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Zygomatic implants

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https://www.readbyqxmd.com/read/30345476/zygomaticomaxillary-modifications-in-the-horizontal-plane-induced-by-micro-implant-supported-skeletal-expander-analyzed-with-cbct-images
#1
Daniele Cantarella, Ramon Dominguez-Mompell, Christoph Moschik, Luca Sfogliano, Islam Elkenawy, Hsin Chuan Pan, Sanjay M Mallya, Won Moon
BACKGROUND: Miniscrew-assisted rapid palatal expansion (MARPE) has been adopted in recent years to expand the maxilla in late adolescence and adult patients. Maxillary Skeletal Expander (MSE) is a device that exploits the principles of skeletal anchorage to transmit the expansion force directly to the maxillary bony structures and is characterized by the miniscrews' engagement of the palatal and nasal cortical bone layers. In the literature, it has been reported that the zygomatic buttress is a major constraint that hampers the lateral movement of maxilla, since maxilla is located medially to the zygomatic arches...
October 22, 2018: Progress in Orthodontics
https://www.readbyqxmd.com/read/30317436/an-oral-and-maxillofacial-navigation-system-for-implant-placement-with-automatic-identification-of-fiducial-points
#2
Chunxia Qin, Zhenggang Cao, Shengchi Fan, Yiqun Wu, Yi Sun, Constantinus Politis, Chunliang Wang, Xiaojun Chen
PURPOSE: Surgical navigation system (SNS) has been an important tool in surgery. However, the complicated and tedious manual selection of fiducial points on preoperative images for registration affects operational efficiency to large extent. In this study, an oral and maxillofacial navigation system named BeiDou-SNS with automatic identification of fiducial points was developed and demonstrated. METHODS: To solve the fiducial selection problem, a novel method of automatic localization for titanium screw markers in preoperative images is proposed on the basis of a sequence of two local mean-shift segmentation including removal of metal artifacts...
October 13, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/30305963/oral-rehabilitation-of-oral-cancer-patients-using-zygomatic-implant-supported-maxillary-prostheses-with-magnetic-attachment-three-case-reports
#3
Hisashi Ozaki, Hiromasa Sakurai, Yukie Yoshida, Hideyuki Yamanouchi, Mitsuyoshi Iino
Maxillectomy for malignant tumor often results in a maxillary defect and serious oral dysfunction. A prosthesis is usually provided for postoperative oral rehabilitation of such patients with maxillary defects. However, the further the resected region extends, the less stable the prosthesis becomes, due to insufficient bone and tooth support. Therefore, in many cases, conventional resection dentures may not be adequate to restore the oral function. Effective utilization of dental and zygomatic implants may help to restore oral function in patients with severe maxillary defects...
2018: Case Reports in Dentistry
https://www.readbyqxmd.com/read/30299113/zygomatic-implants-for-the-management-of-severe-alveolar-atrophy-in-the-partial-or-completely-edentulous-maxilla
#4
Paul S Petrungaro, Gregori M Kurtzman, Santiago Gonzales, Carlos Villegas
Treatment of severely resorbed partially or completely edentulous maxillae can include the utilization of the zygomatic process for immediate implant fixation and stabilization with immediate function. This approach may alleviate the need for significant grafting to enable implant placement in the posterior maxilla and allow implants to be placed into denser, more stable bone. Zygomatic implants, which have been used clinically for the past 20 years in the treatment of the severely resorbed maxilla, allow implant placement to support fixed prosthetics...
October 2018: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/30246217/role-of-anatomical-sites-and-correlated-risk-factors-on-the-survival-of-orthodontic-miniscrew-implants-a-systematic-review-and-meta-analysis
#5
REVIEW
Hisham Mohammed, Khaled Wafaie, Mumen Z Rizk, Mohammed Almuzian, Rami Sosly, David R Bearn
OBJECTIVES: The aim of this review was to systematically evaluate the failure rates of miniscrews related to their specific insertion site and explore the insertion site dependent risk factors contributing to their failure. SEARCH METHODS: An electronic search was conducted in the Cochrane Central Register of Controlled Trials (CENTRAL), Web of Knowledge, Scopus, MEDLINE and PubMed up to October 2017. A comprehensive manual search was also performed. ELIGIBILITY CRITERIA: Randomised clinical trials and prospective non-randomised studies, reporting a minimum of 20 inserted miniscrews in a specific insertion site and reporting the miniscrews' failure rate in that insertion site, were included...
