Objective: The aim of this study was to evaluate dentoskeletal changes in the treatment of Class II malocclusion with the Herbst Cantilever Bite Jumper (CBJ) appliance, associated with multibracket appliances after the growth peak, at pretreatment.
Materials And Methods: A sample of 37 individuals was divided into two groups: the experimental group comprised 16 patients treated consecutively for a mean period of 2.52 years with the Herbst CBJ appliance associated with multibracket appliances. A total of 21 subjects (10 males and 11 females) with Class II malocclusion and mean age at T1 of 16.08 years were followed for a mean period of 2.12 years composed the control group. Comparisons between the two groups were performed using initial and final lateral cephalograms. Comparisons between experimental and control groups at pretreatment and of the treatment changes were performed by Mann-Whitney or independent -tests.
Results: Experimental group exhibited a significantly greater labial inclination of the mandibular incisors in comparison to the control group. Additionally, significantly greater corrections in overbite, overjet, and molar relationship were observed in the experimental than in the control groups.
Conclusion: The effects of the Herbst CBJ appliance, associated with fixed appliances after the growth peak in Class II malocclusion treatment are correction in molar relationship toward a Class I relationship, decrease of the overjet, decrease of the overbite, and mandibular incisors labial inclination.
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http://dx.doi.org/10.1055/s-0040-1715789 | DOI Listing |
Am J Orthod Dentofacial Orthop
January 2025
Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.
Introduction: The objective of this study was to compare the dental and skeletal changes promoted by the miniscrew-anchored cantilever and pendulum appliance for Class II correction.
Methods: This retrospective study involved 52 patients with Class II malocclusion divided into 2 groups according to the treatment received: the miniscrew group (MG) with 23 patients (14 females and 9 males; mean initial age of 12.42 years) treated using the miniscrew-anchored cantilever, and the pendulum group (PG) with 29 patients (21 females and 8 males; mean initial age of 13.
Am J Orthod Dentofacial Orthop
January 2025
Department of Orthodontics, Faculty of Dentistry, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. Electronic address:
Introduction: This study aimed to assess the root resorption and alveolar bone changes of maxillary incisors volumetrically and 3-dimensionally in patients with Class II Division 1 malocclusion who underwent treatments involving the extraction of 4 first premolars with conventional fixed appliances (FAs) vs clear aligners (CAs).
Methods: A total of 320 maxillary incisors from 80 patients were assessed and divided into 2 groups (FAs and CAs), each possessing similar baseline characteristics. Pretreatment and posttreatment cone-beam computed tomography scans were used to analyze linear and volumetric orthodontically induced inflammatory root resorption, alveolar bone thickness (ABT), alveolar bone height (ABH), as well as anteroposterior and vertical movements of maxillary incisors.
J Clin Med
January 2025
Radboudumc 3D Lab, Radboud Institute for Health Sciences, Radboud University Medical Center, P. O. Box 9101, 6500 HB Nijmegen, The Netherlands.
This retrospective longitudinal outcome study comparing orthodontic extraction modalities, including extraction of maxillary first or second molars, aimed to compare the three-dimensional tooth movement of maxillary canines (C), premolars (P1, P2), and molars (M1, M2) in Class II division 1 malocclusion treatment with fixed appliances. A sample of 98 patients (mean age 13.20 ± 1.
View Article and Find Full Text PDFJ Clin Med
December 2024
The Department of Dentofacial Orthopaedics and Orthodontic, Wroclaw Medical University, 50-425 Wroclaw, Poland.
Ankyloglossia is a congenital, abnormally short, thickened, or tight lingual frenulum that restricts tongue mobility, which may impair the development of the lower face morphology, namely the occlusion and skeleton. The aim of this study was to evaluate whether and how the lingual frenotomy benefits the occlusion and lower face skeleton development. The authors, independently and in duplication, performed searches of PubMed, Cochrane Library, Medline, Web of Science, and Embase, introducing the following keywords: tongue tie, ankyloglossia, and short lingual frenum/frenulum, combined with malocclusion, lower face skeleton, and hyoid bone.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Oral Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
Temporomandibular joint osteoarthritis (TMJOA) is a common degenerative disease that causes chronic pain and joint dysfunction. However, the current understanding of TMJOA pathogenesis is limited and necessitates further research. Animal models are crucial for investigating TMJOA due to the scarcity of clinical samples.
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