CompletedNot Applicable

Short-term Stability of Tooth-borne vs Bone-borne Maxillary Expansion: A Parallel Cohort Study

Italy26 participantsStarted 2023-03-01

Plain-language summary

This prospective parallel cohort study aimed to compare the short-term stability of maxillary expansion achieved with tooth-borne (Hyrax) and bone-borne expanders. A total of 36 patients (mean age: 12.3 ± 0.6 years) with transverse maxillary deficiency (≥8 mm) were randomly assigned to two groups: Group A (tooth-borne Hyrax) and Group B (bone-borne expander with four mini-screws). Both groups followed the same activation protocol and underwent an 8-month retention period. After this period, the expansion devices were removed, and relapse was assessed at 12 months post-expansion (T2), corresponding to 4 months after device removal. Digital dental models were analyzed using linear measurements, and statistical analysis was conducted using t-tests (p ≤ 0.05).

Who can participate

SexALL

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Inclusion Criteria: * Caucasian children in late mixed dentition or permanent dentition, * unilateral or bilateral transverse maxillary deficiency of at least 8 mm, * no patients with skeletal Class III and/or open bite, * no previous orthodontic treatment, * good oral hygiene, * good quality of the plaster models to allow a suitable scanning. Exclusion Criteria: * systemic syndrome involved

What they're measuring

stability

Timeframe: up to 14 months

Trial details

NCT IDNCT06916299

SponsorUniversity of Roma La Sapienza

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2023-10-01

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