A randomized clinical trial of the effectiveness of 0.018-inch and 0.022-inch slot orthodontic bracket systems: part 3 - biological side-effects of treatment

Ahmed M. El-Angbawi (Lead / Corresponding author), Yassir A. Yassir, Grant T. McIntyre, Gavin F. Revie, David R. Bearn

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3 Citations (Scopus)
108 Downloads (Pure)

Abstract

Objective: To compare orthodontically induced inflammatory root resoprtion (OIIRR) and patient perception of pain during orthodontic treatment between 0.018-inch and 0.022-inch slot bracket systems. Subjects and methods: Eligible participants aged 12 years or over were allocated to treatment with the 0.018-inch or 0.022-inch slot MBT appliance (3M-Unitek, Monrovia, California) using block randomisation in groups of ten. OIIRR was assessed radiographically using standardised periapical radiographs before and after 9 months from the start of treatment. Patient perception of pain was assessed using a validated patient questionnaire at 6 months from the start of treatment. Parametric tests (t-test) and non-parametric tests (Chi-square with Fisher’s exact tests and Kruskal-Wallis test) assessed differences between the groups (P < 0.05). The correlation between severity of OIIRR and abnormal root morphology, history of dental trauma, and pain during treatment was assessed. Results: Of the 187 participants randomised (1:1 ratio), 34 withdrew or were excluded (protocol deviations or poor cooperation). There were 77 patients in the 0.018-inch slot group and 76 patients in the 0.022-inch slot group (overall mean age: 19.1 years). Baseline characteristics were similar between groups (P > 0.05). There was no significant difference in the severity of the OIIRR nor patient perception of pain between the two study groups (P=0.115 and P= 0.08 respectively). The correlation between the severity of OIIRR and abnormal root morphology or history of dental trauma was not statistically significant (P=0.086 and P=0.313). Moreover, there was no significant correlation between the severity of OIIRR and pain during treatment (R= 0.045, P=0.617). Limitations: It was impossible to blind clinicians or patients to allocation and oral hygiene and periodontal outcomes were not assessed. Conclusions: The effect of bracket slot size on the on the severity of OIIRR and patient perception of pain is not significant.
Original languageEnglish
Article numbercjy039
Pages (from-to)154-164
Number of pages11
JournalEuropean Journal of Orthodontics
Volume41
Issue number2
Early online date11 Jul 2018
DOIs
Publication statusPublished - Apr 2019

Keywords

  • Adolescent
  • Adult
  • Child
  • Female
  • Humans
  • Male
  • Malocclusion/therapy
  • Orthodontic Appliance Design
  • Orthodontic Brackets/adverse effects
  • Orthodontics, Corrective/adverse effects
  • Pain Measurement/methods
  • Pain Perception
  • Patient Reported Outcome Measures
  • Radiography, Dental
  • Root Resorption/diagnostic imaging
  • Severity of Illness Index
  • Treatment Outcome
  • Young Adult

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  • Research Output

    • 3 Citations
    • 2 Article

    A randomized clinical trial of the effectiveness of 0.018-inch and 0.022-inch slot orthodontic bracket systems: part 1 - duration of treatment

    Yassir, Y. A., El-Angbawi, A. M., McIntyre, G. T., Revie, G. F. & Bearn, D. R., Apr 2019, In : European Journal of Orthodontics. 41, 2, p. 133-142 10 p., cjy037.

    Research output: Contribution to journalArticle

    Open Access
    File
  • 4 Citations (Scopus)
    101 Downloads (Pure)

    A randomized clinical trial of the effectiveness of 0.018-inch and 0.022-inch slot orthodontic bracket systems: part 2 - quality of treatment

    Yassir, Y. A., El-Angbawi, A. M., McIntyre, G. T., Revie, G. & Bearn, D. R., Apr 2019, In : European Journal of Orthodontics. 41, 2, p. 143-153 11 p., cyj038.

    Research output: Contribution to journalArticle

    Open Access
    File
  • 6 Citations (Scopus)
    94 Downloads (Pure)

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