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Mandibular fracture

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https://www.readbyqxmd.com/read/29225649/incidence-of-dentinal-defects-and-vertical-root-fractures-after-endodontic-retreatment-and-mechanical-cycling
#1
Mariana De Carlo Bello, Rafael Pillar, Pauline Mastella Lang, Carina Michelon, Ricardo Abreu da Rosa, Carlos Alexandre Souza Bier
Introduction: The aim of this study was to evaluate the incidence of dentinal defects and vertical root fractures (VRFs) after endodontic retreatment and mechanical cycling (MC). Methods and Materials: Two hundred mandibular premolars were selected. Forty teeth were left unprepared (control group). The remaining 160 root canals were prepared with ProTaper instruments and filled by using two different techniques [eighty with lateral compaction (LC) and eighty with single-cone (SC)]...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/29223659/complications-in-the-treatment-of-mandibular-condylar-fractures-surgical-versus-conservative-treatment
#2
REVIEW
Iván García-Guerrero, Juan M Ramírez, Rafael Gómez de Diego, José M Martínez-González, María S Poblador, José L Lancho
OBJECTIVES: In the present article, we aim to review the main intra- and post-operative complications associated with two different therapeutic approaches for treating mandibular condylar fractures: conservative (CTR) and surgical treatment (ORIF, Open Reduction and Internal Fixation). MATERIAL AND METHODS: We have carried out a retrospective, meta-analytic, observational study using literature review, covering the period between 2000- September 2017. The data obtained were processed using statistical software SPSS v...
December 6, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29215444/mandibular-reconstruction-by-osteogenic-distraction-due-to-two-different-injuries
#3
Guilherme Dos Santos Trento, José Maurício Dos Santos Nunes Reis, Eduardo Hochuli-Vieira, Valfrido Antônio Pereira-Filho
Varied factors, whether intrinsic or extrinsic, may lead to a decrease in the bone volume of the jaws. Trauma and pathology can be listed as examples of such factors. The aim of this study is to present the osteogenic distraction technique as alternative to augmentation of low mandibular bone volume caused by different etiologies. The first case reports a mandibular marginal resection of ameloblastoma and the second one reports a male patient presenting mandibular fracture sequelae. Both cases were treated according to the osteogenic distraction technique...
December 6, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29211352/histopathological-evaluation-of-the-effect-of-locally-administered-strontium-on-healing-time-in-mandibular-fractures-an-experimental-study
#4
Kasım Durmuş, Nergiz Hacer Turgut, Mehtap Doğan, Ersin Tuncer, Hatice Özer, Emine Elif Altuntaş, Melih Akyol
BACKGROUND: Mandibular fractures are the most common facial fractures. They can be treated by conservative techniques or by surgery. The authors hypothesized that the application of a single local dose of strontium chloride would accelerate the healing of subcondylar mandibular fractures, shorten the recovery time and prevent complications. OBJECTIVES: The aim of the present pilot study was to evaluate the effects of a single local dose of strontium chloride on the healing of subcondylar mandibular fractures in rats...
October 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29208487/in-vitro-comparison-of-mechanical-resistance-between-two-straight-plates-and-a-y-plate-for-fixation-of-mandibular-condyle-fractures
#5
Glaciele Maria de Souza, Danillo Costa Rodrigues, Tóride Sebastião Celegatti Filho, Roger William Fernandes Moreira, Saulo Gabriel Moreira Falci
OBJECTIVE: To compare the mechanical resistance of conventional plates with a modified Y-plate in mandibular condyle fracture. MATERIALS AND METHODS: 40 synthetic hemi-mandibular polyurethane replicates were used. Two groups of fixing materials were included: 20 mandibles fixed with 40 straight plates with four roles each (2.0 mm system) and 20 mandibles fixed with 20 Y-shaped plates (2.0 mm system and 1.5 mm thickness). The samples were submitted to linear loading in the following directions: 10 mandibles from each group from lateral to medial and 10 mandibles from each group from anterior to posterior...
November 11, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29207772/comparison-of-pain-relief-from-different-intravenous-doses-of-ketorolac-after-reduction-of-mandibular-fractures
#6
Saeed Nezafati, Reza Khorshidi Khiavi, Seyyed Sina Mirinejhad, Dawood Aghamoh Ammadi, Milad Ghanizadeh
Introduction: Pain is an unpleasant feeling due to tissue destruction, which disturbs an individual's daily routines even at its lowest levels. The majority of surgeons and anaesthesiologists are increasingly trying to administer non-opioid analgesics because excessive use of opioids after surgery results in patient dissatisfaction. Aim: To evaluate the analgesic effect of intravenous injection of different doses of ketorolac at different intervals in patients undergoing surgery for unilateral fractures of the mandible...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29199340/-analysis-of-relative-factors-associated-with-postoperative-infection-of-mandibular-fractures
#7
Si-Ling He, Shui-Sheng Xiao
PURPOSE: To explore risk factors associated with postoperative inflammatory complications(POIC) after rigid internal fixation of mandibular fractures. METHODS: A case-control study was designed and a sample of 447 patients treated with rigid internal fixation for mandibular fractures were selected from January 2009 to December 2015.26 patients developed POIC after treatment were categorized into the experimental group. Twenty-six cases with no complications were enrolled into the control group...
August 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29198481/is-it-better-to-bend-wires-occlusally-or-apically-during-placement-of-arch-bars-for-intermaxillary-fixation
#8
Ashwant Kumar Vadepally, Ramen Sinha
We evaluated 78 patients who had intermaxillary fixation (IMF) of fractured mandibular condyles with arch bars and wires. Depending on whether the wires were bent apically or occlusally during placement of the arch bars, we randomly divided the patients into two groups (n=39 in each), then compared pain, satisfaction with oral hygiene, and complications between the groups at five to six weeks postoperatively when the arch bars were removed. Outcomes were significantly better in the occlusal group than in the apical group...
