An observational study in Ankyloglossia, sponsored by Hanoi Medical University. Completed at 1 site in Vietnam. Open to participants aged 4 Years to 33 Years. Per ClinicalTrials.gov, last updated 2026-09-24.
Sponsored by Hanoi Medical University · Observational
This observational study evaluated changes in tongue mobility among patients with ankyloglossia who underwent frenectomy as part of routine clinical care. The decision to perform frenectomy, including the indication and surgical technique, was made by the treating clinician independently of study participation. The study did not assign any treatment. Tongue mobility measurements obtained before treatment and during routine postoperative follow-up were analyzed.
This was a prospective observational cohort study of patients with ankyloglossia receiving routine clinical care at Hanoi National Hospital of Odonto-Stomatology and Hanoi Medical University.
Clinical decisions regarding whether frenectomy was indicated, the timing of treatment, and the surgical technique were made by the treating clinicians according to routine clinical practice and independently of enrollment in this study. Participation in the study did not determine or modify the treatment received.
Patients who underwent frenectomy as part of routine clinical care were observed before treatment and during routine postoperative follow-up. Tongue mobility was assessed using the Quick Tongue-Tie (QTT) Assessment Tool, including the Kotlow index, Tongue-Incisive Papilla distance, and Lingual-Palatal Suction measurement.
The objective of the study was to describe changes in tongue mobility following routinely provided frenectomy. No therapeutic intervention was prospectively assigned by the investigators for research purposes.
32 studies on the registry are indexed under Ankyloglossia; 8 are open to participants now.
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Patients at Hanoi National Hospital of Odonto-stomatology and Hanoi Medical University from December 2022 to December 2024
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Exclusion Criteria:
Frenectomy was performed as part of routine clinical care for patients with ankyloglossia who had a clinical indication for treatment. The decision to perform the procedure, its timing, and the surgical technique were determined by the treating clinician independently of study participation. The study investigators did not assign participants to frenectomy or to a specific surgical technique.
Kotlow index
The Kotlow index measures the distance point of attachment of the frenum on the ventral surface of the tongue and the tip of the tongue. This outcome measure will be assessed in millimeters (mm) using the Quick Tongue-Tie (QTT) Assessment Tool.
Time frame: 3 months
Tongue-Incisive Papilla Distance
Tongue-Incisive Papilla (TIP) Distance is the distance between Tongue and Incisive Papilla. Ask the patient to open their mouth and simultaneously keep tongue tip touching the upper central papilla, the distance between upper and lower right central incisors is defined as TIP. This outcome measure will be assessed in millimeters (mm) using the Quick Tongue-Tie (QTT) Assessment Tool.
Time frame: 3 months
Comfortable Mouth Opening
Comfortable Mouth Opening (CMO) is the optimal jaw position during relaxed oral function, measured as the distance between the upper and lower teeth when the patient siting in upright posture, being relax and looking straight forward, and the mouth is naturally open. This outcome measure will be assessed in millimeters (mm) using the Quick Tongue-Tie (QTT) Assessment Tool.
Time frame: 3 months
Lingual - Palatal Suction
Lingual - Palatal Suction (LPS) is the distance between the upper and lower right central incisors when opening while the tongue is elevated to touch the hard palate. This outcome measure will be assessed in millimeters (mm) using the Quick Tongue-Tie (QTT) Assessment Tool.
Time frame: 3 months
Plan to share: Yes
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Ran from Dec 2022 to primary completion in Dec 2024, 24 months.
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This study is completed, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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Hanoi Medical University