Advertisement

Effect of mandibular advancement on the natural position of the head: a preliminary study of 3-dimensional cephalometric analysis

  • Xiaozhen Lin
    Affiliations
    Department of Oral & Maxillofacial Surgery, Fourth Military Medical University School of Stomatology, 145 W. Changle Rd., Xi’an, Shaanxi 710032, China
    Search for articles by this author
  • Yanpu Liu
    Correspondence
    Corresponding author. Tel.: +86 29 84772531; fax: +86 29 83223047.
    Affiliations
    Department of Oral & Maxillofacial Surgery, Fourth Military Medical University School of Stomatology, 145 W. Changle Rd., Xi’an, Shaanxi 710032, China
    Search for articles by this author
  • Sean P. Edwards
    Correspondence
    Corresponding author. Tel.: +1 734 936 8289; fax: +1 734 936 5941.
    Affiliations
    Department of Pediatric Oral & Maxillofacial Surgery, University of Michigan Health System CS Mott Children's Hospital, TC B1 208, 1500 E. Medical Center Dr., Ann Arbor, MI 48109-0018, USA
    Search for articles by this author

      Abstract

      Our aim was to investigate the potential effect of advancement by bilateral sagittal split osteotomy (BSSO) on the natural position of the head by using 3-dimensional cephalomentric analysis. Seven consecutive patients who had had only BSSO advancement, and had had preoperative and 6-week postoperative cone beam computed tomography (CT) scans, were recruited to this retrospective study. Two variables, SNB and SNC2, were used to indicate the craniomandibular alignment and craniocervical inclination, respectively, in the midsagittal plane. Using 3-dimensional cephalometric analysis software, the SNB and the SNC2 were recorded in volume and measured in the midsagittal plane at 3 independent time-points. The reliability was measured and a paired t test used to assess the significance of differences between the means of SNB and SNC2 before and after operation. The 3-dimensional cephalometric measurement showed good reliability. The SNB was increased as planned in all the mandibles that were advanced, the cervical vertebrae were brought forward after BSSO, and the SNC2 was significantly increased in 6 of the 7 patients. Three-dimensional cephalometric analysis may provide an alternative way of assessing cephalometrics. After BSSO advancement, the natural position of the head changed by increasing the craniocervical inclination in an anteroposterior direction.

      Keywords

      To read this article in full you will need to make a payment

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'

      Subscribe:

      Subscribe to British Journal of Oral and Maxillofacial Surgery
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect

      References

        • Solow B.
        • Sandham A.
        Cranio-cervical posture: a factor in the development and function of dentofacial structures.
        Eur J Orthod. 2002; 24: 447-456
        • Cuccia A.M.
        • Caradonna C.
        The natural head position. Different techniques of head positioning in the study of craniocervical posture.
        Minerva Stomatol. 2009; 58: 601-612
        • Damstra J.
        • Fourie Z.
        • Ren Y.
        Simple technique to achieve a natural position of the head for cone beam computed tomography.
        Br J Oral Maxillofac Surg. 2010; 48: 236-238
        • Cooke M.S.
        Five-year reproducibility of natural head posture: a longitudinal study.
        Am J Orthod Dentofacial Orthop. 1990; 97: 489-494
        • Peng L.
        • Cooke M.S.
        Fifteen-year reproducibility of natural head posture: a longitudinal study.
        Am J Orthod Dentofacial Orthop. 1999; 116: 82-85
        • Eriksson P.O.
        • Haggman-Henrikson B.
        • Nordh E.
        • Zafar H.
        Co-ordinated mandibular and head-neck movements during rhythmic jaw activities in man.
        J Dent Res. 2000; 79: 1378-1384
        • Springate S.D.
        A re-investigation of the relationship between head posture and craniofacial growth.
        Eur J Orthod. 2012; 34: 397-409
        • Solow B.
        • Kreiborg S.
        Soft-tissue stretching: a possible control factor in craniofacial morphogenesis.
        Scand J Dent Res. 1977; 85: 505-507
        • Solow B.
        • Siersbaek-Nielsen S.
        Cervical and craniofacial posture as predictors of craniofacial growth.
        Am J Orthod Dentofacial Orthop. 1992; 101: 449-458
        • Popat H.
        • Richmond S.
        • Marshall D.
        • Rosin P.L.
        Three-dimensional assessment of functional change following Class 3 orthognathic correction – a preliminary report.
        J Craniomaxillofac Surg. 2012; 40: 36-42
        • Kim Y.I.
        • Kim J.R.
        • Park S.B.
        Three-dimensional analysis of midfacial soft tissue changes according to maxillary superior movement after horizontal osteotomy of the maxilla.
        J Craniomaxillofac Surg. 2010; 21: 1587-1590
        • Misir A.F.
        • Manisali M.
        • Egrioglu E.
        • Naini F.B.
        Retrospective analysis of nasal soft tissue profile changes with maxillary surgery.
        J Oral Maxillofac Surg. 2011; 69: 190-194
        • Cho H.J.
        A three-dimensional cephalometric analysis.
        J Clin Orthod. 2009; 43: 235-252
        • Gateno J.
        • Xia J.J.
        • Teichgraber J.F.
        New 3-dimensional cephalometric analysis for orthognathic surgery.
        J Oral Maxillofac Surg. 2011; 69: 606-622
        • Gateno J.
        • Xia J.J.
        • Teichgraber J.F.
        Effect of facial asymmetry on 2-demensional and 3-dimensional cephalometric measurements.
        J Oral Maxillofac Surg. 2011; 69: 655-662
        • Kapila S.
        • Conley R.S.
        • Harrell Jr., W.E.
        The current status of cone beam computed tomography imaging in orthodontics.
        Dentomaxillofac Radiol. 2011; 40: 24-34
        • Kim T.S.
        • Caruso J.M.
        • Christensen H.
        • Torabinejad M.
        A comparison of cone-beam computed tomography and direct measurement in the examination of the mandibular canal and adjacent structures.
        J Endod. 2010; 36: 1191-1194
        • Muto T.
        • Takeda S.
        • Kanazawa M.
        • Yamazaki A.
        • Fujiwara Y.
        • Mizoguchi I.
        The effect of head posture on the pharyngeal airway space (PAS).
        Int J Oral Maxillofac Surg. 2002; 31: 579-583