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Maxillary reconstruction

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https://www.readbyqxmd.com/read/28653228/enlargement-of-the-infraorbital-canal-following-caldwell-luc-surgery
#1
Hideyuki Fukui, Nobuo Kashiwagi, Takamichi Murakami, Yoshiyuki Watanabe, Tomoko Hyodo, Kazunari Ishi, Miho Yamakawa, Hirito Takahashi, Noriyuki Tomiyama
OBJECTIVES: The infraorbital canal (IOC), which runs in the roof of the maxillary sinus, is a useful anatomical landmark for the infraorbital nerve (ION) on computed tomography (CT) images. Enlargement of the IOC on CT images is thought to be a pathological state that usually affects the ION. However, we have frequently observed enlargement of the IOC in patients with a history of radical surgery of the maxillary sinus: so-called Caldwell-Luc (CL) surgery. In this study, the size of the IOC of the maxillary sinus was compared between patients with a history of CL surgery (post-CL IOCs) and those with no history of CL surgery (control IOCs)...
June 26, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28639070/osseous-cartilaginous-spreader-graft-and-nasal-framework-reconstruction
#2
Safvet Ors
Revision rhinoplasties and saddle nose deformities usually require grafting for reconstruction. Between January 1, 2000, and January 1, 2017, autologous rib grafts were used in 127 secondary and tertiary rhinoplasty patients [(57/127 females) and (70/127 males)]. Osseous-cartilaginous rib grafts (OCRGs) were divided into three parts (i.e., 1/3 upper peripheral, 1/3 central, and 1/3 lower peripheral). The harvested OCRGs were also shaped as vertical strips using a number 11 scalpel blade. These OCRGs were shaped to form the L-strut cartilaginous graft (LSCGs), osseous-cartilaginous spreader grafts (OCSGs), osseous-cartilaginous onlay grafts, nasal valve grafts (NVGs), and lower lateral cartilaginous grafts (LLCGs)...
June 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28632456/effect-of-carbon-dioxide-laser-on-increasing-vestibular-depth-in-cleft-lip-and-palate-patients
#3
Sogra Yassaei, Hossein Aghili, Alireza Navab Azam, Mahjobeh Gholdani Moghadam, Isa Safari
BACKGROUND: Shallow upper buccal sulcus deformity in cleft lip and palate patients is one of the common secondary deformities after primary cleft lip and palate repair; this deformity may prevent or complicate orthodontic and prosthodontic procedures causing aesthetic and functional problems. A number of methods are described to increase the anterior maxillary sulcus in these patients. PURPOSE: This study assessed the use of a carbon dioxide laser (CO2) to increase the sulcus depth...
June 20, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28628161/-detection-and-management-of-the-vascular-paths-in-the-lateral-sinus-wall-using-cone-beam-computed-tomography
#4
(no author information available yet)
OBJECTIVE: To detect the vascular paths in the lateral wall of maxillary sinus using cone beam computer tomography (CBCT), and to retrospect the surgical managements of avoiding bleeding complication during the lateral approach maxillary sinus elevation. METHODS: The documents of 71 consecutive patients with 81 sides maxillary sinus elevation surgery were collected. The vascular paths in the lateral wall of maxillary sinus were detected by the preoperative CBCT, and the messages about the vascular in surgical records were analyzed...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28623681/soft-tissue-changes-measured-with-three-dimensional-software-provides-new-insights-for-surgical-predictions
#5
Yu-Jen Chang, Antônio C O Ruellas, Marilia S Yatabe, Philip M Westgate, Lucia H S Cevidanes, Sarandeep S Huja
PURPOSE: Although computer-aided craniofacial reconstructions allows for simulation of hard tissue changes, the prediction of the final soft tissue facial changes remains a challenge. The purpose of the present study was to evaluate the 3-dimensional (3D) soft tissue changes in patients undergoing 2-jaw orthognathic surgery. PATIENTS AND METHODS: For the present retrospective cohort study, 40 consecutive patients (11 men and 29 women; mean age 23.5 ± 4.9 years) who had undergone 2-jaw orthognathic surgery were selected...
