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https://www.readbyqxmd.com/read/28642192/applications-of-3d-orbital-computer-assisted-surgery-cas
#1
Paolo Scolozzi
INTRODUCTION: The purpose of the present report is to describe the indications for use of 3D orbital computer-assisted surgery (CAS). PATIENTS AND METHODS: We analyzed the clinical and radiological data of all patients with orbital deformities treated using intra-operative navigation and CAD/CAM techniques at the Hôpitaux Universitaires de Genève, Switzerland, between 2009 and 2016. We recorded age and gender, orbital deformity, technical and surgical procedure and postoperative complications...
June 19, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28642189/how-to-produce-pre-shaped-rigid-arch-bars-using-low-cost-3d-printing-technology-a-technical-note
#2
Charles Druelle, Sandrine Touzet-Roumazeille, Gwénaël Raoul, Joël Ferri, Romain Nicot
Numerous oral and maxillofacial procedures in dentate patients begin with the fixation of occlusions. While several techniques exist to perform mandibulo-maxillary fixation, many surgeons use arch bars in common practice. In cases of severe craniofacial traumas or jaw malformations, such as temporomandibular joint ankylosis, it may be impossible to use rigid arch bars. This technical note reports on the development of a technique to produce pre-shaped rigid arch bars using 3D printing technology. We take the case of a patient who presents Le Fort 1, Le Fort 2 and Le Fort 3 fractures as well as a central palatine disjunction, an angular mandibular fracture and bilateral zygomatic fractures...
June 19, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28603805/stress-and-displacement-patterns-in-the-craniofacial-skeleton-with-rapid-maxillary-expansion-a-finite-element-method-study
#3
J Priyadarshini, C M Mahesh, B S Chandrashekar, Abhishek Sundara, A V Arun, Vinay P Reddy
BACKGROUND: Rapid maxillary expansion (RME), indicated in the treatment of maxillary deficiency directs high forces to maxillary basal bone and to other adjacent skeletal bones. The aim of this study is to (i) evaluate stress distribution along craniofacial sutures and (ii) study the displacement of various craniofacial structures with rapid maxillary expansion therapy by using a Finite Element model. METHODS: An analytical model was developed from a dried human skull of a 12 year old male...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28595841/an-atypical-variant-of-superolateral-dislocation-of-the-mandibular-condyle-a-case-report
#4
Kapil Malik, Subhas C Debnath, Apurba K Adhyapok, Kriti Hazarika
Dislocation of the mandibular condyle from the glenoid fossa can occur in anterior, posterior, lateral, and superior directions. Posterior, lateral, and superior dislocations are rare. Superolateral dislocation is seldom encountered in clinical practice. It is generally associated with fracture of the anterior or contralateral side of the mandible. The occurrence of superolateral dislocation of the condyle hooked above the zygomatic arch with an associated fracture of the medial pole of the condyle is rare and has been reported only once in the literature...
May 15, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28576712/preserving-the-facial-nerve-during-the-orbitozygomatic-craniotomy-surgical-anatomy-assessment-and-stepwise-illustration
#5
Ali Tayebi Meybodi, Michael T Lawton, Sonia Yousef, Jj González Sánchez, Arnau Benet
OBJECTIVE: Surgical safety and efficiency during an OZ osteotomy rely on thorough knowledge of the surgical anatomy of the facial nerve. Although the anatomy of the facial nerve and its relation to the pterional craniotomy are described, a thorough assessment of facial nerve preservation techniques during the OZ approach and its variations is lacking. We assessed the surgical anatomy of the facial nerve related to the OZ and provided a thorough stepwise description on how to preserve it...
May 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28558149/mandibulofacial-dysostosis-bauru-type-refining-the-phenotype
#6
Priscila P Moura, Nancy M Kokitsu-Nakata, Marília S Yatabe, Siulan Vendramini-Pittoli, Pedro H Hori, Maria L Guion-Almeida, Daniela G Garib, Antonio Richieri-Costa, Roseli M Zechi-Ceide
Mandibulofacial dysostosis (MFD) Bauru type (OMIM 604830) is a rare genetic condition characterized mainly by malar hypoplasia, orofacial cleft, and micrognathia. Here, we describe the clinical and radiographic sings of 13 individuals (12 female and 1 male) from eight unrelated kindreds with MFD Bauru type, including four previously reported cases, treated at the Hospital for Rehabilitation of Craniofacial Anomalies. The clinical phenotype was characterized by severe underdevelopment of mandible, midface hypoplasia, orofacial cleft, bitemporal narrowing, mild upper eyelid down slanting, high nasal bridge, thick and everted lower lip, minor ears abnormalities, and hearing loss...
