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Comparison Between Treacher Collins Syndrome and Pierre Robin Sequence: A Cephalometric Study.

Authors
  • Kato, Renata Mayumi1
  • Moura, Priscila Padilha2
  • Zechi-Ceide, Roseli Maria2
  • Tonello, Cristiano3
  • Peixoto, Adriano Porto4
  • Garib, Daniela5
  • 1 344933Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru-SP, Brazil. , (Brazil)
  • 2 Department of Genetic, 344933Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru-SP, Brazil. , (Brazil)
  • 3 Hospital Department, 344933Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru-SP, Brazil. , (Brazil)
  • 4 Department of Orthodontics, 344933Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru-SP, Brazil. , (Brazil)
  • 5 Department of Orthodontics, 344933Hospital for Rehabilitation of Craniofacial Anomalies and Bauru Dental School, University of São Paulo, Bauru-SP, Brazil. , (Brazil)
Type
Published Article
Journal
The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association
Publication Date
Jan 01, 2021
Volume
58
Issue
1
Pages
78–83
Identifiers
DOI: 10.1177/1055665620937499
PMID: 32613853
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

The aim of this study was to compare the dentoskeletal pattern of Treacher Collins syndrome (TCS) and nonsyndromic Pierre Robin sequence (PRS). Retrospective. Single center. Eighteen patients diagnosed with TCS (Group TCS) or PRS (Group PRS) in rehabilitation treatment at a single center. Group TCS was composed of 9 patients (4 male, 5 female) with a mean age of 12.9 years (standard deviation = 4.8). Group PRS was composed of 9 patients paired by age and sex with group TCS. Cone beam computed tomography-derived cephalometric images taken before the orthodontic or the orthodontic-surgical treatment were analyzed using Dolphin Imaging (Dolphin Imaging 11.0 & Management Solutions). Variables evaluating the cranial base, the maxillary and mandibular skeletal components, maxillomandibular relationship, the vertical components and the dentoalveolar region were measured. Intergroup comparisons were performed using t tests. The significance level considered was 5%. Intergroup differences in the mandible size and growth pattern were observed. Group TCS showed a smaller mandibular length (Co-Go, Co-Gn) and a higher palatal plane (SN-Palatal Plane) and mandibular plane angles (SN-Go.Gn) compared to group PRS. No differences between TCS and PRS were observed for the sagittal position of the maxilla, maxillomandibular relationship, and dental components. Treacher Collins syndrome presented a decreased mandible and a more severe vertical growth pattern compared to PRS.

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