Permanent MolarsHTCC-SMNCT07186673
Hall Technique vs Conventional Crown Restoration in Permanent Molars: Split-Mouth Trial in Children
A study testing Stainless steel crown placement using Hall Technique and Stainless steel crown placement using conventional method in people with Permanent Molars and Dental Caries, run by Latakia University at 2 sites in Syria.
Trial summary
The aim of this study is to compare the clinical and radiographic success of stainless steel crowns placed using the Hall Technique versus the conventional method in the restoration of permanent first molars in children, and to evaluate their effects on occlusal relationships, crown adaptation, and patient… Read more about this study
- Who is it for?
- Ages 8 to 15 years
- Conditions the study is for
- Permanent Molars, Dental Caries, Tooth Decay
- What is being tested?
- Stainless steel crown placement using Hall Technique and Stainless steel crown placement using conventional method
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 10 participants
- Where
- 2 sitesSyria
- Study dates
- 1 Dec 2025to 15 Aug 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 8 to 15 years
- All sexes
- No healthy volunteers
- Child
Who may be able to join
- No signs or symptoms of irreversible pulpitis
- Molars with carious lesions affecting two or more surfaces
- Permanent first molars with developmental defects
- First molars with an intact dentin layer visible radiographically
- No signs of internal or external resorption
- No evidence of periradicular bone resorption
Who cannot join
- Patients with known nickel allergy
- Severely damaged molars not restorable with preformed crowns
- First molars without opposing teeth
- Pulp exposure during caries excavation
Trial locations and contacts
2 sites in 1 country.
Syria2 sites
Faculty of Dentistry, Latakia University
Latakia
Faculty of Dentistry, Tishreen University
Latakia
About this study
Official title: The Effectiveness of Using the Hall Technique in Restoring First Permanent Molars
The aim of this study is to compare the clinical and radiographic success of stainless steel crowns placed using the Hall Technique versus the conventional method in the restoration of permanent first molars in children, and to evaluate their effects on occlusal relationships, crown adaptation, and patient satisfaction.
Study Outcomes The primary outcome of this study was to evaluate the clinical and radiographic success of stainless steel crowns placed on permanent first molars using the Hall Technique in comparison to the conventional crown placement method. The secondary outcomes included assessment of the marginal fit and adaptation of preformed crowns using both techniques, analysis of changes in occlusal relationships-specifically the vertical dimension of occlusion and overbite-and evaluation of patient satisfaction. Patient satisfaction was measured using a five-point Likert scale at multiple time points: immediately post-treatment, and at one, three, and six months.
Read the detailed description
Detailed Description of the Study
This clinical study is designed to evaluate and compare the clinical and radiographic effectiveness of the Hall Technique and the conventional crown placement method for restoring permanent first molars in children using a split-mouth design. The study will be conducted at the Department of Pediatric Dentistry, Faculty of Dentistry, Tishreen University.
A total of 10 pediatric patients will be recruited according to specific inclusion and exclusion criteria. Each child will present with at least two eligible permanent first molars requiring full coronal restoration with stainless steel crowns. In the split-mouth design, each child will serve as their own control: one molar will be treated using the Hall Technique (HT), and the contralateral molar will be restored using the conventional method. The allocation of which technique will be applied to which side will be randomized for each patient to minimize bias.
Inclusion criteria will include:
- Permanent first molars with carious lesions affecting two or more surfaces or presenting Molar Incisor Hypomineralization (MIH).
- Absence of clinical signs or symptoms of irreversible pulpitis.
- Radiographic confirmation of an intact dentin layer and absence of internal or external root resorption or periapical pathology.
Exclusion criteria will include:
- Known allergy to nickel.
- Severely broken-down molars not suitable for SSC placement.
- Missing opposing teeth.
- Pulpal exposure during treatment.
In the HT group, stainless steel crowns will be placed without local anesthesia, without caries removal, and without any tooth preparation. Orthodontic separators will be placed if necessary during the first visit, and crown cementation will be performed using glass ionomer cement (GIC) during the follow-up visit.
In the conventional group, local anesthesia will be administered, and standard tooth preparation will be carried out (occlusal and proximal reduction), followed by fitting and cementation of the stainless steel crown using GIC.
