Tehran University of Medical Sciences Journal of Craniomaxillofacial Research 2345-5489 1 3-4 2015 10 12 37 41 EN Katayoun Sargeran Department of Community Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran 2015 10 12 2015 10 12 Introduction:  Despite  recent  advances  in  treatment  of  oral  cancer,  it  still causes high rates of mortality and morbidity worldwide. Delays in diagnosis and treatment of these cancers greatly affect the prognosis.  This study aimed to assess the treatment delay and its relation to diagnostic delay among oral cancer patients in Tehran, Iran. Materials and Methods: We studied 100 patients with primary oral squamous cell carcinoma who were admitted to three teaching hospitals between 2004 and 2006. Treatment delay was defined as the time from diagnosis to the beginning of treatment. Diagnostic delay is considered as the time elapsed between the onset of symptoms and diagnosis. Results: Of all the patients 53% were male with the mean age of 61.5 (SD 15.8 years; range 24-100 years) at diagnosis. The majority of tumors (61%) were at advanced stages when diagnosed (stages III or IV). The mean diagnostic delay was 7.2 months (SD 7.5) and the mean treatment delay was 33.16 days (SD14.1).  Patients  who  were  diagnosed  at earlier  stages  had  longer  treatment delays (p<0.05), and those who had longer diagnostic delay had shorter treatment delay (p<0.05). Conclusions:  Our  findings  indicated  a  need  for  oral  cancer  prevention campaigns, focused on reducing the delays between the appearance of signs and symptoms, and final diagnosis and treatment to ensure better prognosis and higher quality of life for patients. https://jcr.tums.ac.ir/index.php/jcr/article/view/12 https://jcr.tums.ac.ir/index.php/jcr/article/download/12/57