Correct spelling, explanation: the word dentist is correct because it is a well-established and widely recognized term in the English language. It has a clear and specific meaning, and it accurately describes a licensed healthcare professional who specializes in the diagnosis, treatment, and prevention of conditions and diseases related to teeth and the oral cavity. The term dentist has historical roots in both Latin and Old French, where it originally referred to someone skilled in working with teeth. This word is just as correct as dental.

Definition of dentist:
noun, a person whose job is treating people’s teeth
I have an appointment with the dentist tomorrow to get my teeth cleaned and checked.
After experiencing tooth pain, I visited the dentist, who determined that I needed a filling to address a cavity.

Collocations with dentist:
Some most commonly used collocations include:
1. Family dentist: a dentist who provides oral health care services for all members of a family.
Our family dentist has been taking care of our dental needs for years, from my grandparents to my younger siblings.
2. Dentist appointment: a scheduled visit to a dentist for a check-up, treatment, or consultation.
I need to reschedule my dentist appointment because something came up on that day.
3. Dentist office/clinic: the physical location where a dentist provides dental care and services.
The new dentist clinic in town offers state-of-the-art facilities and a friendly staff.
4. Dentist chair: the specialized chair in a dentist‘s office where patients receive treatments.
As I reclined in the dentist chair, I felt a bit nervous before the procedure.

Correct spelling, explanation: the similarity between dental and dentist lies in their shared Latin root dens, which means tooth. Dental is an adjective that describes things related to teeth, while dentist is a noun referring to a healthcare professional specializing in oral health. Both words ultimately trace back to the concept of teeth, reflecting their connection to the field of dentistry and oral care. You should use dental and dentist based on their grammatical roles and meanings.