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Biomechanical analysis of total arch maxillary distalization using infrazygomatic crest miniscrews: a finite element analysis study.
Schwertner, Alessandro; de Almeida-Pedrin, Renata Rodrigues; Poleti, Thais Maria Freire Fernandes; Oltramari, Paula; de Castro Conti, Ana Cláudia Ferreira; Cotrim-Ferreira, Flávio Augusto; de Almeida, Guilherme; Flores-Mir, Carlos; de Almeida, Marcio Rodrigues.
Afiliação
  • Schwertner A; Post-Doctorate Student, Department of Orthodontics, University of North Paraná, UNOPAR, Londrina, PR, Brazil.
  • de Almeida-Pedrin RR; Department of Orthodontics, University of North Parana, UNOPAR, Londrina, PR, Brazil.
  • Poleti TMFF; Department of Orthodontics, University of North Parana, UNOPAR, Londrina, PR, Brazil.
  • Oltramari P; Department of Orthodontics, University of North Parana, UNOPAR, Londrina, PR, Brazil.
  • de Castro Conti ACF; Department of Orthodontics, University of North Parana, UNOPAR, Londrina, PR, Brazil.
  • Cotrim-Ferreira FA; Instituto Vellini, São Paulo, SP, Brazil.
  • de Almeida G; Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.
  • Flores-Mir C; Division of Orthodontics, University of Alberta, Edmonton, AB, Canada.
  • de Almeida MR; Department of Orthodontics, University of North Parana, UNOPAR, Londrina, PR, Brazil. marcioralmeida@uol.com.br.
Prog Orthod ; 25(1): 10, 2024 Mar 11.
Article em En | MEDLINE | ID: mdl-38462550
ABSTRACT

AIM:

To evaluate the maxillary incisors and canine's immediate movement tendency using three different power arms (PA) height levels during total arch maxillary distalization supported on infrazygomatic crest (IZC) miniscrews according to finite element analysis (FEA).

METHODS:

Three finite element models of the maxilla were developed based on CBCT imaging of a teenage male patient presenting a Class II Division 1 malocclusion in the early permanent dentition. Maxillary complex, periodontium, orthodontic accessories, IZC miniscrews and an orthodontic wire were digitally created. The PAs were placed between canines and lateral incisors and projected at 4, 7, and 10 mm height distances. After that, distalization forces were simulated between PA and IZC miniscrews.

RESULTS:

The anterior teeth deformation produced in the FEA models was assessed according to a Von Mises equivalent. The stress was measured, revealing tendencies of initial maxillary teeth movement. No differences were found between the right and left sides. However, there was a significant difference among models in the under-stress areas, especially the apical and cervical root areas of the maxillary anterior teeth. More significant extrusion and lingual tipping of incisors were observed with the 4 mm power arm compared to the 7 mm and 10 mm ones. The 10 mm power arm did not show any tendency for extrusion of maxillary central incisors but a tendency for buccal tipping and intrusion of lateral incisors.

CONCLUSION:

The maxillary incisors and canines have different immediate movement tendencies according to the height of the anterior point of the en-masse distalization force application. Based on the PA height increase, a change from lingual to buccal tipping and less extrusion tendency was observed for the incisors, while the lingual tipping and extrusion trend for canines increased.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Procedimentos de Ancoragem Ortodôntica / Má Oclusão Classe II de Angle Limite: Adolescent / Humans / Male Idioma: En Revista: Prog Orthod Assunto da revista: ODONTOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Procedimentos de Ancoragem Ortodôntica / Má Oclusão Classe II de Angle Limite: Adolescent / Humans / Male Idioma: En Revista: Prog Orthod Assunto da revista: ODONTOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha