Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study
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) tre...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Galenos Yayinevi
2021-06-01
|
| Series: | Turkish Journal of Orthodontics |
| Subjects: | |
| Online Access: |
http://www.turkjorthod.org/archives/archive-detail/article-preview/treatment-time-of-class--malocclusion-with-and-wit/53325
|
| _version_ | 1827888917427257344 |
|---|---|
| author | Guilherme Janson Lucas Nunes Bastos Curty Silva Marcelo Vinicius Valerio Vinicius Laranjeira Ana Niederberger Daniela Garib |
| author_facet | Guilherme Janson Lucas Nunes Bastos Curty Silva Marcelo Vinicius Valerio Vinicius Laranjeira Ana Niederberger Daniela Garib |
| author_sort | Guilherme Janson |
| collection | DOAJ |
| description | 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 age13.06 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. |
| first_indexed | 2024-03-12T20:40:39Z |
| format | Article |
| id | doaj.art-ee9d36e70a7746de93ac895f6a509484 |
| institution | Directory Open Access Journal |
| issn | 2528-9659 2148-9505 |
| language | English |
| last_indexed | 2024-03-12T20:40:39Z |
| publishDate | 2021-06-01 |
| publisher | Galenos Yayinevi |
| record_format | Article |
| series | Turkish Journal of Orthodontics |
| spelling | doaj.art-ee9d36e70a7746de93ac895f6a5094842023-08-01T11:02:52ZengGalenos YayineviTurkish Journal of Orthodontics2528-96592148-95052021-06-0134212212610.5152/TurkJOrthod.2021.2012713049054Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective StudyGuilherme Janson0Lucas Nunes Bastos Curty Silva1Marcelo Vinicius Valerio2Vinicius Laranjeira3Ana Niederberger4Daniela Garib5 Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, Vila Universitária, Bauru, SP, Brazil Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, Vila Universitária, Bauru, SP, Brazil Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, Vila Universitária, Bauru, SP, Brazil Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, Vila Universitária, Bauru, SP, Brazil Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, Vila Universitária, Bauru, SP, Brazil Department of Orthodontics, Bauru Dental School, University of São Paulo, Alameda Dr. Octávio Pinheiro Brisolla, Vila Universitária, Bauru, SP, Brazil 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 age13.06 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. http://www.turkjorthod.org/archives/archive-detail/article-preview/treatment-time-of-class--malocclusion-with-and-wit/53325 angle class iitooth extractionsorthodonticstime-to-treatment |
| spellingShingle | Guilherme Janson Lucas Nunes Bastos Curty Silva Marcelo Vinicius Valerio Vinicius Laranjeira Ana Niederberger Daniela Garib Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study Turkish Journal of Orthodontics angle class ii tooth extractions orthodontics time-to-treatment |
| title | Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study |
| title_full | Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study |
| title_fullStr | Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study |
| title_full_unstemmed | Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study |
| title_short | Treatment Time of Class II Malocclusion, with and without Mandibular Crowding, Treated with Four Premolar Extractions: A Retrospective Study |
| title_sort | treatment time of class ii malocclusion with and without mandibular crowding treated with four premolar extractions a retrospective study |
| topic | angle class ii tooth extractions orthodontics time-to-treatment |
| url |
http://www.turkjorthod.org/archives/archive-detail/article-preview/treatment-time-of-class--malocclusion-with-and-wit/53325
|
| work_keys_str_mv | AT guilhermejanson treatmenttimeofclassiimalocclusionwithandwithoutmandibularcrowdingtreatedwithfourpremolarextractionsaretrospectivestudy AT lucasnunesbastoscurtysilva treatmenttimeofclassiimalocclusionwithandwithoutmandibularcrowdingtreatedwithfourpremolarextractionsaretrospectivestudy AT marceloviniciusvalerio treatmenttimeofclassiimalocclusionwithandwithoutmandibularcrowdingtreatedwithfourpremolarextractionsaretrospectivestudy AT viniciuslaranjeira treatmenttimeofclassiimalocclusionwithandwithoutmandibularcrowdingtreatedwithfourpremolarextractionsaretrospectivestudy AT ananiederberger treatmenttimeofclassiimalocclusionwithandwithoutmandibularcrowdingtreatedwithfourpremolarextractionsaretrospectivestudy AT danielagarib treatmenttimeofclassiimalocclusionwithandwithoutmandibularcrowdingtreatedwithfourpremolarextractionsaretrospectivestudy |