The Efficacy of Educational Interventions in Improving School Teachers' Knowledge of Attention Deficit Hyperactivity Disorder

BACKGROUND

Well-trained primary school teachers should be competent in recognizing attention deficit hyperactivity disorder (ADHD) in students and be able to assist in providing care and support.

OBJECTIVES

This study intends to assess primary school teachers' knowledge of ADHD and evaluate the effectiveness of a short-term educational intervention.  Methods: A quasi-experimental quantitative study was conducted among primary school teachers in Jazan, Saudi Arabia. A two-hour educational intervention was designed and run in six schools using a specific knowledge rating scale before and after the application of the intervention.  Results: A total of 150 primary school teachers were included in this study, of which 64% were males, 51.3% were in the age group of 40-49 years, and 28% had teaching experience of more than 20 years. Regarding ADHD knowledge, the pre-intervention knowledge of the general criteria, symptoms and diagnosis, and treatment was considered adequate in 3.3%, 16.7%, and 2.7% of the participants, respectively, which improved post-intervention to 22%, 54.7%, and 19.3%, respectively. There was a significant association between the pre-intervention knowledge of the general criteria and the gender and between the knowledge of symptoms and diagnosis and the attendance of ADHD workshop by the participants. Also, there was a significant association between the participants' age, residence experience, attendance of ADHD workshops, and the general criteria and treatment domains.

CONCLUSIONS

 Most primary school teachers in Jazan have insufficient knowledge of ADHD. Using a knowledge improvement intervention can substantially improve the teachers' knowledge. Therefore, it is necessary to incorporate thoughtful knowledge improvement programs into the educational curricula for teachers.

Effect of prosthetic framework material, cantilever length and opposing arch on peri-implant strain in an all-on-four implant prostheses

Aim

To evaluate the effect of prosthetic framework material and cantilever length on peri-implant strain in mandibular all-on-four implant-supported prostheses with different types of arch antagonist forces.

Materials and Methods

Models simulating a completely edentulous mandibular arch fabricated in heat-cured acrylic resin were used. On the acrylic models, four implants were placed at regions 34, 32, 42, and 44 simulating all-on-four implant placements. Implant-supported screw-retained fixed prosthesis frameworks were fabricated using three different materials (cobalt-chromium, zirconia, and polyetheretherketone) and with three different cantilever lengths (zero mm, 15 mm, and 25 mm). Strain gauges were attached on the model at the buccal and lingual positions of each implant. Forces simulating opposing natural dentition, conventional complete denture, and the parafunctional habit were applied to the models. The peri-implant strain in each strain gauge was recorded.

Results

Least peri-implant strains (67 microstrains) were observed when forces simulating conventional complete dentures were applied on the models and the highest peri-implant strains (9091 microstrains) were observed when forces simulating parafunctional habit were applied. One-way ANOVA test followed by Tukey's post hoc analysis was performed to compare the mean deformation scores between different materials at 50 N load. The level of significance [P-value] was set at P < 0.05. Tests showed significant differences between zero mm and the other types in all the different materials, and also between 1.5 x AP and 2.5 x AP for Zirconia and Peek material at P = 0.02 & P = .008, respectively. The results showed that the type of framework material, cantilever length, and occlusal forces from the opposing arch influence the peri-implant strain in the bone in all-on-four implant-supported prostheses.

Conclusion

Rehabilitation of a single, completely edentulous arch with implant-supported prostheses should consider the situation of the opposing arch. The choice of framework material, as well as the cantilever length, should be altered based on the forces from the opposing arch.