Oral Clinic, Vaasa Central Hospital, Vaasa, Finland.
Angle Orthod. 2009 Nov;79(6):1194-6. doi: 10.2319/092908-509R.1.
Although nickel is the most common cause of contact allergy, nickel-containing orthodontic appliances seldom cause adverse reactions that result in discontinuation of treatment. We report on an eruption of dermatitis in the face and neck of an adult female patient after placement of a rapid maxillary expansion appliance (RME). Because the patient suspected nickel allergy, her tolerance to the appliance material was tested intraorally before treatment by cementing bands on four teeth for a week. No visible adverse reactions were seen during the test. One week after cementation of the RME appliance, the patient reported strong itching of the face and a red rash. Clinical examination showed itchy papular erythema on the face and neck. No intraoral reactions or symptoms were present. The RME appliance was removed, and symptoms disappeared in 4 to 5 days. The patient was referred for a nickel patch test, which gave a strong positive result. Adverse patient reactions of potential allergic origin should be diagnosed carefully, and their possible impact on further treatment should be evaluated accordingly.
尽管镍是最常见的接触过敏原，但含镍的正畸矫治器很少引起不良反应，导致治疗中断。我们报告了一位成年女性患者在放置快速上颌扩张矫治器（RME）后，面部和颈部出现皮炎发作的情况。由于患者怀疑对镍过敏，在治疗前，通过在四颗牙齿上粘结带环一周的方式进行了口腔内的材料耐受性测试。测试期间未见明显不良反应。粘结 RME 矫治器一周后，患者报告面部强烈瘙痒和红斑。临床检查显示面部和颈部有瘙痒性丘疹性红斑。口腔内无反应或症状。RME 矫治器被移除，4 到 5 天后症状消失。患者被转诊进行镍斑贴试验，结果呈强阳性。应仔细诊断潜在过敏来源的患者不良反应，并相应评估其对进一步治疗的可能影响。
