Dental composite polymerization: a three different sources comparison

Michele Sozzi; Carlo Fornaini M.D.; Giuseppe Lagori; Elisabetta Merigo; Annamaria Cucinotta; Paolo Vescovi; Stefano Selleri

doi:10.1117/12.2079227

24 February 2015 Dental composite polymerization: a three different sources comparison

Michele Sozzi, Carlo Fornaini M.D., Giuseppe Lagori, Elisabetta Merigo, Annamaria Cucinotta, Paolo Vescovi, Stefano Selleri

Author Affiliations +

Proceedings Volume 9306, Lasers in Dentistry XXI; 930608 (2015) https://doi.org/10.1117/12.2079227
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

The introduction of photo-activators, with absorption spectra in the violet region, in composite resins raised interest in the use of 405 nm diode lasers for polymerization. The purpose of this research is the evaluation of the resins polymerization by means of violet diode laser compared to traditional lamps. Two different resins have been used for the experiments: Filtek Supreme XT flow (3M ESPE, USA) and Tetric Evo flow (Ivoclar, Vivadent). The photo-activator used is Camphoroquinone, alone, or in combination with Lucirin TPO. The resins have been cured with an halogen lamp (Heliolux DXL, Vivadent Ivoclar, Austria), a broadband LED curing light (Valo Ultradent, USA) and a 405 nm laser (Euphoton, Italy). The measure of cure depth, of the volumetric shrinkage, and the conversion degree (DC%) of the double bond during the curing process have been evaluated. A composite layer of 3 mm was cured in Filtek Supreme resin (Camphoroquinone activator), lower if compared to the use of the other two light sources. Tests on Tetric Evo (Camphoroquinone + Lucirin) didn’t show any improvement of the use of laser compared to the halogen lamp and the broadband LED. By measuring the volumetric shrinkage the laser induced the lower change with both the composites. In terms of DC% the lower performance was obtained with the laser. Considering that the polymerization process strongly depends on the kind of composite used the effectiveness of 405 nm laser proved to be lower than halogen lamps and broadband LEDs.

Citation Download Citation

Michele Sozzi, Carlo Fornaini M.D., Giuseppe Lagori, Elisabetta Merigo, Annamaria Cucinotta, Paolo Vescovi, and Stefano Selleri "Dental composite polymerization: a three different sources comparison", Proc. SPIE 9306, Lasers in Dentistry XXI, 930608 (24 February 2015); https://doi.org/10.1117/12.2079227

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Composites

Polymerization

Lamps

Light emitting diodes

Halogens

Light sources

Semiconductor lasers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years