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Trial registered on ANZCTR
Registration number
ACTRN12612000593831
Ethics application status
Approved
Date submitted
8/05/2012
Date registered
1/06/2012
Date last updated
3/09/2013
Type of registration
Prospectively registered
Titles & IDs
Public title
The Hall technique in preschool children
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Scientific title
Effectiveness of a simplified method of managing carious primary molar teeth in preschool children using preformed metal crowns- (Hall technique) Phase 1
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Secondary ID [1]
280364
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nil
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Universal Trial Number (UTN)
U1111-1130-1659
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
dental caries
286337
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Condition category
Condition code
Oral and Gastrointestinal
286581
286581
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0
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Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Modified stainless steel crown technique on primary molars
to seal in caries
Review 6 and 12 months after placement
Duration : 15 minutes on one visit
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Intervention code [1]
284730
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Treatment: Surgery
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Comparator / control treatment
no control group
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Percentage of failure at 12 months
Failure classified into major and minor failure
Abscess or irreversible pulpitis in the tooth with the Hall's crown will be classified as a 'Major failure', whilst 'minor failures' would be: caries at the margin of the crown, crown worn through, crown lost, first permanent molar impacting and separator placed.
A 'Successful' outcome is a tooth with a Hall crown that has neither a 'Major' or 'Minor' failure.
The assessment will be through both clinical and radiographic assessment
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Assessment method [1]
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Timepoint [1]
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at 6 months and 12 months after placement of Hall crown
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Secondary outcome [1]
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Acceptability of Hall technique to public oral health practitioners, preschool children and their primary carers
Assessment via questionaires administered verbally to primary carers and structured interviews with public oral health practitioners
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Assessment method [1]
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Timepoint [1]
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at placement of Hall crowns and at 12 months after placement
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Eligibility
Key inclusion criteria
greater than 3 years of age and less than 6 years of age
high risk of decay
co-operative for radiographs and treatment in dental clinic
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Minimum age
36
Months
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Maximum age
71
Months
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
immunocompromised
at risk of infective endocarditis
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
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Who is / are masked / blinded?
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Intervention assignment
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Active, not recruiting
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Date of first participant enrolment
Anticipated
19/06/2012
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Actual
19/06/2012
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Date of last participant enrolment
Anticipated
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Actual
5/03/2013
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
14
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
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Charities/Societies/Foundations
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Name [1]
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Dental Health Services Victoria
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Address [1]
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720 Swanston St
Carlton 3053
Victoria
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Country [1]
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Australia
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Primary sponsor type
Charities/Societies/Foundations
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Name
Dental Health Services Victoria
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Address
720 Swanston St
Carlton 3053
Victoria
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Country
Australia
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Secondary sponsor category [1]
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University
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Name [1]
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The University of Melbourne
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Address [1]
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720 Swanston Street
Parkville 3053
Victoria
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Country [1]
284003
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Australia
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Secondary sponsor category [2]
284004
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Other
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Name [2]
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North Richmond Community Health Centre
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Address [2]
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23 Lennox Street
Richmond 3121
Victoria
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Country [2]
284004
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Australia
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Dental Health Services Victoria Human Research Ethics Committee
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Ethics committee address [1]
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720 Swanston Street Carlton 3053 Victoria
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Ethics committee country [1]
287155
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Australia
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Date submitted for ethics approval [1]
287155
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Approval date [1]
287155
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02/03/2012
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Ethics approval number [1]
287155
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247
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Summary
Brief summary
There are a large number of disadvantaged pre-school children who suffer tooth decay. Unfortunately, many of them require extensive treatment necessitating general anaesthesia with its risks and high costs. Preformed stainless steel crowns are the best method of restoring decayed baby molar teeth and a simplified method of placing them, without using general anaesthesia, has been found to be successful with school age children. We wish to test whether this method would be successful with pre-school children at high risk to dental caries in a community dental clinic at a success rate comparable to conventionally placed stainless steel crowns. Research Investigators include the Director of Clinical Leadership, Education and Research of Dental Health Services Victoria; senior academic staff of the Melbourne Dental School, University of Melbourne; the Manager Oral Health Program North Richmond Community Health, and a senior dentist from the North Richmond Community Dental Clinic. Participants will include North Richmond Community Health management and staff, preschool children patients (and their primary carers) of the North Richmond Community Dental Clinic. As part of the standard clinical care for patients at high risk to dental caries, the preschool children will have x-rays taken beforehand to diagnose decay and exclude from the study patients with extensive disease for which this treatment is not indicated. Multi-language brochures and dental examination with questionnaire will precede an interview to elicit verbal and written consent. Immediately after treatment, carers will be asked to fill in another questionnaire. At the 12 months review visit another x-ray will be taken, again according to standard clinical care for patients at high risk to dental caries, and a further questionnaire filled. The prime statistic will be the number of crowns deemed to be a success at six months, and 12 months (for Phase 1 of the study), using criteria established by previous research. Secondary findings will be the acceptance of this mode by patients, carers and staff. A key aspect is that, in appropriately selected cases, this treatment does not drill out any of the decay; so, does not require any injection of local analgesia, is less uncomfortable, and so is faster and likely to be better tolerated by pre-school children than conventional stainless steel crowns. A key issue is ascertaining that there is no unexpected progression of decay with poor outcomes. Research has shown that the decay of deciduous molars that is isolated under the crowns ceases and causes no further destruction to the teeth.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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A/Prof Hanny Calache
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Address
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720 Swanston Street
Carlton
Victoria 3053
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Country
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Australia
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Phone
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+61 3 93411291
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Rachel Martin
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Address
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Dental Health Services Victoria
720 Swanston Street
Carlton 3053
Victoria
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Country
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Australia
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Phone
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61 3 9341 1720
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Hanny Calache
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Address
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Dental Health Services Victoria
720 Swanston Street
Carlton 3053
Victoria
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Country
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Australia
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Phone
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61 3 9341 1291
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Fax
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Email
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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