Efficacy of Digital Versus Conventional Nance and Transpalatal Arch Appliances for Space Maintenance
TPA
1 other identifier
interventional
115
1 country
1
Brief Summary
To compare the effect of digital fabricated Nance and transpalatal arch appliances versus conventional fabricated Nance and transpalatal arch appliances.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Jun 2025
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 2, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
September 2, 2025
CompletedFirst Submitted
Initial submission to the registry
May 8, 2026
CompletedFirst Posted
Study publicly available on registry
May 18, 2026
CompletedStudy Completion
Last participant's last visit for all outcomes
June 2, 2026
ExpectedMay 18, 2026
September 1, 2025
3 months
May 8, 2026
May 13, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
arch parameters
arch perimeter will be measured by 3d slicer software for digital prefabricated appliance and conventional fabricated appliance for both nance and TPA
3 months
Secondary Outcomes (1)
arch width
3 months
Study Arms (4)
digital Nance appliance
ACTIVE COMPARATORdigital Nance appliance
digital TPA appliance
ACTIVE COMPARATORdigital TPA appliance
conventional nance appliance
OTHERconventional nance appliance
conventional TPA appliance
OTHERconventional TPA appliance
Interventions
conventional fabricated nance appliance
conventional fabricated TPA space maintainer
Eligibility Criteria
You may qualify if:
- 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.
You may not qualify if:
- 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.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Pharos Univeristy in Alexandria
Alexandria, Egypt
Related Publications (1)
Change in Dental Arch Parameters-Perimeter, Width and Length after Treatment with a Printed RME Appliance Vladimir Bogdanov , Greta Yordanova and Gergana Gurgurova *
BACKGROUND
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- OUTCOMES ASSESSOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Lecturer
Study Record Dates
First Submitted
May 8, 2026
First Posted
May 18, 2026
Study Start
June 2, 2025
Primary Completion
September 2, 2025
Study Completion (Estimated)
June 2, 2026
Last Updated
May 18, 2026
Record last verified: 2025-09
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL