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Maxillary fractures

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https://www.readbyqxmd.com/read/28068189/intrapulpal-temperature-increase-during-er-yag-laser-aided-debonding-of-ceramic-brackets
#1
Hilal Yilanci, Zeynep Beyza Yildirim, Sabri Ilhan Ramoglu
OBJECTIVE: The purpose of this study was to evaluate the temperature changes in the pulp chamber while using a newly introduced application of Er:YAG laser to debond ceramic brackets in a study model with a pulpal circulation with and without thermocycled samples. BACKGROUND DATA: An esthetic alternative to stainless steel brackets, ceramic brackets have been proposed. However, because of their low fracture resistance and high bond strengths, ceramic brackets can cause a problem when they are being removed using conventional techniques...
January 9, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28050519/multidisciplinary-restoration-of-traumatized-and-displaced-maxillary-central-incisor-by-bent-wire-system-a-novel-approach
#2
Shilpa S Sasalawad, Vivek Jogani, Suryakanth M Pai, Rashmi C Chour, Deepti V Balehosur
Management of traumatic injuries to teeth is a challenge to dental practice, as it occurs when dentists are least prepared for it. The direction and the force of the object or the fall significantly affects the diagnosis, treatment plan and therefore the outcome of the treatment. These traumatic injuries may present with different clinical situations which demand immediate attention and assessment by the clinician. The maxillary central incisor crown fractures are the most common variant of trauma, because of the anterior and protrusive positioning...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050507/shear-bond-strength-of-ceramic-brackets-with-different-base-designs-comparative-in-vitro-study
#3
Mohd Younus Ansari, Deepak K Agarwal, Ankur Gupta, Preeti Bhattacharya, Juhi Ansar, Ravi Bhandari
INTRODUCTION: Knowledge about the Shear Bond Strength (SBS) of ceramic brackets with different base design is essential as it affects bond strength to enamel. AIM: The aim of the present study was to evaluate and compare the effect of base designs of different ceramic brackets on SBS, and to determine the fracture site after debonding. MATERIALS AND METHODS: Four groups of ceramic brackets and one group of metal brackets with different base designs were used...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28028422/can-low-level-laser-therapy-benefit-bone-regeneration-in-localized-maxillary-cystic-defects-a-prospective-randomized-control-trial
#4
Ahmed Abbas Zaky, Hanaa Mohamed Mohamed El Shenawy, Tarek Abdel Hamed Harhsh, Mahmoud Shalash, Noha Mohamed Ismael Awad
AIM: The aim of the study was to evaluate the effect of Low-Level Laser Therapy (LLLT) on bone formation in cystic defects following cyst enucleation. PATIENTS AND METHODS: The sample was composed of sixteen patients with enucleated maxillary bony cystic lesions. With an age range from 20 - 44 grouped as eight Laser and eight Control patients. Laser group was subjected to low intensity diode laser immediately after surgery and then for three times per week for two weeks using a therapeutic laser irradiation...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28024874/dental-and-temporomandibular-joint-pathology-of-the-california-mountain-lion-puma-concolor-couguar
#5
A Aghashani, A S Kim, P H Kass, F J M Verstraete
Skulls from 91 California mountain lions (Puma concolor couguar) were examined macroscopically and radiographically. The majority of the skulls were from young adult animals (57.1%). The skull specimens were from 42 male (46.1%) and 34 female (37.4%) animals, while the gender was unknown for the remainder. The majority (94.5%) of teeth were present for examination. Only 11 teeth were identified as absent congenitally; five of these teeth were maxillary first molar teeth and three were maxillary second premolar teeth...
