CT, with all its potentialities, seems to be the best imaging alterative in complex maxillary clefts. The lateral “scout view” of the CT allows a true cephalometric evaluation. Three-dimensional osseous and teeth images can be reconstructed from the usual axial sections, without further radiation. They offer a superb anatomical and practical approach in three dimensions yielding a precise determination of osseous defects and of teeth location. This study demonstrates, in particular, the advantages of the direct and precise approach to the dental structures included in bone by means of 3-D “dental” reconstruction at a threshold value between 1000 and 1500 Hounsfield units (HU), eliminating bony structures. The reconstruction allows exact spatial visualization of all the tooth structures included in bone without any distortion or superimposition as is encountered on pantographic and lateral cephalometric radiography. CT provides all the required information in one examination, facilitating preorthodontic or presurgical treatment planning in patients with complex maxillary clefts from the prepubertal period to adulthood.
European Journal of Plastic Surgery – Springer Journals
Published: May 8, 1998
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