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Clinical Guide: Class II Restoration on a Mandibular Second Premolar

There are two things dentists seem to always be striving to improve: speed and quality. With cases requiring a sectional matrix system being so common, one area where many clinicians look to save time and boost results is with the sectional matrix system they choose.


For Dr. Brett Richins, the case below perfectly showcases how the Halo™ matrix system enhances his abilities. “The Halo matrix system makes my Class II restorations faster and improves the final result,” says Dr. Richins. “I love the contour of the matrix bands and the way the tines adapt to the anatomy of the teeth. My contacts and marginal ridges have never been better.” He says time saved during restorations is the best part about using the Halo system. “I almost never need to remove flash or modify the occlusal embrasure. I can tell that the Halo system was designed with both the patient and the clinician in mind; it achieves great

results and is easy to use.”

before and after restoration

1. Do preparation on tooth #45 (mandibular right second premolar) with caries removed.

tooth prepared for restoration with rubber dam and metal clamp in place

2. 4.5 mm Halo™ band placed using Halo tweezers to hold the occlusal tab.

dental band being placed with tweezers

3. Small Halo wedge placed from the buccal using Halo tweezers.

dental wedge being placed with tweezers

4. Halo universal ring in place. Ready to begin restoration.

Halo ring in place along with band, wedge and clamps

5. Check adaptation of band. Burnishing is typically not required but can be done if needed in challenging cases to ensure an adequate proximal contact.

checking band adaptation with the help of an instrument

6. Ultra-Etch™ etchant applied for 15 seconds on dentin and cut enamel.

syringe applying etchant to tooth

7. Peak™ Universal Bond adhesive scrubbed into dentin and painted onto enamel for 10 seconds using Inspiral™ Brush tip.

Flowable composite applied over cavity angles to reduce stress

8. Thinned/dried for 10 seconds using 1/4 to 1/2 air pressure. Preparation appeared shiny, and air thinning no longer produced visible movement of the resin. Cured for 10 seconds using the VALO™ X curing light.

After curing flowable, Transcend is added

9. Placed Transcend™ composite Universal Body shade in layers 2 mm or less.

Transcend applied, sculpted and light cured

10. Minimal finishing required after immediate removal of Halo matrix system.

Restorations finalized

11. Finished with the Jiffy™ Naturalpolishing line.

Final aspect

12. Completed restoration with anatomical contact and sole use of Transcend composite’s Universal Body shade.

Buccal view of final result

Transcend universal composite enables clinicians to push beyond traditional limitations and redefine the standards of dental craftsmanship. With its unrivaled blend of technology and performance, Transcend composite marks a new era of esthetic dentistry.

About the Author

Brett Richins, DMD

Dr. Richins studied biomedical engineering at the University of Utah for his undergraduate studies, going onto attend the University of Pittsburgh School of Dental Medicine, where he graduated in 2012. He is passionate about continuing education, and regularly attends courses on subjects like cosmetic dentistry, implant dentistry and sleep and airway health. Dr. Richins is a proud member of the American Dental Association and the Utah Dental Association.

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This article was originally published in the Clinical Life™ magazine: Winter 2025 edition

Clinical Life™ magazine is a premier periodical publication by Clinical Research Dental Supplies & Services Inc. Discover compelling clinical cases from Canadian and US dental professionals, cutting-edge techniques, product insights, and continuing education events.

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