Dental

Yes, you can get admission to BDS colleges. Based on the information you have given, you have a chance of getting admission into government colleges and private colleges that offer dental courses. I'm suggesting some colleges according to your rank. A list of BDS colleges is given below.
1-SRM Kattankulathur Dental College and Hospital University-Main Campus
2-Saveetha Dental College, Chennai
3-Manipal College of Dental Sciences, Bangalore; Manipal Academy of Higher Education
4-Manav Rachna Dental College
5-Padmashree Dr. D. Y. Patil Vidyapeeth, Navi Mumbai
If you want more information regarding the course, college, or anything else, kindly visit the link
https://www.shiksha.com/medicine-and-health-sciences/neet-college-predictor
Note that the results can also be different as they depend on many factors like domicile, gender, category, etc.

It is difficult to accurately predict in the absence of your category-based rank; however, based on the previous year's trends, it has been observed that you have to score more than 400 in NEET UG to get a government quota seat in Karnataka. With a score of 306, you may get into a Bachelor of Dental Surgery college, but you will get a private seat. For instance, you may get admission into dental colleges like the S. J. M. Dental College and Hospital under private quota seats. Alternatively, you can also use the Shiksha platform's NEET College Predictor 2022 (https://www.shiksha.com/medicine-and-health-sciences/neet-college-predictor) to get more specific recommendations of colleges you may get with this rank. To get a list of possible colleges, enter your NEET rank, gender, category, and domicile here.

Hey,
I am one of the best examples that you can relate to.
I've done my BDS and worked in a clinic for an year. Then gave my CAT, XAT, SNAP etc, and scored a whooping 97.36 percentile. I am currently an alumnus of XIMB-HR working in Jodhpur.
I also had a dentist amongst my seniors and one among my juniors in PG. A junior dentist gave her CAT and scored 99.2 and is an alumnus of IIM Calcutta. She didn't like being a dentist too.
Campus placements are good if you are good with your presentation skills, communication and are diligent enough. If you have a love for it, broaden your horizons, you need not stick to MHA nor think that you have wasted 5 years. It, infact, is a unique factor and helps you to get noticed.
As for me, I've never regretted choosing this path because just like you, I've always dreamed of being associated with big companies. Following your passion might not be always possible but doing what you dont like is something you might have to live with regretting for the rest of your life. Choose well.
All the best!!
Edit: An year after my MBA, I have now moved to my home state, working with Accenture. Your hardwork will pay.

Think DDS/ DMD or the residency in dentistry would be the best option to study abroad post BDS. As unlike in India, dentistry is one of the most respected profession in western world. Amongst the option you have provided I. e. Maharashtra or MBA or MS Healthcare administration, I would suggest you to go for the better university than degree. As all the above mentioned degrees will train you for the same skill Sets. Also, if you're considering the US as an option to pursue your higher education then try to inquire for a course that comes under STEM. As you will get 3 year optional practice training (OPT) post STEM course and you will get only 1 year OPT post non STEM course. Cheers!
PS: I could have helped you in a better way, if you had provided me countries you're considering for your higher education.

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Well, you can do anything buddy. Let me get straight to the point. Private practice - being a dentist u should be aware of this ( if you are ). You can setup your clinic in your place or any place in India after getting registered with DCI. Job (Medical Officer) - you can apply to the government. Posts via public service commission examination of state and centre. Or you can take a Private job in any hospital or clinic. (Provided there should be vacancy). Higher studies - After BDS you can go for PG course MS MPH Maharashtra or MBA etc. As well as there are plenty of Diploma courses. Job - (Banking, Administration or others) - Bieng a BDS you will be graduate by law and can apply to any government or private job where being graduate is a essential condition. (Provided Essential degree is not specified. Business - starting a business does not have any eligibility condition so you can start any business. There are several other options like politician, Writer, etc. (just kidding) but you can consider them. Thanks.