Clinical and radiographic evaluations will be conducted at multiple time points: at baseline, 1 week, 1 month, 3 months, and 6 months post-treatment. These evaluations will aim to assess the success of the restoration based on crown integrity, presence of clinical symptoms, and radiographic signs of pulpal or periapical pathology.
Patient satisfaction will be measured using a five-point Likert scale, recorded immediately after treatment and again at 1 month, 3 months, and 6 months.
The primary outcome of the study will be the clinical and radiographic success of the restorations.
The secondary outcomes will include assessment of marginal fit and crown adaptation, changes in occlusal relationships (overbite), and patient satisfaction.
- Being tested
- Stainless steel crown placement using Hall Technique, Stainless steel crown placement using conventional method
- Keywords
- Hall Technique, Stainless Steel Crowns, Permanent First Molars, Dental Caries
- Medical subject headings
- Dental Caries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Stainless steel crown placement using Hall TechniqueDevice
Preformed stainless steel crowns are placed on permanent first molars without local anesthesia, caries removal, or tooth preparation. Orthodontic separators are used as needed, and crowns are cemented with glass ionomer cement
Stainless steel crown placement using conventional methodDevice
Preformed stainless steel crowns are placed after administering local anesthesia and performing standard tooth preparation, including occlusal and proximal reduction. Crowns are cemented with glass ionomer cement.
| Study group | Role | What they receive |
|---|---|---|
| Hall Technique | Experimental | Permanent first molars are restored using the Hall Technique. No local anesthesia, caries removal, or tooth preparation is performed. Orthodontic separators are placed if needed, followed by stainless steel crown (SSC) cementation using glass ionomer cement. Receives: Device: Stainless steel crown placement using Hall Technique |
| Conventional Crown Preparation | Active comparator | Permanent first molars are restored using the conventional method. Local anesthesia is administered, and the tooth is prepared with occlusal and proximal reduction before placement and cementation of a stainless steel crown using glass ionomer cement. Receives: Device: Stainless steel crown placement using conventional method |
What is being measured
The primary outcome is the main question the study is designed to answer.
Clinical and Radiographic Success
Clinical and Radiographic Success Definition: Absence of clinical symptoms (pain, swelling, mobility) and absence of radiographic signs of pathology (periapical radiolucency, internal/external resorption).
Measured: Baseline, 1 month, 3 months, and 6 months
Secondary outcomes (1)
- Marginal Fit and Adaptation - Changes in Occlusion ( Overbite) - Patient Satisfaction (Likert Scale)
Secondary Outcome Measures
Marginal Fit and Adaptation of Crown Definition: Clinical assessment of marginal adaptation (good, acceptable, poor).
Time Frame: Post-treatment, 1 month, 3 months, and 6 months
Changes in Occlusion (Overbite) Definition: Measurement of changes in vertical dimension of occlusion and overbite using clinical examination.
Time Frame: Post-treatment, 1 month, 3 months, and 6 months
Patient Satisfaction (Five-Point Likert Scale) Definition: Patient-reported satisfaction using a 5-point Likert scale (1 = very dissatisfied, 5 = very satisfied). Higher scores indicate greater satisfaction.
Time Frame: Immediately post-treatment, 1 month, 3 months, and 6 months
Measured: Time Frame: Immediately post-treatment, 1 month, 3 months, and 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Sep 2025
- Study start1 Dec 2025
- Primary completion1 Aug 2026
- Study completion15 Aug 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Permanent MolarsStudies 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
- Model Description: This is a randomized, controlled, split-mouth clinical trial in which each participant receives both interventions: the Hall Technique and the conventional crown preparation method. Each technique is applied to a different permanent first molar within the same child, allowing for direct within-subject comparison. Treatment allocation to the left or right molar is randomized. This design minimizes inter-individual variability and enhances the reliability of outcome comparisons.
