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Maxillary surgery

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https://www.readbyqxmd.com/read/28808473/failure-of-cone-beam-computed-tomography-in-detection-of-fiber-post-perforation
#1
Mahta Fazlyab, Saeed Asgary
Detection of iatrogenic root perforation during post-space preparation especially in labiolingual plane can be challenging due to the two-dimensional nature of conventional radiography; this can be even more challenging if the cemented post is radiolucent. Cone-beam computed tomography (CBCT) scans were shown to be a valuable diagnostic aid in diagnosis of such cases. However, in this case, the application of CBCT did not help in diagnosis of a labial fiber post perforation in a maxillary central incisor which was finally detected through exploratory surgery...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28806541/surgical-management-of-an-aggressive-multifocal-squamous-odontogenic-tumor
#2
Pieter-Jan Verhelst, Laury Grosjean, Eman Shaheen, Constantinus Politis
Squamous odontogenic tumor is a rare benign epithelial odontogenic tumor of the jaw. Most are solitary lesions, although rare multifocal lesions have been described. Maxillary lesions have more aggressive behavior. Because of their benign character, these lesions are usually treated using a conservative surgical approach with curettage and surgical enucleation. This report describes the case of a 29-year-old woman with multifocal lesions who was initially treated with conservative surgical therapy. Early recurrence 6 months after surgery prompted more aggressive resection...
July 21, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28800842/treatment-outcome-in-orthognathic-surgery-a-prospective-randomized-blinded-case-controlled-comparison-of-planning-accuracy-in-computer-assisted-two-and-three-dimensional-planning-techniques-part-ii
#3
Martin Bengtsson, Gert Wall, Lennart Greiff, Lars Rasmusson
PURPOSE: The aim of the present study was to compare the accuracy of two-dimensional (2D) and three-dimensional (3D) prediction methods. The hypothesis was that a 3D technique would give a more accurate outcome of the postoperative result. MATERIAL AND METHODS: Patients with severe class III occlusion were included and planed with both a 2D and 3D prediction technique. They were there after randomly subdivided into a control (2D) and test (3D) group and treated according to the technique randomized for...
July 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28796853/patterns-of-change-in-facial-skeletal-aging
#4
Boris Paskhover, David Durand, Emily Kamen, Neil A Gordon
Importance: Research in facial aging has focused on soft-tissue changes rather than bony changes despite evidence of the importance of underlying bony structural changes. Research has also been limited by comparing different patients in separate age groups rather than the same patients over time. Objective: To longitudinally document patterns of change in the facial skeleton and determine a consistent methodology for measuring these changes. Design, Setting, and Participants: Case series study of university hospital system records using facial computed tomographic (CT) images timed at least 8 years apart in adults initially aged 40 to 55 years with no history of facial surgery who required repeated facial imaging that included the entire midface and cranium...
August 10, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28796110/surgery-navigation-in-treating-congenital-midfacial-dysplasia-of-patients-with-facial-cleft
#5
Dong Li, Shanshan Bai, Zheyuan Yu, Liang Xu, Jie Yuan, Haisong Xu, Min Wei
AIM: To explore a new accurate way for the treatment of congenital midfacial dysplasia in facial cleft patients. MATERIALS AND METHODS: Between November 2015 and November 2016, 8 patients with nasal deformity and midfacial dysplasia (Tessier Nos. 3-11 cleft) were collected (median age, years; range = 15-20 years). Expanded frontal flap for nasal reconstruction and image-guided navigation-assisted surgery for modified nasal-maxillary-hard palatine osteotomy to advance the peri-pyriform bone structure were performed in all the patients...
August 8, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28793965/clinical-accuracy-of-waferless-maxillary-positioning-using-customized-surgical-guides-and-patient-specific-osteosynthesis-in-bimaxillary-orthognathic-surgery
#6
Marcus Heufelder, Frank Wilde, Sebastian Pietzka, Frank Mascha, Karsten Winter, Alexander Schramm, Majeed Rana
Computer-assisted planning and surgery for the treatment of orthognathic deformities have been extensively documented over the last decade. Computerized and customized wafers have lacked to improve the accuracy of maxillary positioning, resulting in a drawback of computer-assisted orthognathic surgery. The aim of this study was to determine the accuracy of a new technique of waferless maxillary positioning using customized surgical guides and patient specific osteosynthesis implants in bimaxillary orthognathic surgery...
July 8, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28791817/binder-syndrome-clinical-findings-and-surgical-treatment-of-18-patients-at-the-department-of-plastic-surgery-in-polanica-zdr%C3%A3-j
#7
Piotr H Drozdowski, Ireneusz Łątkowski, Mateusz G Zachara, Piotr Wójcicki
BACKGROUND: Binder syndrome (BS) is an uncommon congenital underdevelopment of the maxilla and nasal skeleton. Other clinical features include a hypoplastic or absent anterior nasal spine; a short, flat nose with short columella; an acute nasolabial angle; a convex upper lip and class III malocclusion. OBJECTIVES: The aim of the study was to outline the major characteristics of BS and to present a variety of surgical treatment methods. MATERIAL AND METHODS: The study included 18 patients treated in the authors' department from 1989 to 2013...
