Hall Technique vs Conventional Crown Restoration in Permanent Molars: Split-Mouth Trial in Children

NCT07186673 | Not Yet Recruiting

• 1 other identifier: Hall T in Permanent Molars
• Study Type: interventional
• Target: 10
• Locations: 1 country
• Sites: 1

Brief 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 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.

Conditions

Permanent Molars; Dental Caries; Tooth Decay; Permanent First Molar Caries

Keywords

Hall Technique; Stainless Steel Crowns; Permanent First Molars; Dental Caries

Outcome Measures

Primary Outcomes (1)

• 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).

  Baseline, 1 month, 3 months, and 6 months

Secondary Outcomes (1)

• - Marginal Fit and Adaptation - Changes in Occlusion ( Overbite) - Patient Satisfaction (Likert Scale)

  Time Frame: Immediately post-treatment, 1 month, 3 months, and 6 months

Study Arms (2)

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.

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.

Device: Stainless steel crown placement using conventional method

Interventions

Stainless steel crown placement using Hall Technique DEVICE

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

Hall Technique

Stainless steel crown placement using conventional method DEVICE

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.

Conventional Crown Preparation

Eligibility Criteria

• Age: 8 Years - 15 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17)

You may qualify if:

• 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

You may not qualify if:

• Patients with known nickel allergy
• Severely damaged molars not restorable with preformed crowns
• First molars without opposing teeth
• Pulp exposure during caries excavation

Sponsors & Collaborators

• Tishreen University: lead

Study Sites (1)

Faculty of Dentistry, Tishreen University

Latakia, Syria

Location

MeSH Terms

Conditions

Dental Caries

Condition Hierarchy (Ancestors)

Tooth Demineralization; Tooth Diseases; Stomatognathic Diseases

Study Officials

• Nabih Raslan

  Tishreen University

  STUDY CHAIR

Central Study Contacts

Nabih Raslan, Prof

CONTACT

+963999140762; raslan.nabih@tishreen.edu.sy

Ahmad Obaid Alhay

CONTACT

+994311031; Ahmad.alhay@tishreen.edu.sy

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: 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.

Study Record Dates

• First Submitted: September 7, 2025
• First Posted: September 22, 2025
• Study Start: November 1, 2025
• Primary Completion: April 1, 2026
• Study Completion: May 1, 2026
• Last Updated: November 28, 2025

Record last verified: 2025-11

Data Sharing

• IPD Sharing: Will not share

Locations

SY (1)