Tags

Type your tag names separated by a space and hit enter

Effects of intrusion combined with anterior retraction on apical root resorption.
Eur J Orthod. 2012 Apr; 34(2):170-5.EJ

Abstract

This study evaluated the influence of intrusion mechanics combined with anterior retraction on root resorption of the maxillary incisors. A sample of 56 patients was divided into two groups: group 1 comprised 28 patients (12 females and 16 males), presenting with an increased overjet and deep overbite (6.48 and 4.78 mm, respectively) treated with reverse curve of Spee intrusion mechanics and group 2 comprised 28 patients (12 females and 16 males) with an increased overjet of 5.67 mm and a normal overbite of 1.12 mm. The initial mean ages for groups 1 and 2 were 13.41 and 13.27 years, respectively. Pre- (T1) and post- (T2) treatment periapical radiographs were used to evaluate root resorption. The groups were compared using the Mann-Whitney U-test. Correlation between root resorption and tooth movement was investigated with Spearman's correlation coefficient. The subjects in group 1 had statistically greater root resorption (P < 0.05) than those in group 2. The initial overbite severity and the amount of correction had significant positive correlations with root resorption (r = 0.324 and r = 0.320, respectively). The combination of anterior retraction with intrusive mechanics causes more root resorption than anterior retraction of the maxillary incisors alone.

Authors+Show Affiliations

Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

21389075

Citation

Martins, Décio Rodrigues, et al. "Effects of Intrusion Combined With Anterior Retraction On Apical Root Resorption." European Journal of Orthodontics, vol. 34, no. 2, 2012, pp. 170-5.
Martins DR, Tibola D, Janson G, et al. Effects of intrusion combined with anterior retraction on apical root resorption. Eur J Orthod. 2012;34(2):170-5.
Martins, D. R., Tibola, D., Janson, G., & Maria, F. R. (2012). Effects of intrusion combined with anterior retraction on apical root resorption. European Journal of Orthodontics, 34(2), 170-5. https://doi.org/10.1093/ejo/cjq178
Martins DR, et al. Effects of Intrusion Combined With Anterior Retraction On Apical Root Resorption. Eur J Orthod. 2012;34(2):170-5. PubMed PMID: 21389075.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of intrusion combined with anterior retraction on apical root resorption. AU - Martins,Décio Rodrigues, AU - Tibola,Douglas, AU - Janson,Guilherme, AU - Maria,Fábio Rogério Torres, Y1 - 2011/03/09/ PY - 2011/3/11/entrez PY - 2011/3/11/pubmed PY - 2012/9/26/medline SP - 170 EP - 5 JF - European journal of orthodontics JO - Eur J Orthod VL - 34 IS - 2 N2 - This study evaluated the influence of intrusion mechanics combined with anterior retraction on root resorption of the maxillary incisors. A sample of 56 patients was divided into two groups: group 1 comprised 28 patients (12 females and 16 males), presenting with an increased overjet and deep overbite (6.48 and 4.78 mm, respectively) treated with reverse curve of Spee intrusion mechanics and group 2 comprised 28 patients (12 females and 16 males) with an increased overjet of 5.67 mm and a normal overbite of 1.12 mm. The initial mean ages for groups 1 and 2 were 13.41 and 13.27 years, respectively. Pre- (T1) and post- (T2) treatment periapical radiographs were used to evaluate root resorption. The groups were compared using the Mann-Whitney U-test. Correlation between root resorption and tooth movement was investigated with Spearman's correlation coefficient. The subjects in group 1 had statistically greater root resorption (P < 0.05) than those in group 2. The initial overbite severity and the amount of correction had significant positive correlations with root resorption (r = 0.324 and r = 0.320, respectively). The combination of anterior retraction with intrusive mechanics causes more root resorption than anterior retraction of the maxillary incisors alone. SN - 1460-2210 UR - https://www.unboundmedicine.com/medline/citation/21389075/Effects_of_intrusion_combined_with_anterior_retraction_on_apical_root_resorption_ L2 - https://academic.oup.com/ejo/article-lookup/doi/10.1093/ejo/cjq178 DB - PRIME DP - Unbound Medicine ER -