- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03640013
Comparing Hall vs Conventional Technique in Placing Preformed Metal Crowns From Sudan
August 20, 2018 updated by: Fadil Elamin, Khartoum Centre for Research and Medical Training
A Randomized Clinical Trial Comparing Hall vs Conventional Technique in Placing Preformed Metal Crowns From Sudan
Preformed metal crowns (PMCs) have high success rates in restoring primary molars in children but they were not generally used by dentists, especially in developing countries due to its demand of high clinical skills with the conventional technique (CT).
The biological approach, Hall technique (HT), requires less training and can be placed by less experienced dental operators including therapists.
Previous studies were mainly carried out in developed countries.
The aims were to investigate and compare the efficacies and cost-effectiveness of PMCs placed by these two techniques.
Study Overview
Detailed Description
A prospective randomised control trial design was used.
The study was carried out in a dental practice in Sudan, an under-developed country with lower social economic group.
Children between 5-8 years were invited and selected if they met the inclusion criteria.
Only those who had 1-2 carious primary molars needing PMCs were randomised.
The PMCs were placed by a dentist in the CT arm and by a therapist in the HT arm.
The children were follow up every 6 months up to 2 years.
The demographic details, periodontal health, occlusion, children anxieties, and procedure time were recorded.
The Kaplan-Meier survival rates for each arm were calculated.
The incremental cost effectiveness ratio (ICER) was calculated using the results and the local salaries
Study Type
Interventional
Enrollment (Actual)
103
Phase
- Not Applicable
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
3 years to 6 years (Child)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Healthy children with Class I or class II carious primary molars
Exclusion Criteria:
- Had a compromised medical history
- Were pre- or un-cooperative to have clinical examinations
- Lived in remote villages and were unlikely to return for follow-up
- Had teeth with pain or sepsis
- Had teeth with caries extended in pulp either from clinical or radiographic examinations
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Hall Technique
The intervention involves removal from the primary molar and a preformed metal crown is placed using glass ionomer.
The subject is then asked to bite until crown is seated.
No occlusal adjustment is carried out.
|
Hall Technique primary fitted crowns to restore carious primary molars
|
Other: Conventional Technique
The procedure involves administering local anesthetic and the intervention involves remoal of caries from the affected primary molar.
The tooth is then reshaped and contoured to to enable a preformed metal crown placement.
Occlusal and marginal fit is improved by crimping the metal crown to improve fit.
The preformed metal crown is cemented with glass ionomer restorative material and occlusion finally checked.
The subject is then asked to bite on a cotton roll for two minutes until the cement has set.
|
Hall Technique primary fitted crowns to restore carious primary molars
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Survival
Time Frame: 24 months
|
If PMC intact and crown functional or not
|
24 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Gingival helath
Time Frame: 24 months
|
Modified gingival index after Löe et al. (1967); Scale; 0=No disease; 1=hyperplasia with no bleeding; 2= hyperplasia with bleeding
|
24 months
|
Plaque Index
Time Frame: 24 months
|
Plaque accumulation around preformed metal crown after Loe et al (1967); Scale: 0= no plaque, 1= subgingival plaque; 2= supragingival plaque
|
24 months
|
Occlusion
Time Frame: 24 months
|
Natural teeth are in occlusion following PMC placement
|
24 months
|
Anxiety
Time Frame: 12 months
|
Self perceived anxiety using facial image scale after Buchanan and Niven (2002) using 5 facial diagrams ranging from sad to smiley faces: Scale; 1-5; 1=extremely happy to 5=extremely unhappy
|
12 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Study Director: Dr Yousra, PhD, University of Khartoum
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Loe H. The Gingival Index, the Plaque Index and the Retention Index Systems. J Periodontol. 1967 Nov-Dec;38(6):Suppl:610-6. doi: 10.1902/jop.1967.38.6.610. No abstract available.
- Innes NP, Ricketts D, Chong LY, Keightley AJ, Lamont T, Santamaria RM. Preformed crowns for decayed primary molar teeth. Cochrane Database Syst Rev. 2015 Dec 31;2015(12):CD005512. doi: 10.1002/14651858.CD005512.pub3.
- Buchanan H, Niven N. Validation of a Facial Image Scale to assess child dental anxiety. Int J Paediatr Dent. 2002 Jan;12(1):47-52.
- Elamin F, Abdelazeem N, Salah I, Mirghani Y, Wong F. A randomized clinical trial comparing Hall vs conventional technique in placing preformed metal crowns from Sudan. PLoS One. 2019 Jun 3;14(6):e0217740. doi: 10.1371/journal.pone.0217740. eCollection 2019.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
February 1, 2015
Primary Completion (Actual)
May 1, 2018
Study Completion (Actual)
May 1, 2018
Study Registration Dates
First Submitted
August 12, 2018
First Submitted That Met QC Criteria
August 17, 2018
First Posted (Actual)
August 21, 2018
Study Record Updates
Last Update Posted (Actual)
August 22, 2018
Last Update Submitted That Met QC Criteria
August 20, 2018
Last Verified
August 1, 2018
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- KhartoumCentre
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Undecided
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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