The aberrant molar

Abstract: The eruption of the molar teeth represents the start and end of the establishment of the permanent dentition. This process often occurs without event, but occasionally abnormalities of eruption occur and most frequently this affects the third molar. This article gives an overview of the possible aetiology, diagnosis and treatment of the aberrant molar. CPD/Clinical Relevance: Awareness of the possible sequelae of unerupted or impacted molars is important in diagnosis and treatment planning. </jats:p

The aberrant canine part 1:aetiology and diagnosis

Abstract: The eruption of the permanent canine, particularly the maxillary tooth, is a milestone in dental development. Although often uneventful, occasionally there are disturbances in eruption, the management of which can be one of the more challenging aspects of orthodontics. This article is presented in two parts. Part 1 gives an overview of the possible aetiology and diagnosis of the aberrant canine tooth. CPD/Clinical Relevance: Awareness of the possible sequelae of unerupted canines is important in diagnosis and treatment planning. </jats:p

The aberrant canine part 2:treatment

Abstract: The eruption of the permanent canine, particularly the maxillary tooth, is a milestone in dental development. Although often uneventful, occasionally there are disturbances in eruption, the management of which can be one of the more challenging aspects of orthodontics. This article gives an overview of the possible treatments of the aberrant canine tooth. Clinical Relevance: Awareness of the possible sequelae of unerupted canines is important in diagnosis and treatment planning. </jats:p

Potential climatic transitions with profound impact on Europe

We discuss potential transitions of six climatic subsystems with large-scale impact on Europe, sometimes denoted as tipping elements. These are the ice sheets on Greenland and West Antarctica, the Atlantic thermohaline circulation, Arctic sea ice, Alpine glaciers and northern hemisphere stratospheric ozone. Each system is represented by co-authors actively publishing in the corresponding field. For each subsystem we summarize the mechanism of a potential transition in a warmer climate along with its impact on Europe and assess the likelihood for such a transition based on published scientific literature. As a summary, the ‘tipping’ potential for each system is provided as a function of global mean temperature increase which required some subjective interpretation of scientific facts by the authors and should be considered as a snapshot of our current understanding. <br/

Increasing frailty is associated with higher prevalence and reduced recognition of delirium in older hospitalised inpatients: results of a multi-centre study

Purpose: Delirium is a neuropsychiatric disorder delineated by an acute change in cognition, attention, and consciousness. It is common, particularly in older adults, but poorly recognised. Frailty is the accumulation of deficits conferring an increased risk of adverse outcomes. We set out to determine how severity of frailty, as measured using the CFS, affected delirium rates, and recognition in hospitalised older people in the United Kingdom. Methods: Adults over 65 years were included in an observational multi-centre audit across UK hospitals, two prospective rounds, and one retrospective note review. Clinical Frailty Scale (CFS), delirium status, and 30-day outcomes were recorded. Results: The overall prevalence of delirium was 16.3% (483). Patients with delirium were more frail than patients without delirium (median CFS 6 vs 4). The risk of delirium was greater with increasing frailty [OR 2.9 (1.8–4.6) in CFS 4 vs 1–3; OR 12.4 (6.2–24.5) in CFS 8 vs 1–3]. Higher CFS was associated with reduced recognition of delirium (OR of 0.7 (0.3–1.9) in CFS 4 compared to 0.2 (0.1–0.7) in CFS 8). These risks were both independent of age and dementia. Conclusion: We have demonstrated an incremental increase in risk of delirium with increasing frailty. This has important clinical implications, suggesting that frailty may provide a more nuanced measure of vulnerability to delirium and poor outcomes. However, the most frail patients are least likely to have their delirium diagnosed and there is a significant lack of research into the underlying pathophysiology of both of these common geriatric syndromes

The Control of Unwanted Tooth Movement: An Overview of Orthodontic Anchorage

The success of orthodontic treatment relies upon careful treatment planning, for both desired and unwanted tooth movement. The theory behind anchorage reinforcement will be considered and the current means of anchorage support and creation will be described. Methods by which the orthodontist can reduce anchorage demand and measure anchorage loss will also be discussed. Clinical Relevance: To understand the clinical applications of the theory of unwanted orthodontic tooth movement and be able to give examples of planned means of increasing anchorage and decreasing anchorage demands. </jats:p

Marine tethysuchian crocodyliform from the ?Aptian-Albian (Early Cretaceous) of the Isle of Wight, England

A marine tethysuchian crocodyliform from the Isle of Wight, most likely from the Upper Greensand Formation (late Albian, Early Cretaceous), is described. However, we cannot preclude it being from the Ferruginous Sands Formation (late Aptian), or more remotely, the Sandrock Formation (late Aptian-early Albian). The specimen consists of the anterior region of the right dentary, from the tip of the dentary to the incomplete fourth alveolus. This specimen increases the known geological range of marine tethysuchians back into the late Early Cretaceous. While we refer it to Tethysuchia incertae sedis, there are seven anterior dentary characteristics which suggest a possible relationship with the Maastrichtian-Eocene clade Dyrosauridae. We also review 'middle' Cretaceous marine tethysuchians, including putative Cenomanian dyrosaurids. We conclude that there is insufficient evidence to be certain that any known Cenomanian specimen can be safely referred to Dyrosauridae, as there are some cranial similarities between basal dyrosaurids and Cenomanian-Turonian marine 'pholidosaurids'. Future study of middle Cretaceous tethysuchians could help unlock the origins of Dyrosauridae and improve our understanding of tethysuchian macroevolutionary trends

Neutron streaming studies along JET shielding penetrations

Neutronic benchmark experiments are carried out at JET aiming to assess the neutronic codes and data used in ITER analysis. Among other activities, experiments are performed in order to validate neutron streaming simulations along long penetrations in the JET shielding configuration. In this work, neutron streaming calculations along the JET personnel entrance maze are presented. Simulations were performed using the MCNP code for Deuterium-Deuterium and Deuterium- Tritium plasma sources. The results of the simulations were compared against experimental data obtained using thermoluminescence detectors and activation foils