May 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28621462/evidence-for-convergent-evolution-of-a-neocortex-like-structure-in-a-late-permian-therapsid
#6
Michael Laaß, Anders Kaestner
The special sensory, motor, and cognitive capabilities of mammals mainly depend upon the neocortex, which is the six-layered cover of the mammalian forebrain. The origin of the neocortex is still controversial and the current view is that larger brains with neocortex first evolved in late Triassic Mammaliaformes. Here, we report the earliest evidence of a structure analogous to the mammalian neocortex in a forerunner of mammals, the fossorial anomodont Kawingasaurus fossilis from the late Permian of Tanzania...
June 16, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28599124/three-dimensional-reconstruction-of-post-traumatic-deficient-anterior-maxilla
#7
Adi Rachmiel, Dekel Shilo, Dror Aizenbud, Mark Pen, Dana Rachmiel, Omri Emodi
PURPOSE: Maxillary retrognathism appears in 14.3% of patients exhibiting malocclusion after trauma treatment. This report describes the application of alveolar distraction osteogenesis (ADO) for treating the severely deficient anterior maxilla after trauma injuries in the vertical and anteroposterior planes. MATERIALS AND METHODS: This is a retrospective study of patients exhibiting severe vertical and anteroposterior maxillary bone deficiency after trauma injuries and treated by ADO as a first stage with additional Le Fort I advancement when required...
May 15, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28583492/silent-sinus-syndrome-and-maxillary-sinus-atelectasis-in-children
#8
Paolo Farneti, Vittorio Sciarretta, Giovanni Macrì, Ottavio Piccin, Ernesto Pasquini
OBJECTIVE: Silent sinus syndrome (SSS) and chronic maxillary atelectasis (CMA) are unusual conditions having subtle symptoms with a possible progressive evolution. They are particularly infrequent in the pediatric population. Our objective was to review our experience with pediatric patients having SSS or CMA, and to review all cases involving patients under 14 years of age reported in the literature. METHODS: A retrospective review of 6 patients diagnosed with SSS or CMA surgically treated from 2001 to 2014 was carried out...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28582957/a-case-of-organizing-hematoma-in-a-maxillary-sinus-after-reconstruction-of-a-blow-out-fracture
#9
Sang Hee An, Hyoung Min Park, Il Gyu Kang, Joo Hyun Jung
A 36-year-old man presented because of nasal obstruction, rhinorrhea, and postnasal drip. The patient had undergone reconstruction of a blow-out fracture of the orbital floor 12 years before and had sinusitis that likely had resulted from implant migration into the maxillary sinus. The inflammation was successfully resolved, and the implant was removed through a minimally invasive endoscopic sinus surgery technique. On pathologic examination, an organizing hematoma was identified as the cause of the lesion...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28573375/chronic-maxillary-atelectasis-and-silent-sinus-syndrome-two-faces-of-the-same-clinical-entity
#10
Clotilde de Dorlodot, Stephanie Collet, Philippe Rombaux, Mihaela Horoi, Sergio Hassid, Philippe Eloy
Chronic maxillary atelectasis (CMA) and silent sinus syndrome (SSS) are rare clinical entities characterized by an implosion of the maxillary sinus that may or may not be associated with sinonasal symptoms, and are complicated by ipsilateral enophthalmos. The objective of this article is to discuss the definitions, physiopathology, clinical and radiographic characteristics, and surgical management of these entities. We retrospectively reviewed 18 patients (7 women, 11 men, aged 12-70 years) diagnosed and treated in the ear, nose, and throat departments of four Belgian teaching hospitals between 2000 and 2015...
