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Volume 6, Issue 9 (Suppl) Dentistry 2016
ISSN: 2161-1122 Dentistry, an open access journal Euro Dental Congress 2016
October 24-26, 2016
October 24-26, 2016 Rome, Italy
15th Euro Congress on
Dental & Oral Health
Marwa Abdelaziz et al., Dentistry 2016, 6:9 (Suppl)
Title: Comparison of one component universal adhesive’s infiltration depth into natural enamel lesions
after air drying vs 96% ethanol
Marwa Abdelaziz1, A. Lordi Rizzini 1, A. Feilzer2, I. Krejci 1
University of Geneva, Switzerland
Aim: Comparing the effect of two different drying procedures on the infiltration depth of a self etch bonding agent into natural caries
lesions.
Materials and methods: 8 extracted human teeth with non-cavitated interproximal lesions. Samples were cut vertically to obtain
two symmetrical lesions, (n=16). After isolating the cut surfaces by nail varnish, a metallic strips was used to remove the outer
hypermineralized layer of the lesion. After etching for 2min with 37% orthophosphoric acid and thoroughly rinsing the surface,
lesions of Gr.1 were air-dried for 30s. In Gr.2 lesion surfaces were air-dried for 10s, followed by application of 96% ethanol for 30s and
air-dried for another 10s. Scotchbond Universal (3M ESPE,USA) was subsequently applied and left for infiltration for 3 min. Excess
was removed before light curing for 40s, then a thin layer of flowable composite (Tetric flow, Vivadent) was applied and light cured
for 20s. Samples were bleached using 30% H2O2 for 12h @ 37°C and then re-stained with sodium fluorescein solution. Thin cuts of
the teeth were observed with confocal microscopy (CLSM, Leica SP5-2P) and computer image analysis was performed (ImageJ, NIH,
USA). The percentage of infiltration was than calculated as area of resin infiltration (red)/area of total demineralization (green) x100.
Results: Average penetration for (Gr.1) was 30.2%(SD13.4) while (Gr.2) was 27.45%(SD 13.3), Statistical analysis (t-test) showed no
significant difference between the two groups (p=0,653).
Conclusion: Penetration depth of a one component universal adhesive system was not significantly different after pretreatment of
initial caries lesions with compressed air and with 96% ethanol, respectively.
Biography
Marwa Abdelaziz Is graduated from the University of Geneva in 2010 and she has been working simultaneously in a private practice as a general dentist and at
the University of Geneva (Division of cariology, endodontlogy and pediatric dentistry) teaching students and conducting research. In 2013 at the age of 29 years
she started a PhD Project supervised by the University of Amsterdam (ACTA) and the University of Geneva, the subject of the research is focused on non-invasive
diagnostic methods and non-invasive treatment options of initial carious lesions like infiltration and sealing.