Clinical Medicine Research

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Incisor Inclination and Arch Width Changes Following Mandibular Setback Surgery for Correction of Mandibular Prognathism

Received: 16 November 2014    Accepted: 28 November 2014    Published: 02 December 2014
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Abstract

Purpose: The aim of this study was to investigate and evaluate the changes of incisor inclination and arch width in the surgical-orthodontic treatment to correct a Class Ⅲ malocclusion resulting from skeletal mandibular prognathism. Materials and methods: The skeletal mandibular prognathism subjects consisted of 25 males and 20 females (mean age:22.8±4.2years). A lateral cephalogram was taken for each subject before preoperative orthodontic treatment (T1), presurgical (T2), and at completion of the postoperative orthodontic treatment (T3). Skeletal and dental values and arch width measurements at T1, T2 and T3 were obtained. Each cephalogram was traced and digitized twice. For statistical evaluation, all the data were expressed as Mean±Standard deviation and analyzed with SPSS software. Results: At pretreatment, dental compensation was normally found in both dental arches, including anterior and posterior teeth. During presurgical orthodontic treatment, most of the patient’s mandibular incisors were significantly decompensated (P<0.05), while no significant changes were noted in the maxillary incisors (P ≥ 0.05). The increase in maxillary inter-first molar width were statistically significant (P<0.05). With effective dental decompensation, the relationship between teeth and basal bone was improved obviously. It is beneficial for moving bone bulk in surgery. After the surgery, most of the patients (97.8%) finished with proper overjet and overbite, establish stable and harmony occlusion. Conclusion: By effective and proper dental decompensation, desired teeth positions could be achieved before surgery, which could lead to better surgical results.

DOI 10.11648/j.cmr.20140306.15
Published in Clinical Medicine Research (Volume 3, Issue 6, November 2014)
Page(s) 181-188
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Dental Decompensation, Skeletal Madibular Prognathism, Orthognathic Surgery, Class Ⅲ Malocclusion, Harmony Occlusion

References
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[3] Johnston C, Burden D, Kennedy D, Harradine N, Stevenson M. Class III surgical-orthodontic treatment: A cephalometric study. Am J Orthod Dentofacial Orthop 2006; 130: 300-309.
[4] Troy BA, Shanker S, Fields HW, Vig K, Johnston W. Comparison of incisor inclination in patients with Class III malocclusion treated with orthognathic surgery or orthodontic camouflage. Am J Orthod Dentofacial Orthop 2009; 135: 146e1-146e9.
[5] Solow B. The dentoalveolar compensatory mechanism: background and clinical implications. Br J Orthod 1980; 7: 145-161.
[6] Reitzik M. Cephalometry in the surgical correction of prognathism. Br J Oral Surg 1972; 10: 1-11.
[7] Ning F, Duan YZ, Huo N. Camouflage treatment in skeletal Class III cases combined with severe crowding by extraction of four premolars. Orthod Waves 2009; 68: 80-87.
[8] Aksu M, Kocadereli I. Arch Width Changes in Extraction and Nonextraction Treatment in Class I Patients. Angle Orthodontist 2005; 75: 948-952.
[9] Ning F, Duan YZ. Camouflage treatment in adult skeletal Class III cases by extraction of two lower premolars. Korean J Orthod 2010; 40: 349-357.
[10] Bell WH, Jacobs JD. Tridimensional planning for surgical orthodontic treatment of mandibular excess. Am J Orthod 1981; 80: 263-288.
[11] Litton SF, Ackermann LV, Isaacson RJ. A genetic study of Class Ⅲ malocclusion. Am J Orthod 1970; 58: 565-577.
[12] Lee YS, Lee SJ, An H, Donatelli RE, Kim SH. Do Class III patients have a different growth spurt than the general population? Am J Orthod Dentofacial Orthop 2012; 142: 679-89.
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[19] Rakosi T, Schilli W. Class Ⅲ anomalies: a coordinated approach to skeletal, dental and soft tissue problems. J Oral Surg 1981; 39: 860-870.
[20] Isaacon JR, Isaacon RJ, Speidel TM. Extreme variation in vertical facial growth and associated variation in skeletal and dental relations. Angle Orthod 1971; 41: 219-229.
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Author Information
  • Department of Stomatology, Bethune international Peace Hospital(Of The People’s Liberation Army), Shijiazhuang City, Hebei Province, People’s Republic of China, 050082

  • Department of Orthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province, People’s Republic of China, 710032

  • Department of Stomatology, Bethune international Peace Hospital(Of The People’s Liberation Army), Shijiazhuang City, Hebei Province, People’s Republic of China, 050082

  • Department of Stomatology, Bethune international Peace Hospital(Of The People’s Liberation Army), Shijiazhuang City, Hebei Province, People’s Republic of China, 050082

Cite This Article
  • APA Style

    Fang Ning, Yinzhong Duan, Yi Xue, Donghui Yuan. (2014). Incisor Inclination and Arch Width Changes Following Mandibular Setback Surgery for Correction of Mandibular Prognathism. Clinical Medicine Research, 3(6), 181-188. https://doi.org/10.11648/j.cmr.20140306.15

