Promoting interpersonal skills and cultural sensitivity among dental students.

This study evaluated interpersonal communication skills among third- and fourth-year dental students during two clinical communications training programs. Students participated in two clinical communications (CC) training sessions, each comprised of four encounters with patient instructors (PIs) who were trained to enact standardized patient scenarios. Scenarios in CC1 addressed straightforward patient care situations in dentistry (e.g., bridge adjustment), while CC2 added cultural sensitivity issues to the dental scenarios. After each encounter, patient instructors used the Arizona Clinical Interviewing Rating Scale (ACIR) to rate the students' interpersonal skills and gave the students feedback on their performance. The students also received feedback and coaching from dental school faculty in debriefings after encounters with the PIs. Students anonymously rated the program at the end of each session. To evaluate the program, students' performance was compared within and between the two training sessions. Analysis showed statistically significant increases in interpersonal communication skills within each training session (p<0.05) from unsatisfactory to above satisfactory levels. Performance scores at the start of CC2 were statistically lower than at the end of CC1, suggesting that performance wanes without practice. Student evaluations of the program were very positive. Interpersonal communication skills improved during this patient instructor program.

Factorial analysis of variables influencing stress in all-ceramic crowns.

OBJECTIVE: The objective of this investigation was to evaluate the relative contribution of variables in the crown-cement-tooth system that can influence magnitude of maximum principal stress in all-ceramic crowns. METHODS.: Factorial analysis was performed to calculate the coefficients of main and interactive effects of seven variables on maximum stress distribution in a series of finite element models of an axisymmetric stylized ceramic crown-cement-tooth system. Variables investigated at two levels were selected for their clinical relevance and included those relating to crown material and geometry (thickness and cuspal incline), cement modulus and thickness, supporting tooth core, and position at which the occlusal load was applied. RESULTS: The average principal stress for all combinations of all variables was 135.1 MPa but stress magnitude ranged from 73.7 to 214.0 MPa. Crown material and thickness are of primary importance in stress magnitude but other variables (cement modulus, load position, and supporting tooth core) also contribute to the stress magnitude. Interactions between these variables can have an important influence, particularly since the stress in the crown is not necessarily sensitive to the same factors for all crown material systems. SIGNIFICANCE: Comprehensive evaluation of stress in a crown of a crown-cement-tooth system must integrate the influence of single variables and their interactions.