ABSTRACT
Objective To evaluate the diagnostic value of spiral CT in location with impacted teeth.Methods Sixteen cases with impacted teeth were examined with multiplanar reformation(MPR)and the 3D-reconstruction of the cross spiral CT scans.Results There were 16 cases of which 11 impacted teeth located in palate sides and of which 4 in lip sides.Another one impacted teeth,the teeth root located in palate sides,and the teeth crown located in lip sides.Central incisor was 9 cases.Lateral incisor was 1 case.Cuspid tooth was 6 cases.Conclusion Spiral CT could accuraterly located for the impacted teeth.The reconstruction image can clearly precent the dental surface image including crown,root,neck and rootbifurcation in threedimensional way labial or palatal location,eruption orientation and relation with dentition in anterior maxilla.It can be applied to examine impacted teeth in bone before surgical and orthodontic treatment.
ABSTRACT
Objective To investigate the applied of CR system in X-ray photography bedside.Methods X-ray photography bedside was proformed in 900 cases.The imaging quality in excellent,good and poor was evaluated.Results Of 900 cases,the imaging quality was excellent in 780 cases (86.7%),good in 116 cases (12.9%) and poor in 4 cases(0.4%).Conclusion The imaging quality of CR in excellent,to the back processings,it is conveninent in the digital store and longdistance transport.