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Maxillary fractures

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https://www.readbyqxmd.com/read/29330599/infraorbital-foramen-localization-in-orbitozygomatic-fractures-a-ct-study-with-intraoperative-finding
#1
Mohammad Waheed El-Anwar, Ahmed Hassan Sweed
OBJECTIVE: The aim of this study was to assess the infraorbital foramen (IOF) using CT in patients with Zygomaticomaxillary complex (ZMC) fractures (midface fracture). PATIENTS AND METHODS: This prospective study was carried out on 49 patients had ZMC fractures (98 sides) and 27 patients (54 sides) with craniomaxillofacial fractures rather than fractured ZMC as a control. Using CT, position of IOF was documented on 3D view in relation to inferior orbital rim, tooth root relation and finally with a novel imaginary line passing between anterior nasal spine and whitnall tubercle...
January 12, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29326505/influence-of-intracanal-irrigants-on-coronal-fracture-resistance-of-endodontically-treated-and-bleached-teeth-an-in-vitro-study
#2
Maryam Khoroushi, Fatemeh Tavakol, Farinaz Shirban, Sanaz Ziaei
Background: Irrigation has a key role in the success of endodontic treatment. Intracanal irrigant solutions have adverse effects on the physical properties of dentin. Aim: The present study aimed to evaluate the effect of different irrigation protocols on coronal fracture resistance of endodontically treated teeth undergoing bleaching treatment. Design and Materials and Methods: Access cavities were prepared in 120 maxillary premolars which were divided into two groups (n = 60) - Group A: nonbleached, Group B: bleached (B)...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29323779/effect-of-different-liners-on-fracture-resistance-of-premolars-restored-with-conventional-and-short-fiber-reinforced-composite-resins
#3
Fereshteh Shafiei, Maryam Doozandeh, Dordaneh Ghaffaripour
PURPOSE: To see whether applying four different liners under short fiber-reinforced composite (SFRC), everX Posterior, compared to conventional composite resin, Z250, affected their strengthening property in premolar MOD cavities. MATERIALS AND METHODS: Mesio-occluso-distal (MOD) cavities were prepared in 120 sound maxillary premolars divided into 10 groups (n = 12) in terms of two composite resin types and 4 liners or no liner. For each composite resin, in 5 groups no liner, resin-modified glass ionomer (RMGI), conventional flowable composite (COFL), self-adhesive flowable composite resin (SAFL), and self-adhesive resin cement (SARC) were applied prior to restoring incrementally...
January 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29320322/multidetector-ct-of-midfacial-fractures-classification-systems-principles-of-reduction-and-common-complications
#4
David Dreizin, Arthur J Nam, Silviu C Diaconu, Mark P Bernstein, Uttam K Bodanapally, Felipe Munera
The advent of titanium hardware, which provides firm three-dimensional positional control, and the exquisite bone detail afforded by multidetector computed tomography (CT) have spurred the evolution of subunit-specific midfacial fracture management principles. The structural, diagnostic, and therapeutic complexity of the individual midfacial subunits, including the nose, the naso-orbito-ethmoidal region, the internal orbits, the zygomaticomaxillary complex, and the maxillary occlusion-bearing segment, are not adequately reflected in the Le Fort classification system, which provides only a general framework and has become less relevant in contemporary practice...
January 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29319378/nonhealing-orbital-floor-fracture-in-a-pediatric-patient-a-unique-presentation-of-pseudo-silent-sinus-syndrome
#5
Siwei Zhou, Katherine Duncan, S Tonya Stefko
Silent sinus syndrome was first described as spontaneous enophthalmos and hypoglobus associated with subclinical maxillary sinusitis without prior trauma or surgery. This clinical entity has later been described after trauma in which damage to the ostiomeatal complex leads to atelectasis of the maxillary sinus. We report a case of a 14-year-old boy who presented 4 years after sustaining a non-operative orbital floor fracture with enophthalmos and transient diplopia. Computed tomography (CT) demonstrated enlargement in size of the original orbital floor fracture and bilateral maxillary sinus disease...
January 10, 2018: Orbit
https://www.readbyqxmd.com/read/29311428/fracture-strengths-of-endocrown-restorations-fabricated-with-different-preparation-depths-and-cad-cam-materials
#6
Burcu Kanat-Ertürk, Serkan Saridağ, Ege Köseler, Dilek Helvacioğlu-Yiğit, Egemen Avcu, Yasemin Yildiran-Avcu
The objectives of this study were to compare the fracture strength of endocrown restorations fabricated with different preparation depth and various CAD/CAM ceramics, and to assess the fracture types. Endodontically treated 100 extracted human permanent maxillary centrals were divided into two preparation depth groups as short (S: 3-mm-deep) and long (L: 6-mm-deep), then five ceramic subgroups, namely: feldspathic-ceramic (Vita Mark II-VM2), lithium-disilicate glass-ceramic (IPS e.max CAD-E.max), resin-ceramic (LAVA Ultimate-LU), polymer infiltrated ceramic (Vita Enamic-VE) and monoblock zirconia (inCoris TZI-TZI) (n=10/subgroup)...
