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Maxillary fractures

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https://www.readbyqxmd.com/read/27930464/nasal-airway-evaluation-after-le-fort-i-osteotomy-combined-with-septoplasty-in-patients-with-cleft-lip-and-palate
#1
Zhongying Wang, Peihua Wang, Yixin Zhang, Guofang Shen
Septal deviation constitutes an important component of both esthetic deformity and airway compromise in patients with cleft lip and palate (CLP). The posterior parts of the nasal septum presented greater deviation than the anterior parts in patients with complete unilateral CLP. Le Fort I down-fracture provides better access to the nasal septum than intranasal incision during rhinoplasty, especially to the posterior part. This study objectively and subjectively evaluated the nasal function after Le Fort I osteotomy combined with septoplasty in patients with complete unilateral CLP...
December 7, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27896212/effect-of-slow-forced-eruption-on-the-vertical-levels-of-the-interproximal-bone-and-papilla-and-the-width-of-the-alveolar-ridge
#2
Eun-Young Kwon, Ju-Youn Lee, Jeomil Choi
OBJECTIVE: Forced eruption has been proposed for the reconstruction of deficient bone and soft tissue. The aim of this study was to examine the changes in the alveolar ridge width and the vertical levels of the interproximal bone and papilla following forced eruption. METHODS: Patients whose hopeless maxillary anterior teeth were expected to undergo severe bone resorption and soft tissue recession upon extraction were recruited. In addition, patients whose maxillary anterior teeth required forced eruption for restoration due to tooth fracture or dental caries were included...
November 2016: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/27895347/comparison-of-fracture-and-deformation-in-the-rotary-endodontic-instruments-protaper-versus-k-3-system
#3
Sana Ehsen Nagi, Farhan Raza Khan, Munawar Rahman
This experimental study was done on extracted human teeth to compare the fracture and deformation of the two rotary endodontic files system namely K-3 and Protapers. It was conducted at the dental clinics of the Aga Khan University Hospital, Karachi, A log of file deformation or fracture during root canal preparation was kept. The location of fracture was noted along with the identity of the canal in which fracture took place. The fracture in the two rotary systems was compared. SPSS 20 was used for data analysis...
March 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27891426/palatonasal-fistula-repair-a-case-of-unanticipated-difficult-intubation
#4
Hemraj Tungaria, Lalit K Raiger, Rajkumar Paliwal, Shekhar Suman Saxena, Bishan Kumar Bairwa
Patients with present or previous history of facio-maxillary trauma will mostly be associated with a difficult airway. Surgical correction of these injuries might not always correct the altered airway. We report a case of palatonasal fistula following an old facio-maxillary fracture, which has led to interpretation of a difficult airway into a normal one. The patient was found to be having difficult airway during direct laryngoscopy which caused failure to intubate initially. Though, the patient was successfully intubated in the third attempt by senior anaesthesiologist making use of manoeuvres and equipment available, it made an impact for us to do a proper pre-op evaluation of patients with history of surgical correction of facial injuries and also for being prepared for can't ventilate and can't intubate situation in such type of cases...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27882078/debridement-in-chronic-osteomyelitis-with-benign-osteopetrosis-a-case-report
#5
Yu-Ping Liu, Xiang-Hua Lin, Man-Yun Yan, Bao-Quan Lin, Ming-Ying Zhuo