September 24, 2018: Progress in Orthodontics
https://www.readbyqxmd.com/read/30246181/implant-prosthetic-rehabilitation-in-partially-edentulous-patients-with-bone-atrophy-an-umbrella-review-based-on-systematic-reviews-of-randomised-controlled-trials
#6
Mauro Merli, Marco Moscatelli, Umberto Pagliaro, Giorgia Mariotti, Ilaria Merli, Michele Nieri
PURPOSE: To summarise systematic reviews that assess the effects of different interventions for implant prosthetic rehabilitation in partially edentulous patients with the presence of bone atrophy. MATERIALS AND METHODS: Only systematic reviews of randomised controlled trials (RCTs) dealing with partially edentulous adult patients presenting bone defects were included. Treatments of interest were bone augmentation procedures, use of short, tilted or zygomatic implants, sinus lift and transposition of the inferior alveolar nerve...
2018: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/30196690/zygomatic-implants-in-our-daily-practice-part-ii-prosthetic-rehabilitation-and-effect-on-quality-of-life
#7
Mallouel Pineau, Romain Nicot, Ludovic Lauwers, Joël Ferri, Gwénaël Raoul
Effect of prosthesis and dental implants on quality of life related to the patient’s oral health can guide the clinician in providing best services. The zygomatic implant (ZI) is a partial or complete alternative technique to so-called traditional rehabilitation techniques (aiming to increase bone volume) of edentulous atrophic maxillae. The objective of this study was to evaluate the impact of fixed prosthetic rehabilitation by ZI on patients’ quality of life. This study highlighted the level of satisfaction of nine patients treated with ZI via their pre-therapeutic and post-therapeutic scores on the Oral Health Impact Profile (OHIP)-14 scale...
September 10, 2018: Swiss Dental Journal
https://www.readbyqxmd.com/read/30196689/zygomatic-implants-in-our-daily-practice-part-i-treatment-plan-and-surgical-technique
#8
Mallouel Pineau, Romain Nicot, Ludovic Lauwers, Joël Ferri, Gwénaël Raoul
Prosthetic rehabilitation of the atrophic edentulous maxilla is a challenge for which zygomatic implants (ZI) stand out from traditional techniques (aiming to increase bone volume) with reduced treatment duration and immediate loading. The aim of this study was to review the ZI treatment plan and its surgical technique based on a series of nine edentulous atrophic maxillary cases. Implant survival rate and postoperative follow-up were reported as well as those described in the literature. The advantages and disadvantages of ZI versus traditional methods of rehabilitation in our daily work were also discussed...
September 10, 2018: Swiss Dental Journal
https://www.readbyqxmd.com/read/30074849/extra-sinus-zygomatic-implants-to-avoid-chronic-sinusitis-and-prosthetic-arch-malposition-12-years-of-experience
#9
Paweł Aleksandrowicz, Marta Kusa-Podkańska, Katarzyna Maria Grabowska, Lidia Zofia Kotuła, Anna Szkatuła-Łupina, Joanna Wysokińska-Miszczuk
To report retrospectively on the 12-years follow-up results of the treatment and rehabilitation of edentulous maxillae, applying extra-sinus zygomatic implants alone or in combination with intra-sinus zygomatic implants. We recruited 22 Patients with 35 zygomatic Brånemark System Implants; 24 implants in the standard Brånemark protocol through the sinus and 11 extra - sinus implants outside the sinus. Additionally, 147 regular implants were placed (Brånemark System, Straumann, Nobel Replace, SternGold). The minimum follow-up period was from 50 months to a maximum of 152 months...
August 3, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29984920/-the-modified-lip-tooth-ridge-classification-a-guide-for-edentulous-maxillary-arches
#10
Jian-Zhang Liu
According to the width and height of the maxillary alveolar ridge, the maxillary edentulous jaws can be divided into three categories by using modified lip-tooth-ridge (MLTR) classification. Class Ⅰ is characterized by sufficient bone available for implants in the vertical and horizontal aspects and is suitable for fixed implant-supported prostheses. Class Ⅱ is characterized by sufficient bone amount available for implants in a horizontal aspect but insufficient for lip support and is suitable for a fixed detachable implant-supported prosthesis...
June 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29946654/-perioperative-nursing-of-zygomatic-implant-surgery-for-patients-with-severe-periodontitis
#11
Fang Bo, Wei Gu, Xiao-Wan Ling, Yi-Qun Wu, Yue-Ping Wang
PURPOSE: To analyze the perioperative nursing characteristics about severe periodontitis patients with immediate zygomatic implantation, and to summarize the clinical nursing experience. METHODS: Preoperatively, all patients received psychological counseling, oral hygiene instruction, and periodontal care with necessary means after physical examination. Cooperative procedures were preformed between nurses and surgeon during operation. After operation, nursing interventions were given including wound care, pain control, ice compression, appropriate diet and close follow-up...