May 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28777920/complications-associated-with-the-use-of-recombinant-human-bone-morphogenic-protein-2-in-ridge-augmentation-a-case-report
#8
Panagiotis Dragonas, Charles Palin, Saba Khan, Praveen Gajendrareddy, Whitney Weiner
This case report aims to describe in detail a complication associated with resorption of regenerated bone following implant placement and ridge augmentation using rhBMP-2 in combination with allograft and xenograft. Bilateral maxillary sinus and ridge augmentation procedures were completed using rhBMP-2 combined with allograft and xenograft. Five months later, significant bone augmentation was achieved which allowed for the placement of 4 implants. Upon stage 2 surgery, significant dehiscence was noted in all implants...
August 4, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28774851/a-prospective-study-of-chin-bone-graft-harvesting-for-unilateral-maxillary-alveolar-cleft-during-mixed-dentition
#9
AliReza Shirzadeh, Amin Rahpeyma, Saeedeh Khajehahmadi
PURPOSE: The chin is a common donor site for alveolar cleft bone grafting. The amount of bone available at this site can be limited, because conservative harvesting with mixed dentition must consider the incisive nerve, the unerupted mandibular canine, and the integrity of the inferior mandibular border. MATERIALS AND METHODS: Patients with nonsyndromic unilateral alveolar cleft in the mixed dentition stage were selected for this study. The volume of bone obtained from the mandibular symphysis (symphysis menti), degree of alteration in lower lip sensation, anterior tooth vitality, remaining bone in the alveolar cleft, and bone defects at the donor site 1 year after surgery were evaluated...
July 10, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28773005/implant-stability-of-biological-hydroxyapatites-used-in-dentistry
#10
Maria Piedad Ramírez Fernández, Sergio A Gehrke, Patricia Mazón, Jose L Calvo-Guirado, Piedad N De Aza
The aim of the present study was to monitor implant stability after sinus floor elevation with two biomaterials during the first six months of healing by resonance frequency analysis (RFA), and how physico-chemical properties affect the implant stability quotient (ISQ) at the placement and healing sites. Bilateral maxillary sinus augmentation was performed in 10 patients in a split-mouth design using a bobine HA (BBM) as a control and porcine HA (PBM). Six months after sinus lifting, 60 implants were placed in the posterior maxilla...
June 12, 2017: Materials
https://www.readbyqxmd.com/read/28770161/tumor-resection-from-retromolar-trigone-posterolateral-maxilla-and-anterior-mandibular-ramus-using-lower-cheek-flap-approach-a-case-report-and-review-of-literature
#11
Young-Hoon Kang, June-Ho Byun, Su-Jin Sung, Bong-Wook Park
A surgical approach involving the retromolar trigone, posterolateral maxilla, and pterygoid region is the most challenging in the field of maxillofacial surgery. The upper cheek flap (Weber-Ferguson incision) with subciliary extension and the maxillary swing approach have been considered as alternatives; however, neither approach provides sufficient exposure of the pterygoid region and the anterior portion of the mandibular ramus. In this report, we describe two cases in which a lower cheek flap approach was used for complete tumor resection in the retromolar trigone and the anterior mandibular ramus...
June 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28760319/maxillomandibular-advancement-as-the-initial-treatment-of-obstructive-sleep-apnoea-is-the-mandibular-occlusal-plane-the-key
#12
P Rubio-Bueno, P Landete, B Ardanza, L Vázquez, J B Soriano, R Wix, A Capote, E Zamora, J Ancochea, L Naval-Gías
Maxillomandibular advancement (MMA) can be effective for managing obstructive sleep apnoea (OSA); however, limited information is available on the predictor surgical variables. This study investigated whether normalization of the mandibular occlusal plane (MOP) was a determinant factor in curing OSA. Patients with moderate or severe OSA who underwent MMA were evaluated by preoperative and postoperative three-dimensional (3D) scans and polysomnograms. The postoperative value of MOP and the magnitude of skeletal advancement were the predictor variables; change in the apnoea-hypopnoea index (AHI) was the main outcome variable...
July 28, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28760288/surgery-first-approach-in-correcting-skeletal-class-iii-malocclusion-with-mandibular-asymmetry
#13
Hyeon-Shik Hwang, Min-Hee Oh, Hee-Kyun Oh, Heesoo Oh
This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach...
August 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28759740/radiological-evaluation-of-maxillary-sinus-anatomy-a-cross-sectional-study-of-300-patients
#14
Naroa Lozano-Carrascal, Oscar Salomó-Coll, Sergio Alexandre Gehrke, José Luis Calvo-Guirado, Federico Hernández-Alfaro, Jordi Gargallo-Albiol
OBJECTIVE: The aim of the present study was to evaluate the principal anatomical characteristics of the maxillary sinus using Cone Beam Computed Tomography (CBCT) in order to facilitate prevention of intra- and post-operative complications. MATERIALS AND METHODS: Three hundred CBCT scans from patients undergoing implant surgery were analysed. The following anatomical structures were evaluated: (1) Residual ridge height (RRH) and width (RRW); (2) Ridge bone density (BD); (3) Maxillary sinus angle (MSA); (4) Maxillary sinus lateral wall thickness (LWT); (5) Schneiderian membrane thickness (MT); (6) Maxillary sinus septa (SS); (7) Posterior superior alveolar artery (PSAA)...
