AIC 19th International Congress and CONSEURO "Clinical Procedures and Digital (r)Evolution: contemporary synergies in conservative/restorative dentistry"

This is the authors' abstract. We don't add key points for this paper.

Giomer is a relatively new class of restorative material with aesthetics, handling and physical properties of resin composite and benefits of glass ionomer: high radiopacity, anti-plaque effect, fluoride release and recharge. Different chemical-physical tests (mechanical tests: indentation strength test; characterization of surface tests: UV-vis spectrophotometry, MicroRaman spectroscopy analysis; ageing test in saliva-comparison; ageing test in sugary drink-comparison; weight variation test in saliva) were performed in an in-vitro comparative study of a giomer (Beautifil II by Shofu Dental Corporation Osaka, Japan), a compomer (Dyract Extra by Dentsply, Caulk, Germany), a glass ionomer cement (Ketac Fil Plus by 3M ESPE) and a resin composite (TetricEvoceram by Ivoclar Vivadent AG, Schaan, Liechtenstein). Materials investigated showed very similar behavior even if giomer demonstrated an hardness two times higher than compomer and resin composite despite the release and recharge capability of the material. The chemical nature of all materials appears to be analogue and comparable. Aging in saliva showed an almost absent of organic contamination on Giomer surface, it was the smallest among the materials tested. Aging in sugary drink do not damage Giomer instead, in Composite Resin some chemical permanent alteration occurred. No changes in weight decease or material loss were observed in samples. The results obtained confirm the high quality of Giomer material and indicate possible improvements in their usage.