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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
Prevention of early decay in children’s teeth
Scientific title
Resin infiltration of proximal carious lesions in the primary dentition of Otago children for lesion progression reduction
Secondary ID [1] 262779 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Oral health 270487 0
Caries 270488 0
Condition category
Condition code
Oral and Gastrointestinal 270644 270644 0 0
Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
Public Health 270645 270645 0 0
Health service research

Study type
Description of intervention(s) / exposure
Caries infiltration using resin. Dose as described by ICON. This involves two administrations of approximately 7 mls each time to the lesion (the first for 3 minutes and the second for 1 minute). This will only occur once over the study and in total time will take 10 minutes.
Intervention code [1] 269119 0
Intervention code [2] 269128 0
Treatment: Other
Intervention code [3] 269129 0
Early detection / Screening
Comparator / control treatment
Fluoride (Durahat) varnish standard treatment
Control group

Primary outcome [1] 269369 0
30 % reduction in caries progression using digital radiography
Timepoint [1] 269369 0
6 months, 1 year, 18months, 2 years to tooth exfoliates
Secondary outcome [1] 279464 0
Reduced dental anxiety over time using the Modified Corah Dental Anxiety Scale
Timepoint [1] 279464 0
2 years
Secondary outcome [2] 279465 0
Patency of seal of caries lesion using Scanning Electron Microscopy and Micro-CT.
Timepoint [2] 279465 0
Once tooth exfoliated

Key inclusion criteria
Inclusion criteria for the children to take part in the study will be the presence of at least 2 proximal lesions in enamel or outer dentine in deciduous molar teeth, as detected radiographically. Lesions on the mesial of the first molars will not be included as the contact area to the canines is too narrow.
Minimum age
6 Years
Maximum age
9 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
The exclusion criteria will be medically compromised children.

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Sealed opaque envelopes
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Simple randomization using a randomization table created by computer software
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?

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

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment outside Australia
Country [1] 3768 0
New Zealand
State/province [1] 3768 0

Funding & Sponsors
Funding source category [1] 269600 0
Commercial sector/Industry
Name [1] 269600 0
Address [1] 269600 0
Elbgaustrabe 248
22547 Hamburg
Country [1] 269600 0
Primary sponsor type
University of Otago
POBox 647
Dunedin 9054
New Zealand
Secondary sponsor category [1] 266634 0
Name [1] 266634 0
D Schwass
Address [1] 266634 0
POBox 647
Dunedin 9054
Country [1] 266634 0
New Zealand

Ethics approval
Ethics application status
Ethics committee name [1] 269552 0
Lowe South Ethics Committee
Ethics committee address [1] 269552 0
C/- Ministry of Health
PO Box 5013
Ethics committee country [1] 269552 0
New Zealand
Date submitted for ethics approval [1] 269552 0
Approval date [1] 269552 0
Ethics approval number [1] 269552 0

Brief summary
Dental caries remains the most common chronic disease of childhood in New Zealand. For early caries found in between teeth, it is often particularly difficult to determine the best treatment, and there is the risk of under- or over-treatment. We are looking at children aged 7 to 9 years with decay occurring between their teeth. When it is just beginning new research shows that we may reduce the decay progressing to a filling or even an extraction using a new approach of sealing the decaying surface between the teeth. We want to see if this is the same in Otago children who are treated at the school dental clinic. If this is the case then it may change how children will be treated in the future with resin infiltration placed between teeth instead of fillings. Children will continue to receive dental care as usual so that we can see the difference this new sealant may make to the tooth. Following the loss of the tooth, teeth will undergo laboratory testing to determine the nature of the resin infiltration interface.This study will be the first in the world to incorporate community-based clinical and laboratory approaches to better understand how resin infiltration works.
Trial website
Trial related presentations / publications
Publication in 2017 Journal of Dental Research Clinical and Translational

Foster Page LA, Beckett D, Ahmadi R, Schwass DR, Leon de la Barra S, Moffat SM, Meldrum A, Thomson WM (2017). Resin infiltration of caries in primary molars in a community setting: 24-month RCT findings. Journal of Dental Research Clinical and Translational 2 (3); 287-294.
Public notes

Principal investigator
Name 32976 0
Dr Lyndie Foster Page
Address 32976 0
University of Otago
PO Box 647
Dunedin 9054
New Zealand
Country 32976 0
New Zealand
Phone 32976 0
Fax 32976 0
Email 32976 0
Contact person for public queries
Name 16223 0
Dr Dr L A Foster Page
Address 16223 0
Department of Rehabilitation
University of Otago
PO Box 647
Dunedin 9054
Country 16223 0
New Zealand
Phone 16223 0
Fax 16223 0
Email 16223 0
Contact person for scientific queries
Name 7151 0
Dr Dr L A Foster Page
Address 7151 0
Department of Rehabilitation
University of Otago
PO Box 647
Dunedin 9054
Country 7151 0
New Zealand
Phone 7151 0
Fax 7151 0
Email 7151 0

No information has been provided regarding IPD availability
Summary results
Have study results been published in a peer-reviewed journal?
Other publications
Have study results been made publicly available in another format?
Results – basic reporting
Results – plain English summary