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maxillofacial implants

Y Klazen, F Van der Cruyssen, M Vranckx, M Van Vlierberghe, C Politis, T Renton, R Jacobs
With the growing demand for dental work, trigeminal nerve injuries are increasingly common. This retrospective cohort study examined 53 cases of iatrogenic trigeminal nerve injury seen at the Department of Oral and Maxillofacial Surgery, University Hospitals of Leuven between 2013 and 2014 (0.6% among 8845 new patient visits). Patient records were screened for post-traumatic trigeminal nerve neuropathy caused by nerve injury incurred during implant surgery, endodontic treatment, local anaesthesia, tooth extraction, or specifically third molar removal...
March 6, 2018: International Journal of Oral and Maxillofacial Surgery
Yiqiang Yu, Hua Lu, Jiao Sun
Magnesium (Mg) based materials are the focus of research for use as degradable materials in orthopedics and cranio-maxillofacial surgery. However, corrosion rate control and biosecurity are still the key questions that need solving prior to their clinical applications. In the present study, as-rolled high-purity magnesium (HP Mg, 99.99 wt.%) screws were implanted in rabbit tibiae for over 52 weeks in order to investigate their long-term in vivo evolution and the local and systemic effects of their degradation products...
March 2, 2018: Acta Biomaterialia
Hamid Neshandar Asli, Zahra Dalili Kajan, Fatemeh Gholizade
STATEMENT OF PROBLEM: Cement-retained implant-supported restorations have advantages over screw-retained restorations but are difficult to retrieve. Identifying the approximate location of the screw access hole (SAH) may reduce damage to the prosthesis. PURPOSE: The purpose of this in vitro study was to evaluate the ability of cone beam computed tomography (CBCT) imaging to determine the location and direction of SAHs in cement-retained implant prostheses. MATERIAL AND METHODS: Five clear acrylic resin casts were made based on a mandibular model...
February 21, 2018: Journal of Prosthetic Dentistry
Ho-Beom Kwon, Young-Seok Park, Jung-Suk Han
Augmentation reality technology offers virtual information in addition to that of the real environment and thus opens new possibilities in various fields. The medical applications of augmentation reality are generally concentrated on surgery types, including neurosurgery, laparoscopic surgery and plastic surgery. Augmentation reality technology is also widely used in medical education and training. In dentistry, oral and maxillofacial surgery is the primary area of use, where dental implant placement and orthognathic surgery are the most frequent applications...
February 21, 2018: Acta Odontologica Scandinavica
Neil Bodagh, Elena Pappa, Fahad Farooqi
We report an unusual case of an elderly man presenting with a fast-growing large malignant tumour involving the skin overlying his permanent pacemaker site. The fast-growing cutaneous squamous cell carcinoma appeared 2 years after pacemaker implantation. Joint specialist input was required to tackle this complex problem as a wide surgical excision would expose the pacemaker generator risking device infection particularly if the skin graft reconstruction failed. Having established that the patient had minimal pacing needs, it was determined through expedited multidisciplinary discussion that the best option was excision of the lesion with skin grafting of the defect by maxillofacial surgical team and pacemaker generator removal by a cardiologist in a joint surgical procedure...
February 6, 2018: BMJ Case Reports
Ji-Hyeon Oh
With the development of computer-aided design/computer-aided manufacturing (CAD/CAM) technology, it has been possible to reconstruct the cranio-maxillofacial defect with more accurate preoperative planning, precise patient-specific implants (PSIs), and shorter operation times. The manufacturing processes include subtractive manufacturing and additive manufacturing and should be selected in consideration of the material type, available technology, post-processing, accuracy, lead time, properties, and surface quality...
December 2018: Maxillofacial Plastic and Reconstructive Surgery
Andrea Torroni, Chongchen Xiang, Lukasz Witek, Eduardo D Rodriguez, Roberto L Flores, Nikhil Gupta, Paulo G Coelho
WE43 Mg alloy, composed of Mg, Yttrium, Rare Earth elements, and Zirconium, has proved to be a suitable candidate for production of resorbable osteosynthesis implants in both clinical and experimental settings. In a previous study we tested biocompatibility and degradation properties of untreated (as-cast) and artificially aged (T-5) WE43 Mg-alloys as subperiosteal implants on a maxillofacial sheep model. Both the alloy compositions showed excellent biocompatibility, however, with respect to degradation rate, the as-cast form showed increased degradability compared with the T-5...
