Naslov
Degree of Conversion

Autori
Tarle, Zrinka ; Par, Matej

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, pregledni

Knjiga
Dental Composite Materials for Direct Restorations

Urednik/ci
Miletic, Vesna

Izdavač
Springer

Godina
2018

Raspon stranica
63-85

ISBN
978-3-319-60960-7

Ključne riječi
Dental Composites ; Degree of Conversion ; Methacrylate Resins

Sažetak
The degree of conversion (DC) can be defined as the extent to which monomers react to form polymers or as the ratio of C=C double bonds that are converted into C-C single bonds. In the polymerization of bifunctional methacrylates, the complete conversion is never attainable because diffusional restrictions in later stages of the polymerization reaction prevent a certain amount of monomer molecules from reaching reaction sites. Thus the DC in dental composites usually varies between 50 and 80 %. The DC is a fundamental attribute of a cured composite since it affects virtually all other material properties which are important for the clinical success of the restoration. Although the composition of contemporary composites is fine-tuned to attain optimal DC and the related properties if properly handled and light-cured, poor DC due to unfavorable curing conditions or operators’ insufficient understanding of the curing procedure may affect critical material properties and increase the risk of clinical failure. This chapter reviews various factors determining the DC, properties of composite materials which are dependent on the DC, as well as methods used to evaluate the DC.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA