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Eur J Orthod. 2017 Nov 30;39(6):595-600. doi: 10.1093/ejo/cjw091.

Efficiency of piezotome-corticision assisted orthodontics in alleviating mandibular anterior crowding-a randomized clinical trial.

Author information

1
Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, Farmington, USA.
2
Department of Preventive Dental Science, University of Dammam, Saudi Arabia.
3
Division of Periodontics, Department of Oral Health and Diagnostic Sciences, University of Connecticut School of Dental Medicine, Farmington, USA.
4
Department of Orthodontics, College of Dentistry, The University of Iowa, USA.
5
Division of Orthodontics, Department of Craniofacial Sciences, University of Connecticut School of Dental Medicine, USA.

Abstract

Objectives:

The aim of this clinical trial was to investigate the duration of mandibular-crowding alleviation with piezotome-corticision orthodontics compared with conventional orthodontics.

Design:

Single-centre, two-arm parallel group randomized controlled trial.

Setting:

Orthodontic clinic at the University of Connecticut.

Ethical approval:

The study was approved by the Institutional Review Board (IRB # 12-0147-2).

Subjects and methods:

Forty-one adult subjects from a single centre with more than 5mm of mandibular anterior crowding were randomly allocated using block randomization into experimental and control groups. The experimental group received a corticision procedure with a piezotome on the labial aspect of the mandibular incisors in conjunction to a self-ligation fixed orthodontic appliance. The control group received the self-ligation fixed orthodontic appliance and no corticision. Same archwire sequence (0.014 inch followed by 0.014 × 0.025 inch copper-nickel-titanium) was followed for both groups. Mandibular study casts taken every 4-5 weeks were used to assess changes in the irregularity index by blinded outcome assessors.

Outcome measures:

The time to alignment was calculated in days.

Results:

Twenty-nine subjects (16 experimental and 13 control) completed the study. Overall, no significant difference in the time required to correct mandibular crowding with piezotome-corticision assisted (102.1 ± 34.7 days; 95% CI, 83.6 to 120.6) and conventional orthodontics (112 ± 46.2 days; 95% CI, 84-139.9) was observed. No complications with treatment or unintended consequences were observed on any of the subjects.

Limitations:

A high attrition rate.

Conclusions:

This randomized clinical trial found no evidence that piezotome-corticision assisted orthodontics was more efficient in alleviating mandibular anterior crowding.

Registration:

ClinicalTrials.gov, Identifier: NCT02026258.

Funding:

Division of Orthodontics, University of Connecticut.

Conflict of Interest:

None.

PMID:
28371882
DOI:
10.1093/ejo/cjw091

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