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Northland Hall Technique Project: A randomised controlled clinical trial of 4 to 8 years old children having stainless steel crowns with either the Hall or conventional technique to examine if one method is superior to the other.

Northland Hall Technique Project:A randomised controlled clinical trial of 4 to 8 years old children having stainless steel crowns with either the Hall or conventional technique to examine if one method is superior to the other.

Status
Terminated
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12617001238369
Acronym
Snap - the NHTP
Enrollment
119
Registered
2017-08-24
Start date
2015-02-02
Completion date
2016-06-03
Last updated
2017-08-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Tooth decay is a really common problem. For years decayed teeth have been fixed by drilling out the decay and then placing fillings. We know that in children’s teeth, fillings don’t last for as long as they do in adults, and that this often means fillings are done again and again in the same tooth. The Hall Technique is a new way of treating decayed children’s primary molar (back) teeth. In the Hall Technique, a stainless steel crown (SSC) is glued on over the decayed tooth without injections or drilling. This seals in the decay and stops it from getting worse, and the stainless steel crown lasts for longer than any other type of filling, so retreatment is less likely to be needed. This study will measure the success of Hall Technique, and children's acceptance of the treatment, compared to the treatment with conventional SSCs for children who attend the Northland District Health Board Community Oral Health Service dental clinics.

Interventions

The Hall Technique is a method of managing dental caries in primary molar teeth by cementing a preformed stainless steel crown onto a tooth. This is without carious tissue removal and without local anaesthesia and takes approximately 10 minutes. Children will receive the Hall Technique treatment on one visit, and the conventional technique on a separate visit. The order of treatment (which comes first) and the tooth to receive the Hall technique will be randomised. The dental therapist will cond

The Hall Technique is a method of managing dental caries in primary molar teeth by cementing a preformed stainless steel crown onto a tooth. This is without carious tissue removal and without local anaesthesia and takes approximately 10 minutes. Children will receive the Hall Technique treatment on one visit, and the conventional technique on a separate visit. The order of treatment (which comes first) and the tooth to receive the Hall technique will be randomised. The dental therapist will conduct the treatment, and the interval between appointments will be a minimum of 1 week, and maximum of 1 month.

Sponsors

University of Otago
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Other
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
4 Years to 8 Years
Healthy volunteers
No

Inclusion criteria

Consenting children and their parents/caregivers. Children aged 4-8years, free from complicating medical history, with 2 or more surface caries in primary molar tooth or teeth requiring treatment.

Exclusion criteria

Child unable to be examined due to inability to comply, no caries or only single surface caries, complicating medical history, outside age range.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026