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Proceedings Paper

Marginal fit of CAD CAM all ceramic inlays: preliminary study
Author(s): Luciana Goguta; Florin Topala; Andrei Gavrilovici; Anca Jivanescu
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Paper Abstract

Aim of the study. Marginal fit of the all ceramic chair side CAD CAM inlays evaluation.

Materials and methods. Inlay class II standardized preparations were performed on twelve natural teeth (molars) which were adapted and fixed on a typodont. Scanning of the cavities was done (Planmeca FIT) and the milling of the inlays was realized (Planmeca Mill 40). Light body silicone (Fit Checker II, GC, Tokyo, Japan) was injected on the preparations of the typodont model, and then each of the Empress CAD inlays were seated on the abutments under finger pressure, reproducing the clinical situation of the luting process. The marginal gap between the all ceramic inlays and the cavities was measured using microscopic photos of the silicone fit checker between the inlays and the cavities in 12 points/restoration. A calibration scale and imaging computer software (Image J) were used for the measurements.

Results The values measured for the occlusal cavity (marginal occlusal) were ranged between 19.026µ and 139.669µ and the values for the vertical cavity (marginal cervical) ranged between 69.256 µ and 295.091. Marginal openings below 100μ-120μ are clinically acceptable so there where some problems regarding the cervical fit.

Conclusion
Within the limits of this study there were some cases with poor cervical marginal fit. Extensive studies could be useful for more accurate evaluations.

Paper Details

Date Published: 10 August 2018
PDF: 5 pages
Proc. SPIE 10831, Seventh International Conference on Lasers in Medicine, 1083105 (10 August 2018); doi: 10.1117/12.2280200
Show Author Affiliations
Luciana Goguta, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Florin Topala, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Andrei Gavrilovici, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Anca Jivanescu , Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)


Published in SPIE Proceedings Vol. 10831:
Seventh International Conference on Lasers in Medicine
Carmen Todea M.D.; Adrian Podoleanu; Virgil-Florin Duma, Editor(s)

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