December 23, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28024774/three-dimensional-virtual-surgery-simulation-assisted-asymmetric-bilateral-mandibular-distraction-osteogenesis-for-a-patient-with-bilateral-condylar-fractures
#6
Myung-Jin Kim, Jihee Seo, Do-Keun Kim, Seung-Hak Baek
INTRODUCTION: Our objective was to report a patient treated with 3-dimensional virtual-surgery simulation-assisted asymmetric bilateral mandibular distraction osteogenesis. METHODS: A boy (age, 9.5 years) had mandibular hypoplasia and facial asymmetry, induced by bilateral condylar fractures at 4 years of age. The asymmetric bilateral mandibular distraction osteogenesis was planned to correct facial asymmetry and mandibular hypoplasia. The 3-dimensional virtual-surgery simulation results were 11 mm of horizontal distraction on the right side and 4...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28005783/florid-cemento-osseous-dysplasia-simultaneous-the-chronic-suppurative-osteomyelitis-in-mandible
#7
Mateus Barros Cavalcante, Amanda Laísa de Oliveira Lima, Marcus Antônio Brêda Júnior, Milkle Bruno Pessoa Santos
INTRODUCTION: The florid cemento-osseous dysplasia is an uncommon condition nonneoplastic, of unknown cause with higher prevalence in melanodermic women, limited the maxillary bones, is characterized by the presence of dispersed and diffuse radiopaque calcifications, constituted of bone and dense cemento; however, when the bone is infected it induces the suppuration and formation of osseous sequestra, thus resulting in an osteomyelitis frame. CLINICAL REPORT: The patient was attended in a Dental Specialties Center in the state of Alagoas, Brazil, presenting on clinical examination edema and extra oral fistula with pus drainage in hemiface submandibular of the right side...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005755/management-of-zygomatic-fractures-in-young-patients-technical-modifications-for-aesthetic-and-functional-results
#8
Antonio Cortese, Giuseppe D'Alessio, Sergio Brongo, Maurizio Gargiulo, Pier Paolo Claudio
INTRODUCTION: The zygomaticomaxillary complex is very vulnerable to injury because of its intrinsically prominent convexity. There are 2 different surgical approaches for the therapy of these fractures: closed reduction and open reduction. In the open reduction 2 or 3 fixation points with related incisions are usually necessary in dislocated fractures: osteosynthesis must be performed starting from zygomaticofrontal suture when dislocated at this site, followed by zygomatic body fixation on the anterior sinus wall, anterior orbital floor margin fixation, and finally orbital floor reconstruction in case of eye globe dislocation with diplopia...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27999596/traumatic-pseudoaneurysm-of-the-internal-maxillary-artery-a-rare-life-threatening-hemorrhage-as-a-complication-of-maxillofacial-fractures
#9
E Nastro Siniscalchi, L Catalfamo, A Pitrone, R Papa, F Famà, G Lo Giudice, G Cervino, M Cicciu, F S De Ponte
Pseudoaneurysm of the internal maxillary artery due to a traumatic event is a rare condition. Pseudoaneurysms are usually directly produced by arteries break with extravasation of blood. The compressed perivascular tissue forms the wall of aneurysmal sac. Then, this sac gradually expands and can be damaged. It is rare to see pseudoaneurysms of IMA. They are usually associated with fracture of the neck of the mandible. To the best of our knowledge the pseudoaneurysm of the internal maxillary artery related to maxillofacial trauma is an event extremely rare in the literature and if not quickly managed can lead to the patient's death...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27990507/four-mm-long-versus-longer-implants-in-augmented-bone-in-atrophic-posterior-jaws-4-month-post-loading-results-from-a-multicentre-randomised-controlled-trial
#10
Marco Esposito, Giovanni Zucchelli, Carlo Barausse, Roberto Pistilli, Anna Trullenque-Eriksson, Pietro Felice
PURPOSE: To evaluate whether 4-mm long dental implants could be an alternative to augmentation with equine bone blocks and the placement of at least 10-mm long implants in atrophic posterior jaws. MATERIALS AND METHODS: Forty patients with atrophic posterior (premolar and molar areas) mandibles having 5 to 6 mm bone height above the mandibular canal and 40 patients with atrophic maxillae having 4 to 5 mm below the maxillary sinus, were randomised according to a parallel group design to receive one to three 4...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27986471/retrospective-clinical-study-of-maxillary-sagittal-fractures-predictors-of-postoperative-outcome
#11
Krishna Prasad Regmi, JunBo Tu, SuMeng Ge, ChengQun Hou, XiaoYi Hu, ShiXian Li, JingTing Du
PURPOSE: Because of less attention to the sagittal component of maxillary fractures, these fractures are often misdiagnosed and the reduction leading to maxillary transverse discrepancies is missed. Therefore, the purpose of this study was to identify factors associated with good or adverse postoperative outcomes of maxillary sagittal fractures. MATERIALS AND METHODS: This study was a single-center retrospective cohort study. The sample was composed of cases of maxillary sagittal fractures treated at the Department of Oral and Maxillofacial Surgery, Craniomaxillofacial Trauma Unit of Xi'an Jiaotong University (Xi'an, China) from January 2008 through December 2013...
November 23, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27967312/retrospective-survival-study-of-trabecular-tantalum-implants-immediate-flapless-placement-in-posterior-extraction-sockets
#12
Edgard El Chaar, Alejandro Castaà  O
A retrospective review of patient records was conducted in a single private practice to evaluate the efficacy of immediately placing a novel implant design in posterior jaw locations using a flapless technique. Forty-two patients (22 males, 20 females) with a mean (SD) age of 60.2 (7.6) years (range = 31-68) presented with 1-2 non-restorable molar (maxillary = 14; mandibular = 8) or premolar (maxillary = 20; mandibular = 1) teeth compromised by periodontal disease, endodontic failure, root resorption, root fracture or severe caries...
December 14, 2016: Journal of Oral Implantology
https://www.readbyqxmd.com/read/27930464/nasal-airway-evaluation-after-le-fort-i-osteotomy-combined-with-septoplasty-in-patients-with-cleft-lip-and-palate
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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