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To compare efficacy of casein phosphopeptide (CPP)–amorphous calcium phosphate (ACP) fluoride varnish and light-curable resin modified glass ionomer fluoride varnish (FV) in preventing white spot lesions and evaluating acid etching prior to CPP-ACPFV application on its efficacy. Molars and premolars were transected and halves divided into four groups (n = 18/group): (1) resin-modified glass ionomer FV: etched and Clinpro-XT varnish (3M ESPE, Pymble, New South Wales, Australia) application; (2) CPP-ACPFV: MI varnish (GC America, Alsip, IL) application; (3) Etch+CPP-ACPFV: etched and MI varnish application; (4) Control: etched and no surface treatment. To simulate 12 weeks in an intraoral environment, samples were subjected to thermocycling, brushing, and pH cycling. Enamel surface microhardness was evaluated at baseline and after the simulated 12 weeks. Representative samples were also assessed using scanning electron microscopy (SEM). At baseline there was no significant difference in microhardness among groups. After the simulated 12 weeks, all groups showed significant within-group differences (P <.001). Control showed the highest percentage loss of surface microhardness (89%), followed by CPP-ACPFV (58%), RMGIFV (51%), and Etch+CPP-ACPFV (24%). The control group had a significant decrease in microhardness compared to all experimental groups (P <.001). No difference was found between the RMGIFV and CPP-ACPFV varnish groups. The Etch+CPP-ACPFV group had significantly less decrease in microhardness compared to the RMGIFV (P <.001) and CPP-ACPFV groups (P <.001). With SEM, control samples showed signs of enamel surface damage, while experimental groups showed spherical particles on a relatively intact surface. RMGIFV and CPP-ACPFV are effective in reducing enamel demineralization. Acid etching the enamel surface prior to CPP-ACPFV varnish application increased its efficacy. [ABSTRACT FROM AUTHOR]

Background: We interviewed graduates from the first two cohorts of a postgraduate medical program that had a senior year longitudinal integrated clerkship (LIC) in a practice setting in rural New South Wales, Australia to determine how well their training prepared them to be junior doctors (3–4 years after graduation), and what aspects of that training they thought were particularly useful. Methods: In-depth interviews. Results: Fourteen junior doctors were interviewed. Participants reported feeling well prepared in ability to develop close relationships with clinical supervisors, good clinical and procedural skills, ability to work autonomously and work in teams, knowledge of health systems, ability to ensure self-care, and professionalism. Consensus view was that a rural placement was an excellent way to learn medicine for a variety of reasons including relationships with clinicians, less competition for access to patients, and opportunities to extend their clinical skills and act up to intern level. Conclusion: The advantages we found in the training these junior doctors received which prepared them well for internship were integral both to the longitudinal, unstructured placement, and to the fact that it was carried out in a rural area. The two aspects of these placements appear to act synergistically, reinforcing the learning experience. [ABSTRACT FROM PUBLISHER]