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Aim: By using the research diagnostic criteria (RDC) and Fonseca's questionnaire, the present study aimed at assessing the number of self-reported temporomandibular disorders (TMDs) discovered accidentally on routine dental examination and also at knowing the prevalence, severity, and awareness of patients toward TMD in Sakaka, Saudi Arabia. Materials and Methods: This is a descriptive cross-sectional epidemiological study. A sample of 100 patients with a chief complaint of pain in the temporomandibular joint (TMJ) was collected randomly; a routine examination of the TMJ using RDC was done. Fonsecas Anamnestic Index (FAI) questionnaire was used to collect and record the data. Later on, by using the SPSS software, sample t-test and ANOVA test were used; data analysis was conducted, and results were created. Results: The study revealed that 74% of participants belonged to the significant age group of 30 to 60 years (P < 0.05), with 79% male prevalence. The most common cause noted was psychological stress, filling of tooth, root canal treatment (RCT), and chewing gum. Based on the FAI questionnaire, the severity of TMD was moderate with 44% and RDC revealed 46% tenderness in masticatory muscles and 59% of clicking sound on auscultation. Orthopantomograph (OPG) evaluation showed flattening and condylar irregularities of bone. Conclusion: The number of self-reported cases of TMDs were very less. The severity of TMD was moderate, but the average population was not aware about it. [ABSTRACT FROM AUTHOR]