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Dentoalveolar and skeletal changes associated with the pendulum appliance followed by fixed orthodontic treatment.
Am J Orthod Dentofacial Orthop. 2006 Apr; 129(4):520-7.AJ

Abstract

INTRODUCTION

This prospective clinical study analyzed the distalization of maxillary molars achieved by the pendulum appliance and its effect on the anchorage teeth during and after fixed orthodontic treatment.

METHODS

Lateral cephalograms of 22 adolescents (15 girls, 7 boys) taken pretreatment, after distalization, after leveling and aligning, and after fixed orthodontic treatment were evaluated. The initial mean age was 14.5 years (SD = 1.80). The mean time for distalization of the maxillary molars was 5.85 months (SD = 1.82), and the total treatment time was 3.61 years (SD = 1.83).

RESULTS

The pendulum appliance moved the maxillary molars distally, but with significant distal inclination, protrusion of the anterior teeth, and increase in lower anterior facial height (LAFH) due to the clockwise mandibular rotation. After fixed orthodontic treatment, the maxillary incisors and the maxillary first premolars and first molars were returned to their pretreatment anteroposterior positions. Thus, at postdistalization, there was 2.1 mm of protrusion of the maxillary first molars, despite the anchorage reinforcement (Nance button and cervical headgear worn at night during fixed appliance therapy). However, at the end of treatment, all patients had Class I molar relationships.

CONCLUSIONS

The pendulum appliance followed by fixed orthodontic treatment corrected the Class II sagittal relationship, especially due to the dentoalveolar changes secondary to the spontaneous mandibular growth in the anterior direction during fixed appliance treatment.

Authors+Show Affiliations

Department of Orthodontics, Bauru Dental School, University of São Paulo, São Paulo, Brazil. fernandaang@aol.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16627178

Citation

Angelieri, Fernanda, et al. "Dentoalveolar and Skeletal Changes Associated With the Pendulum Appliance Followed By Fixed Orthodontic Treatment." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 129, no. 4, 2006, pp. 520-7.
Angelieri F, Almeida RR, Almeida MR, et al. Dentoalveolar and skeletal changes associated with the pendulum appliance followed by fixed orthodontic treatment. Am J Orthod Dentofacial Orthop. 2006;129(4):520-7.
Angelieri, F., Almeida, R. R., Almeida, M. R., & Fuziy, A. (2006). Dentoalveolar and skeletal changes associated with the pendulum appliance followed by fixed orthodontic treatment. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 129(4), 520-7.
Angelieri F, et al. Dentoalveolar and Skeletal Changes Associated With the Pendulum Appliance Followed By Fixed Orthodontic Treatment. Am J Orthod Dentofacial Orthop. 2006;129(4):520-7. PubMed PMID: 16627178.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dentoalveolar and skeletal changes associated with the pendulum appliance followed by fixed orthodontic treatment. AU - Angelieri,Fernanda, AU - Almeida,Renato Rodrigues de, AU - Almeida,Marcio Rodrigues de, AU - Fuziy,Acácio, PY - 2002/06/24/received PY - 2004/11/02/revised PY - 2004/11/02/accepted PY - 2006/4/22/pubmed PY - 2006/5/4/medline PY - 2006/4/22/entrez SP - 520 EP - 7 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 129 IS - 4 N2 - INTRODUCTION: This prospective clinical study analyzed the distalization of maxillary molars achieved by the pendulum appliance and its effect on the anchorage teeth during and after fixed orthodontic treatment. METHODS: Lateral cephalograms of 22 adolescents (15 girls, 7 boys) taken pretreatment, after distalization, after leveling and aligning, and after fixed orthodontic treatment were evaluated. The initial mean age was 14.5 years (SD = 1.80). The mean time for distalization of the maxillary molars was 5.85 months (SD = 1.82), and the total treatment time was 3.61 years (SD = 1.83). RESULTS: The pendulum appliance moved the maxillary molars distally, but with significant distal inclination, protrusion of the anterior teeth, and increase in lower anterior facial height (LAFH) due to the clockwise mandibular rotation. After fixed orthodontic treatment, the maxillary incisors and the maxillary first premolars and first molars were returned to their pretreatment anteroposterior positions. Thus, at postdistalization, there was 2.1 mm of protrusion of the maxillary first molars, despite the anchorage reinforcement (Nance button and cervical headgear worn at night during fixed appliance therapy). However, at the end of treatment, all patients had Class I molar relationships. CONCLUSIONS: The pendulum appliance followed by fixed orthodontic treatment corrected the Class II sagittal relationship, especially due to the dentoalveolar changes secondary to the spontaneous mandibular growth in the anterior direction during fixed appliance treatment. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/16627178/Dentoalveolar_and_skeletal_changes_associated_with_the_pendulum_appliance_followed_by_fixed_orthodontic_treatment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(05)01270-9 DB - PRIME DP - Unbound Medicine ER -