Particle acceleration and loss in the million electron Volt (MeV) energy range (and above) is the least understood aspect of radiation belt science. In order to measure cleanly and separately both the energetic electron and energetic proton components, there is a need for a carefully designed detector system. The Relativistic Electron-Proton Telescope (REPT) on board the Radiation Belt Storm Probe (RBSP) pair of spacecraft consists of a stack of high-performance silicon solid-state detectors in a telescope configuration, a collimation aperture, and a thick case surrounding the detector stack to shield the sensors from penetrating radiation and bremsstrahlung. The instrument points perpendicular to the spin axis of the spacecraft and measures high-energy electrons (up to ∼20 MeV) with excellent sensitivity and also measures magnetospheric and solar protons to energies well above D.N. Baker ( ) • V.

Particle acceleration and loss in the million electron Volt (MeV) energy range (and above) is the least understood aspect of radiation belt science. In order to measure cleanly and separately both the energetic electron and energetic proton components, there is a need for a carefully designed detector system. The Relativistic Electron-Proton Telescope (REPT) on board the Radiation Belt Storm Probe (RBSP) pair of spacecraft consists of a stack of high-performance silicon solid-state detectors in a telescope configuration, a collimation aperture, and a thick case surrounding the detector stack to shield the sensors from penetrating radiation and bremsstrahlung. The instrument points perpendicular to the spin axis of the spacecraft and measures high-energy electrons (up to ∼20 MeV) with excellent sensitivity and also measures magnetospheric and solar protons to energies well above D.N. Baker ( ) • V.

The Australian Government endorsed a national evidence based oral health model when it introduced the first Nursing Home Oral and Dental Health Plan in 2010. Called Better Oral Health in Residential Care, it promotes a multidisciplinary approach with doctors, nurses, care workers and dental professionals sharing responsibility for the four key processes of oral health screening, oral health care planning, daily oral hygiene and access to dental treatment. Frail and dependent residents are most conveniently treated on‐site, hence an aged care/dental partnership is encouraged to facilitate the use of portable dental equipment in the delivery of dental care. Currently, few dentists provide services to residential aged care facilities (RACFs), with loss of clinical time in practice, difficulty in providing clinical care in a non‐dental environment and lack of referral pathways from the RACFs to the dentists contributing to the problem. The need to establish a model of care involving dental hygienists/oral health therapists in RACFs has merit. Minimal intervention treatment using glass ionomer cement (GIC) and silver fluoride is ideal in aged care. However, GIC has limitation in dry mouths with low pH caused by polypharmacy or disease. Palliative and definitive treatment techniques need to be individualized with consideration of a patient's ability to maintain their own mouths as well as their mental and physical competence. The range of products available to address the oral diseases common to the frail elderly is growing. The oral health care provider is required to establish a preventive regime that is tailored to the patient's needs, is realistic and under revision as the patient's needs change.

Over the past 70 years, the global population and age structure have been changing rapidly. Analyses from the 2017 Global Burden of Diseases, Injuries, and Risk Factors Study forecasted a continuation of global ageing throughout the remainder of the 21st century, creating major challenges for health-care systems to ensure healthy longevity for ageing societies. Oral health is an intrinsic constituent of general health and wellbeing; however, oral health is largely overlooked on the global health agenda. Oral conditions are mostly preventable or treatable, yet older people often do not receive the necessary routine care to maintain a good standard of oral health. The neglect of oral health constitutes a failure of global health policy and a failure to deliver the basic human rights of older people. The aim of this Personal View is to encourage a refreshed vision of oral health, enabling policy makers to recognise the implications of poor oral health in older adults. We call for urgent action to manage the projected challenges throughout the coming decades, to ensure that additional years of life are spent in a state of good health and to help mark global ageing, not as a burden, but as a major anthropological achievement.