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CompletedNCT02066987Updated Sep 16, 2014

The Effects of Two Volitional Interventions to Improve Oral Health Behaviour Among Iranian Adolescents

A Phase 2 interventional study of Implementation intention and Action planning in Oral Health Behavior Change, sponsored by Qazvin University Of Medical Sciences. Completed at 1 site in Iran. Open to participants aged 14 Years to 19 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2014-09-16.

Sponsored by Qazvin University Of Medical Sciences · Phase 2, Interventional, and Prevention

Phase
Phase 2
Study type
Interventional
Enrollment
1,110
Allocation
Randomized
Ages
14 Years to 19 Years
Sex
All
01

Study summary

the present study had two main aims. First, due to the current underconsumption of dental brush adolescents, the investigators should apply a volitional intervention to increase oral health behvaiour in adolescents. Second, the investigators aim to compare the effectiveness of action planning intervention and implementation intention will improve oral health behavior in adolescents.

Read the detailed description

This is a study to explore the impact of two volitional interventions on brushing intentions , behaviors and clinical characteristics among a sample of adolescent students.

02

Conditions studied

  • Oral Health Behavior Change

Keywords

  • Action planning, Implementation intention
03

In context

Lead sponsor

Qazvin University Of Medical Sciences is the lead sponsor of 34 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
14 Years to 19 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • 14 Years to 19 Years
  • Ability to understand Persian language Adolescents attending high schools in Qazvin

Exclusion criteria

Exclusion Criteria:

  • participate in any kind of oral health education and promotion programs
  • undergoing orthodontic treatment
05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
1,110 participants (actual)

Study arms

  • Experimental
    Implementation intention

    It may be helpful for you to plan when and where you will brush your teeth each day over the next month. Please write below when, where, and after what activity you will brush your teeth (e.g., at 8.00 a.m. and 9.00 p.m. in the bathroom after eating breakfast/dinner). Because you should brush your teeth twice a day, please make two plans. If it is \_\_\_\_\_ (WHEN) at or in \_\_\_\_\_\_\_ (WHERE) before/after \_\_\_\_\_\_ (ACTIVITY), then I will brush my teeth! If it is \_\_\_\_\_ (WHEN) at or in \_\_\_\_\_\_\_ (WHERE) before/after \_\_\_\_\_\_ (ACTIVITY), then I will brush my teeth!

    Behavioral: Implementation intention

  • Experimental
    Action planning

    It may be helpful for you to plan when and where you will brush your teeth each day over the next month. Please write below when, where, and after what activity you will brush your teeth (e.g., at 8.00 a.m. and 9.00 p.m. in the bathroom after eating breakfast/dinner). Because you should brush your teeth twice a day, please make two plans. I will brush my teeth at \_\_\_(WHEN) at or in \_\_\_\_(WHERE) before/after \_\_\_ (ACTIVITY). I will brush my teeth at \_\_\_(WHEN) at or in \_\_\_\_(WHERE) before/after \_\_\_ (ACTIVITY).

    Behavioral: Action planning

  • Active comparator
    active control group

    Participants in the active control group will receive an educational pamphlet containing what it is dental brushing, why it is done, and how it is done.

    Behavioral: active control group

Interventions

  • BehavioralImplementation intention

    It may be helpful for you to plan when and where you will brush your teeth each day over the next month. Please write below when, where, and after what activity you will brush your teeth (e.g., at 8.00 a.m. and 9.00 p.m. in the bathroom after eating breakfast/dinner). Because you should brush your teeth twice a day, please make two plans. If it is \_\_\_\_\_ (WHEN) at or in \_\_\_\_\_\_\_ (WHERE) before/after \_\_\_\_\_\_ (ACTIVITY), then I will brush my teeth! If it is \_\_\_\_\_ (WHEN) at or in \_\_\_\_\_\_\_ (WHERE) before/after \_\_\_\_\_\_ (ACTIVITY), then I will brush my teeth!

  • BehavioralAction planning

    It may be helpful for you to plan when and where you will brush your teeth each day over the next month. Please write below when, where, and after what activity you will brush your teeth (e.g., at 8.00 a.m. and 9.00 p.m. in the bathroom after eating breakfast/dinner). Because you should brush your teeth twice a day, please make two plans. I will brush my teeth at \_\_\_(WHEN) at or in \_\_\_\_(WHERE) before/after \_\_\_ (ACTIVITY). I will brush my teeth at \_\_\_(WHEN) at or in \_\_\_\_(WHERE) before/after \_\_\_ (ACTIVITY).

  • Behavioralactive control group

    Participants in the active control group will receive an educational pamphlet containing what it is dental brushing, why it is done, and how it is done.

06

What researchers measure

Primary outcomes

  1. changes in frequencies of dental brushing

    Time frame: changes from baseline, one month after the intervention and six months follow-up

Secondary outcomes

  1. changes in psychological predictors of dental brushing (intention ,perceived behavioural control and Self-monitoring)

    Time frame: changes from baseline, one month after the intervention and six months follow-up

  2. Changes in Community Periodontal Index (CPI)

    Time frame: changes from baseline, one month after the intervention and six months follow-up

  3. Changes in Turesky Modification of the Quigley-Hein Plaque Index

    Time frame: changes from baseline, one month after the intervention and six months follow-up

  4. Oral health related quality of life

    Time frame: changes from baseline and six months follow-up

  5. The frequency of the use of planning

    The number of planning strategies is used by the adolescents before, at baseline, one month after the intervention and six months follow-up

    Time frame: changes from baseline, one month after the intervention and six months follow-up

07

Study locations

1 site
  • Department of Public Health, Qazvin University of Medical Sciences
    Qazvin, Qazvin Province 3419759811, Iran
08

References and documents

Publications

  • Pakpour AH, Gholami M, Gellert P, Yekaninejad MS, Dombrowski SU, Webb TL. The Effects of Two Planning Interventions on the Oral Health Behavior of Iranian Adolescents: A Cluster Randomized Controlled Trial. Ann Behav Med. 2016 Jun;50(3):409-18. doi: 10.1007/s12160-015-9767-3. PubMed 26791023 ↗
09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Feb 2014, a primary completion of Sep 2014 and a completion of Sep 2014. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 17, 2014
First posted
Feb 20, 2014
Start
Feb 2014
Primary completionActual
Sep 2014
CompletionActual
Sep 2014
Last update
Sep 16, 2014
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 16, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02066987
Lead sponsor
Qazvin University Of Medical Sciences
Responsible party
Amir H Pakpour (Vice Chancellor for Research, Qazvin University Of Medical Sciences) — Principal investigator
First posted
Feb 20, 2014
Start date
Feb 2014
Primary completion
Sep 2014
Completion
Sep 2014
Last update
Sep 16, 2014
View the source record on ClinicalTrials.gov ↗

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