Occlusal Changes After Modified Hall Technique in Molars Affected by Molar-Incisor Hypomineraliza… (NCT07530835) | Clinical Trial Compass
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Occlusal Changes After Modified Hall Technique in Molars Affected by Molar-Incisor Hypomineralization
Turkey (Türkiye)46 participantsStarted 2026-06-01
Plain-language summary
Molar-incisor hypomineralization (MIH) frequently affects permanent first molars and increases the risk of rapid post-eruptive breakdown and restorative failure. Stainless steel crowns (SSCs) are considered a reliable treatment option for severely affected molars; however, SSC placement may temporarily alter the occlusal vertical dimension and occlusal contacts. Quantitative evidence describing the occlusal adaptation process following SSC placement in MIH-affected permanent molars is limited.
This prospective longitudinal clinical study aims to evaluate occlusal adaptation after SSC placement using the modified Hall technique in MIH-affected permanent first molars. Forty-six children will be included. Intraoral scans will be obtained at baseline, immediately after treatment, and during follow-up visits up to 3 months. Digital models will be superimposed to measure three-dimensional changes in cusp position, occluso-vertical dimension, and occlusal contact area. Temporomandibular joint function and periodontal parameters will also be assessed. The results are expected to provide quantitative evidence on occlusal adaptation following SSC treatment in MIH-affected molars.
Who can participate
Age range
6 Years – 14 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria for Participants
* Absence of any skeletal anomalies
* ASA physical status I or II according to the American Society of Anesthesiologists classification
* Frankl behavior rating score of 3 or 4
* All permanent first molars erupted and in contact at maximum intercuspation
* Emergency dental needs (e.g., toothache or acute conditions) previously managed
* Presence of at least one permanent first molar with an MIH-TNI score of 2 or 4 requiring SSC restoration
* No pain, clicking, or functional limitation in the temporomandibular joint region
* Children and their legal guardians who read, understand, and provide written and verbal informed consent Inclusion Criteria for Tooth
* Permanent first molars with MIH Treatment Need Index (MIH-TNI) score of 2 or 4 indicating the need for SSC restoration
* Occlusal contact with the opposing tooth maintained at maximum intercuspation despite post-eruptive enamel breakdown, with a noticeable reduction in posterior occluso-vertical dimension
* Absence of clinical and radiographic signs or symptoms associated with irreversible pulp inflammation or necrosis
* Absence of gingival or periodontal pathology in the surrounding soft tissues
Exclusion Criteria
* Individuals with serious systemic or psychological conditions
* Participants who fail to attend follow-up appointments
* Those who exhibit excessive fear or anxiety reactions and are unable to cooperate during treatment
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Cusp Tip Displacement (Linear Measurement in mm)
Timeframe: From crown placement to 3 months post-placement
2
Anterior Vertical Distance (Linear Measurement in mm)
Timeframe: From crown placement to 3 months post-placement
3
Posterior Vertical Distance (Linear Measurement in mm)
Timeframe: From crown placement to 3 months post-placement