Shanghai Journal of Stomatology ›› 2026, Vol. 35 ›› Issue (1): 88-94.doi: 10.19439/j.sjos.2026.01.015

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Investigation of postoperative xerostomia and contributory factors in patients with oral cancer

Guo Xingtong1, Hou Lili2   

  1. 1. The Third People's Hospital of Chengdu. Chengdu 610000, Sichuan Province;
    2. Nursing Department, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. Shanghai 200011, China
  • Received:2024-09-09 Revised:2025-01-13 Online:2026-03-12 Published:2026-03-12

Abstract: PURPOSE: To analyze the current status of postoperative xerostomia in patients with oral cancer and the contributory factors. METHODS: A total of 140 patients undergoing oral cancer surgery in Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine from March 2022 to November 2022 were selected as the study objects. The Numberical Rating Scale(NRS) and Unstimulated Saliva Flow Rate(USFR) were used to assess the degree of oral dryness. Thirst level was assessed using the Thirst Distress Scale(TDS). The quality of life and psychological status of patients were evaluated by Quality of Life Questionnaire-the Head and Neck Cancer Module (QLQ-H&N35) and Self-rating Anxiety Scale. The influence factors of NRS and USFR were analyzed by univariate and multifactorial regression. RESULTS: The results of multifactorial analysis showed that in terms of dry mouth severity, patients more than 60 years old had higher NRS scores than those less than 60 years old(β=-0.133, P<0.001). Bilateral removal of submandibular gland had higher NRS score than those with unresected/unilateral submandibular gland removal(β=-0.139, P=0.002). Patients with tracheotomy had higher NRS score than those without tracheotomy(β=-0.104, P=0.007). The higher NRS scores for postoperative abstinence from drinking for five days or more(β=-0.099,P=0.002), higher NRS scores for open-mouth breathing(β=-0.103,P=0.006). Higher postoperative QLQ-H&N35(β=0.007,P<0.001) and TDS(β=0.112,P<0.001) scores were associated with more severe oral dryness. USFR was lower in females compared to males(β=0.009, P=0.045), patients with a history of alcohol consumption(β=-0.018, P=0.002), patients treated with preoperative chemotherapy(β=0.015, P=0.006), patients with more than 11h of preoperative abstinence from drinking(β=0.02, P=0.001), and tracheotomized patients(β=-0.011, P=0.048). Patients with lower preoperative USFR had lower postoperative USFR(β=0.105, P<0.001), patients with higher TDS scores had a lower USFR(β=-0.006, P<0.001). CONCLUSIONS: Gender, age, submandibular gland removal, parotid duct ligation, tracheotomy, length of postoperative abstinence from drinking, open-mouth breathing, postoperative quality of life, and thirst affected patients' oral dryness and salivation. Healthcare professionals should recognize early and provide a basis for developing care measures to reduce oral dryness.

Key words: Oral cancer, Postoperative xerostomia, Influencing factors, Longitudinal research

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