Osteopetrosis is a rare bone disease caused by metabolic imbalances as a result of genetic mutations. For instance, autosomal dominant osteopetrosis is caused by a missense mutation of the C1CN7 gene. This was first reported in 1904 and is thought to be caused by osteoclastic dysfunction and an impaired bone resorption ability. An accumulation of cortical bone mass during the remodeling of the medullary bone may increase the bone density and give rise to a hard marble consistency. Osteopetrosis can be divided into benign and malignant forms; however, no curative treatment exists for benign osteopetrosis...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881319/influence-of-remaining-tooth-structure-and-restorative-material-type-on-stress-distribution-in-endodontically-treated-maxillary-premolars-a-finite-element-analysis
#6
Junxin Zhu, Qiguo Rong, Xiaoyan Wang, Xuejun Gao
STATEMENT OF PROBLEM: How tooth preparation and material type affect the stress distribution of endodontically treated teeth restored with endocrowns remains unclear. PURPOSE: The purpose of this finite element (FE) study was to determine the influence of the quantity of remaining dental tissues and material type on stress distribution in endodontically treated maxillary premolars using 3-dimensional FE analysis. MATERIAL AND METHODS: Five 3-dimensional FE models were constructed on the basis of the restorative methods used and the quantity of preserved tooth tissues: a sound maxillary premolar, an endodontically treated maxillary premolar restored with composite resin, and endodontically treated maxillary premolars restored with endocrowns with thicknesses of 1...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27871481/impacts-of-contracted-endodontic-cavities-on-instrumentation-efficacy-and-biomechanical-responses-in-maxillary-molars
#7
Brent Moore, Konstantinos Verdelis, Anil Kishen, Thuan Dao, Shimon Friedman
INTRODUCTION: Recently, we reported that in mandibular molars contracted endodontic cavities (CECs) improved fracture strength compared with traditional endodontic cavities (TECs) but compromised instrumentation efficacy in distal canals. This study assessed the impacts of CECs on instrumentation efficacy and axial strain responses in maxillary molars. METHODS: Eighteen extracted intact maxillary molars were imaged with micro-computed tomographic imaging (12-μm voxel), assigned to CEC or TEC groups (n = 9/group), and accessed accordingly...
December 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27863859/effect-of-fiber-posts-on-the-fracture-resistance-of-maxillary-central-incisors-with-class-iii-restorations-an-in%C3%A2-vitro-study
#8
Mohammed Abduljawad, Abdulaziz Samran, Jadalkareem Kadour, Wassim Karzoun, Matthias Kern
STATEMENT OF PROBLEM: Endodontically treated teeth with Class III restorations show reduced fracture resistance. The placement of glass fiber posts may affect fracture resistance and should be further evaluated. PURPOSE: The purpose of this in vitro study was to evaluate the effect of fiber posts on the fracture resistance of endodontically treated maxillary central incisors with Class III restorations. MATERIAL AND METHODS: Forty extracted human maxillary central incisors were selected and divided into 4 test groups (n=10 each) according to the restoration strategy: control group; endodontically treated teeth without endodontic posts (GHT); endodontically treated teeth with 2 Class III restorations simulating coronal destruction (GCT); endodontically treated teeth with 2 Class III restorations and a carbon fiber post (GCF); and endodontically treated teeth with 2 Class III restorations and a glass-fiber post (GGF)...
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27862983/denosumab-prevention-and-management-of-hypocalcemia-osteonecrosis-of-the-jaw-and-atypical-fractures
#9
REVIEW
Kenneth Pittman, Yoland C Antill, Amanda Goldrick, Jeffrey Goh, Richard H de Boer
Denosumab, a bone-modifying agent, reduces the risk of skeletal-related events in patients with bone metastases from solid tumors and is generally well tolerated. However, hypocalcemia, osteonecrosis of the jaw (ONJ) and atypical fracture are potential and important toxicities of denosumab therapy that require attention. In pivotal phase III trials in patients with bone metastases from solid tumors, the incidence of hypocalcemia was 9.6% in denosumab-treated patients, with most events being asymptomatic, grade 2 and resolving by week 4...
