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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study

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Author(s):
Janson, Guilherme [1] ; Bastos Curty Silva, Lucas Nunes [1] ; Valerio, Marcelo Vinicius [1] ; Laranjeira, Vinicius [1] ; Niederberger, Ana [1] ; Garib, Daniela [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Vila Univ, Bauru Dent Sch, Dept Orthodont, Alameda Dr Octavio Pinheiro Brisolla, Bauru, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: TURKISH JOURNAL OF ORTHODONTICS; v. 34, n. 2, p. 122-126, JUN 2021.
Web of Science Citations: 0
Abstract

Objective: This study aimed to compare the treatment times in patients with complete bilateral Class II malocclusion, with and without mandibular crowding, treated with 4 premolar extractions. Methods: The sample comprised 57 retrospectively and consecutively selected patients (30 male, 27 female) treated for initial Class II malocclusion, divided as follows: Group 1 consisted of 23 patients (11 males, 12 females; mean age 13.13 years) presenting no crowding or 3 mm at most. Group 2 consisted of 34 patients (19 males, 15 females; mean age 13.06 years) presenting more than 4 mm of crowding. Crowding was manually measured in the initial dental casts. The Objective Grading System (OGS) index was manually measured in the final dental casts and radiographic images. The groups were comparable regarding initial age, gender distribution, and final occlusal statuses. The treatment times between the groups were compared using the t-test. Correlation between crowding and treatment time was evaluated with Pearson correlation coefficient. Results: Treatment times between the 2 groups were similar (P = .890) and there was no significant correlation between the amount of crowding and treatment time (r = 0.04, P = .760). Conclusion: Treatment times for complete Class II malocclusion with and without mandibular crowding, treated with 4 premolar extractions, are similar. (AU)

FAPESP's process: 11/16495-3 - Comparative study of time of treatment in pacients with and without crowding in cases of malloclussion class II treated with extractions of four premolars.
Grantee:Lucas Nunes Bastos Curty Silva
Support Opportunities: Scholarships in Brazil - Master