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zygomatic arch

Satoshi Kushida, Natsuko Kakudo, Kenji Kusumoto
INTRODUCTION: In patients with habitual dislocation of the temporomandibular joint, anterior dislocation readily occurs with mouth opening in the normal range. METHODS: This short paper describes our novel procedure, modified zygomatic arch osteotomy reported by LeClerc et al., with oblique osteotomy to create a V-shaped notch at the tip for more accurate locking. CONCLUSION: The technique obtained favorable results without the recurrence of TMJ dislocation...
September 2016: Journal of Maxillofacial and Oral Surgery
Simone Heuberer, Christian Ulm, Konstantin Zauza, Werner Zechner, Georg Watzek, Gabriella Dvorak
PURPOSE: The present prospective pilot study aimed to evaluate the feasibility of Onplants (Onplant Orthodontic System) off label use in the highly atrophic edentulous maxillae of adult patients to avoid bone grafting and conventional dental or zygomatic implants. MATERIAL AND METHODS: Two Onplants were placed subperiosteally in the anterior part of the hard palate in five adult patients presenting a highly atrophic edentulous maxilla, class V or VI, according to Cawood and Howell...
2016: European Journal of Oral Implantology
Yunfeng Li, Zhiai Hu, Bin Ye, Yao Liu, Xiaochun Ren, Songsong Zhu
PURPOSE: Orthognathic surgery is an efficient procedure for cosmetic and functional aims. However, when functional improvement is achieved by mandibular or maxillary operations, additional esthetic corrections may be imperative for some patients. This study aims to introduce our primary practice of simultaneous facial bone contouring and orthognathic surgery for esthetic reasons. PATIENTS AND METHODS: Ten patients with dentofacial deformities as well as a prominent angle, asymmetric deformities, or a high zygoma and zygomatic arch were recruited from West China Hospital of Stomatology, Sichuan University (Chengdu, China), between January 1, 2014, and July 31, 2015...
August 31, 2016: Journal of Oral and Maxillofacial Surgery
Sibylle Sabrautzki, Michael A Sandholzer, Bettina Lorenz-Depiereux, Robert Brommage, Gerhard Przemeck, Ingrid L Vargas Panesso, Alexandra Vernaleken, Lillian Garrett, Katharina Baron, Ali O Yildirim, Jan Rozman, Birgit Rathkolb, Christine Gau, Wolfgang Hans, Sabine M Hoelter, Susan Marschall, Claudia Stoeger, Lore Becker, Helmut Fuchs, Valerie Gailus-Durner, Martin Klingenspor, Thomas Klopstock, Christoph Lengger, Leuchtenberger Stefanie, Eckhard Wolf, Tim M Strom, Wolfgang Wurst, Martin Hrabě de Angelis
Animal models resembling human mutations are valuable tools to research the features of complex human craniofacial syndromes. This is the first report on a viable dominant mouse model carrying a non-synonymous sequence variation within the endothelin receptor type A gene (Ednra c.386A>T, p.Tyr129Phe) derived by an ENU mutagenesis program. The identical amino acid substitution was reported recently as disease causing in three individuals with the mandibulofacial dysostosis with alopecia (MFDA, OMIM 616367) syndrome...
September 26, 2016: Mammalian Genome: Official Journal of the International Mammalian Genome Society
Christian Mertens, Jose de San Jose Gonzalez, Christian Freudlsperger, Jens Bodem, Johannes Krisam, Jürgen Hoffmann, Michael Engel
BACKGROUND: Patients with hemimaxillectomy defects after tumor surgery can alternatively be rehabilitated with dental obturators or microvascular flaps. When general medical or oncologic conditions do not permit microvascular surgery, dental obturators are the only solution, yet retention for edentulous patients is often poor. The aim of this study was to evaluate whether CAD/CAM suprastructures supported by implants placed in both residual alveolar ridges and contralateral zygomatic bone could enhance obturator stability and improve functional outcomes...
August 24, 2016: Journal of Cranio-maxillo-facial Surgery
Serdar Ercan, Alba Scerrati, Phengfei Wu, Jun Zhang, Mario Ammirati
OBJECTIVE The subtemporal approach is one of the surgical routes used to reach the interpeduncular fossa. Keyhole subtemporal approaches and zygomatic arch osteotomy have been proposed in an effort to decrease the amount of temporal lobe retraction. However, the effects of these modified subtemporal approaches on temporal lobe retraction have never been objectively validated. METHODS A keyhole and a classic subtemporal craniotomy were executed in 4 fresh-frozen silicone-injected cadaver heads. The target was defined as the area bordered by the superior cerebellar artery, the anterior clinoid process, supraclinoid internal carotid artery, and the posterior cerebral artery...
