Tag Archives: Bis-GMA

Dental Composite chemistry

dental composite or white filling

Dental composite chemistry C factor – ratio of bonded to unbonded surfaces in the preparation Consists of Organic resin matrices Inorganic fillers consisting of proprietary combinations of zinc, alumina, silica, quartz, and zirconia.  This is where most of the evolution of composites has occurred. Pre-polymerized resins as a coupling agent Silane – tris(2-methoxyethoxy) vinyl silane  […]

Porcelain repair

Image of failed PFM repair

Need steps for a porcelain repair with composite? Porcelain repair with composite is possible but is more technique sensitive than most dentistry. Porcelain repair step by step Bevel and roughen with rough diamond (or sandblast) Apply 9% HF 1 minute – 90 seconds Regular phosphoric acid etch 20 seconds agitated to clean and remove salts […]