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Effectiveness of Educational Poster to Primary and Secondary Teachers Regarding Emergency Management of Dental Trauma

This study has been completed.
Information provided by (Responsible Party):
Dr. Cecilia Young, The University of Hong Kong Identifier:
First received: October 6, 2012
Last updated: October 15, 2012
Last verified: October 2012

The poster is effective in improving the level of knowledge regarding dental trauma of primary and secondary schools teachers in Hong Kong.

A cluster randomized controlled trial was conducted in mid May 2011,to test the level of knowledge regarding dental trauma with two groups, the intervention group with posters and control group without posters. A questionnaire is used to test the level of knowledge.

Condition Intervention
Knowledge Regarding Dental Trauma
Behavioral: intervention - poster

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double Blind (Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Effectiveness of Educational Poster to Primary and Secondary Teachers Regarding Emergency Management of Dental Trauma - A Cluster Randomised Controlled Trial

Resource links provided by NLM:

Further study details as provided by The University of Hong Kong:

Primary Outcome Measures:
  • questionnaire score [ Time Frame: 2 weeks ]
    Score - The questionnaire in a related survey - Emergency management of dental trauma: knowledge of Hong Kong primary and secondary school teachers. Young et al. Hong Kong Med J 2012;18:362-70. Chinese and English - 2 sections - 14 questions. - basic demographic information, whether the respondents had received formal first aid training or acquired dental trauma information and whether they thought that they could distinguish deciduous teeth from permanent teeth and management of dental traumatic injuries. The questionnaire was pilot-tested on 81 teachers for length and comprehensibility and was pre-tested before adoption. The face validity was established by expert opinion. The reliability was tested on 41 teachers from a school (14 days), 40 paired questionnaires test-retest reliability, paired t test mean difference between the scores from the 1st and 2nd questionnaires was 0.275. The P value of the t test was 0.4559, The Pearson's product moment correlation coefficient was 0.6887.

Enrollment: 403
Study Start Date: March 2011
Study Completion Date: July 2011
Primary Completion Date: July 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: invention with poster
intervention - poster
Behavioral: intervention - poster
No Intervention: control
control - no poster

Detailed Description:

A cluster randomized controlled trial was conducted in mid May 2011, Hong Kong where no educational campaign regarding dental trauma targeting on primary and secondary school teachers was implemented before.

Lists of Primary and secondary schools were requested from the Education Bereau. Schools were invited to join the study from 1.3.2011 and then randomized to the intervention group and the control group in the unit of school using computer generated numbers.

All teachers filled in the first questionnaire and send it back to the investigator in 1 week. 3 copies of the same educational poster were given to the intervention schools, these schools were requested to display them in 1. the medical room 2. staff common room and 3 anywhere that information was usually placed for the teachers. No poster was given to the control group. After 2 weeks, the posters were removed by the teacher in charge. The same questionnaire was filled in by all the teachers in both groups and sent back in 1 week. The data were processed to show whether the poster was effective to improve the knowledge of the teachers. The study was complied with Declaration of Helsinki and ICH GCP guidelines

Primary outcome measures the score of the questionnaire


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • The targeted group of this study included teachers working in primary (US grade1-6) and secondary (US grade 7-12 plus 1 year) schools in Hong Kong, who can read Chinese or English.

Exclusion Criteria:

  • cannot read English or Chinese
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Please refer to this study by its identifier: NCT01707355

Hong Kong
Primary and Secondary Schools
Hong Kong, Hong Kong
Sponsors and Collaborators
The University of Hong Kong
Principal Investigator: Cecilia Young, BDS MPH The University of Hong Kong
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Dr. Cecilia Young, Dr Cecilia Young, The University of Hong Kong Identifier: NCT01707355     History of Changes
Other Study ID Numbers: HKCTR-1307
Study First Received: October 6, 2012
Last Updated: October 15, 2012

Keywords provided by The University of Hong Kong:
education, knowledge, poster, dental trauma

Additional relevant MeSH terms:
Wounds and Injuries
Disease Attributes
Pathologic Processes processed this record on May 22, 2017