Tooth implant and effect on sinuses and what could happen?

Do not worry.  The worst case is an implant does not take or you develop an oral-antral (mouth to sinus) opening.This is usually not a problem but if it happens a bone graft with membranes can close the opening.  There may be extra time before implant is final and ready for crown.

At the time of implant placement there is a risk that the hole is prepared too close to the sinus Causing a perforation in to the sinus bone/ membrane If small enough this will heal on it's own And no other treatment is needed your doctor reassured you that he did not notice any problems. So u should be fine just incase there is a chance that there might be a  small perforation, try to avoid blowing your nose,  try to sneeze with your mouth open, take it easy not to exert alot of pressure in the area. This will prevent the perforation from getting enlarged and to allow for healing to take place ....watch for signs and symptoms of infection which include pain, swelling, discharge from the area.  Good luck 

I'd worry about everything in relation to this doctor placing and implant that violates the sinus membrane.There are imaging systems that help avoid this, not to mention techniques that assure a proper depth of preparation.  This needs to be investigated, in my opinion, by a different doctor, preferably a periodontist.

Dental implants placed on the upper posterior maxilla have a risk of proximity to the sinus, or have a portion extending into the sinus: IS THAT BAD?THE ANSWER: Lets look at the science. I restore ALOT of implants (and natural teeth). I also READ ALOT. A recent study in Laryngoscope (which is actually an Ear/Nose/Throat (ENT) specialty journal), studied dental implants that extend into the maxillary sinuses in a longterm followup that averaged about a decade (5-20years range). RESULTS: No sinus complications were observed. The absence of such complications, they concluded, was related to the maintenance of successful osseointegration. GENERALLY, posterior maxillary implants DO BETTER clinically, if patients actually treated the SINUSITIS, receiving combined medical & surgical therapy for sinusitis.Another longterm study showed radiographically there is a thickening of the sinus membrane (Schneiderian Membrane). However, there has been no major clinical sequela from these observations. (Could be an adaptive response??)Longterm implant success rates are different (less) if major sinus grafting is performed + implant placement, depending on the surgical technique (lateral vs. crestal approach). However, success rates still are +90% in each situation--- it doesn't sound like this happened in your case.I don't know where he got the 99.99%, but historically, implants known as "Zygomatics" have been deliberately placed through the sinus, with good success rates. Google "Zygomatic implant" for some pictures; these implants have 95% of the body IN THE SINUS and have good longterm followup.As with all information on the internet, consult you dental specialist prior to receiving any treatment. Hope that helps!Dr. Ace