Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective Study
Objectives: The purpose of this retrospective study was to compare the pre- and post-treatment values of patients treated with monoblock and twin-block appliances with the values of the skeletal Class I individuals. Material and Methods: The initial lateral cephalometric radiographs of the pubert...
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Lithuanian University of Health Sciences, Faculty of Odontology
2021-06-01
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| Series: | eJournal of Oral Maxillofacial Research |
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| Online Access: | https://www.ejomr.org/JOMR/archives/2021/2/e4/v12n2e4ht.htm |
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| author | Burçin Akan Türkan Sezen Erhamza |
| author_facet | Burçin Akan Türkan Sezen Erhamza |
| author_sort | Burçin Akan |
| collection | DOAJ |
| description | Objectives: The purpose of this retrospective study was to compare the pre- and post-treatment values of patients treated with monoblock and twin-block appliances with the values of the skeletal Class I individuals.
Material and Methods: The initial lateral cephalometric radiographs of the pubertal untreated skeletal class I patients and cephalometric radiographs of 60 (30 monoblock, 30 twin-block) patients before and after the functional treatment were included in the study. Skeletal, dental, and soft tissue measurements were performed by a single researcher using Dolphin Imaging software version 11.95 (Dolphin Imaging, Chatsworth, CA, USA). Paired t-test was used for statistical evaluation and P < 0.05 was considered statistically significant.
Results: In both monoblock and twin-block groups, there was a statistically significant increase in the measurements of the lower jaw and the vertical direction values (sella nasion B point (SNB), pogonion nasion perpendicular, Y-axis, sella nasion-gonion gnathion, palatal-mandibular angle, anterior facial height, mandibular length P < 0.05); however, in the Twin-block group, the lower jaw was found to be displaced more forward (change for twin-block; SNB = 2.35, Wits appraisal = -4.77). The most measurements of the twin-block treated group were similar to the control group.
Conclusions: Both functional appliances have been identified to be useful in achieving treatment targets; however, with twin-block, results closer to ideal values are obtained. |
| format | Article |
| id | doaj-art-2ac762c211124a078e6d7db4f42396ca |
| institution | Kabale University |
| issn | 2029-283X |
| language | English |
| publishDate | 2021-06-01 |
| publisher | Lithuanian University of Health Sciences, Faculty of Odontology |
| record_format | Article |
| series | eJournal of Oral Maxillofacial Research |
| spelling | doaj-art-2ac762c211124a078e6d7db4f42396ca2025-08-20T03:58:10ZengLithuanian University of Health Sciences, Faculty of OdontologyeJournal of Oral Maxillofacial Research2029-283X2021-06-01122e410.5037/jomr.2021.12204Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective StudyBurçin AkanTürkan Sezen ErhamzaObjectives: The purpose of this retrospective study was to compare the pre- and post-treatment values of patients treated with monoblock and twin-block appliances with the values of the skeletal Class I individuals. Material and Methods: The initial lateral cephalometric radiographs of the pubertal untreated skeletal class I patients and cephalometric radiographs of 60 (30 monoblock, 30 twin-block) patients before and after the functional treatment were included in the study. Skeletal, dental, and soft tissue measurements were performed by a single researcher using Dolphin Imaging software version 11.95 (Dolphin Imaging, Chatsworth, CA, USA). Paired t-test was used for statistical evaluation and P < 0.05 was considered statistically significant. Results: In both monoblock and twin-block groups, there was a statistically significant increase in the measurements of the lower jaw and the vertical direction values (sella nasion B point (SNB), pogonion nasion perpendicular, Y-axis, sella nasion-gonion gnathion, palatal-mandibular angle, anterior facial height, mandibular length P < 0.05); however, in the Twin-block group, the lower jaw was found to be displaced more forward (change for twin-block; SNB = 2.35, Wits appraisal = -4.77). The most measurements of the twin-block treated group were similar to the control group. Conclusions: Both functional appliances have been identified to be useful in achieving treatment targets; however, with twin-block, results closer to ideal values are obtained.https://www.ejomr.org/JOMR/archives/2021/2/e4/v12n2e4ht.htmgrowth and developmentmandibleorthodonticsretrognathiatreatment outcome |
| spellingShingle | Burçin Akan Türkan Sezen Erhamza Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective Study eJournal of Oral Maxillofacial Research growth and development mandible orthodontics retrognathia treatment outcome |
| title | Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective Study |
| title_full | Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective Study |
| title_fullStr | Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective Study |
| title_full_unstemmed | Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective Study |
| title_short | Does Appliance Design Affect Treatment Outcomes of Class II Division 1 Malocclusion? A Two-Center Retrospective Study |
| title_sort | does appliance design affect treatment outcomes of class ii division 1 malocclusion a two center retrospective study |
| topic | growth and development mandible orthodontics retrognathia treatment outcome |
| url | https://www.ejomr.org/JOMR/archives/2021/2/e4/v12n2e4ht.htm |
| work_keys_str_mv | AT burcinakan doesappliancedesignaffecttreatmentoutcomesofclassiidivision1malocclusionatwocenterretrospectivestudy AT turkansezenerhamza doesappliancedesignaffecttreatmentoutcomesofclassiidivision1malocclusionatwocenterretrospectivestudy |