Biogeochemical and climate drivers of wetland phosphorus and nitrogen release: Implications for nutrient legacies and eutrophication risk.

The dynamics and processes of nutrient cycling and release were examined for a lowland wetland-pond system, draining woodland in southern England. Hydrochemical and meteorological data were analyzed from 1997 to 2017, along with high-resolution in situ sensor measurements from 2016 to 2017. The results showed that even a relatively pristine wetland can become a source of highly bioavailable phosphorus (P), nitrogen (N), and silicon (Si) during low-flow periods of high ecological sensitivity.

Early years postgraduate learning and training in prosthodontic dentistry: 2019 and beyond.

The intended outcome of dental education is to produce dental clinicians who have the knowledge, technical skills, personal attributes, values and professional outlook to deliver the highest level of patient care. Due to the development and improvement of dental materials and clinical techniques, combined with a steady rise in patient expectations and complaints, prosthodontics has developed into a dental speciality recognised by the General Dental Council. Going forward, there will be a requirement to provide complex and difficult operative and prosthodontic dentistry.

Direct core materials.

There are many materials that can be used for direct-placement cores. Although the scientific evidence is incomplete, some materials are better suited to this task than others. This article provides an overview of direct-placement core materials and highlights what clinicians should consider when assessing a new product.

Direct cores for vital teeth--materials and methods used to retain cores in vital teeth.

A core, or foundation restoration, is used to restore extensively damaged teeth to a form suitable for crown preparation. This literature review considers the range of materials which can be used for cores and the evidence for their suitability. The methods for their retention in vital teeth will be presented and appraised.