Dental Implant Vs Braces

The best solution would be to have orthodontics (braces) done to upright the molar back into an ideal position.  This will help with your bite and make room for you to have a dental implant.  The implant can then be placed and allowed to heal for 3-5 months.  Once the implant has fully integrated with the bone a crown can be placed over the implant.  

Mini implants for crowns is "in beta phase", meaning they aren't designed for crowns, so invest in them at your own risk. If space is an issue, create space via braces and finish with a normal implant.

NEVER EVER put a mini-implant in a missing molar site. Molars are the widest teeth in the mouth for a reason: molars are in the back because that is where the largest forces of the bite are. Putting a thin and fragile mini-implant would carry disastrous consequences. First, see another dentist or preferably a specialist such a periodontist, oral surgeon or prosthodontist. Second, see an orthodontist to have an intelligent discussion as to wheat you should have braces. Under no circumstances should you consider a mini-implant in the molar area or you could have severe complications, fractured implants or worse. 

Tilted teeth are ideal for orthodontics and with teeth biting correctly and space established for a standard implant the case will have a great prognosis.  Cutting teeth and making do with inadequate space and mechanically inferior implant design is not a good plan.   

I totally agree the with responses below.  Uprighting the tipped molar is usually an excellent option that will help the longevity of the molar and dental implant that can be placed for the missing tooth. In fact, many orthodontist can probably upright the molar in minimal time without full braces.  Sometimes only brackets are needed on 4-6 teeth.