January 4, 2018: Journal of Cranio-maxillo-facial Surgery
Pratik Shah, B S Chong
The adoption and adaptation of recent advances in digital technology, such as three-dimensional (3D) printed objects and haptic simulators, in dentistry have influenced teaching and/or management of cases involving implant, craniofacial, maxillofacial, orthognathic and periodontal treatments. 3D printed models and guides may help operators plan and tackle complicated non-surgical and surgical endodontic treatment and may aid skill acquisition. Haptic simulators may assist in the development of competency in endodontic procedures through the acquisition of psycho-motor skills...
January 12, 2018: Clinical Oral Investigations
Hélène Martin Thomé, David Bourdin, Nicolas Strube, Afchine Saffarzadeh, Jean-Francois Morlock, Guillaume Campard, Charles Evanno, Alain Hoornaert, Pierre Layrolle
For the regeneration of small osseous defects, dental membranes are commonly used in oral and maxillofacial surgery. A new synthetic resorbable membrane has recently demonstrated its biocompatibility and bone regeneration capacity in preclinical studies. This membrane is made of poly-D,L-lactic/glycolic acid 85/15 (PLGA), has a bi-layered structure with a dense film to prevent gingival epithelial cell invasion and a micro-fibrous layer to support osteogenic cells and bone healing. This membrane completely degrades by hydrolysis in 4 to 6 months without signs of inflammation...
January 5, 2018: Journal of Oral Implantology
G Gastaldi, L Palumbo, C Moreschi, E F Gherlone, P Capparé
Introduction: The aim of this study is to determine the outcome of maxillofacial prosthetic rehabilitation after oncological resections, including both intra- and extra-oral prosthetic devices. Methods: In this study were included 72 patients, who have undergone an intra or extra-oral maxillofacial prosthetic rehabilitation after an oncologic resection. Tumors on the head and neck were analyzed and the defects of these resections have been divided in two different groups: intra and extra-oral defects...
July 2017: Oral & Implantology
B Saravanan, P Jayavelu, R Riaz, A R Tariqsalam
Diagnostic imaging acts as a distinctive method in analyzing and drawing in the appropriate treatment protocol for any procedure. Pertaining to immediate implant placement, determining the bone width and height plays a vital role in the success of the implant therapy. This visualization of the measurements done preoperatively will enhance the treatment by reducing the overall time span of the procedure. Currently, cone beam computed tomography (CBCT) plays a significant role in the preoperative determination of the measurements of the tooth and the bone...
November 2017: Journal of Pharmacy & Bioallied Sciences
Ali Z Syed, Anna Hawkins, Leela Subashini Alluri, Buthainah Jadallah, Kiran Shahid, Michael Landers, Hussein M Assaf
Soft tissue calcification is a pathological condition in which calcium and phosphate salts are deposited in the soft tissue organic matrix. This study presents an unusual calcification noted in the cartilaginous portion of the Eustachian tube. A 67-year-old woman presented for dental treatment, specifically for implant placement, and cone-beam computed tomography (CBCT) was performed. The CBCT scan was reviewed by a board-certified oral and maxillofacial radiologist and revealed incidental findings of 2 distinct calcifications in the cartilaginous portion of the Eustachian tube...
December 2017: Imaging Science in Dentistry
Trbakovic Amela, Hedenqvist Patricia, Mellgren Torbjörn, Ley Cecilia, Hilborn Jöns, Ossipov Dmitri, Ekman Stina, Johansson B Carina, Waern-Jensen Marianne, Thor Andreas
OBJECTIVES: The aim of this study was to investigate if a synthetic granular calcium phosphate compound (CPC) and a composite bisphosphonate-linked hyaluronic acid-calcium phosphate hydrogel (HABP·CaP) induced similar or more amount of bone as bovine mineral in a modified sinus lift rabbit model. MATERIAL AND METHODS: Eighteen adult male New Zeeland White rabbits, received randomly one of the two test materials on a random side of the face, and bovine mineral as control on the contralateral side...
December 16, 2017: Journal of Dentistry
George Michelinakis
This case report presents an alternative method for fabricating an obturator for patients that develop xerostomia and mild trismus following radiation to the Head and Neck region. Multiple initial impression stages are avoided leading to less irritation to soft tissues and less discomfort to the patient. A 69-year-old male patient was referred to our dental practice by the Maxillofacial Surgery Department of the local General Hospital. The patient had undergone a right maxillectomy for removal of a Squamous Cell Carcinoma 2 weeks prior...
