Dental CariesNCT07100028
Hall Technique vs Conventional Technique in Permanent Teeth
A study testing SSC crown with Hall technique and SSC with conventional technique in people with Dental Caries and Crowned Posterior Teeth, run by Hacettepe University at 1 site in Turkey (Türkiye).
Trial summary
The purpose of this study is to evaluate and compare the clinical and radiological performance of stainless steel crowns using conventional and Hall technique on permanent molars Read more about this study
- Who is it for?
- Ages 6 to 13 yearsHealthy volunteers can take part
- Conditions the study is for
- Dental Caries, Crowned Posterior Teeth
- What is being tested?
- SSC crown with Hall technique and SSC with conventional technique
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 96 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 7 Sep 2025to 30 Jun 2028
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 6 to 13 years
- All sexes
- Healthy volunteers accepted
- Child
Who may be able to join
- The child volunteers and their parents who read and agreed to the informed consent form.
- The presence of excessive loss of material or extensive enamel defects in at least two permanent molars that require crown application.
- The presence of antagonist teeth of the teeth to be crowned.
- All treatments on the patient's other teeth have been completed.
- The patient who does not have temporomandibular joint (TMJ) problems.
- Children who have cooperation to allow the dental procedure to be completed.
Who cannot join
- Child volunteers or parents who refuse to participate in the study.
- The patient who has a chronic disease.
- Patients undergoing orthodontic treatment
- The patient has missing teeth on the treated side.
- The need for vital or non-vital pulp treatment of the tooth.
- The child volunteers and their parents did not accept the aesthetic appearance of the stainless steel crown.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
sule sahin, research assistant contact
Turkey (Türkiye)1 site
Hacettepe university, pediatric dentistry
Ankara, Altindag, 06100
gizem erbas unverdi, assoc.prof., erbasgizem@gmail.com
sule sahin
About this study
Official title: Comparison of Hall Technique vs Conventional Technique in Permanent Teeth
The purpose of this study is to evaluate and compare the clinical and radiological performance of stainless steel crowns using conventional and Hall technique on permanent molars
Read the detailed description
Stainless Steel Crowns will be applied on two permanent molar teeth in a split mouth design. 96 patients will be included in the study. The teeth will be randomized into two groups according to the applying methods: 1) Traditional method 2) Hall technique.
Oral hygiene index (Green \& Vermillion), Plaque index (Sillness \& Löe), gingival health (Löe \& Sillness), level of gingival margin, crown retention and success, wear, occlusion, clinical pulpal health (spontaneous pain, mucosal swelling/fistula presence, mobility, percussion/palpation tenderness) and radiographic pulpal health (periradicular/interradicular radiolucency, lamina dura loss, internal/external root resorption, pulp canal obliteration) will be evaluated and photographic records will be taken.
The evaluation of the restorations will be performed at baseline, and 1., 3., 6., 12., 18., 24. months. The measurement of vertical hight on occlusion will be performed before and immediate after the treatment, at 2 weeks and 1., 2. and 3.months.
Fisher's Exact test, Kaplan-Meier Survival Curves, Log-rank test, Mann Whitney U test, and Friedman test will be performed for the statistical analysis.
- Conditions
- Dental Caries, Crowned Posterior Teeth
- Being tested
- SSC crown with Hall technique, SSC with conventional technique
- Keywords
- hall technique, permanent teeth, crown
- Medical subject headings
- Dental Caries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SSC crown with Hall techniqueOther
SSC crown placement using Hall technique
SSC with conventional techniqueOther
SSC placement using conventional technique
| Study group | Role | What they receive |
|---|---|---|
| SSC crown with conventional technique | Active comparator | SSC crown placement using conventional technique Receives: Other: SSC crown with Hall technique |
| SSC crown with Hall technique | Experimental | SSC crown placement using Hall technique Receives: Other: SSC with conventional technique |
What is being measured
The primary outcome is the main question the study is designed to answer.
Clinical and radiological performance of SSCs placed with Hall of conventional technique
The primary outcome 'success' was defined as the "absence of major failure," a measure encompassing clinical and radiographic signs of irreversible pulpitis or infectious complications (spontaneous pain, pulp infection, or periradicular pathology, loss of lamina dura on radiographs).
Measured: 2 years
Secondary outcomes (1)
Clinical measurements of SSCs placed with Hall of conventional technique
- Plaque index (Sillness \& Löe index), gingival health (Löe \& Sillness index) scores will be measured.
- Treatment longevity, will be measured as the time interval between the groups and the final follow-up date.
- Retention of the SSC, defined as the presence or absence of SSC.
- Normalisation time of the vertical height of the occlusion in Hall technique group.
