Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2015 Feb 15;8(2):2385-91.
eCollection 2015.

Three-D imaging of dental alveolar bone change after fixed orthodontic treatment in patients with periodontitis

Zhi-Gui Ma  1 , Chi Yang  1 , Bing Fang  2 , Yun-Hui Xia  2 , Li-Xia Mao  2 , Yi-Miao Feng  3
Affiliations

Three-D imaging of dental alveolar bone change after fixed orthodontic treatment in patients with periodontitis

Zhi-Gui Ma et al. Int J Clin Exp Med. .

Abstract

Objectives: The objective of this study was to radiographically quantify bone height and bone density in patients with periodontitis after fixed orthodontic treatment using cone beam computed tomography (CBCT).

Materials and methods: A total of 81 patients including 40 patients with chronic periodontitis (group 1) and 41 patients with normal periodontal tissues (group 2) were selected. CBCT scanning for anterior teeth were taken before and after orthodontic treatment. Measurements of bone height and bone density were performed using CBCT software.

Results: The group 1 presented a statistically lesser bone density and bone height when compared to group 2 before treatment. There was a significant loss of bone density for both groups after orthodontic treatment, but bone density loss was significantly greater in the group 1. There was no statistically significant bone height change in two groups after treatment.

Conclusions: This study demonstrated that orthodontic treatment can preserve bone height but not capable of maintaining bone density, especially for patients with periodontitis. It is indicated that the change of bone density may be more susceptible than that of bone height when radiographically evaluating bone status under this combined periodontal and orthodontic therapy.

Keywords: CBCT; alveolar bone density; alveolar height; periodontal disease; tooth movement.

PubMed Disclaimer

Figures

Figure 1
Figure 1
The process for landmark location in the 3D images is as follows: A. Adjusting the long axis of the middle incisor to the vertical line. B. Locating the CEJ of the incisor in a sagittal slice. C. Rotating a line connected with adjacent incisors to the horizon level in an axial view. D. The largest selected image of the incisors in the coronal view.
Figure 2
Figure 2
Bone density measurement. A. Evaluations of alveolar bone density at the coronal, midroot and root apex levels of the interalveolar septum are performed. B. A curve of density value which is expressed as gray scale is obtained in the computer.
Figure 3
Figure 3
The alveolar height is the distance between the root apex and the middle point of the line connecting the mesial and distal alveolar crest.
See this image and copyright information in PMC

References

    1. Cao Z, Li C, Zhu G. MMP-1 promoter gene polymorphism and susceptibility to chronic periodontitis in a Chinese population. Tissue Antigens. 2006;68:38–43. - PubMed
    1. Wagenberg BD, Eskow RN, Langer B. Orthodontic procedures that improve the periodontal prognosis. J Am Dent Assoc. 1980;100:370–373. - PubMed
    1. Zachrisson BU. Clinical implications of recent orthodontic-periodontic research findings. Semin Orthod. 1996;2:4–12. - PubMed
    1. Tavares CA, Allgayer S, Calvete Eda S, Polido WD. Orthodontic treatment for a patient with advanced periodontal disease: 11-year follow-up. Am J Orthod Dentofacial Orthop. 2013;144:455–465. - PubMed
    1. Corrente G, Abundo R, Re S, Cardaropoli D, Cardaropoli G. Orthodontic movement into infrabony defects in patients with advanced periodontal disease: a clinical and radiological study. J Periodontol. 2003;74:1104–1109. - PubMed

LinkOut - more resources