euro-dentistry-2017-keynote

2 / 12

Dentistry: Case Report Euro Dentistry 2017
September 20-21, 2017
Page 16
25th Euro Dentistry Congress
September 20-21, 2017 Dublin, Ireland
Yasemin Kulak Ozkan, Dentistry: Case Report
In vivo evaluation of the internal and marginal adaptation and clinical success of different full ceramic
crowns generated with CAD/CAM technology
Aim: The aim of this clinical study were to compare the marginal and internal adaptation of all-ceramic crowns generated with
CAD/CAM before cementation and examine the clinical outcomes at baseline and sixth month after luting.
Materials &Methods: A total of 45 crowns were placed in 38 patients, including 15 lithium disilicate ceramic crowns (LDS, IPS
e.max CAD Blocks, Ivoclar, Vivadent, Schaan, Liechtenstein), 30 lithium disilicate stengthened lithium aluminosilicate glass-
ceramic crowns. The marginal and internal gaps of crowns were recorded by using a replica technique. The replica specimens
were sectioned bucco-lingually and mesio-distally and the thickness of silicone layers was examined by computerized light
microscope at × 40 magnification. Twenty reference points per tooth were measured, andmeanmarginal and internal gaps were
recorded. Restorations were clinically assessed at baseline and six months after cementation by using modified USPHS criteria,
plaque and gingival indexes and patients satisfaction criteria. Data was analysed by using Mann-Whitney andWilcoxon Signed
Rank tests (P<0.05).
Results: After six month observation period, total survival rates of LDS and LAS groups were 100%. There were no clinically
identified cases of crown fracture or surface chipping. The mean marginal gaps were 53.2963 (± 11.2691) μm for LDS group
and 51. 6703 (±11.2381) μm for LAS group. The highest gap value was observed at the occlusal area and lowest one at the
marginal area (P<0.05). There was no significant difference in relation to material difference.
Conclusions: Regarding all of the clinical evaluation criteria all 45 crowns exhibited clinically acceptable scores within an
average evaluation time of six months. Early results indicate that LAS crowns may be an effective option for all-ceramic
restorations.
Biography
Yasemin Kulak Ozkan has completed her Graduation at Marmara University, in 1987. She became a Research Assistant in the Faculty of Dentistry, Department of Prost-
hodontics in the same year. She became an Associate Profesor in 1996; Professor in 2001 and; Vice Dean in 2004-2007. She was elected as a President of TPID (Turkish
Prostodontics and Implantology Association) in 2016. Since 2014, she has been serving as the Dean of University of Marmara, Faculty of Dentistry and the Head of the
Department of Prosthesis. She has published more than 60 papers in reputed journals and has been serving as an Editorial Board Member of reputed journals.
Yasemin Kulak Ozkan
University of Marmara, Turkey