No there is no help with capital costs for dental practices. There is no help for any costs at all , everything from cost of buying, equipping practice , to running costs , materials, lab bills, wages, NI , pensions etc has to be paid out of that money that is earned from seeing people.
Add to that if a patient fails to turn up the fixed costs still have to be paid but with no income. 40% of all new NHS dental patients fail to turn up and most practices run at a rate of 10 to 20% of regular patients fail to turn up or give adaquate cancellation to book anyone else in .
Add to time in surgery all equipment and surgeries will be disinfected and sterilised inbetween every patient , paperwork filled out , x rays reported on , referrals done , medical histories checked , NHS paperwork done, audits done etc etc .
Realistically in a very busy , medium needs area with a very experienced dentist working full out , they might achieve 30 UDAS a day which is equivalent to 30 check ups or 6 to 7 lots of filling treatments (if they only need one filling . In a high needs area that figure will be much less as people come in needing multiple fillings , extractions , with many visits which earn the practice no money . This level of work is extremely draining and will result in burn out . You cannot keep up that pace of work year after year without the inevitable toll on back, neck, skin , mental health that comes from doing microsurgery on a conscious patient , in a tiny wet and difficult to access area , in very awkward positions for 8 plus hours a day as well as all the admin, paperwork and running a team and business .
Then take off holidays , training days (compulsory) , sick days .
Just to run one room in a cheap area , set up for NHS dentistry costs upwards of £140 an hour without dentist/hygienist/therapist being paid . Most NHS dentistry runs at a loss and is subsidised by private work. https://www.bda.org/media-centre/nhs-dentistry-treasury-now-no1-roadblock-to-saving-service/