November 10, 2016: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27861648/fracture-resistance-of-straight-and-angulated-zirconia-implant-abutments-supporting-anterior-three-unit-lithium-disilicate-fixed-dental-prostheses
#10
Samah Saker, Sameh El-Shahat, Mohamed Ghazy
PURPOSE: The purpose of this study was to evaluate fracture resistance of straight and angulated zirconia implant abutments supporting anterior three-unit lithium disilicate fixed dental prostheses (FDPs). MATERIALS AND METHODS: Four different test groups (n = 8) representing anterior three-unit implant-supported all-ceramic FDPs were fabricated to fit an in vitro model with two implants. Groups 1 and 2 simulated a clinical situation with an ideal implant position for maxillary left central and right lateral incisors from a prosthetic point of view, which allowed for the use of a straight, prefabricated zirconia and titanium abutment...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27859976/fatigue-failure-of-narrow-implants-with-different-implant-abutment-connection-designs
#11
Dimorvan Bordin, Lukasz Witek, Vinícius P Fardin, Estevam A Bonfante, Paulo G Coelho
PURPOSE: To evaluate the reliability of narrow diameter dental implants (NDIs) with similar macrogeometry and 3 implant-abutment connection designs. MATERIALS AND METHODS: Eighty-four NDIs (3.5 × 10 mm) were selected and divided into 4 groups (n = 21/group) according to implant-abutment connection design, as follows: EH - external hexagon, IH - internal hexagon, IC - internal conical, and IC-M - internal conical connected to a monolithic titanium abutment. Identical abutments were torqued to the implants, and standardized maxillary incisor crowns were cemented and subjected to step-stress accelerated life testing (SSALT) in water...
November 18, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27857773/a-case-report-of-delayed-repositioning-of-intruded-permanent-maxillary-central-incisors-accompanied-by-complicated-crown-fractures-a-2-year-follow-up
#12
Azade Rafiee, Hamid Moradian, Maryam Ayatollahi
Intrusive luxation is the most severe type of dental injury with a complex healing sequence. Pulp necrosis, root resorption (surface, inflammatory and replacement resorption), and defects in marginal periodontal bone healing are the main complications. Treatment strategies can be either active, by repositioning (surgical or orthodontic extrusion), or passive, by spontaneous re-eruption based on the thorough evaluation of the case. This paper reports a case of delayed repositioning of severely intruded permanent maxillary central incisors accompanied by complicated crown fractures after 3 months...
September 2016: Dental Research Journal
https://www.readbyqxmd.com/read/27857522/the-use-of-reformatted-cone-beam-ct-images-in-assessing-mid-face-trauma-with-a-focus-on-the-orbital-floor-fractures
#13
Raluca Roman, Mihaela Hedeşiu, Floarea Fildan, Robert Ileşan, Diana Mitea, Cristian Dinu, Mihaela Băciuţ
BACKGROUND AND AIM: This study aims at evaluating the reliability on specific multi-planar cone beam computer tomography (CBCT) reconstruction in the orbital floor fractures. METHODS: CBCT examination of the mid-face fractures area involving the floor of the orbit was performed in a number of 93 trauma patients by two independent radiologists. Both radiologists assessed the axial, coronal and sagittal sections and also the oblique coronal and sagittal extracted sections evaluating the location of the orbital fractures, its size and displacement, the involvement of the infra-orbital foramen, herniation of fat or muscle within the maxillary sinus, the overall type of the fracture and the implication of lateral or medial orbital wall...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27847754/microsurgical-re-treatment-of-an-endodontically-treated-tooth-with-an-apically-located-incomplete-vertical-root-fracture-a-clinical-case-report
#14
Silvio Taschieri, Massimo Del Fabbro, Ahmed El Kabbaney, Igor Tsesis, Eyal Rosen, Stefano Corbella
Although it is challenging, the early diagnosis of a vertical root fracture (VRF) is crucial in order to ensure tooth preservation. The purpose of this clinical case report was to describe reparative surgery performed to treat a tooth affected by an incomplete VRF. A 26 year old male patient was suspected to have a VRF in a maxillary left central incisor, and an exploratory flap was performed in order to confirm the diagnosis. After detecting the fracture, the lesion was surgically treated, the fracture and the infected root-end were removed, and a platelet-rich plasma membrane was used to cover the defect in order to prevent bacterial migration...
