One-year clinical results of restorations using a novel self-adhesive resin-based bulk-fill restorative

Andreas Rathke,Rainer Seemann,Michael K. McGuire,Rick H. Heard,Frank Pfefferkorn

doi:10.1038/s41598-022-07965-z

Andreas Rathke, Rainer Seemann + Show 3 more

Open Access

https://doi.org/10.1038/s41598-022-07965-z

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Abstract

This prospective study assessed the dual-curing self-adhesive bulk-fill restorative Surefil one. The restorations were placed and reviewed by dental practitioners who are members of a practice-based research network in the United States. Seven practitioners filled 60 cavities (20 class I, 19 class II and 21 class V) in 41 patients with Surefil one without adhesive, according to the manufacturer’s instructions. The restorations were evaluated using modified USPHS criteria at baseline, 3 months, and 1 year. Patients were also contacted to report postoperative hypersensitivity one to four weeks after placement. The only patient that showed moderate hypersensitivity after 1 year had previously reported symptoms that were unlikely associated to the class I molar restoration. One class II restoration in a fractured maxillary molar was partially lost. The remaining restorations were found to be in clinically acceptable condition resulting in an annual failure rate of 2%. Color match showed the lowest number of acceptable scores (88%) revealing significant changes over time (P = 0.0002). No significant differences were found for the other criteria (P > 0.05). The novel self-adhesive bulk-fill restorative showed clinically acceptable results in stress-bearing class I and II as well as non-retentive class V cavities at 1-year recall.

Highlights

This prospective study assessed the dual-curing self-adhesive bulk-fill restorative Surefil one
Dropouts occurred for one patient with one class V restoration after 3 months and for seven patients with 11 restorations after 1 year, which results in recall rates of 98% and 82%, respectively
The only patient that showed moderate hypersensitivity after 1 year (2%) had reported symptoms at the 3-month recall that were unlikely associated to the class I molar restoration

Summary

Introduction

This prospective study assessed the dual-curing self-adhesive bulk-fill restorative Surefil one. The novel self-adhesive bulk-fill restorative showed clinically acceptable results in stress-bearing class I and II as well as non-retentive class V cavities at 1-year recall. Clinical data of up to 10 years confirmed the safe applicability of these bulk-fill composites as alternative to conventional posterior composite restorations[6–8]. The most common approach was modifying the reactive diluents with acidic moieties to facilitate the bonding with enamel and dentin This approach was commercialized as self-adhesive flowable composites, but many laboratory studies have questioned whether these materials are a valid alternative to composites where a separate adhesive is applied[9–11]. The structural monomers can be modified with acidic groups to achieve sufficient adhesion To its extreme this approach is realized in the polyacids used in glass ionomer cements[17]. This leads to bulk curing (in the dark) as well as light curing of the surface areas[18]

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