September 16, 2016: Journal of Neurosurgery
Austin Hembd, Purushottam A Nagarkar, Salim Saba, Dinah Wan, J Walter Kutz, Brandon Isaacson, Sachin Gupta, Charles L White, Rod J Rohrich, Shai M Rozen
PURPOSE: Donor nerve axonal count over 900 in two-stage reconstructions using cross facial nerve grafts is possibly associated with improved outcomes in facial reanimation. Facial nerve axonal analysis was performed to determine the ideal location for optimizing axonal load. Correlation between axonal number, branch diameter, and age was also assessed. METHODS: 28 fresh unpreserved cadaveric hemi-faces were dissected exposing the extracranial facial nerve branches...
September 14, 2016: Plastic and Reconstructive Surgery
Won-Kang Lee, Jung-Hee Bae, Kyung-Seok Hu, Takafumi Kato, Seong-Taek Kim
PURPOSE: The objective of this study was to simplify the anatomically safe and reproducible approach for BoNT injection and to generate a detailed topographic map of the important anatomical structures of the temporal region by dividing the temporalis into nine equally sized compartments. METHODS: Nineteen sides of temporalis muscle were used. The topographies of the superficial temporal artery, middle temporal vein, temporalis tendon, and the temporalis muscle were evaluated...
September 8, 2016: Surgical and Radiologic Anatomy: SRA
You-Jin Choi, Won-Jae Lee, Hyung-Jin Lee, Kang-Woo Lee, Hee-Jin Kim, Kyung-Seok Hu
This study involved an extensive analysis of published research on the morphology of the temporalis muscle in order to provide an anatomical guideline on how to distinguish the temporalis muscle and temporalis tendon by observing the surface of the patient's face. Twenty-one hemifaces of cadavers were used in this study. The temporalis muscles were dissected clearly for morphological analysis between the temporalis muscle and tendon. The posterior border of the temporalis tendon was classified into three types: in Type I the posterior border of the temporalis tendon is located in front of reference line L2 (4...
2016: Toxins
Sandra C Jasinoski, Fernando Abdala
Ontogenetic changes in the skull and mandible of thirty-one specimens of Galesaurus planiceps, a basal non-mammaliaform cynodont from the Early Triassic of South Africa, are documented. The qualitative survey indicated eight changes in the craniomandibular apparatus occurred during growth, dividing the sample into three ontogenetic stages: juvenile, subadult, and adult. Changes in the temporal region, zygomatic arch, occiput, and mandible occurred during the transition from the subadult to adult stage at a basal skull length of 90 mm...
September 12, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Sung Hoon Koh, Hong Jin Kim, Sung Won Jung, Hyoseob Lim
Fractures of the zygoma are relatively frequent and their management has been extensively described. Above all, isolated zygomatic arch fractures comprise about 10% of all zygomatic fractures. Temporal approach is common surgical method, Gillies approach, but it has the limitation of blinded surgical approach. So, the mobile intraoperative fluoroscan is used famously for more suitable reduction, but it needs an additional man to control the machine and increases irradiation doses. The authors got the simple idea, but so helpful tool, and it has been performed since 2012...
September 2016: Journal of Craniofacial Surgery
Z Paul Lorenc, Johnson C Lee
Current concepts of facial aging propose that volume losses of bone and fat in specific compartmentalized areas are the primary and the most important causes of the characteristic changes seen in the aging face. The authors propose that the use of Radiesse in the supra-periosteal space of the temple, zygomatic arch, anterior cheek, pyriform aperture, and pre-jowl sulcus most effectively and most efficiently corrects these volume losses, and therefore best helps to restore a youthful appearance. Placement of filler directly on bone produces a lifting effect on all of the overlying tissues as a single unit which the authors term "composite volumization"...
September 1, 2016: Journal of Drugs in Dermatology: JDD
Wooyeol Baek, Taeyong Woo, Young Seok Kim, In Sik Yun, Jimyung Kim, Se Woon Choi, Tai Suk Roh, Dae Hyun Lew
BACKGROUND: Reduction malarplasty to correct prominent malar complex is popular in Asians. Despite the popularity of reduction malarplasty, most of the surgical methods applied are not selected according to the degree of zygoma protrusion. In this study, we analyzed the effectiveness of two different surgical procedures to clarify their appropriateness for each zygoma type. METHODS: One of the procedures used was the "bidirectional wedge ostectomy," in which a bidirectional wedge-shaped bone fragment was removed from the zygomatic body via oral incision and oblique complete osteotomy of the zygomatic arch via sideburn incision...