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 10 participants (actual)
Sponsor and investigators
- Lead sponsor
- Latakia University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Nabih Raslan, Study chair, Latakia University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07186673
- Sponsor's protocol ID
- Hall T in Permanent Molars
- Acronym
- HTCC-SM
- Status last verified
- Sep 2026
- First submitted
- 7 Sep 2025
- Last updated
- 15 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: The decision regarding IPD sharing has not been finalized. Will follow institutional and regulatory guidelines.
Study at a glance
From the registry record, last updated by the sponsor on 15 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effectiveness of Using the Hall Technique in Restoring First Permanent Molars
- ClinicalTrials.gov ID
- NCT07186673
- Acronym / sponsor ID
- HTCC-SM / Hall T in Permanent Molars
- Keywords
- Hall Technique, Stainless Steel Crowns, Permanent First Molars, Dental Caries
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 10 participants (actual)
- Lead sponsor
- Latakia UniversityUniversity, hospital or other
- Study start
- 1 Dec 2025 (actual)
- Primary completion
- 1 Aug 2026 (actual)
- Study completion
- 15 Aug 2026 (actual)
- First posted
- 22 Sep 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 aim of this study is to compare the clinical and radiographic success of stainless steel crowns placed using the Hall Technique versus the conventional method in the restoration of permanent first molars in children, and to evaluate their effects on occlusal relationships, crown adaptation, and patient satisfaction.
Study Outcomes The primary outcome of this study was to evaluate the clinical and radiographic success of stainless steel crowns placed on permanent first molars using the Hall Technique in comparison to the conventional crown placement method. The secondary outcomes included assessment of the marginal fit and adaptation of preformed crowns using both techniques, analysis of changes in occlusal relationships-specifically the vertical dimension of occlusion and overbite-and evaluation of patient satisfaction. Patient satisfaction was measured using a five-point Likert scale at multiple time points: immediately post-treatment, and at one, three, and six months.
Detailed description
Detailed Description of the Study
This clinical study is designed to evaluate and compare the clinical and radiographic effectiveness of the Hall Technique and the conventional crown placement method for restoring permanent first molars in children using a split-mouth design. The study will be conducted at the Department of Pediatric Dentistry, Faculty of Dentistry, Tishreen University.
A total of 10 pediatric patients will be recruited according to specific inclusion and exclusion criteria. Each child will present with at least two eligible permanent first molars requiring full coronal restoration with stainless steel crowns. In the split-mouth design, each child will serve as their own control: one molar will be treated using the Hall Technique (HT), and the contralateral molar will be restored using the conventional method. The allocation of which technique will be applied to which side will be randomized for each patient to minimize bias.
Inclusion criteria will include:
- Permanent first molars with carious lesions affecting two or more surfaces or presenting Molar Incisor Hypomineralization (MIH).
- Absence of clinical signs or symptoms of irreversible pulpitis.
- Radiographic confirmation of an intact dentin layer and absence of internal or external root resorption or periapical pathology.
Exclusion criteria will include:
- Known allergy to nickel.
- Severely broken-down molars not suitable for SSC placement.
- Missing opposing teeth.
- Pulpal exposure during treatment.
In the HT group, stainless steel crowns will be placed without local anesthesia, without caries removal, and without any tooth preparation. Orthodontic separators will be placed if necessary during the first visit, and crown cementation will be performed using glass ionomer cement (GIC) during the follow-up visit.
In the conventional group, local anesthesia will be administered, and standard tooth preparation will be carried out (occlusal and proximal reduction), followed by fitting and cementation of the stainless steel crown using GIC.
Clinical and radiographic evaluations will be conducted at multiple time points: at baseline, 1 week, 1 month, 3 months, and 6 months post-treatment. These evaluations will aim to assess the success of the restoration based on crown integrity, presence of clinical symptoms, and radiographic signs of pulpal or periapical pathology.
Patient satisfaction will be measured using a five-point Likert scale, recorded immediately after treatment and again at 1 month, 3 months, and 6 months.
The primary outcome of the study will be the clinical and radiographic success of the restorations.
