--- title: "Clinical Guide: Rebuilding a Failed Posterior Restoration" description: Step-by-step protocol to rebuild a failed posterior composite using the Halo™ sectional matrix and Transcend™ universal composite. image: https://blog.ultradent.com/hubfs/Halo-Clinical-Blog.jpg --- - [Products & Ordering](https://www.ultradent.com/?__hstc=233546881.6ce3c127e0d8e0b142ccbf3742853f08.1583280684877.1583280684877.1583280684877.1&__hssc=233546881.1.1583280684877&__hsfp=1331156460) - [CE & Events](https://www.ultradent.com/events?__hstc=233546881.6ce3c127e0d8e0b142ccbf3742853f08.1583280684877.1583280684877.1583280684877.1&__hssc=233546881.1.1583280684877&__hsfp=1331156460) - [Corporate Site](https://www.ultradent.com/company?__hstc=233546881.6ce3c127e0d8e0b142ccbf3742853f08.1583280684877.1583280684877.1583280684877.1&__hssc=233546881.1.1583280684877&__hsfp=1331156460) - [Blog](https://blog.ultradent.com/blog) - ![](https://blog.ultradent.com/hubfs/Template/Blog/images/Country%20Icons/USA.png) - 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Logo](https://blog.ultradent.com/hubfs/Template/Blog/images/ultradent_corner_logo.png)](https://www.ultradent.com/?__hstc=233546881.6ce3c127e0d8e0b142ccbf3742853f08.1583280684877.1583280684877.1583280684877.1&__hssc=233546881.1.1583280684877&__hsfp=1331156460) ![](https://blog.ultradent.com/hubfs/Halo-Clinical-Blog.jpg) # Clinical Guide: Rebuilding a Failed Posterior Restoration [Daniel Lewis](https://blog.ultradent.com/author/daniel-lewis) | October 09, 2026 [![Share on facebook](https://blog.ultradent.com/hubfs/Template/Blog/images/facebook-color.png)](http://www.facebook.com/share.php?u=https://blog.ultradent.com/clinical-guide-rebuilding-a-failed-posterior-restoration&utm_medium=social&utm_source=facebook) [![Share on linkedin](https://blog.ultradent.com/hubfs/Template/Blog/images/linkedin-color.png)](http://www.linkedin.com/shareArticle?mini=true&url=https://blog.ultradent.com/clinical-guide-rebuilding-a-failed-posterior-restoration&utm_medium=social&utm_source=linkedin) [![Share on twitter](https://blog.ultradent.com/hubfs/Template/Blog/images/twitter-color.png)](https://twitter.com/intent/tweet?original_referer=https://blog.ultradent.com/clinical-guide-rebuilding-a-failed-posterior-restoration&utm_medium=social&utm_source=twitter&url=https://blog.ultradent.com/clinical-guide-rebuilding-a-failed-posterior-restoration&utm_medium=social&utm_source=twitter&source=tweetbutton&text=) [![Share on email](https://blog.ultradent.com/hubfs/Template/Blog/images/email-color.png)](mailto:?subject=Check%20out%20https://blog.ultradent.com/clinical-guide-rebuilding-a-failed-posterior-restoration&utm_medium=social&utm_source=email%20&body=Check%20out%20https://blog.ultradent.com/clinical-guide-rebuilding-a-failed-posterior-restoration&utm_medium=social&utm_source=email) Much of the success of a posterior composite restoration resides with the margins. A perfectly adapted matrix, good quality isolation, and an effective and controlled light curing procedure can be the difference between a restoration that holds for years and one that prematurely fails. That is exactly the situation Dr. José Carlos Garófalo, a specialist in restorative and esthetic dentistry with a master of science in dentistry from the University of São Paulo (FOUSP), walks through in this case. A previous restoration had failed and dislodged from the patient’s mouth. Dr. Garófalo’s replacement protocol combined the Halo™ sectional matrix system, Ultra-Etch™ 35% phosphoric acid etch, Peak™ SE Primer, the VALO™ Grand curing light, and Transcend™ universal composite to rebuild a durable and highly esthetic posterior restoration.   ![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-42-40-1566-PM.jpeg?width=312&height=238&name=undefined-Oct-09-2026-07-42-40-1566-PM.jpeg)![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-42-40-3689-PM.jpeg?width=312&height=238&name=undefined-Oct-09-2026-07-42-40-3689-PM.jpeg) The Halo sectional matrix system and Transcend universal composite restore a failed posterior. Before (left)/after (right). Photos courtesy of Dr. José Carlos Garófalo. ## **Posterior Restoration Replacement Technique, Step by Step** **1. Assess the failed restoration.** ![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-44-11-8796-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-44-11-8796-PM.jpeg) The case begins with a previous restoration that has failed and dislodged from the patient’s mouth. The remaining tooth structure, condition of the surrounding gingiva, and the proximal contacts are all evaluated to plan the rebuild.   **2. Isolate, prepare, and place Halo sectional matrix band and wedge.