|Novel Method of Fabricating Individual Trays for Maxillectomy Patients by Computer-Aided Design and Rapid Prototyping|
|Huang, Zhi; Wang, Xin-zhi; Hou, Yue-zhong|
|关键词||Clinical application feasibility impression technique maxillofacial prosthesis|
|刊名||JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY|
|WOS标题词||Science & Technology|
|类目[WOS]||Dentistry, Oral Surgery & Medicine|
|研究领域[WOS]||Dentistry, Oral Surgery & Medicine|
|关键词[WOS]||IMPRESSION MATERIALS ; CUSTOM TRAYS ; STOCK TRAYS ; ACCURACY ; MANUFACTURE ; PROSTHESIS ; ASPIRATION|
PurposeMaking impressions for maxillectomy patients is an essential but difficult task. This study developed a novel method to fabricate individual trays by computer-aided design (CAD) and rapid prototyping (RP) to simplify the process and enhance patient safety.
Materials and MethodsFive unilateral maxillectomy patients were recruited for this study. For each patient, a computed tomography (CT) scan was taken. Based on the 3D surface reconstruction of the target area, an individual tray was manufactured by CAD/RP. With a conventional custom tray as control, two final impressions were made using the different types of tray for each patient. The trays were sectioned, and in each section the thickness of the material was measured at six evenly distributed points. Descriptive statistics and paired t-test were used to examine the difference of the impression thickness. SAS 9.3 was applied in the statistical analysis. Afterwards, all casts were then optically 3D scanned and compared digitally to evaluate the feasibility of this method.
ResultsImpressions of all five maxillectomy patients were successfully made with individual trays fabricated by CAD/RP and traditional trays. The descriptive statistics of impression thickness measurement showed slightly more uneven results in the traditional trays, but no statistical significance was shown. A 3D digital comparison showed acceptable discrepancies within 1 mm in the majority of cast areas. The largest difference of 3 mm was observed in the buccal wall of the defective areas. Moderate deviations of 1 to 2 mm were detected in the buccal and labial vestibular groove areas.
ConclusionsThis study confirmed the feasibility of a novel method of fabricating individual trays by CAD/RP. Impressions made by individual trays manufactured using CAD/RP had a uniform thickness, with an acceptable level of accuracy compared to those made through conventional processes.
|作者单位||Peking Univ, Dept Prosthodont, Sch & Hosp Stomatol, Beijing 100081, Peoples R China|
|Huang, Zhi,Wang, Xin-zhi,Hou, Yue-zhong. Novel Method of Fabricating Individual Trays for Maxillectomy Patients by Computer-Aided Design and Rapid Prototyping[J]. JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY,2015,24(2):115-120.|
|APA||Huang, Zhi,Wang, Xin-zhi,&Hou, Yue-zhong.(2015).Novel Method of Fabricating Individual Trays for Maxillectomy Patients by Computer-Aided Design and Rapid Prototyping.JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY,24(2),115-120.|
|MLA||Huang, Zhi,et al."Novel Method of Fabricating Individual Trays for Maxillectomy Patients by Computer-Aided Design and Rapid Prototyping".JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY 24.2(2015):115-120.|