Journal of Dental Medical Public Health Volume 1 Issue 1 Year 2021 Pages 16-22 16 The Prevalence of Squamous Cell Carcinoma of The Oral Cavity at Hasan Sadikin Hospital in 2015-2018 Grace Monica (1) , I Gede Erlangga Satria Eka Putra (2) , Natallia Pranata (3) (1) Faculty of Dentistry, Maranatha Christian University, Indonesia (2) Faculty of Dentistry, Maranatha Christian University, Indonesia (3) Faculty of Dentistry, Maranatha Christian University, Indonesia Abstract: Squamous cell carcinoma is a type of cancer in soft tissue that has the highest incidence The national prevalence of tumors /oral cancer in Indonesia in 2007 was 0.4%. A total of 9 provinces have tumor/cancer prevalence above the national prevalence. The risk of squamous cell carcinoma is greater in individuals with several habits such as tobacco use and alcohol consumption. The purpose of this study was to determine the number of cases, frequency distribution of cases, and the prevalence of squamous cell carcinoma of the oral cavity at Hasan Sadikin Hospital Bandung in 2015-2018. This research was conducted retrospectively by taking secondary data from patients with squamous cell carcinoma. From this study it was found that the prevalence of squamous cell carcinoma patients based on the year of 2015-2018 was 0,22%, the majority of the patients are male with percentage were 95.21%, while 4.79% were female, most squamous cell carcinomas are located on the tongue. Keywords: squamous cell carcinoma; oral cavity; prevalence INTRODUCTION Squamous cell carcinoma is an invasive neoplasm of the epithelial tissue of the oral cavity with varying degrees of differentiation. Most of these tumor lesions are diagnosed at stages 3 and 4, leading to a poor prognosis. 1 Squamous cell carcinoma can occur on the lower lip, floor of the mouth, ventral and lateral parts of the tongue, retromolar area, tonsils and lateral of the soft palate. 2 Squamous cell carcinoma. tends to rapidly metastasize and spread. 3 Data from the World Health Organization (WHO) published in 2008 states that as many as 7.6 million people worldwide die from cancer, 70% of cases of cancer deaths occur in developing countries and only 30% are successfully treated. 4 Relatively recent data indicate that the incidence of neoplastic head and neck lesions is high, squamous cell carcinoma ranks sixth in the worldwide. 1 In the United States more than 21,500 cases of oral carcinoma are diagnosed annually and more than 6,000 Americans die each year from that disease. 1 The incidence of head and neck carcinoma varies widely in different regions of the world. In North America and the European Union, head and neck cancer represents 3–4% of all cancer cases diagnosed each year. In contrast, in South Asia and Africa, head and neck cancer has a higher incidence, almost double that in the United States and the European Union, representing about 8% to 10% of all forms of cancer. 1 The incidence of oral carcinoma is approximately 90% of all types of malignancies found in the oral cavity, and the frequency of oral squamous cell carcinoma in Indonesia reaches 3- 5% of all other organ cancers. The national prevalence of tumors/cancer of the oral cavity in Indonesia in 2007 was 0.4%. A total of nine provinces have tumor/cancer prevalence above the national prevalence. These provinces are West Sumatra, DKI Jakarta, West Java, Central Java, DI Yogyakarta, Banten, Bali, North Sulawesi, and South Sulawesi. 5 Out of 18,792 patients in the Department of Nose, Ear, and Throat Disease, Hasan Sadikin Hospital Bandung, there were 1,439 head and neck cancer patients in the 2010-2014 period with a prevalence of 7.6%. 3 Based on the things described above, the researchers felt the need to conduct research on the prevalence of squamous cell carcinoma and the frequency distribution of squamous cell carcinoma cases in the oral cavity based on gender, age, location and therapy received by patients in the Hasan Sadikin Hospital for the period of January 1, 2015 to December 31, 2018. METHODS This research was conducted in a retrospective descriptive by taking data from patients with squamous cell carcinoma of the oral cavity who were treated at Hasan Sadikin Hospital in Bandung for the period January 1 2015 - December 31 2018. The materials used in this study were secondary data in the form of medical records of patients with squamous cell carcinoma of the oral cavity. was treated at Hasan Sadikin Hospital in Bandung for the period January 1, 2015 - December 31, 2018. The data observed in this study were the prevalence of oral squamous cell carcinoma and how the spread of oral squamous cell carcinoma cases based on gender, age, location of carcinoma, disease progression of patients at Hasan Sadikin Hospital in the period January 1, 2015 to December 31, 2018. A disease can be defined as the number of people in a population who have been diagnosed with the disease, and who are still alive at any given time.