1,721,096 research outputs found
Artificial landmarks and areas’ accuracy gradient: a three-dimensional analysis of trueness and precision of IOS scans on the total edentulous maxilla.
No full textDentin exposure after tooth preparation for porcelain laminate veneers: a microscopical analysis.
No full textDigital vs conventional impressions on the totally edentulous maxilla: in vitro analysis of the accuracy.
No full textThree-dimensional analysis and accuracy of an intraoral scanner on vertical and horizontal subgingival margins.
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Zirconia abutments and restorations: From laboratory to clinical investigations
No full textIn last years the use of zirconia in dentistry has become very popular. Unfortunately, the clinical indications for a dental use of zirconia are not completely clear yet, neither are their limitations.
The objective of this review was to evaluate the basic science knowledge on zirconia and to discuss some aspects of the clinical behavior of zirconia-based restorations. In particular, one of the goals was highlighting the possible correlation between in vitro and in vivo studies. The definition of concepts like success, survival and failure was still debated and the correlation between in vitro results and predictability of clinical behavior was investigated. Published by Elsevier Ltd on behalf of Academy of Dental Materials
Evaluation of the accuracy of intraoral scanner on a totally edentulous maxilla: a comparison of two different techniques of scanning and accuracy in case of different anatomical landmarks definition. A 3D analysis.
No full textComparison of the accuracy of an intraoral and an extraoral laboratory scanner on the totally edentulous maxilla: a 3D analysis.
No full textDentin Exposure after Tooth Preparation for Laminate Veneers: A Microscopical Analysis to Evaluate the Influence of Operators’ Expertise
Full text linkBackground: To assess the quantity of dentin exposure detected by 3 operators with different clinical expertise for 2 designs of tooth preparation for laminate veneers: window (WI) and butt joint (BJ). Methods: 20 intact maxillary central incisors were collected and then prepared for laminate veneers to a depth of 0.6 mm, with a cervical mini-chamfer finish line of 0.3 mm. Each prepared tooth was analyzed by 3 operators with different expertise: undergraduate student (ST), general practitioner (GP), and prosthodontist (PR), at sight under magnification. Besides descriptive statistics (CI 95%), 2-way ANOVA and Games–Howell tests were used to analyze differences among groups (α = 0.05). Results: The means of percentage and area of detected dentin exposure were WI = 30.48%, 21.57 mm2; BJ = 30.99%, 21.97 mm2; ST/WI = 22.82%, 16.44 mm2; GP/WI = 58.05%, 40.64 mm2; PR/WI = 10.55%, 7.63 mm2; ST/BJ = 28.99%, 20.83 mm2; GP/BJ = 40.56%, 28.32 mm2; PR/BJ = 23.42%, 16.75 mm2. Significant differences were found between ST/WI vs. GP/WI (p = 0.005) and GP/WI vs. PR/WI (p < 0.001). Conclusions: There was no difference in detection of exposed dentin among operators with different expertise for BJ preparation, whereas differences were found between the general practitioner and the other 2 operators in WI. Moreover, the quantity of exposed dentin was not related to different tooth preparation designs
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