December 29, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29301094/induced-post-traumatic-apexification-20-year-follow-up-and-morphological-study-after-new-fracture
#7
Federica Fonzar, Leopoldo Forner, Riccardo Fabian-Fonzar, Carmen Llena
Apexification is an endodontic technique used in immature necrotic teeth, the primary goal of which is to induce a calcified barrier in roots with open apices and to promote the continuation of apical root development. A 7-year-old patient with a coronal fracture in a maxillary central incisor was treated with an apexification technique using calcium hydroxide. The apical closure was obtained after one year, then a permanent root canal filling was performed. The tooth was monitored for a period of 20 years, up to when a trauma caused its extraction...
January 1, 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29288602/the-types-and-management-of-dental-trauma-during-military-service-in-finland
#8
Atte Antikainen, Pertti Patinen, Jari Päkkilä, Leo Tjäderhane, Vuokko Anttonen
All Finnish males must attend compulsory military service that lasts from six months to one year. About 25 000 males (approximately 80% of each age cohort) and 400 volunteer females complete the service annually. The aim of the study was to investigate the types of dental trauma occurring among Finnish conscripts during their military service. The article also focused on how dental traumas is are treated in the Finnish Defence Forces MATERIAL AND METHODS: All dental records in the Defence Forces' patient register concerning dental trauma during the years 2011 and 2012 were analysed by tooth number, treatment procedures and number of visits RESULTS: According to the patient register, 361 conscripts suffered an oral trauma during their military service; thus, the average annual incidence was 7...
December 30, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/29285154/impact-of-cusp-inclinations-on-dental-fractures-in-cracked-tooth-syndrome-model-and-relevant-risk-evaluation
#9
Nina Xie, Penglai Wang, Cui Wu, Wenting Song, Wen Wang, Zongxiang Liu
We explored the impact of cusp inclinations on dental fractures in cracked tooth syndrome model and formulated corresponding risk scale. Forty maxillary premolars were randomized into four groups for cusp inclination measurements by digital radiovisiography (RVG). For cracked tooth models, buccal and palatal cusp inclinations were achieved by grinding in groups I (59°-50°), II (64°-55°) and III (69°-60°), with group IV as blank control. All groups underwent compression loading test, with fracture levels recorded for statistical analysis...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29284983/biological-rehabilitation-of-complex-oblique-crown-root-fracture-segment-reattachment
#10
Iswarya R Raju, C P Sreedev, Sebeena Mathew, N T Deepa, K Karthick, T Boopathi
Dental trauma can predominantly affect the maxillary anteriors. Trauma can occur to any age group due to accidents, assaults, or leisure activities. The goal of the treatment for traumatically injured teeth is to return the teeth to acceptable function and form. In this case presentation, the endodontic and esthetic treatment approach of crown fracture is presented.
November 2017: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/29282172/management-of-a-permanent-maxillary-lateral-incisor-with-vital-pulp-and-necrotic-dens-invaginatus-type-iii
#11
Thais Rodrigues Campos Soares, Luciana Pereira da Silva, Patrícia de Andrade Risso, Lucianne Cople Maia, Laura Guimarães Primo
This is a case report on the management of a vital lateral incisor with a radiolucent cervical area associated with the presence of necrotic pulp due to a dens invaginatus (DI) type III. A nine-year-old boy presented to a university pediatric dental clinic with dental trauma. The examination showed poor oral hygiene, an uncomplicated fracture in the permanent maxillary left central incisor, and a fistula near the permanent maxillary right lateral incisor. A radiograph showed that the right lateral incisor had incomplete root development and a type III DI...
September 15, 2017: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/29275849/management-of-intruded-immature-maxillary-central-incisor-with-pulp-necrosis-and-severe-external-resorption-by-regenerative-approach
#12
Giorgos N Tzanetakis
INTRODUCTION: Intrusive luxation is one of the most severe traumatic injuries of permanent teeth that may adversely affect the pulp and the periodontium. Pulp necrosis and root resorption are the main pathologic entities associated with this injury. The present report describes the endodontic management of an intruded immature maxillary central incisor presented with pulp necrosis and severe inflammatory root resorption by using the regenerative approach. METHODS: A 7-year-old boy with dental trauma to the anterior maxillary region was referred for the management of a traumatized maxillary central incisor...
December 21, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29260043/oculocardiac-reflex-elicited-by-orbital-floor-fracture-and-inferior-globe-displacement
#13
Chau M Pham, Steven M Couch
Purpose: To review the physiology, presentation and management of the oculocardiac reflex (OCR) by describing a case of the OCR associated with an orbital foreign body and complete ocular prolapse through a large orbital floor fracture in a 40-year-old male following a motor vehicle accident. Observations: The patient demonstrated marked bradycardia and hypotension necessitating intubation and medical therapy for autonomic shock. A computed tomography (CT) showed a total blow out floor fracture and complete dislocation of a radiographically intact globe with uninterrupted rectus muscle attachments into the left maxillary sinus...
