Acta odontologica Scandinavica 2017 11 10() 1-5 doi 10.1080/00016357.2017.1399214
BACKGROUND AND OBJECTIVE
radioiodine treatment (I(131)) used to treat thyroid carcinomas produces side effects (sialadenitis, xerostomia, dysphagia and caries susceptibility) reflecting in a poor patient quality of life. This study aimed to evaluate the effect of I(131) on salivary function and possible oral impairment.
MATERIAL AND METHODS
Thirty-seven patients undergoing I(131) were submitted to oral examination, answer questions regarding xerostomia/hyposalivation and collect saliva at three moments (M1: 30-45 days before I(131), M2: 1-2 days after I(131) and M3: 7-10 days after treatment). Saliva was assayed for flow rate and calcium/phosphate concentrations.
RESULTS AND CONCLUSIONS
significant difference in calcium/phosphate concentration was shown between M1 and M2, with evident decrease at M2. Flow rate reduced right after treatment with 41% of patients returning to previous rate at M3 (no statistical difference). A higher number of patients related xerostomia and difficulty in swallowing food at M2. The results showed that xerostomia/hyposalivation, dysphagia and calcium/phosphate concentration decrease may be considered early radioiodine side effects.