May 30, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28554455/dentoalveolar-and-arch-dimension-changes-in-patients-treated-with-miniplate-anchored-maxillary-protraction
#7
Mohammed H Elnagar, Eman Elshourbagy, Safaa Ghobashy, Mohamed Khedr, Carla A Evans
INTRODUCTION: The aim of this study was to evaluate dentoalveolar and arch dimension changes in 2 miniplate-anchored maxillary protraction protocols in relation to an untreated control group using 3-dimensional digital models. METHODS: Thirty growing Class III subjects with maxillary deficiency in the late mixed or early permanent dentition phase were randomly divided into 3 groups. In group 1 (n = 10), patients were treated with skeletally anchored facemasks anchored with miniplates placed at the zygomatic buttress...
June 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28538075/is-surgical-navigation-useful-for-treating-zygomatic-arch-fractures
#8
Min Kwan Baek, Joo Hyun Jung, Seon Tae Kim, Na Rae Oh, Yu Jin Bang, Il Gyu Kang
OBJECTIVE: To report the case of a 58-year-old man with a zygomatic arch fracture, which was well localized and reduced using a surgical navigation system. METHODS: In this clinical report, the authors suggest intraoperative surgical navigation systems are useful diagnostically and for localizing sites of zygomatic arch fractures. RESULTS: The patient underwent successful closed reduction of zygomatic arch fractures using a surgical navigation system...
May 19, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28536928/reduction-malarplasty-that-uses-malar-setback-without-resection-of-malar-body-strip
#9
Hae-Won Yang, Jin-Joo Hong, Youn-Taek Koo
BACKGROUND: Various surgical methods have been developed and used to reduce prominent malar bones. The most common reduction malarplasty methods are resection of the bone strip of the malar bone with L-osteotomy or I-osteotomy, followed by setback and fixation. However, these methods could be associated with complications due to the bone strip resection. The present article introduces an effective and safe method that reduces the zygoma without resection of a malar bone strip. METHODS: Through preauricular and intraoral incisions, we performed the current L-osteotomy without resection of the malar bone strip using a reciprocating saw...
May 23, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28526860/risk-factor-analysis-and-idiographic-features-of-mandibular-coronoid-fractures-a-retrospective-case-control-study
#10
Hai-Hua Zhou, Kun Lv, Rong-Tao Yang, Zhi Li, Zu-Bing Li
This study aimed to identify and distinguish various factors that may influence the occurrence of mandibular coronoid fractures. From January 2000 to December 2009, a total of 1131 patients with maxillofacial fractures were enrolled in this statistical study to evaluate the association between mandibular coronoid fractures and other risk factors. Among these patients, 869 had mandibular fractures, and 25 sustained a total of 25 coronoid fractures. More than half (13 of 25 patients, 52%) of the coronoid fractures in these patients were caused by motor vehicle accidents...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28504848/association-of-traumatic-head%C3%A2-injuries-and-maxillofacial-fractures-a-retrospective-study
#11
Maher M Abosadegh, Shaifulizan Ab Rahman, Norkhafizah Saddki
The association of traumatic head injury (THI) with maxillofacial fractures (MFF) is a major health concern worldwide. In spite of the close anatomical proximity of maxillofacial bones to the cranium, the association of THI with MFF is controversial. The aim of this study was to assess the association between traumatic head injuries (THI) and maxillofacial fractures (MFF). Other factors associated with THI in patients with MFF were also investigated MATERIALS AND METHODS: A hospital-based retrospective study was conducted at the OMFS Unit, Hospital USM, Kelantan, Malaysia...
May 15, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28494044/placement-of-zygomatic-implants-into-the-malar-prominence-of-the-maxillary-bone-for-apical-fixation-a-clinical-report-of-5-to-13-years
#12
Yvan Fortin
PURPOSE: This study was designed to evaluate long-term performance of zygomatic implants using an alternative apical fixation point to establish the posterior restorative foundation for fixed full-arch restoration. MATERIALS AND METHODS: A retrospective study of all consecutively treated patients with advanced maxillary resorption who were treated with zygomatic implants to support fixed prostheses from August 14, 2001 through November 24, 2009 was conducted; the final follow-up was August 31, 2015...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28468179/zygomatic-arch-reconstruction-with-miniplate-of-2-0-system-in-complex-fracture
#13
Rodrigo Capalbo-da-Silva, Pedro Henrique Silva Gomes-Ferreira, Luis Fernando Azambuja Alcalde, Erik Neiva Ribeiro de Carvalho Reis, Ciro Borges Duailibe de Deus, Claudio Maltonado Pastori, Francisley Avila Souza
No abstract text is available yet for this article.