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    ACS Style

    Fang Ning; Yinzhong Duan; Yi Xue; Donghui Yuan. Incisor Inclination and Arch Width Changes Following Mandibular Setback Surgery for Correction of Mandibular Prognathism. Clin. Med. Res. 2014, 3(6), 181-188. doi: 10.11648/j.cmr.20140306.15

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    AMA Style

    Fang Ning, Yinzhong Duan, Yi Xue, Donghui Yuan. Incisor Inclination and Arch Width Changes Following Mandibular Setback Surgery for Correction of Mandibular Prognathism. Clin Med Res. 2014;3(6):181-188. doi: 10.11648/j.cmr.20140306.15

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  • @article{10.11648/j.cmr.20140306.15,
      author = {Fang Ning and Yinzhong Duan and Yi Xue and Donghui Yuan},
      title = {Incisor Inclination and Arch Width Changes Following Mandibular Setback Surgery for Correction of Mandibular Prognathism},
      journal = {Clinical Medicine Research},
      volume = {3},
      number = {6},
      pages = {181-188},
      doi = {10.11648/j.cmr.20140306.15},
      url = {https://doi.org/10.11648/j.cmr.20140306.15},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.cmr.20140306.15},
      abstract = {Purpose: The aim of this study was to investigate and evaluate the changes of incisor inclination and arch width in the surgical-orthodontic treatment to correct a Class Ⅲ malocclusion resulting from skeletal mandibular prognathism. Materials and methods: The skeletal mandibular prognathism subjects consisted of 25 males and 20 females (mean age:22.8±4.2years). A lateral cephalogram was taken for each subject before preoperative orthodontic treatment (T1), presurgical (T2), and at completion of the postoperative orthodontic treatment (T3). Skeletal and dental values and arch width measurements at T1, T2 and T3 were obtained. Each cephalogram was traced and digitized twice. For statistical evaluation, all the data were expressed as Mean±Standard deviation and analyzed with SPSS software. Results: At pretreatment, dental compensation was normally found in both dental arches, including anterior and posterior teeth. During presurgical orthodontic treatment, most of the patient’s mandibular incisors were significantly decompensated (P<0.05), while no significant changes were noted in the maxillary incisors (P ≥ 0.05). The increase in maxillary inter-first molar width were statistically significant (P<0.05). With effective dental decompensation, the relationship between teeth and basal bone was improved obviously. It is beneficial for moving bone bulk in surgery. After the surgery, most of the patients (97.8%) finished with proper overjet and overbite, establish stable and harmony occlusion. Conclusion: By effective and proper dental decompensation, desired teeth positions could be achieved before surgery, which could lead to better surgical results.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - Incisor Inclination and Arch Width Changes Following Mandibular Setback Surgery for Correction of Mandibular Prognathism
    AU  - Fang Ning
    AU  - Yinzhong Duan
    AU  - Yi Xue
    AU  - Donghui Yuan
    Y1  - 2014/12/02
    PY  - 2014
    N1  - https://doi.org/10.11648/j.cmr.20140306.15
    DO  - 10.11648/j.cmr.20140306.15
    T2  - Clinical Medicine Research
    JF  - Clinical Medicine Research
    JO  - Clinical Medicine Research
    SP  - 181
    EP  - 188
    PB  - Science Publishing Group
    SN  - 2326-9057
    UR  - https://doi.org/10.11648/j.cmr.20140306.15
    AB  - Purpose: The aim of this study was to investigate and evaluate the changes of incisor inclination and arch width in the surgical-orthodontic treatment to correct a Class Ⅲ malocclusion resulting from skeletal mandibular prognathism. Materials and methods: The skeletal mandibular prognathism subjects consisted of 25 males and 20 females (mean age:22.8±4.2years). A lateral cephalogram was taken for each subject before preoperative orthodontic treatment (T1), presurgical (T2), and at completion of the postoperative orthodontic treatment (T3). Skeletal and dental values and arch width measurements at T1, T2 and T3 were obtained. Each cephalogram was traced and digitized twice. For statistical evaluation, all the data were expressed as Mean±Standard deviation and analyzed with SPSS software. Results: At pretreatment, dental compensation was normally found in both dental arches, including anterior and posterior teeth. During presurgical orthodontic treatment, most of the patient’s mandibular incisors were significantly decompensated (P<0.05), while no significant changes were noted in the maxillary incisors (P ≥ 0.05). The increase in maxillary inter-first molar width were statistically significant (P<0.05). With effective dental decompensation, the relationship between teeth and basal bone was improved obviously. It is beneficial for moving bone bulk in surgery. After the surgery, most of the patients (97.8%) finished with proper overjet and overbite, establish stable and harmony occlusion. Conclusion: By effective and proper dental decompensation, desired teeth positions could be achieved before surgery, which could lead to better surgical results.
    VL  - 3
    IS  - 6
    ER  - 

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