Oral Surgery/Implant


QUESTION: I'm 21 years old male. My upper left central is missing and i had a bone graft from synthetic material two months ago. Now i have an appointment next week for the implant insertion.
But i read that if the implant is being placed in the upper jaw, there is the risk of drilling through jawbone into nasal cavity or sinus. If it happens then what kind of problem will occur and what will be the treatment, also i want to know how to minimize these kind of risk during surgery.

ANSWER: Hello Pankaj,

I don't think you should worry if you went to see a certified Oral surgeon who usually does a CT scan or a cone beam and makes very precise measurements prior to implant placement. Of course, if this is not the case, you can always run into complications among which is drilling through the nasal cavity in your case. The floor of the nose is quite thick and difficult to go through and even if this happens it should not cause any complications if the implant is not protruding through the nasal floor.

Best regards,


---------- FOLLOW-UP ----------

QUESTION: Thanks for your suggestion but my surgeon did only an OPG before the bone grafting not a CT scan or a cone beam as you mention.
Is it safe?

It is safe but not accurate enough. If you have enough bone i.e 12+ mmm then an OPG is ok as long as bone thickness can be assessed clinically. I don't see any reason why you should not get a cone beam CT in view of a reconstructed area in a very esthetic area. You should request it!



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Chawket MANNAI, DDS,Ph.D Diplomate ABOMS


I am a US board certified Oral & Maxillofacial Surgeon trained at UCLA and Parkland Memorial Hospital (Dallas) with more than 25 years of experience and will provide answers to all questions pertaining to the Oral& Maxillofacial Surgery region including Orthognathic Surgery, Trauma,TMJ, Implantology, tumour surgery (excluding cancer and Oral Dermatology),reconstructive surgery...


Extensive in all fields for the past 25 years hospital and office based.

American Association of Oral & Maxillofacial Surgeons American College of Oral & Maxillofacial Surgeons British Association of Oral & Maxillofacial Surgeons

2006: Mannai Chawket Early implant loading in severely resorbed maxilla using xenograft, autograft, and platelet-rich plasma in 97 patients. Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons 2006;64(9):1420-6. Bayonne, France. c.mannai@surgical.net 1998: Bell W H; Mannai C [An interview with Dr. W.H. Bell and Dr. C. Mannai. Interview by Colette Orival-Demange.] L' Orthodontie franšaise 1998;69(1):225-9. 1988: Abemayor E; Zemplenyi J; Mannai C; Webb D J; Canalis R F The fixation of malar fractures with the transnasal Kirschner wire. The Journal of otolaryngology 1988;17(4):179-82. Division of Head and Neck Surgery, Harbor-UCLA Medical Center, Torrance 90509. 1988: Wald R M; Abemayor E; Zemplenyi J; Mannai C; Lesavoy M A The transoral treatment of mandibular fractures using noncompression miniplates: a prospective study. Annals of plastic surgery 1988;20(5):409-13. Division of Plastic Surgery, Harbor/UCLA Medical Center. 1988: Di S; Bell W H; Mannai C; Seale N S; Hurt W C; Taylor J; Waite D E Long-term evaluation of human teeth after Le Fort I osteotomy: a histologic and developmental study. Oral surgery, oral medicine, and oral pathology 1988;65(4):379-86. Division of Oral and Maxillofacial Surgery, University of Texas Health Science Center, Dallas. 1988: Bell W H; Mannai C; Luhr H G Art and science of the Le Fort I down fracture. The International journal of adult orthodontics and orthognathic surgery 1988;3(1):23-52. 1986: Mannai C; Schwartz H C Juvenile nasopharyngeal angiofibroma presenting as a facial swelling. A case report. Journal of maxillofacial surgery 1986;14(6):329-31. 1986: Mannai C; Leake D; Pizzoferrato A; Ciapetti G; Sangiorgi C Histologic evaluation of purified bovine tendon collagen sponge in tooth extraction sites in dogs. Oral surgery, oral medicine, and oral pathology 1986;61(4):315-23.

DDS,Ph.D Fellow and Diplomate American Board of Oral & Maxillofacial Surgery Residency training:Harbor-UCLA MedicalCenter 1982-1985 Fellow OMFS Parkland Memorial Hospital Dallas Texas with William H.BELL

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