Reconstruction of the maxilla following hemimaxillectomy defects with scapular tip grafts and dental implants. 2016

Christian Mertens, and Christian Freudlsperger, and Jens Bodem, and Michael Engel, and Jürgen Hoffmann, and Kolja Freier
Department of Oral- and Cranio-Maxillofacial Surgery, Heidelberg University Hospital, Heidelberg, Germany. Electronic address: christian.mertens@med.uni-heidelberg.de.

BACKGROUND Treatment of post-resective defects of the maxilla can be challenging and usually requires dental obturation or microvascular reconstruction. As compared to soft-tissue microvascular grafts, bone reconstruction can additionally allow for facial support and retention of dental implants. The aim of this study was to evaluate scapular tip grafts with respect to their applicability for maxillary reconstruction and their potential to retain dental implants for later dental rehabilitation. METHODS In this retrospective study, 14 patients with hemimaxillectomy defects were reconstructed with free scapular tip grafts, oriented horizontally, to rebuild the palate and alveolar ridge. After bone healing, three-dimensional virtual implant planning was performed, and a radiographic guide was fabricated to enable implant placement in the optimal anatomic and prosthetic position. All patients' mastication and speech were evaluated, along with the extent of defect closure, suitability of the graft sites for implant placement, and soft-tissue stability. Pre- and postsurgical radiographs were also evaluated. RESULTS A good postoperative outcome was achieved in all patients, with complete closure of maxillary defects that were class II, according to the system of Brown and Shaw. Additional bone augmentation was necessary in two patients in order to increase vertical bone height. Patients were subsequently treated with 50 dental implants to retain dental prostheses. In all cases, additional soft-tissue surgery was necessary to achieve a long-term stable periimplant situation. No implants were lost during the mean observation period of 34 months. CONCLUSIONS Due to its specific form, the scapular tip graft is well suited to reconstruct the palate and maxillary alveolar ridge and to enable subsequent implant-retained rehabilitation. Due to the limited bone volume, an accurate three-dimensional graft orientation is essential. Furthermore, most cases require additional soft-tissue surgery to achieve a long-term stable periimplant situation.

UI MeSH Term Description Entries
D008297 Male Males
D008437 Maxilla One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS. Maxillae,Maxillary Bone,Bone, Maxillary,Bones, Maxillary,Maxillary Bones,Maxillas
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003758 Dental Implantation, Endosseous Insertion of an implant into the bone of the mandible or maxilla. The implant has an exposed head which protrudes through the mucosa and is a prosthodontic abutment. Dental Implantation, Osseointegrated,Endosseous Dental Implant Therapy,Endosseous Implantation,Osseointegrated Dental Implantation,Endosseous Dental Implantation,Implantation, Endosseous,Implantation, Endosseous Dental,Implantation, Osseointegrated Dental
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old
D000540 Alveolar Ridge Augmentation Preprosthetic surgery involving rib, cartilage, or iliac crest bone grafts, usually autologous, or synthetic implants for rebuilding the alveolar ridge. Mandibular Ridge Augmentation,Maxillary Ridge Augmentation,Alveolar Ridge Augmentations,Augmentation, Alveolar Ridge,Augmentation, Mandibular Ridge,Augmentation, Maxillary Ridge,Augmentations, Alveolar Ridge,Augmentations, Mandibular Ridge,Augmentations, Maxillary Ridge,Mandibular Ridge Augmentations,Maxillary Ridge Augmentations,Ridge Augmentation, Alveolar,Ridge Augmentation, Mandibular,Ridge Augmentation, Maxillary,Ridge Augmentations, Alveolar,Ridge Augmentations, Mandibular,Ridge Augmentations, Maxillary

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