title: Flowable composites for restoration of non-carious cervical lesions: Three-year results.
abstract: To evaluate the clinical performance of two flowable composites for restoring Class-V non-carious cervical lesions (NCCLs), one with novel (ND; N'Durance®Dimer Flow, Septodont) and one with modified conventional matrix composition (FS; Filtek™ Supreme XTE Flow, 3M-ESPE). The null hypothesis was that both flowable composites perform equally regarding clinical quality and survival.
  
  
  
  50 patients received one ND and one FS restoration of NCCLs in premolars using Clearfil Protect Bond (Kuraray) as an adhesive. Restorations were evaluated by two examiners at baseline (BL), 18 and 36 months employing FDI criteria. Non-parametric statistical analyses and χ2tests were applied (α=0.05).
  
  
  
  48 patients with both restorations under risk participated in the 36-mo recall. One patient terminated participation after the 18-mo recall. One ND restoration failed at the 18-mo recall (fracture). One FS restoration failed during clinical examination at the 36-mo recall (debonding). 95.8% of restorations each were rated clinically acceptable at 36-mo. No significant differences for all selected FDI criteria were recorded between ND and FS at each examination time point except for the criteria surface staining at 36-mo and marginal staining at 18-mo and 36-mo, where FS showed significantly better results. For each material, no significant differences over time were detected, except for loss of surface lustre for FS (BL to 18 months).
  
  
  
  Within the limitations of the study, the null hypothesis that materials perform equally could not be rejected. Both flowable composites performed equally regarding survival and similarly regarding clinical performance.
authors.affiliation: Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany; Private Practice, Amberg, Germany.
authors.forename: Sabine
authors.initials: S
authors.lastname: May
authors.affiliation: Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany. Electronic address: fabian.cieplik@ukr.de.
authors.forename: Fabian
authors.initials: F
authors.lastname: Cieplik
authors.affiliation: Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany.
authors.forename: Karl-Anton
authors.initials: KA
authors.lastname: Hiller
authors.affiliation: Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Buchalla
authors.affiliation: Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany.
authors.forename: Marianne
authors.initials: M
authors.lastname: Federlin
authors.affiliation: Department of Conservative Dentistry and Periodontology, University Medical Center Regensburg, Regensburg, Germany; Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland.
authors.forename: Gottfried
authors.initials: G
authors.lastname: Schmalz
mesh_terms: D003188:Composite Resins; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent; D006801:Humans; D019237:Tooth Cervix
chemical_list: D003188:Composite Resins; C111840:flowable hybrid composite
keywords: Class-V; Filtek Supreme XTE; Flowable composites; NCCLs; Non-carious cervical lesion; N’Durance