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Bonding Mechanism

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CONSERVATIVE OPERATIVE DENTISTRY Page 1 Lecture: Bonding Systems (Enamel, Dentin, Compomer, Amalgam, Resin Cement) OVERVIEW OF BONDING SYSTEMS: A. Goals of Bonding (and Adhesion): 1. Sealing 2. Retention B. Definitions and Terminology for Adhesion: 1. Terminology for adhesion: a. Adhesive- material forming the layer b. Adherend- substrate being bonded c. System (EBS, DBS) and agents (EBA, DBA, ABA) 2. Adhesive systems: a. Adhesive layer (Adherend/ Adhesive) b. Adhesive joint (Adherend-1/ Adhesive/ Adherend-2) Bonding system applications: Adherend-1: Sealant Enamel Surface Sealers Composite Enamel bonding system Enamel Dentin bonding system Dentin Amalgam bonding system Enamel/Dentin Composite cement Enamel/Dentin Crown and Bridge Cement Enamel/Dentin Orthodontic bonding system Enamel Maryland bridge cement Enamel Porcelain veneers Enamel PFM repairs Metal/Porcelain

Adherend Adhesive DENTAL ADHESION

DENTAL
Adherend Adherend ADHESIVE JOINT

Interface #1 Interface #2

Adhesive: Adherend-2:
Sealant
Sealer
EBA Composite
Primer-DBA Composite
ABA Amalgam
BA/Comp/BA Inlays
BA/Comp/BA Metal/Ceramic
Composite Bracket
Composite Metal Alloy
Composite Porcelain
Composite

C. Steps in Formation of Good Adhesion (for Retention): (1) Clean adherend
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