Can pulpal floor debonding be detected from occlusal surface displacement in composite restorations?

• Published in: Dental materials Vol. 34; no. 1; pp. 161 - 169
• Main Authors: Novaes, João Batista, Talma, Elissa, Las Casas, Estevam Barbosa, Aregawi, Wondwosen, Kolstad, Lauren Wickham, Mantell, Sue, Wang, Yan, Fok, Alex
• Format: Journal Article
• Language: English
• Published: England Elsevier Inc 01.01.2018; Elsevier BV
• Subjects: Acrylic Resins - chemistry; Aluminum; Composite materials; Composite Resins - chemistry; Computer simulation; Contraction; Correlation analysis; Debonding; Deformation; Deformation mechanisms; Dental caries; Dental Cavity Preparation; Dental Cements; Dental Marginal Adaptation; Dental materials; Dental restoration; Dental Restoration Failure; Dental Restoration, Permanent - methods; Dental restorative materials; Digital imaging; Displacement measurement; Elastic Modulus; Finite Element Analysis; Finite element method; Image Processing, Computer-Assisted; Intraoral scanner; Light-Curing of Dental Adhesives; Materials Testing; Polymerization; Polymerization shrinkage; Polyurethanes - chemistry; Powder; Resin composite; Restoration; Scanners; Shrinkage; Slumping; Statistical analysis; Surface Properties; Teeth; Resin composite; Intraoral scanner; Dental restoration; Debonding; Polymerization shrinkage

Polymerization shrinkage of resin composite restorations can cause debonding at the tooth–restoration interface. Theory based on the mechanics of materials predicts that debonding at the pulpal floor would half the shrinkage displacement at the occlusal surface. The aim of this study is to test this...