June 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29258696/residual-stress-of-porcelain-fused-to-zirconia-3-unit-fixed-dental-prostheses-measured-by-nanoindentation
#14
Vinicius P Fardin, Estevam A Bonfante, Paulo G Coelho, Malvin N Janal, Nick Tovar, Lukasz Witek, Dimorvan Bordin, Gerson Bonfante
OBJECTIVE: To evaluate the residual stress (nanoindentation based on hardness) of fatigued porcelain-fused to zirconia 3-unit fixed dental prostheses (FDP) with different framework designs. METHODS: Twenty maxillary 3-unit FDP replacing second-premolar (pontic) were fabricated with conventional framework-design (even-thickness of 0.5mm and 9mm2 connector area) and modified framework-design (thickness of 0.5mm presenting lingual collar connected to proximal struts and 12mm2 connector area)...
December 16, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29249875/evaluation-of-fracture-resistance-of-ceramic-veneers-with-different-preparation-designs-and-loading-conditions-an-in-vitro-study
#15
Aman Arora, Viram Upadhyaya, Sheen J Arora, Prachi Jain, Avneet Yadav
Purpose: The purpose of this study was to evaluate the effect of incisal butt joint and incisal overlap design on the fracture resistance of ceramic veneers under two different loading conditions, i.e., 125° and 60° representing protrusive and intercuspal movements, respectively. Materials and Methods: Thirty-two maxillary central incisors were divided into two groups of sixteen specimens each and were prepared with incisal butt joint and incisal overlap design...
October 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29243185/effect-of-fiber-post-length-and-abutment-height-on-fracture-resistance-of-endodontically-treated-premolars-prepared-for-zirconia-crowns
#16
Jie Lin, Jukka Pekka Matinlinna, Akikazu Shinya, Michael George Botelho, Zhiqiang Zheng
The purpose of this study was to compare the fracture resistance, mode of fracture, and stress distribution of endodontically treated teeth prepared with three different fiber post lengths and two different abutment heights, using both experimental and finite element (FE) approaches. Forty-eight human maxillary premolars with two roots were selected and endodontically treated. The teeth were randomly distributed into six equally sized groups (n = 8) with different combinations of post lengths (7.5, 11, and 15 mm) and abutment heights (3 and 5 mm)...
December 14, 2017: Odontology
https://www.readbyqxmd.com/read/29225650/maintenance-of-pulp-after-horizontal-root-fractures-in-three-maxillary-incisors-a-thirteen-year-evaluation
#17
Vânia Portela Ditzel Westphalen, Everdan Carneiro, Luiz Fernando Fariniuk, Ulisses Xavier da Silva Neto, Fernando Henrique Westphalen, Alexandre Kowalczuck
This case report documents the clinical approach adopted for three upper incisors with horizontal root fracture in the middle or cervical third. The proposed procedures involved maintaining pulp vitality and periodontal stability of the fractured teeth with 13 years of follow-up.
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29217962/spectrophotometric-evaluation-of-crown-fragment-a-year-after-reattachment-using-fiber-reinforced-post-a-case-report
#18
Fundaoğlu Funda Küçükekencı, Ahmet Serkan Küçükekencı
Background: Crown fracture is the most common type of fracture and frequently affects the anterior teeth. Crown fractures have been treated in several ways depending on the location and kind of fracture. This case emphasizes reattachment of fractured fragments using fiber-reinforced post. Also this case report underlines the related aesthetic concerns of reattaching of the fractured fragment. Case Report: Intraorally, examination revealed a complicated crown-root fracture of the left maxillary central (#21) and lateral incisor (#22)...
September 2017: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/29208400/influence-of-cervical-preflaring-on-the-incidence-of-root-dentin-defects
#19
Álvaro Henrique Borges, Monique Sobral Damião, Thiago Machado Pereira, Gilberto Siebert Filho, Fabio Luis Miranda-Pedro, Welligton Luiz de Oliveira da Rosa, Evandro Piva, Orlando Aguirre Guedes
INTRODUCTION: This study evaluated the influence of cervical preflaring on the incidence of root dentin defects after root canal preparation. METHODS: Extracted human maxillary central incisors were selected and allocated to 1 control group and 12 experimental groups (n = 15). Teeth in the control group were left unprepared, whereas the others were prepared using 2 reciprocating single-file systems (Reciproc and WaveOne [WO]), 3 full-sequence rotary systems (ProTaper Universal, ProTaper Next [PTN], and ProFile), and K-files driven by an oscillatory system, with and without cervical preflaring...
December 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29207837/fracture-resistance-of-endodontically-treated-teeth-restored-with-biodentine-resin-modified-gic-and-hybrid-composite-resin-as-a-core-material
#20
Dayalan Subash, Krishnamma Shoba, Shibu Aman, Srinivasan Kumar Indu Bharkavi, Vijayan Nimmi, Radhakrishnan Abhilash
Introduction: The restoration of a severely damaged tooth usually needs a post and core as a part of treatment procedure to provide a corono - radicular stabilization. Biodentine is a class of dental material which possess high mechanical properties with excellent biocompatibility and bioactive behaviour. The sealing ability coupled with optimum physical properties could make Biodentine an excellent option as a core material. Aim: The aim of the study was to determine the fracture resistance of Biodentine as a core material in comparison with resin modified glass ionomer and composite resin...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
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