Influence of Immediate Dentin Sealing Techniques on Cuspal Deflection and Fracture Resistance of Teeth Restored with Composite Resin Inlays

L Oliveira, EG Mota, GA Borges, LH Burnett, AM Spohr
2014 Operative dentistry  
Immediate dentin sealing with Clearfil SE Bond can contribute to less cuspal deflection of teeth restored with composite resin inlays luted with Panavia F. SUMMARY This research evaluated the influence of immediate dentin sealing (IDS) techniques on cuspal deflection and fracture resistance of teeth restored with composite resin inlays. Forty-eight maxillary premolars were divided into four groups: G1, sound teeth (control); G2, without IDS; G3, IDS with Clearfil SE Bond (CSE); and G4, IDS with
more » ... ); and G4, IDS with CSE and Protect Liner F. The teeth from groups 2, 3, and 4 received mesio-distal-occlusal preparations. The impressions were made with vinyl polysiloxane, followed by provisional restoration and storage in water for seven days. The impressions were poured using type IV die stone, and inlays with Filtek Z250 composite resin were built over each cast. The inlays were luted with Panavia F. After storage in water for 72 hours, a 200-N load was applied on the occlusal surface using a metal sphere connected to a universal testing machine, and the cuspal deflection was measured with a micrometer. The specimens were then submitted to an axial load until failure. The following mean cuspal deflection (lm) and mean fracture resistance (N) followed by the same lowercase letter represent no statistical difference by analysis
doi:10.2341/12-100-l pmid:23718211 fatcat:ez6pnkhfifco7czz76l4tk2wim