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    Avaliação da vitalidade pulpar em pacientes com rabdomiossarcoma ou carcinoma de rinofaringe, que receberam radioterapia para controle local da neoplasia
    (Universidade Federal de São Paulo (UNIFESP), 2021) Lopes, Rafael Paiva [UNIFESP]; Caran, Eliana Maria Monteiro [UNIFESP]; Universidade Federal de São Paulo
    With the advancement of technology and scientific development, the survival of children undergoing cancer treatment has increased significantly. However, treatment sequelae can manifest even y ears after the end of therapy. Objective: To evaluate the dental pulp vitality of patients with head and neck parameningeal rhabdomyosarcoma and rhinopharyngeal carcinoma who received radiotherapy for local control of the neoplasia. Methodology: Fifteen pa tients were admitted to the study group and thirty patients to the control group. A total of 494 anterior teeth were analyzed. To assess the pulp vitality, use the pulse oximeter apparatus adapted for dental use (which has a sensor "Y"), it being possible to position the buccal and lingual or tongue of the dental element. The pulp sensitivity test was performed by cooling the dental surface, using the refrigerant gas applied with cotton swab to the tooth surface. Results: Student's t test (alpha = 0.05) was used to analyze the mean% SpO2 of the teeth of the study (N = 158) and control (N = 336) groups. The average oxygen saturation obtained in the teeth of the study group was 86.06%, and 90.05% in the control group. Demonstrating a statistically significant difference between groups (p <0.0001). Pearson's correlation test with 0.05 alpha adjustment was used to assess the correlation between the results obtained with pulse oximetry and the degree of sensitivity. The results demonstrate a negative correlation (r = 0.8525; p <0.0001) between the mean% SpO2 and the degree of sensitivity reported by the patients. Conclusions: The levels of pulp oxygenation saturation in irradiated patients were lower when compared to the control group. There seems to be a relatio nship between pulp oxygenation and tooth sensitivity. The lower the oxygen rate, the greater the sensitivity.