Maxillary sinus floor grafting for placement of dental implant : a clinical and radiographic study
Kasama Aryatawong, Asst. Prof., D. of Surgery, F. of Dentistry, PSU.
Srichinda Aryatawong, D. of Stomatology, F. of Dentistry, PSU.
Corresponding e-mail : akasama@ratree.psu.ac.th
Published : J. Dental Assoc. Thai. 2000, 50(1) : 49-63
Key words : maxillary sinus, sinus lift, bone grafting, dental implant
Bone grafting to maxillary sinus floor is one of the methods to increase bone volume and
height to aid in implant placement and subsequent prosthetic reconstruction in atrophic posterior maxilla. In this article, the surgical technique and results of bone grafting to maxillary antral floor
in 21 patients are presented. The total of 28 sinuses were grafted using 4 different particulated graft-
ing materials. The bone substitute materials used were demineralized freeze-dried bone allograft (cortical bone granule and corticocancellous-crush bone), anorganic bovine bone (Bio-Oss¨) and alloplastic material ( HTRTM). They were used as single material or as a mixture with autogenous bone.
Perforation of the Schneiderian membrane was intraoperatively encountered in 17.8% of
cases without further complications. Postoperatively, maxillary sinusitis resulting in total loss of
graft was found from one sinus (3.6%). Sinus floor grafting was successful in 96.4%. Thirty-seven endosseous implants were inserted into the grafted sinuses. All the implants achieved osseointegra-
tion at stage II surgery. Therefore, 100% success of implants placed in this study was noted.
Grafting of the maxillary sinus floor with particulated graft results in high success with few complications. The procedure can be performed under local anesthesia in an outpatient setting, if autogenous bone from the iliac crest is not needed. Without harvesting bone graft from the hip, complications and morbidity of the procedure can be avoided.
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