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https://www.readbyqxmd.com/read/29774595/long-term-schneiderian-membrane-thickness-changes-following-zygomatic-implant-placement-a-retrospective-radiographic-analysis-using-cone-beam-computed-tomography
#1
Kai Zhao, Meifei Lian, Shengchi Fan, Wei Huang, Feng Wang, Yiqun Wu
OBJECTIVES: The purpose of this retrospective study was to evaluate the long-term changes in the thickness of Schneiderian membranes after zygomatic implant placement using cone beam computed tomography (CBCT). MATERIAL AND METHODS: Twenty-five consecutive patients were included in this study. All the patients underwent bilateral zygomatic implant placement. Schneiderian membrane thickness (SMT) in 49 maxillary sinuses (one sinus was not included because of early loss of the zygomatic implants) was measured using CBCT before and at least 1 year after zygomatic implant placement...
May 17, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29771827/the-influence-of-socioeconomic-factors-on-the-epidemiology-of-maxillofacial-fractures-in-southern-italy
#2
Carolina Sbordone, Ida Barca, Marzia Petrocelli, Giovanni Dell'Aversana Orabona, Luigi Angelo Vaira, Walter Colangeli, Maria Giulia Cristofaro, Mario Giudice, Amerigo Giudice, Francesco Maria Cassandro, Federica Attanasi, Giorgio Iaconetta, Luigi Califano
Maxillofacial fractures represent a serious public health problem. Their epidemiology is extremely variable and its analysis is crucial to establish effective treatment and prevention of these injuries. The aim of this multicentric retrospective study was to analyze causes, demographics, incidence, characteristics of 987 patients diagnosed with maxillofacial trauma between 2011 and 2015 at Complex Operative Unit of Maxillofacial Surgery of Federico II University of Naples and Magna Graecia University of Catanzaro, Italy; 657 male and 310 female patients were admitted in the study...
May 15, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29769591/clinical-retrospective-case-control-study-on-the-mechanics-of-obstacle-in-mouth-opening-and-malocclusion-in-patients-with-maxillofacial-fractures
#3
Hai-Hua Zhou, Kun Lv, Rong-Tao Yang, Zhi Li, Xue-Wen Yang, Zu-Bing Li
This study aims to identify and distinguish various factors that may influence the clinical symptoms (limited mouth opening and malocclusion) in patients with maxillofacial fractures. From January 2000 to December 2009, 963 patients with maxillofacial fractures were enrolled in this statistical study to aid in evaluating the association between various risk factors and clinical symptoms. Patients with fractured posterior mandibles tended to experience serious limitation in mouth opening. Patients who sustained coronoid fractures have the highest risk of serious limitation in mouth opening (OR = 9...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29763506/simplifying-zygomatic-implant-site-preparation-using-ultrasonic-navigation-a-technical-note
#4
Gerardo Pellegrino, Achille Tarsitano, Valerio Taraschi, Tomaso Vercellotti, Claudio Marchetti
Zygomatic implant site preparation could be considered a challenging procedure because of the use of a very long twist drill that could sometimes be difficult to control due to the need for drilling the malar bone on an oblique surface. Ultrasound was recently suggested to achieve better control, but the specific long tips required are not readily available, and the elongated tip also tends to reduce the efficacy. This technical note describes a proposal of a novel computer-aided technique to simplify the procedure of zygomatic implant site preparation...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763505/influence-of-alveolar-bone-defects-on-the-stress-distribution-in-quad-zygomatic-implant-supported-maxillary-prosthesis
#5
Yuanyuan Duan, Ravi Chandran, Denise Cherry
PURPOSE: The purpose of this study was to create three-dimensional composite models of quad zygomatic implant-supported maxillary prostheses with a variety of alveolar bone defects around implant sites, and to investigate the stress distribution in the surrounding bone using the finite element analysis (FEA) method. MATERIALS AND METHODS: Three-dimensional models of titanium zygomatic implants, maxillary prostheses, and human skulls were created and assembled using Mimics based on microcomputed tomography and cone beam computed tomography images...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29756173/prediction-of-changes-due-to-mandibular-autorotation-following-miniplate-anchored-intrusion-of-maxillary-posterior-teeth-in-open-bite-cases
#6
Hassan E Kassem, Eiman S Marzouk
BACKGROUND: Prediction of the treatment outcome of various orthodontic procedures is an essential part of treatment planning. Using skeletal anchorage for intrusion of posterior teeth is a relatively novel procedure for the treatment of anterior open bite in long-faced subjects. METHODS: Data were analyzed from lateral cephalometric radiographs of a cohort of 28 open bite adult subjects treated with intrusion of the maxillary posterior segment with zygomatic miniplate anchorage...
May 14, 2018: Progress in Orthodontics
https://www.readbyqxmd.com/read/29754158/-a-phd-completed-midfacial-trauma-patients-in-amsterdam-an-epidemiological-survey
#7
E G Salentijn
A population of patients in Amsterdam with midfacial fractures was studied. Traffic accidents were found to be the most common cause, followed by violence and falls. The zygomatic complex was the most common fracture site. The majority of surgically treated patients consisted of men between 20 and 29 years of age. In addition to fracture displacement, indicative factors for surgery appear to be age, comorbidity and the presence or absence of functional problems. 8.1% of the surgically treated patients appear to have suffered brain damage...
