take up to 120 seconds to prepare, Stela restorations are ready for placement in just 15 seconds. This is achieved by eliminating the traditional and time-consuming steps of etching, priming, bonding, and light curing. With the two-step Stela system, clinicians benefit from reduced chair times, high patient satisfaction rates, and long-lasting restorations.

Stela has a working time of 1.5 minutes and a self-curing time of 4 minutes.

Your choice: syringe or capsule

Stela is available in both capsule and syringe systems, both used in conjunction with Stela Primer. The universal shade offers a chameleon effect that balances translucency and opacity. This superior effect blends with surrounding tooth structures to produce a flawless finish and esthetic results. Stela is indicated for a wide range of clinical uses, including Class I, II, III, and V restorations, bases or liners, core build-ups, and sealing endodontic access cavities.

The Stela Automix system

The Stela capsule system

One shade: chameleon aesthetics

Unlike many self-curing composites, Stela is formulated without tertiary amines. This additive has been shown to contribute to yellowing of restorations over time. ^1,2 With Stela, clinicians can rest assured knowing their restorations have improved long-term color stability.

Stela is available in a universal shade, developed with a chameleon effect to mimic the shade of surrounding teeth.

Images courtesy of Prof. Dr. Rocio Lazo

STELA BONDING INTERFACE (SELF-ENGRAVING)
SOURCE: SAURO, Salvator et al. 2022 ⁶

Restorations without empty spaces

Stela features an innovative technology that enables a gap-free interface. When light-curing a composite, polymerization begins in the area closest to the light source, resulting in polymerization shrinkage that pulls the restoration away from the cavity walls, creating microcracks. ^3,4,5 Stela does not require light-curing, and Stela Primer contains a catalyst that initiates the polymerization process at the restoration interface. This polymerization sequence alleviates stress to enable a gap-free interface, reducing postoperative sensitivity and the risk of premature failure.

Stela Primer also contains 10-MPD and has been shown to provide superior bond strength over other leading adhesive/composite combinations.

Additionally, Stela contains fluoride, calcium, and strontium and is BPA and HEMA free. Stela offers 308% aluminum radiopacity for easy diagnosis.

Stela is the ideal option for clinicians seeking a high-performance, strong, and reliable restoration that is simple, fast, and doesn't compromise aesthetics. Stela's crevice-free interface and streamlined process reduce sensitivity and increase longevity, resulting in loyal patients and confident dentists.

Stela is an Australian innovation, developed and manufactured in Australia by SDI Limited.

Stela superior bond strength

Microtensile bond strength results
SOURCE: SAURO, Salvatore et al. 2022 ⁶

DOCTOR JOSÉ CEDILLO

Lower first and second molars with defective composite restorations

Caries removed and large Class I cavities prepared

Application of calcium hydroxide to protect the deepest area of a cavity, followed by application of Stela Primer

Restoration completed

"Moving away from incremental techniques and using a chemically cured mass composite allows us to work faster and with a highly reproducible and safer process."

Dr. Eraldo Pesaressi

Doctor of Philosophy (PhD) in Medical Sciences, Associate Researcher at the University of San Martin de Porres, Lima, Peru

Stage 1: Molar with decay

Phase 2: After caries removal and rubber dam isolation

Step 3: Applying Stela Primer

Phase 4: Restoration completed

"I've used Stela with several protocols, including direct, without pulp protection, and it hasn't caused any sensitivity. Thank you, SDI, for sharing these wonderful developments in our profession!"

PROFESSOR DR. GONZALO ARANA GORDILO

Professor at several Colombian universities. International lecturer in biomaterials and dental aesthetics.

Cavity prepared and ready to be isolated with rubber dam

Final appearance after finishing and polishing

“Stela is very easy to apply, and after four minutes, the restoration matched the tooth shade. It polishes very well! A perfect product!”

PROFESSIONAL DOCTOR ROCIO LAZO

Professor of the Specialization Program in Pediatric Dentistry at the Scientific University of the South - Lima, Peru
Co-author of three books on Pediatric Dentistry and several research articles

Cavity prepared and ready to be isolated with rubber dam

Final appearance after finishing and polishing

REFERENCES:

Andrea Kowalska et al. Photoinitiators used in resin-based dental composites: a review and future perspectives, 2021
Andrea Kowalska et al. Can TPO as a photoinitiator replace the “Golden Mean” camphorquinone and tertiary amines in dental composites?, 2022
Hamdi Hosni Hamama. Recent Advances in Posterior Composite Resin Restorations in Applications of Nanocomposite Materials in Dentistry, 2019.
SR Schricker. Polymerization of Composite Resins and Relevant Parameters in Orthodontic Applications of Biomaterials, 2017.
Gary S. Berkowitz et al. Postoperative hypersensitivity and its relationship to preparation variables in class I resin-based composite restorations: Results from the PEARL (Practitioners Engaged in Applied Research and Learning) network. Part 1. Compend Contin Educ Dent. 2013 Mar;34(3):e44–e52.
Salvatore Sauro et al. Microtensile bond strength and interfacial adaptation of two bulk-fill composites compared to a conventional composite restorative system, 2022.

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