Abstract：
BACKGROUND:Recently, medical rapid prototyping (MRP) models, fabricated with computer-aided design and computer-aided manufacture (CAD/CAM) techniques, have been applied to reconstructive surgery in the treatment of head and neck cancers. Here, we tested the use of preoperatively manufactured reconstruction plates, which were produced using MRP models. The clinical efficacy and esthetic outcome of using these products in mandibular reconstruction was evaluated. METHODS:A series of 28 patients with malignant oral tumors underwent unilateral segmental resection of the mandible and simultaneous mandibular reconstruction. Twelve patients were treated with prebent reconstruction plates that were molded to MRP mandibular models designed with CAD/CAM techniques and fabricated on a combined powder bed and inkjet head three-dimensional printer. The remaining 16 patients were treated using conventional reconstruction methods. The surgical and esthetic outcomes of the two groups were compared by imaging analysis using post-operative panoramic tomography. RESULTS:The mandibular symmetry in patients receiving the MRP-model-based prebent plates was significantly better than that in patients receiving conventional reconstructive surgery. CONCLUSIONS:Patients with head and neck cancer undergoing reconstructive surgery using a prebent reconstruction plate fabricated according to an MRP mandibular model showed improved mandibular contour compared to patients undergoing conventional mandibular reconstruction. Thus, use of this new technology for mandibular reconstruction results in an improved esthetic outcome with the potential for improved quality of life for patients.
journal_name
Head Face Medjournal_title
Head & face medicineauthors
Azuma M,Yanagawa T,Ishibashi-Kanno N,Uchida F,Ito T,Yamagata K,Hasegawa S,Sasaki K,Adachi K,Tabuchi K,Sekido M,Bukawa Hdoi
10.1186/1746-160X-10-45subject
Has Abstractpub_date
2014-10-23 00:00:00pages
45issn
1746-160Xpii
1746-160X-10-45journal_volume
10pub_type
杂志文章abstract：INTRODUCTION:The aim of this study was to compare the shear bond strength of Biodentine, ProRoot MTA (MTA), glass ionomer cement (GIC) and composite resin (CR) on dentine. METHODS:120 extracted human third molars were embedded in cold-cured-resin and grinned down to the dentine. For each material 30 specimens were pro...
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更新日期：2007-01-15 00:00:00
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