Research Of Cone Beam CT Applied In Maxillary Cystic Disease

Objective Cystic lesions of the jaw is a kind of oral and maxillofacial diseases that are common in clinical practice, refers to the jaw cyst and cystic that showed lesion of tumor imaging.These diseases can cause destruction of the mandible, seriously affect the patient’s physical and mental health. Due to the limitation of the traditional radiographic examination, formulate preoperative preparationand operation scheme causes great distress for clinicians.While the images of CBCT could be more accurate than the traditional images.The purpose of this study is based on the analysis of the CBCT image data for clinical practice of cystic lesions of the jaw, to investigate the application value of CBCT in maxillary cystic disease.Methods The images of CBCT about jaw cystic disease were collected from 56 cases. Then we apply the CBCT to measure the antero-posterior diameter,the vertical diameter and the transverse diameter, comparising with the real value measured in surgery.Then we evaluate the accuracy of CBCT with SPSS16.0 for statistical analysis and the relevance between the dates collected from CBCT and the symptoms before and after the operation.Results 56 subjects with female 27 cases, male 29 cases. The age span is 16 to 61 years old, and the average age is 35 years old. We found that 37 cases of mandible is located in the mandible,while the other 19 cases are located in the maxilla.The postoperative results combined with clinical examination and pathological diagnosis, we found 4 cases of nasopalatine cyst, 19 cases of periapical cyst, 18 cases of dentigerous cyst, 15 cases of keratocystic odontogenic tumor.The diagnosis results of imaging consistent with pathological results. We also found that 1 cases is with teeth or teeth of theembryo, 23 cases is with root resorption, 45 cases is with lesions involving the mandibular nerve tube, maxillary sinus, nasal floor and other important structures in jaw. Symptoms of swelling and pain occurred in 7 cases and 9 cases had postoperative complications such as infection, fistula, postoperative local abnormal sensation. It has no obvious difference between the dates collected from CBCT and the real value measured in surgery(P>0.05).There was no statistical significance compared with the volume of jaw cystic disease and the symptoms before operation(P>0.05).But compared with the symptoms after the operation,the difference have statistical significance(P<0.05).Conclusion CBCT brings a revolutionary progress to oral and maxillofacial radiology, it changed the traditional oral and maxillofacial radiology equipment can only offer 2D image to a great extent, you can display three-dimensional information of jaw defect information, It also brings a great progress for the diagnosis and treatment of maxillofacial bone defect lesions.At present, oral and maxillofacial cone beam CT have been applied in the diagnosis and treatment of oral and maxillofacial diseases, for maxillary defect for the characteristics of the disease.CBCT can clearly display the lesion site, scope, the lesion and surrounding anatomical structures such as the relation of the maxillary sinus,incisive canal, mandibular nerve tube,especially for showing the pathologic changes of bone and jaw lesions within the buccal lingual expansion or destruction.It has an important guiding significance for disease diagnosis, treatment design and postoperative follow-up.