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28445374/treatment-of-isolated-zygomatic-arch-fracture-improved-outcomes-with-external-splinting
#14
David I Hindin, Corbin E Muetterties, Chirag Mehta, Stefanos Boukovalas, Justine C Lee, James P Bradley
BACKGROUND: The various approaches to reduction and fixation of isolated displaced zygomatic arch fractures have not been well studied. The authors compared established treatment methods for zygomatic arch fractures for both aesthetic and functional outcomes. METHODS: Consecutive patients with isolated zygomatic arch fractures with a minimum of 6 months' follow-up were studied in five groups: group 1, intraoral approach (no fixation); group 2, temporal approach (no fixation); group 3, coronal flap plate fixation; group 4, external splint fixation; and group 5, no surgery...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28439163/superolateral-dislocation-of-bilateral-intact-mandibular-condyles-a-rare-case-series
#15
Satishkumar G Patil, Bindu S Patil, Udupikrishna Joshi, B M Rudagi, Aafreen Aftab
BACKGROUND AND PURPOSE: The dislocation of mandibular condyle is a clinical condition in which the head of condyle has been displaced out of the glenoid fossa. Complete dislocation of the mandibular condyle can occur in anterior, posterior, lateral and superior direction. Among these dislocations, bilateral superolateral dislocation of mandibular condyles is quite rare and often misdiagnosed. Because of its rare occurrence and unusual clinical course, the best treatment is debatable. PATIENTS AND METHOD: We present the first case series of true bilateral superolateral dislocation of intact mandibular condyles (Type 2B) without fracturing the Zygomatic arch, associated with symphysis fracture...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28429472/transoral-orthodromic-temporalis-muscle-transfer-technique-for-the-paralysed-midface-our-learning-curve-experience-from-the-first-10-cases
#16
L Lazarova, T H Lesser, S C Leong
No abstract text is available yet for this article.
April 21, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28377144/a-three-dimensional-planned-osteotomy-on-the-zygomatic-arch-for-reduction-malarplasty
#17
H-L Kim, J-S Kwon, Y-J Choi, U-L Lee
During a reduction malarplasty, precise sectioning of the zygomatic arch according to the plan formulated in the diagnostic stage is very important, because differences in the locations of the osteotomies in the left and right zygomatic arch will result in facial asymmetry, and arch osteotomies that are placed at locations other than those specified during planning elicit unwanted results. A method for the precise planning and sectioning of the zygomatic arch involving the use of computed tomography (CT) and a viewer program is presented herein...
April 1, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28361028/prevalence-and-location-of-the-posterior-superior-alveolar-artery-using-cone-beam-computed-tomography
#18
Maryam Tehranchi, Ferial Taleghani, Shahriar Shahab, Arash Nouri
PURPOSE: Insufficient knowledge of the anatomy of the maxillary sinuses prior to sinus graft surgery may lead to perioperative or postoperative complications. This study sought to characterize the position of the posterior superior alveolar artery (PSAA) within the maxillary sinuses using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: A total of 300 patients with edentulous posterior maxillae, including 138 females and 162 males with an age range of 33-86 years, who presented to a radiology clinic between 2013 and 2015 were enrolled in this retrospective cross-sectional study...
March 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/28357005/peripheral-solitary-osteoma-of-the-zygomatic-arch-a-case-report-and-literature-review
#19
REVIEW
Thomas Starch-Jensen
Osteoma is a benign slow-growing osteogenic neoplasm commonly occurring in the craniofacial skeleton, characterized by the proliferation of compact and/or cancellous bone. Osteomas may be peripheral, central, or extraskeletal. Peripheral osteomas arise from the periosteum and are quite uncommon in the jaw bones. The exact aetiology and pathogenesis of peripheral osteoma are unknown. Clinically, peripheral osteomas are usually asymptomatic, but depending on the location and size of the lesion, it may cause swelling, pain, esthetic disfigurement and functional impairment...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28337417/skeletal-and-dentoalveolar-changes-after-miniscrew-assisted-rapid-palatal-expansion-in-young-adults-a-cone-beam-computed-tomography-study
#20
Jung Jin Park, Young-Chel Park, Kee-Joon Lee, Jung-Yul Cha, Ji Hyun Tahk, Yoon Jeong Choi
OBJECTIVE: The aim of this study was to evaluate the skeletal and dentoalveolar changes after miniscrew-assisted rapid palatal expansion (MARPE) in young adults by cone-beam computed tomography (CBCT). METHODS: This retrospective study included 14 patients (mean age, 20.1 years; range, 16-26 years) with maxillary transverse deficiency treated with MARPE. Skeletal and dentoalveolar changes were evaluated using CBCT images acquired before and after expansion. Statistical analyses were performed using paired t-test or Wilcoxon signed-rank test according to normality of the data...
March 2017: Korean Journal of Orthodontics
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