Proposal for improving the system of physical therapy education and the Korean physical therapist licensing examination based on a comparison of the systems in World Confederation for Physical Therapy member countries / 보건의료교육평가

No abstract available.

Is there an agreement among the items of the Korean physical therapist licensing examination, learning objectives of class subjects, and physical therapists' job descriptions? / 보건의료교육평가

PURPOSE: To determine the agreement among the items of the Korean physical therapist licensing examination, learning objectives of class subjects, and physical therapists' job descriptions. METHODS: The main tasks of physical therapists were classified, and university courses related to the main tasks were also classified. Frequency analysis was used to determine the proportions of credits for the classified courses out of the total credits of major subjects, exam items related to the classified courses out of the total number of exam items, and universities that offer courses related to the Korean physical therapist licensing examination among the surveyed universities. RESULTS: The proportions of credits for clinical decision making and physical therapy diagnosis-related courses out of the total number credits for major subjects at universities were relatively low (2.06% and 2.58%, respectively). Although the main tasks of physical therapists are related to diagnosis and evaluation, the proportion of physiotherapy intervention-related items (35%) was higher than that of examination and evaluation-related items (25%) on the Korean physical therapist licensing examination. The percentages of universities that offer physical therapy diagnosis and clinical decision making-related courses were 58.62% and 68.97%, respectively. CONCLUSION: Both the proportion of physiotherapy diagnosis and evaluation-related items on the Korean physical therapist licensing examination, and the number of subjects related to clinical decision making and physical therapy diagnosis in the physical therapy curriculum, should be increased to ensure that the examination items and physical therapy curriculum reflect the practical tasks of physical therapists.

The assessment of abutment screw stability between the external and internal hexagonal joint under cyclic loading / 대한치과보철학회지

STATEMENT OF PROBLEM: Currently, many implant systems are developed and divided into two types according to their joint connection: external or internal connection. Regardless of the connection type, screw loosening is the biggest problem in implant-supported restoration. PURPOSE: The purpose of this study is to assess the difference in stability of abutment screws between the external and internal hexagonal connection types under cyclic loading. MATERIAL AND METHODS: Each of the 15 samples of external implants and internal abutments were tightened to 30 N/cm with a digital torque gauge, and cemented with a hemispherical metal cap. Each unit was then mounted in a 30degrees. inclined jig. Then each group was divided into 2 sub-groups based on different periods of cyclic loading with the loading machine (30 N/ cm - 300 N/cm,14 Hz: first group 1 x 10(6), 5 x 10(6) cyclic loading; second group 3 x 10(6), 3 x 10(6) for a total cyclic loading of 6 x 10(6) The removal torque value of the screw before and after cyclic loading was checked. SPSS statistical software for Windows was used for statistical analysis. Group means were calculated and compared by ANOVA, independent t-test, and paired t-test with alpha = 0.05. RESULTS: In the external hexagonal connection, the difference between the removal torque value of the abutment screw before loading, the value after 1 x 10(6) cyclic loading, and the value after 1 x 10(6), and additional 5 x 10(6) cyclic loading was not significant. The difference between the removal torque value after 3 x 10(6) cyclic loading and after 3 x 10(6), and additional 3 x 10(6) cyclic loading was not significant. In the internal hexagonal connection, the difference between the removal torque value before loading and the value after 1 x 10(6) cyclic loading was not significant, but the value after 1 x 10(6), and additional 5 x 10(6) cyclic loading was reduced and the difference was significant (P < .05). In addition, in the internal hexagonal connection, the difference between the removal torque value after 3 x 10(6) cyclic loading and the value after 3 x 10(6), and additional 3 x 10(6) cyclic loading was not significant. CONCLUSION: The external hexagonalconnection was more stable than the internal hexagonal connection after 1 x 10(6), and additional 5 x 10(6) cyclic loading (t = 10.834, P < .001). There was no significant difference between the two systems after 3 x 10(6), and additional 3 x 10(6) cycles.

An influence of abutment materials on a screw-loosening after cyclic loading / 대한치과보철학회지

STATEMENT OF PROBLEM: A phenomenon of screw-loosening in implant abutment is frequently occurred in a single and multiple implant restoration. PURPOSE: This study was performed to evaluate an effect of abutment material on screw-loosening before and after a cyclic loading. In a single-tooth implant , different materials of abutment, Type III Gold alloy and Zirconium composite(ZrO2/Al2O3) were used. MATERIAL AND METHOD: The Gold alloy(Type III) and Zirconium composite(ZrO2/Al2O3) were used to make a superstructure of implant, the one of types of UCLA, Each group was constituted of 5 sample with a 30-degree offset angulated loading platform. The external hexagonal fixture was rigidly hel d in a special holding zig to ensure solid fixation without rotation during the tightening and a cyclic loading. A Titanium-alloy screw was used to connect and controlled to be tighten in 20Ncm torque by a digital torque gauge. A 20 times of consecutive closing/opening cycle were performed to evaluate the immediate torque loss. In 5 sample of each material group, an initial opening torque was recorded during 3 closing/opening cycle, then 2Hz, 200N, 1,000,000 cyclic loadings were performed, then a opening torque was evaluated. RESULT & CONCLUSION: 1. In this limited study, titanium alloy screw tightened in 20Ncm, a cold-welding phenomen on was not observed during the 20 times of closing/opening cycle(p=0.11, p=0.18). 2. In titanium alloy abutment screw, repeated opening and closing of the screw caused to progressive decrease of opening torque(p=0.014). 3. The difference in preload of screw between gold alloy abutment and ceramic(ZrO2/Al2O3) abutment was not significant(p=0.78). 4. The difference in torque loss of screw between gold alloy abutment and ceramic(ZrO2/Al2O3) abutment was not significant after 2Hz,200N, 1,000,000 cyclic loading(p=0.92). 5. In titanium alloy abutment screw tightened by 20Ncm, the screw loosening was not significant on each group after 2Hz, 200Ncm, 1,000,000 cyclic loading(p=0.59).