June 1, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28570410/nasal-soft-tissue-change-following-bimaxillary-orthognathic-surgery
#11
Hye-In Jeong, Ho-Sung Lee, Young-Soo Jung, Hyung-Sik Park, Hwi-Dong Jung
OBJECTIVE: The purpose of this study is to identify the correlation between maxillary movement and nasal soft tissue changes on three-dimensional reconstructed cone beam computed tomography (CBCT) images after Le Fort I osteotomy. MATERIALS AND METHODS: The authors also investigate the long-term change of alar base width (ABW) to determine the effect of cinch suture. The authors retrospectively studied 52 subjects (14 males and 38 females) who were treated by bimaxillary orthognathic surgery including Le Fort I osteotomy and mandibular ramus surgery...
May 31, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28560842/three-dimensional-stereophotogrammetric-analysis-of-50-smiles-a-study-of-dento-facial-proportions
#12
R Ceinos, L Lupi, A Tellier, M F Bertrand
OBJECTIVES: The purpose of this study was to analyze 50 smiles using 3D stereophotogrammetry (3D-spg)-based facial reconstruction, to calculate ratios involving measurements of the distances between dental and facial landmarks and to compare these ratios with the golden ratio φ (1.618). MATERIALS AND METHODS: Fifty subjects with no obvious malocclusion participated in this study. For each subject, 4 photographs were acquired using the LifeViz Mini™, an absolute calibration 3D-spg system...
May 31, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28560816/scan-layered-reconstructions-a-pilot-study-of-a-nondestructive-dental-histoanatomical-analysis-method-and-digital-workflow-to-create-restorations-driven-by-natural-dentin-and-enamel-morphology
#13
João Malta Barbosa, Nick Tovar, Pablo A Tuesta, Ronaldo Hirata, Nuno Guimarães, José C Romanini, Marjan Moghadam, Paulo G Coelho, Leila Jahangiri
OBJECTIVE: This work aims to present a pilot study of a non-destructive dental histo-anatomical analysis technique as well as to push the boundaries of the presently available restorative workflows for the fabrication of highly customized ceramic restorations. MATERIALS AND METHODS: An extracted human maxillary central incisor was subject to a micro computed tomography scan and the acquired data was transferred into a workstation, reconstructed, segmented, evaluated and later imported into a Computer-Aided Design/Computer-Aided Manufacturing software for the fabrication of a ceramic resin-bonded prosthesis...
May 31, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28529045/influence-of-preoperative-imaging-on-fibula-free-flap-harvesting
#14
R Gryseleyn, M Schlund, P Pigache, T Wojcik, G Raoul, J Ferri
INTRODUCTION: The fibula free flap (FFF) is the gold standard for the reconstruction of large maxillofacial defects. Magnetic resonance angiography (MRA) seems to supersede digital subtraction angiography (DSA) as the reference in preoperative evaluation, being non-invasive and having equivalent diagnostic results. The aim of this study was to assess the impact of preoperative MRA versus DSA on the viability of FFF and its success rate. MATERIAL AND METHODS: A total of 216 patients, who underwent mandibular or maxillary FFF reconstruction from January 1995 to January 2011, were retrospectively included in the study...
May 18, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28507870/intraoperative-change-in-defect-size-during-maxillary-reconstruction-using-surgical-guides-created-by-cad-cam
#15
Daiki Morita, Toshiaki Numajiri, Hiroko Nakamura, Shoko Tsujiko, Yoshihiro Sowa, Makoto Yasuda, Shigeru Hirano
Surgical osteotomy guides created by computer-aided design/computer-aided manufacturing (CAD/CAM) have been developed and are now widely used in maxillofacial reconstruction. However, there are no standard procedures for dealing with an intraoperative change in defect size. We report on a case in which we used our CAD/CAM guides to deal with an intraoperative change in defect size in a maxillary reconstruction. We planned the maxillary reconstruction using a free fibula flap because of left maxillary sinus cancer in a 73-year-old man...
