Dentist

Hi Jolly,
It is not necessary but obtaining a job in UK itself is very competitive under the current scenario for international students and applicants. You are advised to check the The General Dental Council (GDC) which regulates dental professionals in the UK. Here is the official link:
https://www.gdc-uk.org/

Once you complete your studies you can simply start your own clinic.
Dentistry is an evergreen field. Making money is simpler and it is comparatively less risky.

The main difference between Bachelor of dental hygiene and Diploma in dental hygiene is after completing Bachelor's course you will be awarded a degree whereas in a diploma course you will end up becoming a diploma holder. A value of a degree is more than a Diploma. Alongside, the amount of knowledge and learning you gain in a degree course is more then a diploma course.

To become a child specialist, you must complete a bachelor's degree program in a relevant field, such as child psychology. After earning a bachelor's degree, child life specialists typically need to obtain CCLS certification from the Child Life Council. This certification involves at least 480 hours of fieldwork and passing an exam.
To become a dentist, a student needs to graduate from dental school (approximately a four year program), then pass licensing exams. Most students first get a bachelor's degree since dental programs prefer applicants who have completed an undergraduate degree.

Hi Prapti,
Different universities have different requirements. Some are more competitive and selective. So, you should visit the university website for the admission requirements. You can apply, since you have done BDS. You have to take IELTS or TOEFL, submit a personal statement of your career objectives, and submit reference letters. The other components will be mentioned on the university website.

A dentist earns an average salary of Rs.3.47 LPA. The experience strongly influences pay for this job.

Hi Gautami,
You must decide what to study and then take tests like GRE, TOEFL, etc. You must know that taking these tests involves time and money. It is entirely up to you, if you want to continue dentistry or not. Also, decide where to study as not every university and program requires GRE. GRE is mainly required in USA.