February 2018: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29946455/stresses-generated-by-two-zygomatic-implant-placement-techniques-associated-with-conventional-inclined-anterior-implants
#12
Paulo H T Almeida, Sergio H Cacciacane, Fabiana M G França
Purpose: To make a comparative evaluation, by means of the finite element method, of the stress generated on supporting tissues and prosthetic system components, using zygomatic implants with the exteriorized and extramaxillary techniques, and different placement positions, associated either with inclined anterior implants, or those without inclination. Materials and methods: Eight (8) tridimensional models were created to represent the clinical situations being researched, using the dataset of scanned images of an edentulous model...
June 2018: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/29850277/rehabilitation-of-posterior-maxilla-with-obturator-supported-by-zygomatic-implants
#13
Sankalp Mittal, Manoj Agarwal, Debopriya Chatterjee
Prosthetic rehabilitation of atrophic maxilla and large maxillary defects can be done successfully by zygomatic implant-supported prosthesis. Zygomatic implants are an avant-garde to complex and invasive-free vascularised osteocutaneous flaps, distraction osteogenesis, and the solution to flap failures. A treated case of tuberculous osteomyelitis, with a class II (Aramany's classification) maxillary defect, reported to oral maxillofacial department, Government Dental College (RUHS-CODS). The defect in this group was unilateral, retaining the anterior teeth...
2018: Case Reports in Dentistry
https://www.readbyqxmd.com/read/29806663/immediately-loaded-zygomatic-implants-vs-conventional-dental-implants-in-augmented-atrophic-maxillae-1-year-post-loading-results-from-a-multicentre-randomised-controlled-trial
#14
RANDOMIZED CONTROLLED TRIAL
Rubén Davó, Pietro Felice, Roberto Pistilli, Carlo Barausse, Carlos Marti-Pages, Ada Ferrer-Fuertes, Daniela Rita Ippolito, Marco Esposito
PURPOSE: To compare the clinical outcome of immediately loaded cross-arch maxillary prostheses supported by zygomatic implants vs conventional implants placed in augmented bone. MATERIALS AND METHODS: In total, 71 edentulous patients with severely atrophic maxillas without sufficient bone volumes for placing dental implants, or when it was possible to place only two implants in the anterior area (minimal diameter 3.5 mm and length of 8 mm) and less than 4 mm of bone height subantrally, were randomised according to a parallel group design to receive zygomatic implants (35 patients) to be loaded immediately vs grafting with a xenograft, followed after 6 months of graft consolidation by placement of six to eight conventional dental implants submerged for 4 months (36 patients)...
2018: European Journal of Oral Implantology
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
#15
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/29763506/simplifying-zygomatic-implant-site-preparation-using-ultrasonic-navigation-a-technical-note
#16
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
#17
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/29697631/facial-fractures-pearls-and-perspectives
#18
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/29651653/intraosseous-venous-malformation-of-the-zygomatico-orbital-complex-case-report-and-literature-review-with-focus-on-confusions-in-vascular-lesion-terms
#19
Zoltán Fábián, György Szabó, Cecilia Petrovan, Karin Ursula Horváth, Botond Babicsák, Kálmán Hüttl, Zsolt Németh, Sándor Bogdán
Intraosseous vascular malformations (VascM) of the facial skeleton are rare entities, raising difficulties even today in their treatment. We present a case for zygomatic intraosseous venous malformation of traumatic etiology with growth dynamics presentation and a multidisciplinary treatment approach, with intravascular embolization surgical ablation and primary reconstructruction using a titanium patient-specific implant (PSI), and a review of the literature for intraosseous vascular lesions of the facial skeleton focusing on the diagnostic syntagms used by the involved medical personnel, to shed light on the confusions over these terms...
June 2018: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29565705/zygomatic-dental-implant-induced-orbital-fracture-and-inferior-oblique-trauma
#20
Ann Q Tran, Daniela P Reyes-Capó, Nimesh A Patel, Joshua Pasol, Hilda Capó, Sara T Wester
A 51-year-old female underwent four upper zygomatic dental implants (ZI) and one upper and four lower conventional implants. Immediately postoperatively, the patient had pain and diplopia upon manual elevation of the edematous eyelid. Panoramic x-ray showed a malpositioned right upper ZI, requiring removal of the right upper ZI the following day. The patient had delayed referral to ophthalmology one month later for persistent diplopia. Computed tomography scan and magnetic resonance imaging demonstrated a right inferolateral fracture with fibrosis surrounding the inferior oblique muscle...
March 22, 2018: Orbit
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