November 2016: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/27833965/the-prevalence-of-crown-injuries-to-frontal-teeth-at-schoolchildren-aged-6-to-14-and-their-effects-on-the-periodontal-tissue
#15
Ionela Teodora Dascălu, Horia Octavian Manolea, Evantia Coleş, Constantin Dăguci, Marilena Bătăiosu, Cristina Maria Andrei, Mihaela Jana Ţuculină, Oana Andreea Diaconu, LuminiŢa Dăguci
The research aims at emphasizing the interrelation between the social impact and the self-esteem of schoolchildren with dental crown fractures in the frontal group. Dental traumatic injuries are frequently met to schoolchildren, therefore, the prevention and interception of traumatic pathology within parents, teachers and children is more than necessary. Our statistical study intends to determine the prevalence of dental trauma to southwestern Romanian schoolchildren aged 6 to 14. The survey included a number of 1684 schoolchildren attending public schools, randomly chosen...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27833714/maxillary-sinus-mucocele-as-a-late-complication-in-zygomatic-orbital-complex-fracture
#16
Juliana Dreyer da Silva de Menezes, Lucas Borin Moura, Valfrido Antonio Pereira-Filho, Eduardo Hochuli-Vieira
This article presents an unusual case of maxillary sinus mucocele as a late complication of zygomatic-orbital complex fracture, 23 years after the initial treatment. The patient was referring diplopia and decreased visual acuity with signs of dystopia, proptosis, and epiphora. Computed tomographic scan revealed an expansive lesion in the maxillary sinus with surrounding bone erosion and displacement of the eyeball. Treatment option was excisional biopsy and orbital floor reconstruction with titanium mesh restoring the appropriate orbital position...
November 2016: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/27833712/partially-thrombosed-internal-maxillary-pseudoaneurysm-after-gunshot-wound
#17
Menachem Gold
A 29-year-old man arrived in our emergency department after being shot on the face. Computed tomography (CT) revealed multiple facial bone fractures along the bullet trajectory. On day 10 of admission, CT angiogram of the neck revealed a partially thrombosed pseudoaneurysm in the parapharyngeal fat pad. The pseudoaneurysm was successfully treated with coil embolization. This report discusses diagnosis and treatment of a partially thrombosed internal maxillary artery pseudoaneurysm. Although digital subtraction angiography is the gold standard for pseudoaneurysm diagnosis, CT angiography may provide complimentary information, as seen in this case...
November 2016: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/27833351/arch-wire-a-novel-technique-for-intra-maxillary-fixation
#18
S R Shenoi, Chinmay Rao
INTRODUCTION: Arch bars are regularly used in the management of dentoalveolar and minimally displaced fractures of the maxilla or mandible and luxation or avulsion of teeth by maxillofacial surgeons. The procedure for arch bar placement has remained unchanged over the period of years, and this coupled with the difficulty in maintenance of oral hygiene is a problem that begs attention. TECHNIQUE: We have devised a technique to overcome these hurdles and achieve adequate intramaxillary splinting...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27833286/diagnostic-tools-in-maxillofacial-fractures-is-there-really-a-need-of-three-dimensional-computed-tomography
#19
Sheerin Shah, Sanjeev K Uppal, Rajinder K Mittal, Ramneesh Garg, Kavita Saggar, Rishi Dhawan
INTRODUCTION: Because of its functional and cosmetic importance, facial injuries, especially bony fractures are clinically very significant. Missed and maltreated fractures might result in malocclusion and disfigurement of the face, thus making accurate diagnosis of the fracture very essential. In earlier times, conventional radiography along with clinical examination played a major role in diagnosis of maxillofacial fractures. However, it was noted that the overlapping nature of bones and the inability to visualise soft tissue swelling and fracture displacement, especially in face, makes radiography less reliable and useful...
May 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/27832968/fifteen-year-survival-of-anterior-all-ceramic-cantilever-resin-bonded-fixed-dental-prostheses
#20
Matthias Kern
PURPOSE: The aim of this follow-up study was to report the long-term outcome of all-ceramic cantilever resin-bonded fixed dental prostheses (RBFDPs). MATERIALS AND METHODS: In 16 patients (mean age of 33.3±17.5years) 22 RBFDPs made from a glass-infiltrated alumina ceramic (In-Ceram) were inserted with a phosphate monomer containing luting agent after air-abrasion of the retainer wings. The abutment preparation included a shallow groove on the cingulum and a small proximal box...
November 8, 2016: Journal of Dentistry
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