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The accuracy of spiral tomography to assess bone quantity for the preoperative planning of implants in the posterior maxilla
Author(s) -
Serhal Charbel Bou,
Jacobs Reinhilde,
Persoons Marc,
Hermans Robert,
Steenberghe Daniel
Publication year - 2000
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1034/j.1600-0501.2000.011003242.x
Subject(s) - maxilla , spiral (railway) , spiral computed tomography , maxillary sinus , sinus (botany) , tomography , computed tomographic , implant , surgical planning , medicine , dentistry , orthodontics , computed tomography , mathematics , radiology , biology , surgery , mathematical analysis , botany , genus
When planning to place implants in the posterior region of the maxilla, the location of the maxillary sinus floor is influencing the available bone height and the implant length chosen. The aim of the present study was to evaluate in vitro the spiral tomographic technique that could be used for pre‐operative implant planning. Tomographs were taken of 6 dry human skulls using the Cranex Tome ® multifunctional unit (Orion Corporation Soredex, Helsinki, Finland). Three sites were selected in the left posterior maxilla and marked with gutta percha meaning a total of 18 sites (6×3=18) for interpretation. Bone height and width were measured on the tomographs and after sectioning also on the skulls. The values obtained from the measurements on tomographs were divided by an enlargement factor of 1.5 (as defined by the manufacturer) and then compared with those from the real measurements on the skulls. Real measurements were on average 0.24 mm (SD 0.19) lower than the tomographic measurements ( P <0.05). From the present results it could be concluded that spiral tomography using the recently developed Cranex Tome ® reveals sufficient information and detail for pre‐operative planning of a limited edentulous region.