Measured: 2 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Aug 2025
- Study start7 Sep 2025 (estimated)
- Primary completion30 Dec 2027 (estimated)
- Study completion30 Jun 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Dental CariesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- Two technique on two molars in one patient
- Masking
- None (open label)
- Enrolment
- 96 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Hacettepe University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, GIZEM ERBAS UNVERDI, Hacettepe University
- Investigators
- zafer cavit cehreli, prof.dr., Study chair
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07100028
- Sponsor's protocol ID
- Hall technique-permanent
- Status last verified
- Jul 2025
- First submitted
- 25 Jun 2025
- Last updated
- 1 Aug 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: IPD is available from the corresponding author on reasonable request
Study at a glance
From the registry record, last updated by the sponsor on 1 Aug 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of Hall Technique vs Conventional Technique in Permanent Teeth
- ClinicalTrials.gov ID
- NCT07100028
- Acronym / sponsor ID
- Hall technique-permanent
- Conditions
- Dental Caries, Crowned Posterior Teeth
- Keywords
- hall technique, permanent teeth, crown
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 96 participants (estimated)
- Lead sponsor
- Hacettepe UniversityUniversity, hospital or other
- Study start
- 7 Sep 2025 (estimated)
- Primary completion
- 30 Dec 2027 (estimated)
- Study completion
- 30 Jun 2028 (estimated)
- First posted
- 1 Aug 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to evaluate and compare the clinical and radiological performance of stainless steel crowns using conventional and Hall technique on permanent molars
Detailed description
Stainless Steel Crowns will be applied on two permanent molar teeth in a split mouth design. 96 patients will be included in the study. The teeth will be randomized into two groups according to the applying methods: 1) Traditional method 2) Hall technique.
Oral hygiene index (Green \& Vermillion), Plaque index (Sillness \& Löe), gingival health (Löe \& Sillness), level of gingival margin, crown retention and success, wear, occlusion, clinical pulpal health (spontaneous pain, mucosal swelling/fistula presence, mobility, percussion/palpation tenderness) and radiographic pulpal health (periradicular/interradicular radiolucency, lamina dura loss, internal/external root resorption, pulp canal obliteration) will be evaluated and photographic records will be taken.
The evaluation of the restorations will be performed at baseline, and 1., 3., 6., 12., 18., 24. months. The measurement of vertical hight on occlusion will be performed before and immediate after the treatment, at 2 weeks and 1., 2. and 3.months.
Fisher's Exact test, Kaplan-Meier Survival Curves, Log-rank test, Mann Whitney U test, and Friedman test will be performed for the statistical analysis.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Two technique on two molars in one patient
| Arm | Type | Receives |
|---|---|---|
| SSC crown with conventional technique | Active comparator | Other: SSC crown with Hall techniqueSSC crown placement using conventional technique |
| SSC crown with Hall technique | Experimental | Other: SSC with conventional techniqueSSC crown placement using Hall technique |
Who may qualify
- Ages
- 6 to 13 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (6 listed)
- The child volunteers and their parents who read and agreed to the informed consent form.
- The presence of excessive loss of material or extensive enamel defects in at least two permanent molars that require crown application.
- The presence of antagonist teeth of the teeth to be crowned.
- All treatments on the patient's other teeth have been completed.
- The patient who does not have temporomandibular joint (TMJ) problems.
Key exclusion criteria (6 listed)
- Child volunteers or parents who refuse to participate in the study.
- The patient who has a chronic disease.
- Patients undergoing orthodontic treatment
- The patient has missing teeth on the treated side.
- The need for vital or non-vital pulp treatment of the tooth.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| SSC crown with Hall techniqueSSC crown placement using Hall technique | Other | SSC crown with conventional technique |
| SSC with conventional techniqueSSC placement using conventional technique | Other | SSC crown with Hall technique |
Primary outcome
Clinical and radiological performance of SSCs placed with Hall of conventional technique
Time frame: 2 years
The primary outcome 'success' was defined as the "absence of major failure," a measure encompassing clinical and radiographic signs of irreversible pulpitis or infectious complications (spontaneous pain, pulp infection, or periradicular pathology, loss of lamina dura on radiographs).
1 secondary outcome
Clinical measurements of SSCs placed with Hall of conventional technique
Time frame: 2 years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Aug 2025.
- Individual participant dataSharing planned: Yes. IPD is available from the corresponding author on reasonable request
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
sule sahin, research assistant contact
zafer cavit cehreli, prof.dr. study chair
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing SSC crown with Hall technique and SSC with conventional technique in people with Dental Caries and Crowned Posterior Teeth, run by Hacettepe University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 1 Aug 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact gizem erbas unverdi, Dr. (00905052805736, erbasgizem@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Clinical and radiological performance of SSCs placed with Hall of conventional technique (time frame: 2 years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Aug 2025.