April 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28497678/eosinophil-fungal-rhinosinusitis-caused-by-fusarium-infection-secondary-to-odontogenic-maxillary-sinus-disease-when-collaboration-between-otolaryngologist-and-allergologist-leads-to-the-correct-diagnosis-and-therapy
#16
P Gamba, C Lombardi
Rhinitis and sinusitis usually coexist and are concurrent in most individuals; thus, the correct terminology is now "rhinosinusitis". On the basis of numerous causative factors, often co-existing in the same patient, the diagnosis of rhinosinusitis is also made by a wide variety of practitioners (allergologists, otolaryngologists, pulmonologists, primary care physicians, paediatricians, and many others). Approximately 5-15% of the population suffers from chronic rhinosinusitis, and in 10-12% of them, it is of dental origin...
May 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28496391/management-of-panfacial-fracture
#17
REVIEW
Kausar Ali, Salvatore C Lettieri
Traumatic panfacial fracture repair is one of the most complex and challenging reconstructive procedures to perform. Several principles permeate throughout literature regarding the repair of panfacial injuries in a stepwise fashion. The primary goal of management in most of these approaches is to restore the occlusal relationship at the beginning of sequential repair so that other structures can fall into alignment. Through proper positioning of the occlusion and the mandibular-maxillary unit with the skull base, the spatial relationships and stability of midface buttresses and pillars can then be re-established...
May 2017: Seminars in Plastic Surgery
https://www.readbyqxmd.com/read/28492743/presence-of-cells-in-fresh-frozen-allogeneic-bone-grafts-from-different-tissue-banks
#18
Libério França Coutinho, Juliano Batista do Amaral, Érico Brito Dos Santos, Elizabeth Ferreira Martinez, Victor Angelo M Montalli, José Luiz Cintra Junqueira, Vera Cavalcanti de Araújo, Marcelo Henrique Napimoga
Bone replacement materials have been widely used to reconstruct atrophic jawbones. Based on previous reports demonstrating the presence of viable cells in bone blocks even after processing by musculoskeletal tissue banks for orthopedic use, the aim of this study was to evaluate the presence of cells in bone blocks from three Brazilian tissue banks for maxillary reconstructions. All samples were processed by the respective tissue banks, according to the guidelines of the Brazilian National Sanitary Surveillance Agency...
March 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28486354/minimally-invasive-approach-based-on-pterygoid-and-short-implants-for-rehabilitation-of-an-extremely-atrophic-maxilla-case-report
#19
Alessandro Cucchi, Elisabetta Vignudelli, Simonetta Franco, Giuseppe Corinaldesi
INTRODUCTION: Extremely atrophic maxillae can be considered the most important indication for three-dimensional maxillary reconstruction. Different bone-augmentation techniques have been suggested to accomplish this. This article illustrates a minimally invasive approach to rehabilitation of the extremely atrophic maxilla. MATERIAL AND METHODS: A 63-year-old male patient was referred for restoration of his totally edentulous maxilla with a fixed full-arch implant-prosthetic rehabilitation...
May 8, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28473930/full-mouth-reconstruction-of-a-skeletal-class-ii-division-1-patient-with-adenoid-cystic-carcinoma-using-an-interim-immediate-obturator-and-a-definitive-obturator
#20
Mehran Bahrami, Seyed Mehran Falahchai
A 61-year-old female patient with adenoid cystic carcinoma (ACC) of the right maxilla and Angle class II division 1 malocclusion had received a subtotal maxillectomy in right side and used a conventional clasp-retained obturator. After implants placement, a maxillary interim immediate obturator (IIO) and then a definitive obturator using six endosseous implants were fabricated. During one-year follow-up, the patient was completely satisfied. Ideally, after implants placement in edentulous patients suffering from hemimaxillectomy, an implant-supported obturator (ISO) is designed in order to prevent nasal reflux and to improve speech and swallowing...
2017: Case Reports in Dentistry
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