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  • Title: Comparison of dental health of patients with head and neck cancer receiving IMRT vs conventional radiation.
    Author: Duarte VM, Liu YF, Rafizadeh S, Tajima T, Nabili V, Wang MB.
    Journal: Otolaryngol Head Neck Surg; 2014 Jan; 150(1):81-6. PubMed ID: 24145147.
    Abstract:
    OBJECTIVE: To analyze the dental health of patients with head and neck cancer who received comprehensive dental care after intensity-modulated radiation therapy (IMRT) compared with radiation therapy (RT). STUDY DESIGN: Historical cohort study. SETTING: Veteran Affairs (VA) hospital. SUBJECTS AND METHODS: In total, 158 patients at a single VA hospital who were treated with RT or IMRT between 2003 and 2011 were identified. A complete dental evaluation was performed prior to radiation treatment, including periodontal probing, tooth profile, cavity check, and mobility. The dental treatment plan was formulated to eliminate current and potential dental disease. The rates of dental extractions, infections, caries, mucositis, xerostomia, and osteoradionecrosis (ORN) were analyzed, and a comparison was made between patients treated with IMRT and those treated with RT. RESULTS: Of the 158 patients, 99 were treated with RT and 59 were treated with IMRT. Compared with those treated with IMRT, significantly more patients treated with RT exhibited xerostomia (46.5% vs 16.9%; P < .001; odds ratio [OR], 0.24; 95% confidence interval [CI], 0.11-0.52), mucositis (46.5% vs 16.9%; P < .001; OR, 0.24; 95% CI, 0.11-0.52), and ORN (10.1% vs 0%; P = .014; OR, 0.07; 95% CI, 0.00-1.21). However, significantly more patients treated with IMRT were edentulous by the conclusion of radiation treatment (32.2% vs 11.1%; P = .002; OR, 3.8; 95% CI, 1.65-8.73). CONCLUSION: Patients who were treated with IMRT had fewer instances of dental disease, more salivary flow, and fewer requisite posttreatment extractions compared with those treated with RT. The number of posttreatment extractions has been reduced with the advent of IMRT and more so with a complete dental evaluation prior to treatment.
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