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Which orthodontic archwire sequence? A randomized clinical trial.

Na Mandall1, C Lowe, Hv Worthington

  • 1School of Dentistry, University of Manchester, Sheffield, UK. nicola.a.mandall@manchester.ac.uk

European Journal of Orthodontics
|October 17, 2006
PubMed
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Three orthodontic archwire sequences were compared, finding no significant differences in patient discomfort or root resorption. Sequence B required more visits to reach the working archwire compared to sequence A.

Area of Science:

  • Orthodontics
  • Biomaterials Science
  • Clinical Research

Background:

  • Orthodontic treatment relies on archwire sequences to guide tooth movement.
  • Different archwire materials and dimensions may influence treatment efficiency and patient experience.
  • Understanding the comparative efficacy of various sequences is crucial for optimizing orthodontic care.

Purpose of the Study:

  • To compare three distinct orthodontic archwire sequences for their effects on patient discomfort, treatment duration, and root resorption.
  • To evaluate the clinical performance of nickel-titanium (NiTi), copper NiTi (CuNiTi), and stainless steel (SS) archwires in adolescent patients.

Main Methods:

  • A randomized controlled trial involving 154 patients aged 10-17 years across three centers.
  • Patients were assigned to one of three archwire sequences (A, B, or C) involving NiTi, CuNiTi, and SS wires.

Related Experiment Videos

  • Data collected included patient-reported discomfort scores, time to reach a 0.019 x 0.025-inch SS working archwire, and assessment of root resorption via periapical radiographs.

    • Main Results:

    • No statistically significant differences were found in patient discomfort or root resorption among the three archwire sequences (P > 0.05).
    • Sequence B required a significantly greater number of visits to achieve the working archwire compared to sequence A (P = 0.012).
    • The increased number of visits for sequence B was not attributable to the number of archwires used.

    Conclusions:

    • The choice of archwire sequence among the tested options (A, B, C) does not significantly impact patient discomfort or the degree of root resorption.
    • While sequence B may lead to a longer treatment duration in terms of visits, the underlying reasons require further investigation.
    • Clinical decisions regarding archwire sequencing should consider factors beyond discomfort and root resorption, potentially including treatment efficiency and patient adherence.