The Effect of Gastric Acid on the Surface Properties of Different Universal Composites: A SEM Study

Dağdelen Ahısha C., Gündoğdu C., Kedici Alp C.

SCANNING, cilt.2022, ss.9217802-9217812, 2022 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 2022
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1155/2022/9217802
  • Dergi Adı: SCANNING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chimica, Communication Abstracts, Compendex, EMBASE, INSPEC, MEDLINE, Metadex, Directory of Open Access Journals, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.9217802-9217812
  • Gazi Üniversitesi Adresli: Evet

Özet

The aim of this study is to compare surface roughness and microhardness changes of three monochromatic (Omnichroma, Vittra

Unique, and Charisma Diamond One) and three universal shade (Neo Spectra ST, G-ænial A’CHORD, and Nova Compo C) resin

composites after exposure to simulated gastric acid. A total of 144 disc-shaped specimens (24 discs of each composite resin) were

prepared using plexiglass molds (R = 5 mm × h = 2 mm) for evaluation from each material. Specimens of each material were

divided into two main groups for the evaluation of the microhardness and surface roughness and also two subgroups for 7-

and 14-day exposures to simulated gastric acid. Initial microhardness and surface roughness measurements of all samples were

measured before immersion (T1) followed by exposing the samples to simulated gastric acid for 7 days (T2) and 14 days (T3),

and then, the microhardness and roughness measurements were repeated. Randomly selected specimens of each material for

each of the time intervals (T1, T2, and T3) were evaluated with scanning electron microscopy (SEM). One-way ANOVA

revealed that the surface roughness and hardness values of all tested composite resin restorative materials show no statistically

significant difference for the initial (T1) value (p > 0:05). Regarding the 7th day (T2) and 14th day (T3) surface roughness and

microhardness value of all composites, there are statistically significant differences between the groups (p < 0:05), while there

was no statistically significant difference between the surface hardness reduction percentage between the time intervals

(p > 0:05). As a result of this in vitro study, increase in surface roughness and decrease in microhardness of the tested universal

composite materials when exposed to simulated gastric acid were statistically significant.