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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Type of registration
Prospectively registered

Titles & IDs
Public title
Dental therapist treatment of early childhood dental decay among preschool children
Scientific title
Effectiveness of dental therapist treatment of early childhood dental caries among preschool children
Secondary ID [1] 280418 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
The treatment of early childhood dental caries 286387 0
Condition category
Condition code
Oral and Gastrointestinal 286636 286636 0 0
Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon

Study type
Description of intervention(s) / exposure
Treatment of early childhood dental caries by school dental therapists using the Atraumatic Restorative Treatment approach (ART) compared with the standard care provided by dentists within public dental services. Children will have teeth requiring restorations treated using hand instruments, without the use of local analgesia and the prepared tooth restored with a glass-ionomer cement. The duration of each treatment session is expected to last approximately 15-20 minutes. Preventive application of fluoride varnish to interproximal areas and areas with white spot lesions will also be undertaken every 6 months. Children will be assessed 12 months after treatment completed
Intervention code [1] 284773 0
Treatment: Other
Comparator / control treatment
Standard dental treatment provided by dentists within public dental services using standard treatment protocols. Children requiring restorative treatment will have teeth prepared using engine driven instruments and local analgesia, and the prepared cavity restored with the material chosen at clinician's discretion. Preventive therapeutic agents will be provided the discretion of the treating clinician. Children will be evaluated 12 months after treatment.
Control group

Primary outcome [1] 287035 0
Quality of restorations will be assessed at 12 months following the criteria of Frencken (1996) by examining each child participant.
Timepoint [1] 287035 0
Evaluated 12 months after post intervention
Primary outcome [2] 287036 0
Incidence of dental caries will be evaluated after 12 months using the criteria of Drury (1999)by a clinical examination of each child participant.
Timepoint [2] 287036 0
Evaluated after 12 months
Secondary outcome [1] 297254 0
Child oral health-related quality of life will be evaluated by parent completed questionnaire of ECOHIS of Pahel (2007) at baseline and at the 12 month clinical examination.
Timepoint [1] 297254 0
evaluated at baseline and after 12 months
Secondary outcome [2] 297255 0
cost-effectiveness of the intervention using cost-consequence analysis. Input costs will be derived from the salary of clinicians and dental assistants and estimates of time spent in
providing care (including re-treatments) will be derived from information recorded in clinical records of study participants and Public Dental Services' Patient Management System. Material costs will also be estimated from clinical records on type and amount of materials used and the cost of materials (obtained from Public Dental Service). Fixed costs (buildings and infrastructure) and overheads and utility costs are common and similar in magnitude to both arms of the trial and will not be considered. Differences in costs and in
effectiveness will be compared in a cost consequence analysis using the primary and secondary effectiveness measures.
Timepoint [2] 297255 0
Evaluated at the conclusion of the trial after 24 months
Secondary outcome [3] 297256 0
Parent/carer acceptability of care provided. Focus group interviews will be undertaken with a sample of study participants at the conclusion of the study. Nvivo9 computer software will be used to code the transcripts from the focus groups. Emergent themes from the focus groups will then be explored. Transparent validation of emergent themes and content will be performed by using two coders. Thematic analysis will be performed as such an approach allows for contextual differences between perceptions, experiences and belief to be developed and explored.
Timepoint [3] 297256 0
Evaluated at the conclusion of the trial after 24 months

Key inclusion criteria
Children aged 4 years or younger.
parent/carer able to communicate effectively in English.
Child has early childhood dental caries.
Minimum age
No limit
Maximum age
4 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
Child with pain from dental caries and requires urgent/emergency dental treatment.
Child has medical conditions requiring specialist care or require hospitalisation.

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Consenting parent/child dyad allocated to intervention or comparison using computer-generated randomised blocks. Central trial coordinator will allocate to intervention or control group using table of random numbers for blocks upon receipt of completed and signed consent.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Computer-generated randomised blocks.
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?

Intervention assignment
Other design features
Not Applicable
Type of endpoint(s)
Statistical methods / analysis

Recruitment status
Not yet recruiting
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)

Funding & Sponsors
Funding source category [1] 285173 0
Government body
Name [1] 285173 0
Health Department Western Australia: Targeted Research Fund
Address [1] 285173 0
Research Development Unit
Department of Health
PO Box 8172 Perth Business Centre WA 6849
Country [1] 285173 0
Primary sponsor type
Government body
Dental Health Services
43 Mt Henry Road Como, 6152
Western Australia
Secondary sponsor category [1] 284041 0
Name [1] 284041 0
Address [1] 284041 0
Country [1] 284041 0

Ethics approval
Ethics application status
Ethics committee name [1] 287180 0
University of western Australia Human Research ethics Committee
Ethics committee address [1] 287180 0
Human Research Ethics Committee
Research Services, University of Western Australia
35 Stirling Highway, Crawley WA 6009.
Ethics committee country [1] 287180 0
Date submitted for ethics approval [1] 287180 0
Approval date [1] 287180 0
Ethics approval number [1] 287180 0

Brief summary
The aim of the study is to compare the effectiveness of school dental therapist treatment of early childhood caries against the standard care within Dental Health Services of dentist provided treatment of early childhood caries among children 4 years of age or younger.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 34121 0
Address 34121 0
Country 34121 0
Phone 34121 0
Fax 34121 0
Email 34121 0
Contact person for public queries
Name 17368 0
peter arrow
Address 17368 0
43 Mt Henry Road
Como, 6152
Perth, Western Australia
Country 17368 0
Phone 17368 0
+61 08 93130600
Fax 17368 0
Email 17368 0
Contact person for scientific queries
Name 8296 0
peter arrow
Address 8296 0
43 Mt Henry Road
Como, 6152
Perth, Western Australia
Country 8296 0
Phone 8296 0
+61 08 93130600
Fax 8296 0
Email 8296 0

No information has been provided regarding IPD availability
Summary results
No Results