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Prior research has demonstrated a strong association between the species of predators that co-occur with guppies and the evolution of guppy life histories. The evolution of these differences in life histories has been attributed to the higher mortality rates experienced by guppies in high-predation environments. Here, we evaluate whether there might be(More)
OBJECTIVE To compare dental age (DA) with chronological age (CA) in Somali and white Caucasian children, resident in Sheffield. DESIGN Cross-sectional study. SETTING Paediatric dentistry clinic, Charles Clifford Dental Hospital, Sheffield. SUBJECTS Somali children under 16 years of age and age- and gender-matched white Caucasian subjects. OUTCOME(More)
INTRODUCTION The aim of this study was to quantify changes in postorthodontic demineralized enamel lesion surface areas after microabrasion. METHOD The study group comprised 8 orthodontic patients (mean age,17.3 years) with multiple decalcified enamel lesions after fixed orthodontic therapy. Two demineralized areas were randomly selected for interventive(More)
OBJECTIVE There is evidence to suggest that social judgements are made on the basis of dental appearance. This study sought to determine how children view other children with fixed orthodontic appliances. DESIGN Cross-sectional, self-completion questionnaire. SUBJECTS AND METHODS Year 7 (aged 11-12 years) and year 10 (aged 14-15 years) school children(More)
BACKGROUND The position of children in society has changed with increasing emphasis on children's rights and child-centred services. This study aimed to describe the extent to which contemporary oral health research has been conducted with or on children. DESIGN A systematic review of the child dental literature from 2000-2005 was conducted. A purposive(More)
AIM There is evidence to suggest that negative social judgements are made on the basis of poor dental aesthetics. This study sought to determine how children view other children with visible incisor trauma. MATERIAL AND METHODS Year 7 (aged 11-12 years) and year 10 (aged 14-15 years) school children (the participants) were invited to look at colour(More)
This immunohistochemical study sought to determine whether there are any differences in the peptidergic innervation of these pulps and whether dental caries is associated with changes in neuropeptide expression. Mandibular first permanent molars and second primary molars (n=120) were obtained from children requiring dental extractions under general(More)
The neural status of carious teeth, particularly those associated with a painful pulpitis, is largely unknown. This study sought to determine differences in the innervation density of human primary and permanent teeth and whether caries or painful pulpitis was associated with anatomical changes in pulpal innervation. Coronal pulps were removed from 120(More)
This study sought to explore the anatomical relationships between peptidergic nerves and blood vessels within human primary and permanent teeth. Extracted primary and permanent molars (n = 120) were split longitudinally, placed in Zamboni's fixative and the coronal pulps were processed for indirect immunofluorescence. Ten-micrometre-thick serial frozen pulp(More)
The neuropeptide substance P (SP) is found within a subpopulation of nociceptive afferent nerve fibres and has been shown to be upregulated in a variety of sites following peripheral inflammation. The aim of this study was to investigate the expression of SP within human teeth, both in health and disease, and to seek a correlation between reported pain(More)