Efficacy of Digital Versus Conventional Nance and Transpalatal Arch Appliances for Space Maintenance (TPA)

Pharos University in Alexandria

Status: Active, not recruiting

Conditions: Space Maintenance

Treatments: Device: conventional nance appliance; Device: digital TPA appliance; Device: digital fabricated nance appliance; Device: conventional TPA appliance

Study type: Interventional

Funder types: Other

Identifiers

NCT07593378

407-02/09/2025

Details and patient eligibility

About

To compare the effect of digital fabricated Nance and transpalatal arch appliances versus conventional fabricated Nance and transpalatal arch appliances.

Full description

measuring arch parameters: arch perimeter, anterior segment perimeter, maxillary width, anterior segment length, right molar rotation angle, left molar rotation angle, palatal vault depth

Enrollment: 115 estimated patients

Sex: All

Ages: 8 to 9 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Healthy children aged 8-9 years
• Bilateral, prematurely extracted maxillary primary molars within a period not more than one month were selected.
• Fully erupted maxillary permanent first molars.
• Angle's class I occlusion.
• Adequate space for premolar eruption according to Moyer's arch length analysis.

Exclusion criteria

• Children with congenitally absent permanent successors.
• Children with successors not covered by bone.
• Children with successors with two-thirds or more of their roots formed.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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115 participants in 4 patient groups

digital Nance appliance

Active Comparator group

Description:

digital Nance appliance

Treatment:

Device: digital fabricated nance appliance

digital TPA appliance

Active Comparator group

Description:

digital TPA appliance

Treatment:

Device: digital TPA appliance

conventional nance appliance

Other group

Description:

conventional nance appliance

Treatment:

Device: conventional nance appliance

conventional TPA appliance

Other group

Description:

conventional TPA appliance

Treatment:

Device: conventional TPA appliance