疾病防治
如果出現了張口困難而影響進食，我們如何應對？
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ᐕಂගɹۚ׳࢛ˀᏐf
Managing Trismus: a Common Complication with Radiotherapy for Nasopharyngeal Cancer
Radiotherapy is the effective first-line treatment for nasopharyngeal cancer. However, complications occur; trismus (inability
to open the mouth) is one of these. As there is no effective treatment for trismus, prevention is better especially as it is due
to fibrosis of the jaw muscles (that open and close the mouth) and the temporo-mandibular joints or TMJ – just in front of
the ear opening, provide the pivot for the mouth opening action. Initially, trismus presents as tightness of the TMJ; pain on
opening the mouth; with time, the dental gap (the gap between upper and lower incisor teeth) narrows till the mouth cannot
open at all. Start oral hygiene early: rinse mouth after meals; clench teeth 2-3 times/day, each 100 times; cheek-blowing
exercise with lips tightly closed: massage cheek muscles; tongue exercises by protrusion, rolling; rotate neck to left and
right. For mouth opening exercises, maintain widest dental gap by placing different sized corks between incisors for 5-10
sec, then clench teeth; repeat 4-5 times a day, each 15-20 min. Above all, psychological adjustment, developing interests,
etc. are also important for best quality of life.
