Management of restricted mouth opening due to Temporomandibular joint disorders
Background: Restricted mouth opening, which is also known as Limited mouth opening, trismus, or lockjaw, has several causes and Temporomandibular joint disorders are considered as the main cause. Purpose: This study aimed to retrospectively review the causes of restricted mouth opening due to TMJ an...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Advances in Oral and Maxillofacial Surgery |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667147625000299 |
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| Summary: | Background: Restricted mouth opening, which is also known as Limited mouth opening, trismus, or lockjaw, has several causes and Temporomandibular joint disorders are considered as the main cause. Purpose: This study aimed to retrospectively review the causes of restricted mouth opening due to TMJ and its management. Study design: A retrospective cohort study of subjects who underwent Management of locked jaw Due to TMJ. A total of 879 consecutive patients with locked jaw in the period from 2016 to 2022 were reviewed for the causative factor and its management. Main outcome variable(s): maximum inter-incisal opening (MIO in mm), pain in the TMJ (Yes/No) using the visual analogue score (VAS). Results: the final sample consisted of 409 patients. Irreducible disc displacement represented 60 % of the total cases (245 patients with mean age 31.7 ± 5.5). Followed by TMJ osteoarthritis which represented 12 % (48 patients with mean age 38.4 ± 8.3), Joint adhesion Secondary to Immobilization (9 %), post-surgical represented 8.5 %, Anchored disc phenomenon (7.5 %). While ankylosis, coronoid hyperplasia, radiotherapy, were represented only 3 % (14 patients). Arthrocentesis with joint injection successfully used in treatment of 394 (96 %). Out of them, 21 patients didn't respond to the arthrocentesis and treated by second intervention with TMJ arthroscopy level II. 6 patients with TMJ ankylosis treated with Hegab protocol while one patient with failed joint prosthesis was treated with Total joint replacement. Conclusions: Arthrocentesis with joint injection could be used effectively in most cases of locked jaw secondary to TMJ. While TMJ arthroscopy could be used in un-responded cases. |
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| ISSN: | 2667-1476 |