The secondary outcomes will include assessment of marginal fit and crown adaptation, changes in occlusal relationships (overbite), and patient satisfaction.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
- Model description
- Model Description: This is a randomized, controlled, split-mouth clinical trial in which each participant receives both interventions: the Hall Technique and the conventional crown preparation method. Each technique is applied to a different permanent first molar within the same child, allowing for direct within-subject comparison. Treatment allocation to the left or right molar is randomized. This design minimizes inter-individual variability and enhances the reliability of outcome comparisons.
| Arm | Type | Receives |
|---|---|---|
| Hall Technique | Experimental | Device: Stainless steel crown placement using Hall TechniquePermanent first molars are restored using the Hall Technique. No local anesthesia, caries removal, or tooth preparation is performed. Orthodontic separators are placed if needed, followed by stainless steel crown (SSC) cementation using glass ionomer cement. |
| Conventional Crown Preparation | Active comparator | Device: Stainless steel crown placement using conventional methodPermanent first molars are restored using the conventional method. Local anesthesia is administered, and the tooth is prepared with occlusal and proximal reduction before placement and cementation of a stainless steel crown using glass ionomer cement. |
Who may qualify
- Ages
- 8 to 15 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
Key inclusion criteria (6 listed)
- No signs or symptoms of irreversible pulpitis
- Molars with carious lesions affecting two or more surfaces
- Permanent first molars with developmental defects
- First molars with an intact dentin layer visible radiographically
- No signs of internal or external resorption
Key exclusion criteria (4 listed)
- Patients with known nickel allergy
- Severely damaged molars not restorable with preformed crowns
- First molars without opposing teeth
- Pulp exposure during caries excavation
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 |
|---|---|---|
| Stainless steel crown placement using Hall TechniquePreformed stainless steel crowns are placed on permanent first molars without local anesthesia, caries removal, or tooth preparation. Orthodontic separators are used as needed, and crowns are cemented with glass ionomer cement | Device | Hall Technique |
| Stainless steel crown placement using conventional methodPreformed stainless steel crowns are placed after administering local anesthesia and performing standard tooth preparation, including occlusal and proximal reduction. Crowns are cemented with glass ionomer cement. | Device | Conventional Crown Preparation |
Primary outcome
Clinical and Radiographic Success
Time frame: Baseline, 1 month, 3 months, and 6 months
Clinical and Radiographic Success Definition: Absence of clinical symptoms (pain, swelling, mobility) and absence of radiographic signs of pathology (periapical radiolucency, internal/external resorption).
1 secondary outcome
- Marginal Fit and Adaptation - Changes in Occlusion ( Overbite) - Patient Satisfaction (Likert Scale)
Time frame: Time Frame: Immediately post-treatment, 1 month, 3 months, and 6 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Sep 2026.
- Individual participant dataSharing planned: No. The decision regarding IPD sharing has not been finalized. Will follow institutional and regulatory guidelines.
Related trials for Permanent Molars
Not yet recruiting
Clinical Performance of Glass Hybrid and Alkasite Restorative Systems in MIH-Affected Permanent First Molars
Molar-Incisor Hypomineralization (MIH)
Recruiting
Nanohydroxyapatite Versus Sodium Fluoride Varnish in Remineralizing MIH Anterior Teeth
Fluoride Varnishes, Molar Incisor Hypomineralisation
Recruiting
Clinical and Radiographic Evaluation of Dia-Root Bio MTA for Indirect Pulp Capping in Young Permanent Molars
MTA, Pulp Caping
Not yet recruitingObservational study
Hidden Complexities of the Palatal Canal in Maxillary Permanent Molars
Evaluate the Anatomical Variations of the Palatal Canal in Maxillary Permanent Molars Using CBCT
Recruiting
Postoperative Pain and Substance P Levels After Bioceramic vs Calcium Hydroxide Intracanal Medicaments in Symptomatic Apical Periodontitis
Symptomatic Apical Periodontitis
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. This study is not recruiting at the moment.
Nabih Raslan study chair
Latakia University
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Stainless steel crown placement using Hall Technique and Stainless steel crown placement using conventional method in people with Permanent Molars and Dental Caries, run by Latakia University at 2 sites in Syria.
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 4 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: finished, as of the sponsor's last update on 15 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Syria. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Clinical and Radiographic Success (time frame: Baseline, 1 month, 3 months, and 6 months). 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 15 Sep 2026.