** ![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-44-25-5792-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-44-25-5792-PM.jpeg)![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-44-25-8401-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-44-25-8401-PM.jpeg) The tooth is isolated with a rubber dam to control moisture and protect the operative field. After preparation, a Halo™ sectional matrix band is seated against the prepared tooth, and a Halo™ disposable anatomical large wedge is placed to seal the gingival margin and begin separating the adjacent teeth.   **3. Seat the Halo™ Universal matrix ring.** *![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-44-42-8655-PM.png?width=358&height=258&name=undefined-Oct-09-2026-07-44-42-8655-PM.png)![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-44-43-0796-PM.png?width=418&height=258&name=undefined-Oct-09-2026-07-44-43-0796-PM.png)* The Halo Universal matrix ring is placed over the band and wedge to apply consistent separation force and adapt the matrix tightly against the tooth.   **4. Selectively etch enamel with Ultra-Etch etchant and prime dentin with Peak SE Primer.** *![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-44-55-9202-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-44-55-9202-PM.jpeg)* Using a selective etch technique, Ultra-Etch 35% phosphoric acid etchant is applied to the cut enamel for 15 seconds. After rinsing and drying, Peak SE Primer is applied to the dentin for 20 seconds.   **5. Apply universal adhesive.** *![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-45-04-7276-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-45-04-7276-PM.jpeg)* A universal adhesive is applied across the prepared surfaces. A thin, evenly distributed layer is applied.   **6. Cure the adhesive with the VALO Grand curing light.** *![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-45-15-3221-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-45-15-3221-PM.jpeg)* The adhesive is cured for 10 seconds with the VALO Grand curing light. The 12 mm lens covers the full preparation in a single cure.   **7. Place Transcend universal composite in 2 mm layers.** *![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-45-24-7747-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-45-24-7747-PM.jpeg)* The preparation is restored in 2 mm increments using Transcend universal composite in the Universal Body shade. Transcend universal composite has excellent working consistency that makes it easy to sculpt, does not stick to instruments, stays where you want, and polishes beautifully,*1* while the Universal Body shade blends with almost any tooth color anywhere in the mouth, no blocker needed.*2*   **8. Finish and polish under isolation with Jiffy™ composite polishing points and Jiffy™ Natural composite polishers.** *![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-45-35-3565-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-45-35-3565-PM.jpeg)* With the rubber dam still in place, finishing and polishing are completed using Jiffy composite points and Jiffy Natural composite polishers.   **9. Evaluate the final result.** *![](https://blog.ultradent.com/hs-fs/hubfs/undefined-Oct-09-2026-07-45-45-9954-PM.jpeg?width=338&height=258&name=undefined-Oct-09-2026-07-45-45-9954-PM.jpeg)* After polishing, the restoration is assessed for marginal integration, anatomical form, and surface polish.   A failed posterior restoration is an opportunity to properly do the rebuild with tight matrix adaptation, controlled isolation, a selective-etch bond, and a composite that adapts to the substrate. Together, the Halo sectional matrix system, Ultra-Etch etchant, Peak SE Primer, the VALO Grand curing light, and Transcend universal composite give clinicians a predictable protocol for the procedure.   1. Data on file. 2. Data on file. ![Daniel Lewis](https://blog.ultradent.com/hubfs/Blog%20Images/Author%20Images/Daniel-Lewis-headshot.jpg) ### [Daniel Lewis](https://blog.ultradent.com/author/daniel-lewis) Daniel is a longtime news producer turned dental industry storyteller who’s interviewed people on every continent plus the international space station. He can usually be found eating carbohydrates in the company of his dog. ![](https://blog.ultradent.com/hubfs/Template/Blog/images/Icon_Mail.png) ### Ultradent Blog Sign Up to Receive Blog Updates ## Comments ### Recent Posts ![](https://blog.ultradent.com/hubfs/Template/Blog/images/Icon_Mail.png) ### Ultradent Blog Sign Up to Receive Blog Updates ### Categories - [40 Year Anniversary (8)](https://blog.ultradent.com/tag/40-year-anniversary) - [5 Questions with Dr. Fischer (8)](https://blog.ultradent.com/tag/5-questions-with-dr-fischer) - [Ask Dr. Fischer (5)](https://blog.ultradent.com/tag/ask-dr-fischer) - [Dental Industry Issues (44)](https://blog.ultradent.com/tag/dental-industry-issues) - [Employee Spotlight (9)](https://blog.ultradent.com/tag/employee-spotlight) - [featured (10)](https://blog.ultradent.com/tag/featured) - [Fischer Philosophy (23)](https://blog.ultradent.com/tag/fischer-philosophy) - [From the Desk of Dirk Jeffs (8)](https://blog.ultradent.com/tag/from-the-desk-of-dirk-jeffs) - 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