October 2017: Journal of Indian Prosthodontic Society
E Brauner, A Quarato, F De Angelis, G Pompa, S Jamshir, V Valentini, S Di Carlo
INTRODUCTION: Osteosarcoma is an aggressive primary bone tumor composed of connective tissue cells directly producing osteoid and bone. Prosthetic rehabilitations in post-oncological patients after bone reconstruction are not substantially different than those of patients affected by severe atrophy of upper or lower jaw after bone reconstruction. The treatment for patients with a malignant neoplasia of the oral cavity requires multidisciplinary approach by a team of different specialists that follow the patient through the phases of diagnosis, therapy and oral rehabilitation...
November 2017: La Clinica Terapeutica
Jitka Levorova, Jaroslava Duskova, Milan Drahos, Radka Vrbova, D Vojtech, Jiri Kubasek, Martin Bartos, Lenka Dugova, Dan Ulmann, Rene Foltan
Introduction A standard osteosynthetic material for maxillofacial skeleton is titanium and its alloys. The convenience of degradable material is avoiding of second surgery in cases, where removal of the material is necessary. Magnesium biodegradable alloys have similar mechanic properties as cortical bone - reasonable corrosion and sufficient biologic properties. They might be used in facial skeleton fixation. Materials and methods The study included a total of 16 rabbits, and they were randomly divided into two groups...
February 2018: Journal of Biomaterials Applications
Thanh H Thai, Thongchai Nuntanaranont, Suttatip Kamolmatyakul, Jirut Meesane
This study aimed to carry out in vivo testing of the formation of new bone by modified silk fibroin scaffolds with a mimicked microenvironment of fibronectin/decellularized pulp in bone defects. Silk fibroin scaffolds were fabricated into three-dimensional scaffolds before being coated with fibronectin/decellularized pulp. The coated scaffolds were implanted into rabbits. Twenty-four bicortical calvarial defects in 12 rabbits were divided randomly into two groups: non-coated and coated silk fibroin scaffolds...
November 22, 2017: Biomedical Materials
B Marlier, J-C Kleiber, M Bannwarth, E Theret, C Eap, C F Litre
INTRODUCTION: We describe our experience of cranioplasty after a calvarial defect, following an external decompressive craniectomy, with the Medpor® (Stryker® ) porous polyethylene implant for cosmetic cranioplasty and reconstruction. METHODS: A retrospective chart review was performed on 23 consecutive patients who underwent cranioplasty at a single institution between January 2013 and January 2016: 9 patients after head injury and 14 patients after vascular event (ruptured aneurysm, intraprenchymal haematoma, malignant cerebrovascular accident)...
December 2017: Neuro-Chirurgie
Ana Lucia Carpi Miceli, Livia Costa Pereira, Thiago da Silva Torres, Mônica Diuana Calasans-Maia, Rafael Seabra Louro
Autogenous bone grafts are the gold standard for reconstruction of atrophic jaws, pseudoarthroses, alveolar clefts, orthognathic surgery, mandibular discontinuity, and augmentation of sinus maxillary. Bone graft can be harvested from iliac bone, calvarium, tibial bone, rib, and intraoral bone. Proximal tibia is a common donor site with few reported problems compared with other sites. The aim of this study was to evaluate the use of proximal tibia as a donor area for maxillofacial reconstructions, focusing on quantifying the volume of cancellous graft harvested by a lateral approach and to assess the complications of this technique...
December 2017: Craniomaxillofacial Trauma & Reconstruction
Wellington Luiz de Oliveira da Rosa, Tiago Machado da Silva, Adriana Fernandes da Silva, Evandro Piva
BACKGROUND: The use of bioactive proteins, such as rhBMP-2, may improve bone regeneration in oral and maxillofacial surgery. PURPOSE: Analyze the effect of using bioactive proteins for bone regeneration in implant-based rehabilitation. MATERIALS AND METHODS: Seven databases were screened. Only clinical trials that evaluated the use of heterologous sources of bioactive proteins for bone formation prior to implant-based rehabilitation were included...
November 6, 2017: Clinical Implant Dentistry and related Research
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