To assess the anxiety level of patients before, during, and after dental visits and injection of local anesthesia, and to compare the dental anxiety level among different age groups. A total of 296 patients who underwent different dental treatments in Namuthajiya and Muneseya campuses were included in this study. The subjects were divided into four age groups: 10–20-year, 21–30, 31–40, and above 41. Six questions were developed to assess the extent of anxiety levels among dental patients. The questions were “dental patient in relation to open mouth completely by the dentists”, “„patients during different treatments from instruments”, “„during and after local anesthesia injections”, “night before the dental appointments”, and “when the dentist is angry with the nurse”. Significant difference was considered at P<0.05. Patients aged 21–30 had the highest frequency, followed patients aged 31–40 at 28%. The frequency of the relaxed level of anxiety was the highest among most of the questions, at 68%, 44%, 43%, and 33% for questions number 4, 3, 1, and 5, respectively, and significant differences were found (P˂0.050). The anxious level of stress had the highest frequency of 30% in the question “During drilling from instruments”, whereas the frequency of the very anxious level of stress was high at 35% for the question related to “When the dentist is angry with the nurse”. No significant differences were found on both questions, with P values of 0.324 and 0.275. The recorded anxiety levels of patients before dental visits were low but were high during dental visits and treatments. Young and old patients showed increased stress levels during dental procedures.