Morphological Structure Of The Infraorbital Canal Using Three Dimensional Reconstruction

ObjectiveTo evaluate accurately the initial position and approximatedirection of infraorbital canal by analyzing the parameters of infraorbitalcanal via64-slice CT scanning three-dimensional reconstructiontechnique, which can improve the success rate of the puncture.MethodOne hundred and ten patients were CT scanned, of which theimages were for three-dimensional reconstruction. The followingobservations and measurements were carried out：the length, angle andadjoin relations of initial infraorbital canal to compare the differencebetween left and right or male and female.ResultFour indicators were measured as below:①the length of initialinfraorbital canal②the distance between skin and the first obvious turnof infraorbital canal along the direction of initial infraorbital canal (thedepth of puncture)③the angle between the infraorbital canal and theFrankfurt plane④the angle between the infraorbital canal and the sagittal plane. The depths of puncture have significant differencesbetween male and female, others don’t in both side and sex.ConclusionMultilayer spiral scanning technology could display anatomicposition of the infraorbital canal three-dimensionally, which mightimprove the accuracy and effectiveness of clinical operation oninfraorbital canal. It can also provide effective help in some clinicalaspects such as local closed anesthesia in maxillofacial surgery andtreatment of the first Ⅱ branch of trigeminal nerve pain.