May 2018: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/29746842/does-the-deep-layer-of-the-deep-temporalis-fascia-really-exist
#8
Hui Li, Kaide Li, Wenhao Jia, Chaoying Han, Jinlong Chen, Lei Liu
PURPOSE: It has been widely accepted that a split of the deep temporal fascia occurs approximately 2 to 3 cm above the zygomatic arch and extends into the superficial and deep layers. The deep layer of the deep temporal fascia is between the superficial temporal fat pad and the temporal muscle. However, during procedures, the authors noted the absence of the deep layer of the deep temporal fascia between the superficial temporal fat pad and the temporal muscle. This prospective study was conducted to clarify the presence or absence of a deep layer of the deep temporal fascia...
April 14, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29745761/diagnostic-reliability-of-low-dose-multidetector-computed-tomography-and-cone-beam-computed-tomography-in-maxillofacial-trauma-an-experimental-blinded-and-randomized-study
#9
Romke Rozema, Michiel Hj Doff, Peter Ma van Ooijen, Douwe Postmus, Henriëtte E Westerlaan, Martijn F Boomsma, Baucke van Minnen
OBJECTIVE: To assess the diagnostic reliability of low dose Multidetector Computed Tomography (MDCT) and Cone Beam Computed Tomography (CBCT) for zygomaticomaxillary fracture diagnosis. METHODS: Unilateral zygomaticomaxillary fractures were inflicted on four out of six fresh frozen human cadaver head specimens. All specimens were scanned using four MDCT and two CBCT imaging protocols of which the radiation exposure was systematically reduced. A blinded diagnostic routine was simulated at which 16 radiologists and 8 oral and maxillofacial (OMF) surgeons performed randomized image assessments...
May 10, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/29742580/delayed-reduction-of-zygomatic-arch-fracture-effectiveness-of-the-rowe-zygoma-elevator
#10
Jinwoo Kim, Woosuk Hwang
The zygomaticomaxillary complex fractures are common fractures among the all facial fractures, and the zygomatic arch fracture accounts for approximately 10% of all facial fractures. Various routes (Gillies app, Direct cutaneous app, Bicoronal, intraoral) and devices (Foley's ballon catheter, Rowe zygoma elevator, Langenbach, deschamps needle holder, Bone hook) for a surgical intervention of the zygomatic arch have been introduced. However, no study exists that has described an effective method of surgery for zygomatic arch fractures that have been left untreated for a long period, or for unstable reduction that have not been reduced >1 month after surgery...
May 8, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29742575/extra-articular-ankylosis-of-the-coronoid-process-with-the-zygomatic-bone-a-rare-case-treated-with-an-alternative-approach
#11
Maria Clara Rodrigues Pinheiro, Maria das Graças Rodrigues Pinheiro, Lucas Rodrigues Pinheiro, Sergio de Melo Alves-Junior, Joao de Jesus Viana Pinheiro, Andre Luis Ribeiro Ribeiro
No abstract text is available yet for this article.
May 8, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29732300/hard-and-soft-tissue-profiles-of-the-midface-region-in-patients-with-skeletal-class-iii-malocclusion-using-cone-beam-computed-tomography-multiplanar-reconstructed-image-analysis
#12
Bomi Kim, Hyung-Chul Lee, Seong-Hun Kim, Yongil Kim, Woosung Son, Seong Sik Kim
Objective: This study examined cone-beam computed tomography (CBCT)-derived multiplanar-reconstructed (MPR) cross-sections to clarify the salient characteristics of patients with skeletal class III malocclusion with midface deficiency (MD). Methods: The horizontal and sagittal plane intersection points were identified for middle-third facial analysis in 40 patients in the MD or normal (N) groups. MPR images acquired parallel to each horizontal plane were used for length and angular measurements...
May 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29718983/assessment-of-accuracy-and-recognition-of-three-dimensional-computerized-forensic-craniofacial-reconstruction
#13
Geraldo Elias Miranda, Caroline Wilkinson, Mark Roughley, Thiago Leite Beaini, Rodolfo Francisco Haltenhoff Melani
Facial reconstruction is a technique that aims to reproduce the individual facial characteristics based on interpretation of the skull, with the objective of recognition leading to identification. The aim of this paper was to evaluate the accuracy and recognition level of three-dimensional (3D) computerized forensic craniofacial reconstruction (CCFR) performed in a blind test on open-source software using computed tomography (CT) data from live subjects. Four CCFRs were produced by one of the researchers, who was provided with information concerning the age, sex, and ethnic group of each subject...
