Preliminary Clinical Case Series for Evaluation of a Novel Bi-Dimensional Archwire During Miniscrew-Supported En-Masse Retraction of the Maxillary Anterior Teeth.
- 1Department of Orthodontics, Faculty of Dentistry, University of Damascus, Damascus P.O. Box 16046, Syria.
- 2Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Arab International University, Daraa P.O. Box 16046, Syria.
Abstract
Background/objectives
Efficient en-masse retraction of the maxillary anterior teeth requires adequate anchorage control while maintaining acceptable incisor torque. This prospective clinical case series aimed to provide an initial clinical evaluation of a novel laser-welded bi-dimensional archwire designed for miniscrew-supported en-masse retraction in adult patients with Class II Division 1 malocclusion.Methods
Six patients requiring extraction of the maxillary first premolars were treated using a custom-made stainless-steel archwire consisting of a 0.019 × 0.025-inch anterior segment and 0.016 × 0.022-inch posterior segments. Retraction was performed using nickel-titanium closed-coil springs delivering approximately 250 g of force per side. The primary outcome was the monthly rate of maxillary anterior retraction measured on three-dimensional digital models. The secondary outcome was the change in maxillary incisor torque assessed on lateral cephalometric radiographs using the bracket-archwire angle.Results
Repeated measurements showed no statistically significant systematic error, with method errors ranging from 0.14 to 0.31 mm for linear variables and from 0.72° to 1.08° for angular variables; intraclass correlation coefficients ranged from 0.91 to 0.97. The overall mean retraction rate was 0.97 ± 0.05 mm/month, and the mean retraction duration was 5.78 ± 0.79 months. The mean change in maxillary incisor torque was 7.08 ± 1.29°.Conclusions
Within the limitations of this six-participant clinical case series, the novel bi-dimensional archwire was associated with a relatively stable observed rate of anterior retraction, although a measurable change in the bracket-archwire angular relationship remained. These descriptive findings should be regarded as preliminary and hypothesis-generating and require confirmation in adequately powered controlled studies.Trial registration
ClinicalTrials.gov, NCT07664215; retrospectively registered on 24 June 2026.
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BibTeX
@article{almasri2026preliminary,
title = {{Preliminary Clinical Case Series for Evaluation of a Novel Bi-Dimensional Archwire During Miniscrew-Supported En-Masse Retraction of the Maxillary Anterior Teeth.}},
author = {Abdulmalek M H Almasri and Mohammad Y Hajeer and Ahmad S Burhan and Safwan Jaber},
journal = {Reports (MDPI)},
year = {2026},
month = oct,
doi = {10.3390/reports9040334},
url = {https://europepmc.org/article/MED/42924786},
note = {CC BY},
}
RIS
TY - JOUR
TI - Preliminary Clinical Case Series for Evaluation of a Novel Bi-Dimensional Archwire During Miniscrew-Supported En-Masse Retraction of the Maxillary Anterior Teeth.
AU - Abdulmalek M H Almasri
AU - Mohammad Y Hajeer
AU - Ahmad S Burhan
AU - Safwan Jaber
PY - 2026
DA - 2026/10/02
JO - Reports (MDPI)
DO - 10.3390/reports9040334
UR - https://europepmc.org/article/MED/42924786
AB - Background/objectives Efficient en-masse retraction of the maxillary anterior teeth requires adequate anchorage control while maintaining acceptable incisor torque. This prospective clinical case series aimed to provide an initial clinical evaluation of a novel laser-welded bi-dimensional archwire designed for miniscrew-supported en-masse retraction in adult patients with Class II Division 1 malocclusion.Methods Six patients requiring extraction of the maxillary first premolars were treated using a custom-made stainless-steel archwire consisting of a 0.019 × 0.025-inch anterior segment and 0.016 × 0.022-inch posterior segments. Retraction was performed using nickel-titanium closed-coil springs delivering approximately 250 g of force per side. The primary outcome was the monthly rate of maxillary anterior retraction measured on three-dimensional digital models. The secondary outcome was the change in maxillary incisor torque assessed on lateral cephalometric radiographs using the bracket-archwire angle.Results Repeated measurements showed no statistically significant systematic error, with method errors ranging from 0.14 to 0.31 mm for linear variables and from 0.72° to 1.08° for angular variables; intraclass correlation coefficients ranged from 0.91 to 0.97. The overall mean retraction rate was 0.97 ± 0.05 mm/month, and the mean retraction duration was 5.78 ± 0.79 months. The mean change in maxillary incisor torque was 7.08 ± 1.29°.Conclusions Within the limitations of this six-participant clinical case series, the novel bi-dimensional archwire was associated with a relatively stable observed rate of anterior retraction, although a measurable change in the bracket-archwire angular relationship remained. These descriptive findings should be regarded as preliminary and hypothesis-generating and require confirmation in adequately powered controlled studies.Trial registration ClinicalTrials.gov, NCT07664215; retrospectively registered on 24 June 2026.
SN - 2571-841X
ER -