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.
Eur J Orthod
; 41(2): 154-164, 2019 03 29.
Article
en En
| MEDLINE
| ID: mdl-30007330
ABSTRACT
OBJECTIVE:
To compare orthodontically induced inflammatory root resorption (OIIRR) and patient perception of pain during orthodontic treatment between 0.018-inch and 0.022-inch slot bracket systems. SUBJECTS ANDMETHODS:
Eligible participants aged 12 years or above were allocated to treatment with the 0.018-inch or 0.022-inch slot MBT appliance (3M Unitek, Monrovia, California, USA) using block randomization in groups of 10. OIIRR was assessed radiographically using standardized 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 randomized (11 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 severity of OIIRR and patient perception of pain are not significant. TRIAL REGISTRATION The trial was registered with ClinicalTrials.gov on 5 March 2014, registration number NCT02080338.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Ortodoncia Correctiva
/
Resorción Radicular
/
Soportes Ortodóncicos
/
Maloclusión
Tipo de estudio:
Clinical_trials
/
Guideline
Límite:
Adolescent
/
Adult
/
Child
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Eur J Orthod
Año:
2019
Tipo del documento:
Article
País de afiliación:
Reino Unido