IADR Abstract Archives
Association Between Aggressive Apical Root Resorption and Intermaxillary Elastics
Objectives: To determine whether orthodontic treatment with fixed orthodontic appliances and intermaxillary elastics is associated with a higher prevalence of aggressive external root resorption (>5mm).
Methods: A retrospective analytical observational case-control association analysis was conducted with 240 patients treated with orthodontic appliances with available radiographic, diagnostic, and clinical records from the UCM database, who were eligible for participation in the present study and met the inclusion criteria.
Roots were measured from before and after treatment on panoramic orthopantomographic. The use of elastics during orthodontic treatment was registered, making difference between the use of class II or III elastics and anterior elastics.
For the statistical analysis, a descriptive analysis of the data was performed. In addition, the χ2 test was applied. The interaction of the use of elastics with the severe resorption parameter was established by backward conditional binary logistic regression. The risk of EARR was calculated by means of the Odds Ratio with a 95% confidence interval taking a value of p < 0.05 as statistically significant (SPSS 25.0 IBM Spain).
Results: Nearly the entire sample used class elastics (97.9%) and only 5 patients did not use them. And only 62 patients used anterior elastics during treatment (25.8%).
Based on the sample analyzed, the results of the EARR measurement were classified into two groups: with severe root resorption (>5mm) and without severe resorption (<5mm). Of the 240 patients, 71 had severe resorption (29.5%), compared to 169 who did not (70.5%).
Practically all patients used class elastics during the treatment; 97.2% of those with EARR and 98.2% of those without EARR. Anterior elastics were used by 25.4% of the patients who developed EARR and by 26% of those who did not suffer severe EARR.
Therefore, the results obtained do not show a statistically significant association (p>0.05) between the appearance of severe EARR and the use of elastics.
Conclusions: In this sample, the use of class II elastics, class III elastics and anterior elastics during the orthodontic treatment was not directly associated with a higher prevalence of severe EARR.
Methods: A retrospective analytical observational case-control association analysis was conducted with 240 patients treated with orthodontic appliances with available radiographic, diagnostic, and clinical records from the UCM database, who were eligible for participation in the present study and met the inclusion criteria.
Roots were measured from before and after treatment on panoramic orthopantomographic. The use of elastics during orthodontic treatment was registered, making difference between the use of class II or III elastics and anterior elastics.
For the statistical analysis, a descriptive analysis of the data was performed. In addition, the χ2 test was applied. The interaction of the use of elastics with the severe resorption parameter was established by backward conditional binary logistic regression. The risk of EARR was calculated by means of the Odds Ratio with a 95% confidence interval taking a value of p < 0.05 as statistically significant (SPSS 25.0 IBM Spain).
Results: Nearly the entire sample used class elastics (97.9%) and only 5 patients did not use them. And only 62 patients used anterior elastics during treatment (25.8%).
Based on the sample analyzed, the results of the EARR measurement were classified into two groups: with severe root resorption (>5mm) and without severe resorption (<5mm). Of the 240 patients, 71 had severe resorption (29.5%), compared to 169 who did not (70.5%).
Practically all patients used class elastics during the treatment; 97.2% of those with EARR and 98.2% of those without EARR. Anterior elastics were used by 25.4% of the patients who developed EARR and by 26% of those who did not suffer severe EARR.
Therefore, the results obtained do not show a statistically significant association (p>0.05) between the appearance of severe EARR and the use of elastics.
Conclusions: In this sample, the use of class II elastics, class III elastics and anterior elastics during the orthodontic treatment was not directly associated with a higher prevalence of severe EARR.