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Updated: Jul 1, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

Javier Girón de Velasco Sada1

  • 1Azalea 1, Edificio F, 28 109 Madrid, Espagne.

L' Orthodontie Francaise
|September 13, 2008
PubMed
Summary
This summary is machine-generated.

This study compared three maxillary expansion methods in children aged 7-10. Rapid palatal expansion after uprighting molars yielded greater skeletal expansion and molar intrusion, offering a potentially superior approach.

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Area of Science:

  • Orthodontics
  • Craniofacial Development
  • Pediatric Dentistry

Background:

  • Maxillary hypoplasia and transverse discrepancies are common in pediatric patients.
  • Various orthodontic appliances exist for maxillary expansion, each with distinct biomechanical properties.
  • Understanding the differential effects of these appliances is crucial for effective treatment planning.

Purpose of the Study:

  • To compare the skeletal and dental effects of three common maxillary expansion techniques.
  • To evaluate the axial inclination of maxillary first molars following expansion.
  • To assess the impact of different expansion methods on mandibular position.

Main Methods:

  • A randomized controlled trial involving 41 patients aged 7-10 years.

Related Experiment Videos

Last Updated: Jul 1, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

  • Three groups were studied: Quad helix appliance, rapid palatal expansion (RPE) with acrylic splint, and RPE after molar uprighting with Quad helix.
  • Measurements included skeletal and dental expansion, molar axial inclination, and mandibular positional changes.

    • Main Results:

    • Quad helix group showed greater dental expansion and molar extrusion.
    • RPE group exhibited increased axial inclination of maxillary molars.
    • RPE after molar uprighting group demonstrated greater skeletal expansion, molar intrusion, and negative torque.

    Conclusions:

    • Different maxillary expansion appliances yield distinct skeletal and dental outcomes.
    • Rapid palatal expansion following molar uprighting may offer enhanced skeletal expansion with controlled molar movement.
    • Appliance selection should be tailored to individual patient needs and treatment goals.