Objectives: This study aimed to investigate the effects of conscious sedation on patient satisfaction with dental treatment. Methods: The survey included questions on the patients’ general characteristics, dental treatment fear, anxiety, and satisfaction, and patient evaluation by an observer. Statistical analyses were performed using SPSS 20.0 ver. and data were analyzed using frequency analysis, independent t-test, Pearson’s correlation coefficient, and multilinear regression analysis. Results: Patients who received conscious sedation therapy showed significantly lower levels of dental fear and anxiety, whereas their dental treatment satisfaction was significantly higher than that of patients who received regular dental treatment (p<0.05). Dental treatment fear, anxiety, satisfaction, and conscious sedation depth were significantly correlated in patients who received conscious sedation therapy (p<0.05). Factors influencing dental treatment satisfaction included age, weight, use of medication, smoking habits, use of conscious sedation therapy, dental treatment fear and anxiety, and conscious sedation depth (p<0.05). Conclusions: Conscious sedation therapy can be an effective method to reduce dental treatment fear and anxiety and improve patient satisfaction.