Dent. J., Volume 2, Issue 2 (June 2014) – 2 articles , Pages 52-77

Objective: To investigate whether dental hygienist students through peer-learning can increase their ability to conduct motivational interviewing (MI) compared with students who follow the regular curriculum. The aim was also to get an insight into the process of learning of MI. Materials and Methods: Ten dental hygienist students were randomly selected to either the intervention group (IG) or the control group (CG). Students in the IG performed two MI sessions, which were discussed in a peer group and with a tutor. Thereafter the students performed the third MI sessions, which was evaluated by “Motivational Interviewing Treatment Integrity Code, Version 3.1”. The CG consisted of five students who followed the regular curriculum in the education and they conducted one MI session. A questionnaire was used to study how students reflected before and after these MI sessions. The analysis was performed by using descriptive statistics and for the comparison between groups the Mann-Whitney test was used. Results: The students in the IG used significantly more, simple and complex reflections (p < 0.05) compared to the CG. The IG gave also significantly less information during the counseling, and thereby asked more open-ended questions than the CG (p < 0.05). Both groups planned their MI sessions carefully by preparing questions before they met the patients. Conclusion: Dental hygienist students in the present study increased their skills in motivational interviewing by peer-learning from other students and from a tutor, compared to a control group. Full article

The aim of this study was to evaluate the interfacial microgaps generating between different materials and between materials and dentin after polymerization of the composite restorations, using SEM. Methods: The materials investigated were a composite, an adhesive, a RMGI, and a calcium hydroxide. Thirty third molars were selected and two circular class V cavities (5 mm × 3 mm) for each tooth were made. The teeth were randomly assigned into six groups and restored with a combination of the materials. The specimens were subjected to thermocycling and each tooth was sectioned mesiodistally in two halves. Each half was sectioned along the longitudinal axis through the center of the restorations to obtain a slice of 2 mm. The specimens were examined under SEM. The interfaces between the liners, the liners and dentin, and between the liners and the composite were examined for microgaps. Results: The results showed that there was not any significant difference in the mean width of microgaps in the interfaces between Dycal-dentin and Vitrebond-dentin (p>0.05). However, the width of microgaps in the interfaces between dentin-Clearfil Tri-S Bond was significantly smaller (p<0.05). The use of Clearfil Tri-S Bond reduced the possibility of microgap formation between the bonded interface and the materials tested. Full article