August 2, 2016: Journal of Cranio-maxillo-facial Surgery
Phillip B Dauwe, Austin Hembd, Erika De La Concha-Blankenagel, Salim Saba, Charles White, Alexander Cardenas-Mejia, Shai M Rozen
BACKGROUND: Facial paralysis has a profound impact on the brow, and currently static procedures are the mainstay of treatment. The deep temporal branches of the trigeminal nerve, given their proximity to the brow, may serve as possible donor nerves for both potential innervation of a free muscle transfer in patients with prolonged facial palsy or nerve transfers in acute or subacute palsy. As such, the authors present the detailed surgical anatomy of the deep temporal nerve, assessing feasibility for both functional muscle and nerve transfers, including a proposed surgical technique...
September 2016: Plastic and Reconstructive Surgery
Wuyang Shui, Mingquan Zhou, Qingqiong Deng, Zhongke Wu, Yuan Ji, Kang Li, Taiping He, Haiyan Jiang
Craniofacial reconstruction (CFR) is used to recreate a likeness of original facial appearance for an unidentified skull; this technique has been applied in both forensics and archeology. Many CFR techniques rely on the average facial soft tissue thickness (FSTT) of anatomical landmarks, related to ethnicity, age, sex, body mass index (BMI), etc. Previous studies typically employed FSTT at sparsely distributed anatomical landmarks, where different landmark definitions may affect the contrasting results. In the present study, a total of 90,198 one-to-one correspondence skull vertices are established on 171 head CT-scans and the FSTT of each corresponding vertex is calculated (hereafter referred to as densely calculated FSTT) for statistical analysis and CFR...
September 2016: Forensic Science International
Vaibhav Jain, Himani Garg
Zygomatico-maxillary complex fractures present a challenging diagnostic and reconstructive task to the surgeon. Gillie's temporal approach has been a commonly used technique for zygomatic arch reduction but surgeons have been commonly using a buccal sulcus approach for the reduction of zygomatic arch fractures as well as for combined zygomatico-maxillary complex fractures. This paper outlines the use of Rowe's elevator (modification of Bristow's elevator) intra-orally to reduce zygomatic arch fractures and if required, simultaneously plate the zygoma through the same approach...
August 16, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Ranjit Kumar P, Naveen G, Raja Satish P, Srinivas Chakravarthy P, L Krishna Prasad
INTRODUCTION: Literature reviews are replete with discussions focusing on the incidence, types, and patterns of disruption in TM joint function, besides enumerating and classifying its causes. However, atypical situations do present, such situations warranting a detailed, methodical assessment before therapeutic institution. PRESENTATION OF CASE: Described here is management of a unique case of post-traumatic pseudo-ankylosis in a 8year old child that had an old fractured condyle, displaced and dislocated anteriorly into the sigmoid notch, with eventual fusion to the ipsilateral zygomatic arch on its medial side...
2016: International Journal of Surgery Case Reports
Peter C Strøm, Boaz Arzi, Derek D Cissell, Frank J M Verstraete
OBJECTIVE: To describe the clinical features and results of treatment of true ankylosis and pseudoankylosis of the temporomandibular joint in dogs. METHODS: This study was a retrospective case series. Ten client-owned dogs that were presented for inability to open the mouth or a severely decreased range of motion of the temporomandibular joint were included. Information on the surgical procedures performed and the perioperative complications were documented. Three-dimensional printing of the skull was performed in four dogs...
September 20, 2016: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
Huicai Wen, Yunpeng Sui, Xueping Jian, Huaiwei Liao, Li Ma, Guizhen Xu, Yanping Liu, Jun Wan, Yingjie Lu, Jianhua Fu, Honghua Yang, Jie Zhang
OBJECTIVE: To explore the effectiveness of the zygomatic spindle-shaped osteotomy and internal push of titanium screw anchor for prominent malar. METHODS: Between July 2011 and January 2015, 58 patients with prominent malar underwent zygomatic spindle-shaped osteotomy and internal push of titanium screw anchor. There were 3 males and 55 females, aged 18-33 years (mean, 23 years). They had congenital bilateral prominent malar. Preoperative anteroposterior, lateral, supine position, 45" oblique photographs of the face were taken, three-dimensional CT reconstruction of face was performed...
April 2016: Chinese Journal of Reparative and Reconstructive Surgery
Sanghoon Park, Do Hoon Kim, Takho Kim, Tae Sung Lee
Reduction of mid-face width is a major concern in Asian facial contouring surgery, and some patients want their mild or borderline problems to be improved in a minimally invasive manner. The authors' mini-zygoma reduction surgery technique is indicated for patients who seek both minimal invasiveness and reliability. Patients presenting with a wide mid-face and isolated zygomatic arch protrusion without severe zygomatic body prominence were included into the study. All surgeries are performed under local anesthesia and on an outpatient basis...
July 2016: Journal of Craniofacial Surgery
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