, Volume 106, Issue 4, pp 445–453 | Cite as

Relapse after Le Fort I surgery in oral cleft patients: a 2-year follow-up using digitized and 3D models

  • Willian Saranholi da Silva
  • Ana Lúcia Pompéia Fraga de Almeida
  • Maria Giulia Rezende Pucciarelli
  • Karin Hermana Neppelenbroek
  • Juliana Dreyer da Silva de Menezes
  • Renato Yassutaka Faria Yaedú
  • Thais Marchini Oliveira
  • Flavia M. R. N. Cintra
  • Simone SoaresEmail author
Original Article


This retrospective observational study aimed to evaluate and identify the relapse rate after orthognathic surgery for maxillary advancement (Le Fort I maxillary osteotomy) in oral cleft patients through digitized cephalograms and 3D dental models, following 2 years. Lateral cephalograms and dental casts of 17 individuals, enrolled in Orthodontics Department in Hospital of Rehabilitation of Craniofacial Anomalies, were carried out. The digital cephalometric tracings were evaluated in: T1—before surgery, T2—immediate after surgery, T3—6-month to 1-year after surgery. The dental study casts were digitized and evaluated in: F1—before surgery; F2—3-month to 1-year after surgery; F3—1 to 2 years after surgery. The analyses of the dental arches were performed directly on the scanned images. A single examiner previously trained and calibrated performed all the assessments. Repeated measures ANOVA was applied to study the variables and compare the periods, followed by Tukey test to evaluate the statistically significant differences, with level of significance of 5%. The digital cephalogram results showed that the vertical movement statistically differed from T2 to T3 (p = 0.002). The right and left premolar relationship in digitized models revealed that at F2 the individuals exhibited ¼ Class II and Class I, in 29.4 and 23.5% of the cases, respectively; and at F3, Class I, 58.8 and 70.6% of the cases, respectively. The cephalometry showed the relapse in the vertical movement after orthognathic surgery for maxillary advancement, but no relapse in the other evaluated parameters.


Cephalometry Growth and development Le Fort osteotomy Orthognathic surgery Relapse 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.


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Copyright information

© The Society of The Nippon Dental University 2018

Authors and Affiliations

  • Willian Saranholi da Silva
    • 1
  • Ana Lúcia Pompéia Fraga de Almeida
    • 2
  • Maria Giulia Rezende Pucciarelli
    • 1
  • Karin Hermana Neppelenbroek
    • 3
  • Juliana Dreyer da Silva de Menezes
    • 1
  • Renato Yassutaka Faria Yaedú
    • 4
  • Thais Marchini Oliveira
    • 5
  • Flavia M. R. N. Cintra
    • 1
  • Simone Soares
    • 2
    Email author
  1. 1.Hospital for Rehabilitation of Craniofacial AnomaliesUniversity of São PauloBauruBrazil
  2. 2.Department of Prosthodontics and Periodontology, Bauru School of Dentistry, Hospital for Rehabilitation of Craniofacial AnomaliesUniversity of São PauloBauruBrazil
  3. 3.Department of Prosthodontics and Periodontology, Bauru School of DentistryUniversity of São PauloBauruBrazil
  4. 4.Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, Hospital for Rehabilitation of Craniofacial AnomaliesUniversity of São PauloBauruBrazil
  5. 5.Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry and Hospital for Rehabilitation of Craniofacial AnomaliesUniversity of São PauloBauruBrazil

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