Maxillary Deficiency Clinical Trial
— LEAFOfficial title:
Leaf Expander Versus Hyrax Expander. A Multicenter, Prospective, Randomized Trial
The aim of the current study was to evaluate maxillary and mandibular arch widths' response to five different appliances and clinical protocols (Rapid maxillary expander RME, Leaf Expander 450g, Leaf Expander 900g, Self-expander 450g, Self-expander 900g) for the correction of the maxillary deficiency.
Status | Not yet recruiting |
Enrollment | 200 |
Est. completion date | November 1, 2023 |
Est. primary completion date | December 1, 2022 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 5 Years to 12 Years |
Eligibility | Inclusion Criteria: - prepubertal phase of development (cervical stage CS1 or 2 in cervical vertebral maturation or corresponding stage of third Finger middle phalanx maturation index). - early or intermediate mixed dentition stage with fully erupted upper and lower first permanent molars. - presence of the second upper deciduous molars available as an anchoring tooth. The second deciduous molar was considered available as anchoring tooth when the root had the same length as the clinical crown at the radiographic examination (Quinzi V, Federici Canova F, Rizzo FA, Marzo G, Rosa M, Primozic J. Factors related to maxillary expander loss due to anchoring deciduous molars exfoliation during treatment in the mixed dentition phase. Eur J Orthod. 2021 Jun 8;43(3):332-337. doi: 10.1093/ejo/cjaa061) - Posterior transverse interarch discrepancy (PTID) of at least 3 mm. PTID was calculated on dental casts with a caliper as the difference between the maxillary intermolar width (distance between the central fossae of right and left permanent first maxillary molars) and the mandibular intermolar width (distance between the tips of the distobuccal cusps of right and left permanent first mandibular molars) (Tollaro, I., Baccetti, T., Franchi, L. and Tanasescu, C.D. 1996 Role of posterior transverse interarch discrepancy in Class II, Division 1 malocclusion during the mixed dentition phase. AJODO, 110, 417-422). Exclusion Criteria: - age older than 12 years, - pubertal or postpubertal stage of development (CS 3-6), - late deciduous or late mixed dentition, 4. agenesis of upper second premolars (assessed on initial panoramic radiograph), - Class III malocclusion, - cleft lip and/or palate and craniofacial syndromes |
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
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University of Genova | Università degli Studi di Brescia, University of Milan |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Crossbite and/or traversal maxillary deficiency correction | Crossbite and/or traversal maxillary deficiency correction | 6 months | |
Secondary | Crossbite correction stability | Crossbite correction stability | 1 year | |
Secondary | Crossbite correction stability | Crossbite correction stability | 2 years | |
Secondary | Canine and molar expansion (upper and lower arch) | Canine and molar millimetres of expansion (upper and lower arch) | 6 months | |
Secondary | Canine and molar angulation (upper and lower arch) | Canine and molar degrees of angulation (upper and lower arch) | 6 months | |
Secondary | Canine and molar expansion (upper and lower arch) | Canine and molar millimetres of expansion (upper and lower arch) | 1 year | |
Secondary | Canine and molar angulation (upper and lower arch) | Canine and molar degrees of angulation (upper and lower arch) | 1 year | |
Secondary | Upper and lower dental arch perimeter modifications | Upper and lower dental arch perimeter modifications (millimetres) | 6 months | |
Secondary | Upper and lower dental arch perimeter modifications | Upper and lower dental arch perimeter modifications (millimetres) | 1 year | |
Secondary | Pain during active expansion phase (VAS scale) | Pain during active expansion phase (VAS scale) | 1 month | |
Secondary | Appliance breakages and detachments | Appliance breakages and detachments | 6 months | |
Secondary | Number of in-office appointments | Number of in-office appointments | 6 months | |
Secondary | Time needed to correct the malocclusion | Time needed to correct the malocclusion | 6 months |
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