Volume 22 Issue 10
Oct.  2024
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Article Navigation >  Chinese Journal of General Practice  > 2024  >  22(10): 1660-1664
TIAN Ruixue, XIE Xiaofei, GUO Yun, LI Jie, DU Yue, LU Xiaomiao. Study of condylar motion trajectory changes before and after occlusal reconstruction in severe attrition[J]. Chinese Journal of General Practice, 2024, 22(10): 1660-1664. doi: 10.16766/j.cnki.issn.1674-4152.003706
Citation: TIAN Ruixue, XIE Xiaofei, GUO Yun, LI Jie, DU Yue, LU Xiaomiao. Study of condylar motion trajectory changes before and after occlusal reconstruction in severe attrition[J]. Chinese Journal of General Practice, 2024, 22(10): 1660-1664. doi: 10.16766/j.cnki.issn.1674-4152.003706
shu

Study of condylar motion trajectory changes before and after occlusal reconstruction in severe attrition

doi: 10.16766/j.cnki.issn.1674-4152.003706
  • 1.

    Department of Stomatology, the First Affiliated Hospital of Bengbu Medical University, Bengbu, Anhui 233004, China

Funds:

 KJ2021A0790

 2023AH051941

 BBWK2023A207

  • Received Date: 2024-01-09
    Available Online: 2024-12-28
    Abstract
  •   Objective  In patients with severe wear, the trajectory of the condyle is of critical importance during the mandibular movement. Therefore, the purpose of this study was to analyze the characteristics of condylar movement in such patients before and after occlusal reconstruction.  Methods  Thirty patients with severe attrition occlusion in the First Affiliated Hospital of Bengbu Medical University from January 2022 to June 2023 were selected as the study objects. After occlusal reconstruction, CADIAX was used to trace the condylar movement.  Results  During mouth opening and closing movement, the Y-axis, Z-axis, and S values on the irreducible anterior displacement side decreased after treatment, while the X-axis and position distance ofcondyle movement(DIF) values were higher after treatment (P < 0.05). However, the values of X, Y, Z, S, and DIF increased. On the reducible anterior displacement side, the X, Y, Z, S, and DIF values all decreased after treatment (P < 0.05). In addition, the sagittal condylar inclination (SCI), transversal condylar inclination (TCI), and these indicators at 5 mm displacement on the reducible anterior displacement side and irreducible anterior displacement side also decreased after treatment (P < 0.05). In the forward and backward movement, the displacement along the X, Y, Z axes, as well as the S and DIF values on both the reducible and irreducible anterior displacement sides significantly decreased after treatment (P < 0.05). In addition, SCI, TCI, and TCI at 5 mm of the irreducible anterior displacement were higher than those after treatment, and TCI and TCI at 5 mm of the reducible anterior displacement were higher than those after treatment as well (P < 0.05). In lateral movement, the X axis and Y axis displacement and the DIF were significantly reduced after treatment. When the working side had reducible or irreducible anterior displacement, the peak displacement of the condylar space increased significantly in the treatment group. In addition, the irreducible anterior displacement side had lower SCI and SCI at 5 mm displacement after treatment, while SCI of the reducible anterior displacement side also decreased (P < 0.05).  Conclusion  In patients with severe attrition, condylar trace can evaluate the dynamic range of condylar movement and serve as an important basis for effectiveness of diagnosis and treatment.

     

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