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Teeth angulations after class II treatment with the Jones Jig followed by fixed appliances: A retrospective panoramic analysis.
Int Orthod. 2020 Sep; 18(3):436-442.IO

Abstract

OBJECTIVE

The purpose of this study was to compare the maxillary mesiodistal dental angulations of Class II malocclusion patients treated with the Jones Jig, followed by fixed appliances, with normal values of a historical control group, on panoramic radiographs.

MATERIAL AND METHODS

The sample comprised 80 panoramic radiographs of 40 patients divided into two groups. Eligibility criteria included patients with predominantly dental Class II malocclusion; the presence of all teeth up to the second molars and no previous orthodontic treatment. The experimental group was composed of 60 radiographs of 20 patients treated with the Jones Jig distalizer followed by fixed appliances. The radiographs were taken at pre-treatment (T0), post-distalization (T1), and post-treatment (T2). The historical control group comprised 20 radiographs of 20 subjects with untreated normal occlusion. The mesiodistal axial angulations of all maxillary erupted teeth were evaluated with the Dolphin Imaging software. Intragroup comparisons in the experimental group were performed with repeated measures analysis of variance (ANOVA), followed by Tukey tests. The experimental group at T2 versus the control group were compared with t tests.

RESULTS

After distalization, significant distal angulation of the molars (110.58°±8.54, P<0.000) and mesial angulation of the second (86.43°±8.08, P<0.000) and first premolars (80.11°±8.01, P<0.000) was observed. However, this was corrected after comprehensive fixed orthodontics (100.54°±6.53; 98.95°±7.00; 94.92°±6.44; P<0.000, for these teeth, respectively). Intergroup comparisons resulted in first molars, premolars, canines, and central incisors significantly more distally angulated in the experimental group, when compared to the control.

CONCLUSIONS

In general, at the end of orthodontic treatment, patients treated with the Jones Jig distalizer followed by fixed appliances presented more distally angulated maxillary teeth when compared to an untreated group with normal occlusion.

Authors+Show Affiliations

Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil. Electronic address: sbellinipereira@gmail.com.Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32753335

Citation

Bellini-Pereira, Silvio Augusto, et al. "Teeth Angulations After Class II Treatment With the Jones Jig Followed By Fixed Appliances: a Retrospective Panoramic Analysis." International Orthodontics, vol. 18, no. 3, 2020, pp. 436-442.
Bellini-Pereira SA, Sant'Anna GQ, Wagner MC, et al. Teeth angulations after class II treatment with the Jones Jig followed by fixed appliances: A retrospective panoramic analysis. Int Orthod. 2020;18(3):436-442.
Bellini-Pereira, S. A., Sant'Anna, G. Q., Wagner, M. C., Aliaga-DelCastillo, A., Patel, M. P., Henriques, J. F. C., & Janson, G. (2020). Teeth angulations after class II treatment with the Jones Jig followed by fixed appliances: A retrospective panoramic analysis. International Orthodontics, 18(3), 436-442. https://doi.org/10.1016/j.ortho.2020.06.002
Bellini-Pereira SA, et al. Teeth Angulations After Class II Treatment With the Jones Jig Followed By Fixed Appliances: a Retrospective Panoramic Analysis. Int Orthod. 2020;18(3):436-442. PubMed PMID: 32753335.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Teeth angulations after class II treatment with the Jones Jig followed by fixed appliances: A retrospective panoramic analysis. AU - Bellini-Pereira,Silvio Augusto, AU - Sant'Anna,Gabriel Querobim, AU - Wagner,Maria Claudia, AU - Aliaga-DelCastillo,Aron, AU - Patel,Mayara Paim, AU - Henriques,José Fernando Castanha, AU - Janson,Guilherme, Y1 - 2020/08/01/ PY - 2020/04/28/received PY - 2020/06/09/revised PY - 2020/06/13/accepted PY - 2020/8/6/pubmed PY - 2021/6/17/medline PY - 2020/8/6/entrez KW - Angle Class II KW - Corrective KW - Intraoral distalizers KW - Malocclusion KW - Orthodontics SP - 436 EP - 442 JF - International orthodontics JO - Int Orthod VL - 18 IS - 3 N2 - OBJECTIVE: The purpose of this study was to compare the maxillary mesiodistal dental angulations of Class II malocclusion patients treated with the Jones Jig, followed by fixed appliances, with normal values of a historical control group, on panoramic radiographs. MATERIAL AND METHODS: The sample comprised 80 panoramic radiographs of 40 patients divided into two groups. Eligibility criteria included patients with predominantly dental Class II malocclusion; the presence of all teeth up to the second molars and no previous orthodontic treatment. The experimental group was composed of 60 radiographs of 20 patients treated with the Jones Jig distalizer followed by fixed appliances. The radiographs were taken at pre-treatment (T0), post-distalization (T1), and post-treatment (T2). The historical control group comprised 20 radiographs of 20 subjects with untreated normal occlusion. The mesiodistal axial angulations of all maxillary erupted teeth were evaluated with the Dolphin Imaging software. Intragroup comparisons in the experimental group were performed with repeated measures analysis of variance (ANOVA), followed by Tukey tests. The experimental group at T2 versus the control group were compared with t tests. RESULTS: After distalization, significant distal angulation of the molars (110.58°±8.54, P<0.000) and mesial angulation of the second (86.43°±8.08, P<0.000) and first premolars (80.11°±8.01, P<0.000) was observed. However, this was corrected after comprehensive fixed orthodontics (100.54°±6.53; 98.95°±7.00; 94.92°±6.44; P<0.000, for these teeth, respectively). Intergroup comparisons resulted in first molars, premolars, canines, and central incisors significantly more distally angulated in the experimental group, when compared to the control. CONCLUSIONS: In general, at the end of orthodontic treatment, patients treated with the Jones Jig distalizer followed by fixed appliances presented more distally angulated maxillary teeth when compared to an untreated group with normal occlusion. SN - 1879-680X UR - https://www.unboundmedicine.com/medline/citation/32753335/Teeth_angulations_after_class_II_treatment_with_the_Jones_Jig_followed_by_fixed_appliances:_A_retrospective_panoramic_analysis_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1761-7227(20)30072-3 DB - PRIME DP - Unbound Medicine ER -