3D guided botulinum toxin injection in lateral pterygoid muscle for management of patients with disc displacement with reduction. | ||
| Alexandria Dental Journal | ||
| Articles in Press, Accepted Manuscript, Available Online from 06 October 2025 PDF (648.18 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/adjalexu.2025.374472.1618 | ||
| Author | ||
| Nourhan Raafa Soliman* | ||
| Oral and maxillofacial Surgery department, Faculty of Dentistry, Alexandria university, Egypt | ||
| Abstract | ||
| Abstract Introduction: Temporomandibular disorder is one of the most prevalent health disorders affecting psychological and physiological abilities of those affected, with disc displacement being one of its most common types. Lateral pterygoid muscle (LPM) injection with botulinum toxin (BTX) is a promising management modality for disc displacement with reduction (DDWR). However, its deep location and its surrounding structures necessitate use of guidance technique during its injection. In this study, a new guidance technique has been introduced using LPM segmentation for customized needle insertion guide. Objective: To evaluate the effectiveness of LPM segmentation for 3D guided botulinum toxin injection. Methodology: This study included 10 patients suffering from DDWR. Evaluation was done after 1,3 and 6 months for maximum interincisal opening, temporomandibular joint (TMJ) and LPM tenderness, and TMJ clicking and for disc position after 3 months. Result: Maximum mouth opening (MIO) showed insignificant reduction after 1 month. However, significant increase in MIO was detected at 3- and 6-month post injection. For disc position, improvement was detected at 3-month post injection. Significant improvement in TMJ and LPM tenderness and TMJ clicking disappearance were also detected at 1-, 3-and 6- month post injection. Conclusion: we concluded that using lateral pterygoid muscle segmentation in guided botulinum toxin injection is easy, reproducible and effective modality for lateral pterygoid muscle injection. | ||
| Keywords | ||
| Temporomandibular joint; Lateral pterygoid muscle; Disc displacement with reduction; Computed Tomography | ||
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