The document discusses barriers to utilization of dental health care services. It defines key terms like need, health services, utilization, and barriers. It then describes various factors that can act as barriers, such as age, gender, race, education level, income level, dental insurance coverage, and geographic location. Barriers are also classified in different ways by various researchers, such as availability, accessibility, affordability, acceptability and accommodation of services. Common barriers include cost of treatment, fear or anxiety associated with dental procedures, lack of perceived need for care, and lack of access to dental services and insurance coverage.