2018: PloS One
https://www.readbyqxmd.com/read/29716177/contouring-of-zygomatic-soft-tissue-using-bilateral-free-groin-flaps-in-a-treacher-collins-syndrome-patient
#14
Jae-Woo Heo, Ung Sik Jin
Treacher Collins syndrome is a congenital disorder that is characterized with a wide range of cranio-facial deformities. Zygomatic hypoplasia or aplasia is one of the key features, and surgical reconstruction of the consequent depression on the zygomatic area is deemed necessary by many patients. Various surgical options are available-injectables, alloplastic materials, autologous grafting, and autogenous tissue transfer. It depends on each patient which technique to use. Here, we present a clinical case, in which bilateral free groin flaps were adopted in attempt to resolve the remnant aesthetic deformity associated with zygomatic depression, despite a series of previous surgical efforts, in a 25-year-old Treacher Collins syndrome male patient...
May 3, 2018: Archives of Craniofacial Surgery
https://www.readbyqxmd.com/read/29706553/keeping-the-fat-on-the-right-spot-prevents-contour-deformity-in-temporalis-muscle-transposition
#15
Martinus M van Veen, Steven F S Korteweg, Pieter U Dijkstra, Paul M N Werker
The temporalis muscle transposition is a reliable, one-stage reanimation technique for longstanding facial paralysis. In the variation described by Rubin, the muscle is released from the temporal bone and folded over the zygomatic arch towards the modiolus. This results in unsightly temporal hollowing and zygomatic bulging. We present a modification of this technique, which preserves the temporal fat pad in its anatomical location as well as conceals temporal hollowing and prevents zygomatic bulging. The data of 23 patients treated with this modification were analysed...
April 13, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/29697631/facial-fractures-pearls-and-perspectives
#16
Obaid Chaudhry, Matthew Isakson, Adam Franklin, Suhair Maqusi, Christian El Amm
LEARNING OBJECTIVES: After studying this article, the participant should be able to: 1. Describe the A-frame configuration of anterior facial buttresses, recognize the importance of restoring anterior projection in frontal sinus fractures, and describe an alternative design and donor site of pericranial flaps in frontal sinus fractures. 2. Describe the symptoms and cause of pseudo-Brown syndrome, describe the anatomy and placement of a buttress-spanning plate in nasoorbitoethmoid fractures, and identify appropriate nasal support alternatives for nasoorbitoethmoid fractures...
May 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29693472/single-piece-fronto-temporo-orbito-zygomatic-craniotomy-a-personal-experience-and-review-of-surgical-technique
#17
Manish Sharma, Sridhar Shastri
BACKGROUND: Fronto-Temporo-Orbito-Zygomatic (FTOZ) craniotomy has progressed from its humble beginnings. Numerous variations including one piece, two piece and even three piece FTOZ craniotomies have been described. The ideal technique still remains elusive and its use remains restricted to a few specialised centres even when benefits far outweigh the surgical difficulties. OBJECTIVE: To analyse 11 cases in which single piece FTOZ craniotomy was used and to review the steps of surgery along with its advantages...
April 25, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29690583/anatomical-and-radiographic-study-on-the-skull-and-mandible-of-the-common-opossum-didelphis-marsupialis-linnaeus-1758-in-the-caribbean
#18
Reda Mohamed
Common opossums ( Didelphis marsupialis ) are found throughout the Caribbean island of Trinidad and Tobago. The present work was conducted on 10 skulls and mandibles of the common opossum to describe the osteology and foramina of these skulls and mandibles grossly and radiographically. The information that is garnered can be used to detect, diagnose, and treat head affections, as well as for comparative studies with the skulls and mandibles of other similar species. The skulls and mandibles were prepared and cleaned using standard method...
April 23, 2018: Veterinary Sciences
https://www.readbyqxmd.com/read/29684307/osteochondroma-of-the-zygomatic-arch-a-case-report-and-review-of-the-literature
#19
R Patel, G Obeid
An osteochondroma, when reported in the maxillofacial region, is a benign neoplasm that involves the skull base, maxillary sinus, zygomatic arch, or mandible. Most commonly, the osteochondroma occurs in the coronoid process and the condyle. One rare subtype of osteochondroma reported in the literature, termed Jacob disease, arises from the coronoid process and interferes with the zygomatic arch. This report describes a unique case of an isolated osteochondroma arising from the zygomatic arch and interfering with the coronoid process, which was treated through surgical excision by an intraoral approach...
March 31, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29677030/a-cadaveric-study-of-ultrasound-guided-maxillary-nerve-block-via-the-pterygopalatine-fossa-a-novel-technique-using-the-lateral-pterygoid-plate-approach
#20
Wirinaree Kampitak, Tanvaa Tansatit, Yasuyuki Shibata
BACKGROUND AND OBJECTIVES: This study aimed to describe and assess the accuracy and feasibility of a novel technique for ultrasound-guided maxillary nerve block using the lateral pterygoid plate (LPP) approach via the pterygopalatine fossa (PPF) in a soft cadaveric model. METHODS: Ten soft cadavers were studied. The curved array ultrasound transducer probe was applied over 1 side of the face of the cadavers in the open-mouth posture. It was placed transversely below the zygomatic arch for identifying the border of the maxillary tuberosity and the LPP...
April 19, 2018: Regional Anesthesia and Pain Medicine
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