Rehabilitation by hollow obturator prosthesis immediately after total maxillectomy for malignant tumor / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>The feasibility and clinical effects of hollow obturator prosthesis for the repair of maxillofacial defect immediately after maxillectomy for cancer were assessed.</p><p><b>METHODS</b>Thirteen patients with T3-4aN0M0 maxillary neoplasm were treated by the prostheses immediately after maxillectomy. According to the 3D-CT reconstruction of nasal sinus, the 3D stereoscopic prototype was constructed before the surgery. Simulating surgery with Surgicare 5.0 software and then the prosthesis 3D stereoscopic model was shaped. The prosthesis was made quickly and precisely with methacrylate resins according to the model and the print mold before surgery, with supplementary tooth at the bottom of prosthesis. In the surgery, the prosthesis was installed instantly after maxillectomy. The patients were followed up at 1, 3 and 6 month after the surgery, respectively. The facial features and the pronunciation clarity were examined and the questionnaires were carried out in the patients, with comparation by paired t-test. The hollow obturator prosthesis would be replaced by permanent prosthesis made of methacrylate resins at 6 month after the surgery.</p><p><b>RESULTS</b>The hollow obturator prostheses were installed accurately and maxillofacial defects were repaired immediately after maxillectomy in the 13 patients. Postoperative follow-up showed there were significant differences in eyeball sagging (t = 4.67, P < 0.05), mid-facial region collapse (t = 5.67, P < 0.05), and pronunciation clarity (t = 16.38, P < 0.05) between patients with and without prostheses. Questionnaires showed that all the patients were satisfied with the retention of prostheses, the improvement of appearance, the improvement of the symptom of water choking and speech definition. Six months after the surgery, the hollow obturator prostheses were replaced smoothly by permanent prostheses in 11 of the 13 patients.</p><p><b>CONCLUSION</b>The precise and instant repair of maxillofacial defect by prosthesis after maxillectomy can improve survival quality of patient.</p>

Expression and correlation of mast cell, Clusterin/apoJ and transforming growth factor-beta in the different stages of human dermal hemangioma / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the expression and correlation of mast cell, Clusterin/apoJ and transforming growth factor-beta (TGF-beta) in the different stages of human dermal hemangioma.</p><p><b>METHODS</b>Immunohistochemical stain technique (SABC) and toluidine blue (TB) stain technique were respectively used to detect the expression level of Clusterin/apoJ and TGF-beta and the number of mast cells in the different stages of human dermal hemangioma.</p><p><b>RESULTS</b>There was remarkable statistical difference between the advanced stage of proliferative hemangioma and the other stages of proliferative hemangioma in the number of mast cell(P<0.01). There was also remarkable statistical difference between the early stage of involutional hemangioma and the other stages of involutional hemangioma in the number of mast cell (P<0.01). The expression of Clusterin/apoJ and TGF-beta in the advanced stage of proliferative hemangioma was significantly higher than the other stages in proliferative hemangioma (P<0.01). The expression of Clusterin/apoJ and TGF-beta in the early stage of involutional hemangioma was significantly higher than the other stages in involutional hemangioma (P<0.01). There was a significantly positive correlation between Clusterin/apoJ and TGF-beta in the different stages of human dermal hemangioma (P<0.01). The expression level of Clusterin/apoJ and TGF-beta was positively correlated with the number of mast cell in the different stages of human dermal hemangioma (P<0.01).</p><p><b>CONCLUSION</b>Mast cell may play a promotive role of apoptosis during the spontaneous regulate the expression of Clusterin/apoJ and promote the spontaneous involution of human dermal hemangioma.</p>