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Evaluation of the Relationship Between Zygomatic Arch Fracture Reduction and Mandibular Movements

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Abstract

Objective

The aim of this study was to evaluate the relationship between surgical zygomatic arch fracture reduction and mandibular movements in different fracture types.

Materials and Methods

Fractures were classified according to the Yamamoto classification. The extent of zygomatic arch reduction after surgery was evaluated by measuring three reference points on both fractured and normal side both before and after surgery. The selected reference points were: the most anterior (A1), the most posterior (B1) and the midpoint (C1) relative to midsagittal plane on the fracture side and the same points on the normal side (a1, b1, c1). Mouth opening, movements to right and left were recorded in these patients.

Results

The highest extent of zygomatic arch reduction was observed at the midpoint of the arch (p = 0.041). Surgery did not significantly alter other points of the zygomatic arch. The extent of reduction of the zygomatic arch was not significantly associated with mandibular movements. However, type of fracture correlated with lateral excursion to the right and left (p = 0.002 and p = 0.031, respectively).

Conclusion

This study showed that the amount of post-surgical changes in zygomatic arch reduction was not significantly related to mandibular movements. In addition, the amount of lateral excursion two weeks after surgical correction of more severe types of zygomatic arch fractures was less compared with other fracture types. Patients with more severe fractures may need to be followed for a longer period of time in order to regain the normal mandibular movement range.

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Acknowledgements

We kindly express our gratitude to Dr. Narges Pouremadi.

Funding

This study was financially supported by Shiraz University of Medical Sciences as a partial requirement for obtaining DDS degree (#12309).

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Authors and Affiliations

Authors

Contributions

Design and concept: MSK, MB, AH; data collection: MB, ME; data analysis and interpretation: PS, RP; preparing the original draft: MB, ME, AH; revision of the draft: MSK, PS, RP.

Corresponding author

Correspondence to Maryam Eisazadeh.

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Conflict of interest

None.

Ethical Approval

This study was approved by the Ethics Committee of Shiraz University of Medical Sciences (#IR.SUMS.REC.1395.S1095).

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Khaghaninejad, M.S., Bahreini, M., Soltani, P. et al. Evaluation of the Relationship Between Zygomatic Arch Fracture Reduction and Mandibular Movements. J. Maxillofac. Oral Surg. (2024). https://doi.org/10.1007/s12663-023-02088-y

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  • DOI: https://doi.org/10.1007/s12663-023-02088-y

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