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NCT Number: NCT07100028

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

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Key information

Conditions

Dental Caries Crowned Posterior Teeth Stomatognathic Diseases Tooth Demineralization Tooth Diseases

Age range

6 year–13 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Hacettepe university, pediatric dentistry

Ankara, Altindag, 06100, Turkey (Türkiye)

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 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.

Exclusion criteria

  • 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.

Treatment and study plan

SSC crown with Hall technique

Other

SSC crown placement using Hall technique

SSC with conventional technique

Other

SSC placement using conventional technique

Primary outcomes

  1. 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).

Secondary outcomes

  1. Clinical measurements of SSCs placed with Hall of conventional technique

    Time frame: 2 years

    • 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.

Interested in participating?

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Sponsors and collaborators

Lead sponsor

Hacettepe University

Other

Registry information

Official study title

Comparison of Hall Technique vs Conventional Technique in Permanent Teeth

Important dates

Study start
2025
Primary completion
2027
Study completion
2028
First posted
Aug 1, 2025
Registry last updated
Aug 1, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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