Is the small-group tutorial process in PBL getting more credit than it deserves?
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An operant group procedure significantly increased the frequency of here-and-now affect, feedback and empathy statements made by psychiatric patients when compared with non-reinforced patients and with base-line performances. Transfer effects were also noted when randomly selected patients from these original groups were 'seeded' into new groups during a non-reinforced session one week after training. Self-disclosure, measured by a modification of Jourard's scale, showed pre-post increases, but the expected interaction with reinforcement was non-significant (P less than 0.20). Scores on the Mooney Problem Check List were unaffected by the procedures. No apparent problem resulted from the absence of a therapist during the group process and it was concluded that the operant group procedures may prove useful both as an adjunct to and as preparation for other therapeutic methods.
The patient's perception of his therapist seems to be one of the major components of the therapeutic relationship. The different psychotherapeutic setting seem to influence the dynamics of the therapeutic relationship along with some other therapist and patient variables. Two groups of patients treated in the Department of Neurotic Disorders of the Institute of Psychiatry and Neurology (Warsaw) were investigated 2 times during their course of psychotherapies (individual, group). The perception of the therapist was measured by the Adjective Raging Scales constructed for the purpose of this research. These data were correlated with the results of the ACL (Gough) as a measure of personality traits and with the intensity of the clinical symptoms.
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This work evaluated the remineralization of demineralized enamel of pits and fissures of human third molars sealed with a glass ionomer cement (Fuji IX, GC Corporation--Japan) or with a Bis-GMA sealant (Delton--Dentsply). Ten volunteers participated in this in situ study that consisted of two thirty-day periods using intra-oral devices, with a weeks interval in between. Four experimental treatment procedures and one control were randomly assigned to the volunteers specimens: Group I, no treatment, control; Group II, artificial caries process; Group III, same treatment as Group II, but sealed with Delton (Dentsply); Group IV, same treatment as Group II, but sealed with Fuji IX (GC Corporation--Japan); Group V, same treatment as Group II and no sealing. Groups I and II were not submitted to the oral environment and served as controls. After a period of 30 days in the oral environment, the specimens were removed from the devices, embedded in acrylic resin, ground flat and polished. Then, Knoop hardness tests were performed, with a 25 g static load applied for 15 seconds. The measurements were made from the base of the fissure up to an opening of 600 microm, pre-established between the inclines of the cusps. Three indentations were then made, located at 25, 75, and 125 microm in depth from the outer enamel margin and 100 microm apart from each other (Micromet 2003). The Brieger F and Bonferronis tests were applied to the measurements. It was concluded that sealing with the glass ionomer cement Fuji IX was capable of making the enamel of pits and fissures more resistant by increasing the value of Knoop hardness.
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Blood glycated hemoglobin concentration reflects long-term serum glucose levels in dogs. In this study, the effects of several diseases on blood glycated hemoglobin levels have been evaluated. For this study, blood samples were drawn from 93 unhealthy dogs. The animals were distributed into 10 groups according to pathological process (group 1, digestive problems; group 2, leishmaniasis; group 3, anemia; group 4, dermatological disorders; group 5, urinary problems; group 6, cardiorespiratory problems; group 7, diabetes mellitus; group 8, insulinoma; group 9, general diseases; group 10, control group). Blood glucose and glycated hemoglobin concentrations and hemoglobin and hematocrit values were analyzed in all the animals. In diabetic dogs, a strong increase in blood glycated hemoglobin was observed when compared with the other groups (P < 0.01). In contrast, dogs with insulinoma showed a decrease in blood glycated hemoglobin, though significant differences were not reported in all cases. No change in blood glycated hemoglobin concentrations were reported in dogs affected by other diseases. So, we can suppose that only the chronic alterations in glucose metabolism (chronic hyper- or hypoglycemia) can induce significant changes on the blood glycated hemoglobin concentrations in dogs.
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