July 29, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28756563/the-zygomatic-implant-perforated-zip-flap-a-new-technique-for-combined-surgical-reconstruction-and-rapid-fixed-dental-rehabilitation-following-low-level-maxillectomy
#15
C J Butterworth, S N Rogers
This aim of this report is to describe the development and evolution of a new surgical technique for the immediate surgical reconstruction and rapid post-operative prosthodontic rehabilitation with a fixed dental prosthesis following low-level maxillectomy for malignant disease.The technique involves the use of a zygomatic oncology implant perforated micro-vascular soft tissue flap (ZIP flap) for the primary management of maxillary malignancy with surgical closure of the resultant maxillary defect and the installation of osseointegrated support for a zygomatic implant-supported maxillary fixed dental prosthesis...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28754378/chronic-fibrosing-osteomyelitis-of-the-jaws-an-important-cause-of-recalcitrant-facial-pain-a-clinicopathologic-study-of-331-cases-in-227-patients
#16
Lawrence I Goldblatt, William R Adams, Kenneth J Spolnik, Kevin A Deardorf, Edwin T Parks
OBJECTIVE: This was a retrospective and follow-up analysis of 331 cases of chronic fibrosing osteomyelitis of the jaws (CFOJ) in 227 patients. STUDY DESIGN: Demographic, clinical, surgical, and microscopic characteristics were tabulated for all patients. A follow-up mail survey was used to determine the degree of symptom relief experienced after surgery. RESULTS: The female to male ratio approached 7:1, and mean age of patients was 53 years...
June 8, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28749983/how-does-mandibular-advancement-with-or-without-maxillary-procedures-affect-pharyngeal-airways-an-overview-of-systematic-reviews
#17
Su Keng Tan, Wai Keung Leung, Alexander Tin Hong Tang, Roger A Zwahlen
BACKGROUND: Mandibular advancement surgery may positively affect pharyngeal airways and therefore potentially beneficial to obstructive sleep apnea (OSA). OBJECTIVE: To collect evidence from published systematic reviews that have evaluated pharyngeal airway changes related to mandibular advancement with or without maxillary procedures. METHODOLOGY: PubMed, EMBASE, Web of Science, and Cochrane Library were searched without limiting language or timeline...
2017: PloS One
https://www.readbyqxmd.com/read/28747097/tissue-engineering-strategies-to-improve-osteogenesis-in-the-juvenile-swine-alveolar-cleft-model
#18
Montserrat Caballero, Donna C Jones, Zhengyuan Shan, Sajjad Soleimani, John A van Aalst
Alveolar <b>(gumline)</b> clefts are the most common congenital bone defect in humans, affecting 1 in 700 live births. Treatment <b>to repair these bony</b> defects relies on autologous, <b>cancellous</b> bone transfer from the iliac crest. This harvest requires a second surgical site <b>with increased </b>surgical time associated with potential complications, <b>while providing only limited cancellous bone</b>. Improvements in treatment protocols that avoid these limitations would be beneficial to patients with clefts and other craniofacial bone defects...
July 26, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28743605/three-dimensional-analysis-of-the-pharyngeal-airway-space-and-hyoid-bone-position-after-orthognathic-surgery
#19
Amanda Lury Yamashita, Liogi Iwaki Filho, Pablo Cornélius Comelli Leite, Ricardo de Lima Navarro, Adilson Luiz Ramos, Isolde Terezinha Santos Previdelli, Matheus Henrique Dal Molin Ribeiro, Lilian Cristina Vessoni Iwaki
PURPOSE: The aim of this study was to evaluate changes in the pharyngeal airway space (PAS) and hyoid bone position after orthognathic surgery with cone-beam computed tomography (CBCT). MATERIAL AND METHODS: This study was conducted with the tomographic records of 30 patients with skeletal class II or III deformities submitted to two different types of orthognathic surgery: Group 1 (n = 15), maxillary advancement, and mandibular setback; and Group 2 (n = 15), maxillomandibular advancement...
July 4, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28740330/soft-tissue-molding-technique-in-cleft-lip-and-palate-patient-using-laser-surgery-in-combination-with-orthodontic-appliance-a-case-report
#20
Pornpat Theerasopon, Tasanee Wangsrimongkol, Sajee Sattayut
BACKGROUND: Although surgical treatment protocols for cleft lip and palate patients have been established, many patients still have some soft tissue defects after complete healing from surgical interventions. These are excess soft tissue, high attached fraena and firmed tethering scares. These soft tissue defects resulted shallowing of vestibule, restricted tooth movement, compromised periodontal health and trended to limit the maxillary growth. The aim of this case report was to present a method of correcting soft tissue defects after conventional surgery in cleft lip and palate patient by using combined laser surgery and orthodontic appliance...
March 31, 2017: Laser Therapy
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