首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
2.
A dentist describes her journey from private practice to legislative assistant. Beginning with work in the ADA's Government Relations Office and then through the American Dental Association's Congressional Fellowship, Dr. Skoulas has now taken a full-time position monitoring and developing legislation for Congressman Edward J. Markey.  相似文献   

3.
BACKGROUND: Thriving dental practices are excellent at providing a warm personal experience or are efficient, fast and cost-effective. Those that that attempt to do both end up being mediocre at just about everything. CONCLUSIONS: Introducing ideas from dramaturgy and service simultaneity in the services marketing literature, the authors provide a model for the conceptualization and redesign of the dental practice. PRACTICE IMPLICATIONS: Successful dental practices will be those that concentrate on low customization of activities in the back office or high customization of activities in the front office.  相似文献   

4.
5.

Objectives

The aim of this study is to evaluate the packing properties of uniform silica particles and their mixture with secondary particles yielding maximally loaded dental composites. We intend to verify the difference between the idealized models (the close-packed structures and the random-packed structures) and the actual experimental results, in order to provide guidance for the preparation of dental composites. The influence of secondary particle size and the resin composition on the physical–mechanical properties and the rheological properties of the experimental dental composites was also investigated.

Methods

Silica particles (S-920, S-360, and S-195) with average diameters of 920, 360, and 195 nm were synthesized via the Stöber process. Their morphology and size distribution were determined by field-emission scanning electron microscopy and laser particle sizer. A series of silica fillers, S-920, S-920+195, S-920+360, and S-920+360+195, were then formulated with two Bis-GMA/TEGDMA resins (weight ratios of 70:30 and 50:50). For these experimental dental composites, their maximum filler loadings were assessed and compared to the theory. The mechanical properties, degree of conversion, depth of cure, and polymerization shrinkage of these composites were then evaluated. Their rheological behaviors were measured with a rheometer.

Results

Unimodal S-920 had the maximally filler loading of 70.80 wt% with the 5B5T resin, close to the theoretical estimation of the random loose packing (71.92 wt%). The maximum loading of the S-920+360+195 filled composite was 72.92 wt% for the same resin, compared to the theoretical estimation of 89.29 wt% obtained for the close-packed structures. These findings indicate that random loose packing matches more closely to the real packing state for the filler formulations used. When maximally loaded, the composite with S-920+360+195 produced the best mechanical properties and the lowest polymerization shrinkage. The degree of conversion and depth of cure were higher with secondary particles added, and the viscosity of all unpolymerized pastes exhibited shear thinning behavior.

Significance

Theoretical estimations of filler packing structures provide a useful guidance in the design of multimodal filler formulations and the preparation of dental composites with higher filler loading, improved physical–mechanical properties.  相似文献   

6.
7.
It has been claimed that in order to decrease the gap between what we know and what we do, research findings must be translated from knowledge to action. Such practices better enable dentists to make evidence-based decisions instead of personal ideas and judgments. To this end, this literature review aims to revisit the concepts of knowledge translation and evidence-based dentistry (EBD) and depict their role and influence within dental education. It addresses some possible strategies to facilitate knowledge translation (KT), encourage dental students to use EBD principles, and to encourage dental educators to create an environment in which students become self-directed learners. It concludes with a call to develop up-to-date and efficient online platforms that could grant dentists better access to EBD sources in order to more efficiently translate research evidence into the clinic.  相似文献   

8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号