| Objective:The aim of this study is to collect the clinical data of 169 cases of maxillectomy patients, conduct retrospective analysis, make comparison of effects on different methods to restore the mandibular after resection of the clinical, and analyse the effect of radiation therapy and the utilization of prosthesis to the teeth.Method:Retrospectively analysis is conducted based on the data of 169 cases of maxillectomy patient in the Xiangya Hospital, Xiangya Second Hospital and Tumor Hospital of Hunan Province from 2005 to 2010. A telephone investigation is finished based on 66 patients and statistical analysis is done toward different restore methods to restore defects in patients after maxillectomy form, function recovery, and radio therapy.Results:1. Among the 169 cases of maxillary defect,the youngest were 8 years old, and the oldest 76 years old, the average age is 45.6; 95 cases are male and 74 cases are female, thus the ratio of male to female was 1.28:1. Cancer is the most common reason for the defect causes, which accounting for 121 cases (71.6%), benign tumor accounting for 44 cases (26.0%), inflammation accounted for 4 cases (2.4%), trauma 0 case. Malignancies in squamous cell carcinoma accounted for 59 cases (48.8%). While classification by Brown Classification,46 cases areâ… -type,79 cases areâ…¡-type,27 cases areâ…¢-type,17 cases areâ…£-type.52 patients restored by flap 117 cases restored by prosthetic.2.Self-evaluation of profileIn this section, excellent surgical reconstruction group accounted for 12 cases (63.2%), prosthesis excellent group accounted for 33 cases (80.5%), without any restoration of excellent in only 1 case (16.7%)3.Functional evaluationIn the evaluation of speech intelligibility, there are 18 excellent cases in the flap group,accounted for (94.7%); 23 excellent cases in prosthesis group, accounted for (56.1%), only 1 excellent case in the "without any restoration" group,accounted for (16.7%). In the chewing assessment,3 patients are in flap group, accounted for (15.8%), accounted for 16 cases (84.2%),21 cases in superior prosthesis group, accounted for (51.2%), 5 cases in "without any restoration " group, accounted for (83.3%).4.Effects of prosthesis on abutmentProsthetic wear after radiotherapy in patients with tooth mobility rate of 43.8%,in patients without radiotherapy, tooth mobility rate of 23.1%.30 patients received radiotherapy,13 cases occurred in patients with loose teeth or loss (43.3%),36 patients without patients undergoing radiotherapy,7 patients had tooth mobility or loss (19.4%)Conclusion:1. Pathology for patients of maxillectomy pathological is almost with tumors, which accounted for 71.6% of malignant tumors and 26.0% of benign tumors.2. According to Brown Method, the largest number of defects is type-II. Prosthesis restoration is still the main restorative clinic.3. In the restoration of maxillary defect,speech and chewing function has improved significantly after the restoration of tissue valve prosthesis and restore of the facial contour restoration, in which the recovery looks a little better than prosthetic flap; For the voice recovery, mastication is better than prosthetic flap.4. Maxillary defects after radiotherapy in patients with remaining teeth are more likely to loose, off, on the retention of prosthesis has a relatively large impact.
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