November 29, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29192625/the-force-required-to-fracture-endodontically-roots-restored-with-various-materials-as-intra-orifice-barriers
#9
E Yasa, H Arslan, B Yasa, M Akcay, M Alsancak, H Hatirli
OBJECTIVE: To evaluate the effect of various materials as intra-orifice barriers on the force required fracture roots. MATERIALS AND METHODS: One hundred-thirty five mandibular premolars were decoronated and prepared up to size #40. The root canals were filled and randomly divided into two control and seven experimental groups (n = 15), as follows: Positive control group (the intra-orifice barrier cavity was not prepared), negative control group (the intra-orifice barrier cavity was prepared, but not filled), filling using glass ionomer cement, nano-hybrid composite resin, short fiber-reinforced composite, bulk-fill flowable composite, MTA Angelus, Micro Mega MTA or Biodentine...
October 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29188647/-experimental-study-on-accelerated-healing-of-jaw-fracture-using-gelatin-sponge-compound-growth-factor
#10
Tang Yanfeng, Chen Jianlin, Zhou Yunbiao
OBJECTIVE: To explore the role and mechanism of drug delivery systems using growth factor combined with gelatin sponge on accelerating the healing of jaw fracture and to seek better treatment of accelerating the maxillofacial fracture. METHODS: About 100 μg recombinant human bone morphogenetic protein (BMP)-2 was completely dissolved in 1 mL recombinant bovine basic fibroblast growth factor (bFGF), and the solution (40 μL) was dropped in gelatin sponge (0.5 cm×0...
October 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29178763/influence-of-different-cavity-preparation-designs-on-fracture-resistance-of-onlay-and-overlay-restorations-using-different-cad-cam-materials
#11
Gizem Ön Salman, Ɣbrahim Halil Tacír, Zelal Seyfioğlu Polat, Afşin Salman
PURPOSE: To evaluate fracture strength of different preparation designed onlay and overlay restorations produced by Computer Aided Design/Computer Aided Manufacturing (CAD/CAM) and three different new ceramic-polymer blocks. METHODS: Ninety-one extracted human mandibular molars were used in this study. Preparations were made as (1) Only functional cusps reduction, (2) Only functional cusps reduction+rounded shoulder finish line, (3) All cusps reduction, or (4) All cusps reduction+rounded shoulder finish line...
June 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178701/fracture-resistance-of-endodontically-treated-mandibular-molars-restored-with-different-intra-radicular-techniques
#12
Nada Alarami, Eshamsul Sulaiman, Afaf Al-Haddad
PURPOSE: To evaluate fracture resistance and failure mode of endodontically-treated mandibular molars restored with different intra-radicular techniques. METHODS: 75 human mandibular molars were randomly divided into five equal groups. Teeth were standardized, endodontically-treated and restored according the assigned group as follows: amalgam core only, prefabricated titanium post in the distal canal and amalgam core, composite core only; fiber post in the distal canal and composite core...
August 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29173854/alignment-efficiency-and-esthetic-performance-of-4-coated-nickel-titanium-archwires-in-orthodontic-patients-over-8%C3%A2-weeks-a-multicenter-randomized-clinical-trial
#13
Aman Ulhaq, Zaid Esmail, Anis Kamaruddin, Sarah Meadows, Jill Daus, Maddalena Vitale, Letizia Perillo, Martyn Sherriff, Dirk Bister
INTRODUCTION: The objective of this 4-arm parallel study was to evaluate the alignment efficiency and esthetic performance of 4 coated nickel-titanium archwires over an 8-week period. METHODS: Patients in the permanent dentition requiring maxillary and mandibular fixed orthodontic treatment with a preadjusted edgewise appliance were eligible for inclusion. Patients attending 4 hospital departments (United Kingdom and Italy) were randomly allocated to 1 of 4 treatment interventions: (1) BioCosmetic (Forestadent, Pforzheim, Germany), 0...
December 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/29173028/easy-debonding-of-ceramic-brackets-bonded-with-a-light-cured-orthodontic-adhesive-containing-microcapsules-with-a-co2-laser
#14
Shiori Arima, Yasuhiro Namura, Takahiko Tamura, Noriyoshi Shimizu
OBJECTIVE: An easy debonding method for ceramic brackets using a light-cured Bis-GMA resin containing heat-expandable microcapsules and CO2 laser was investigated. BACKGROUND: Ceramic brackets are used frequently in orthodontic treatment because of their desirable esthetic properties. However, the application of heavy force to ceramic brackets in debonding can fracture the tooth enamel and ceramic brackets, causing tooth pain. MATERIALS AND METHODS: In total, 60 freshly extracted bovine permanent mandibular incisors were divided randomly into 10 groups of 6 specimens each, corresponding to the number of variables tested...
November 27, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29167712/vertical-root-fracture-initiation-in-curved-roots-after-root-canal-preparation-a-dentinal-micro-crack-analysis-with-led-transillumination
#15
Ramón Miguéns-Vila, Benjamín Martín-Biedma, Purificación Varela-Patiño, Manuel Ruíz-Piñón, Pablo Castelo-Baz
Background: One of the causative factors of root defects is the increased friction produced by rotary instrumentation. A high canal curvature may increase stress, making the tooth more susceptible to dentinal cracks. The purpose of this study was to evaluate dentinal micro-crack formation with the ProTaper NEXT and ProTaper Universal systems using LED transillumination, and to analyze the micro-crack generated at the point of maximum canal curvature. Material and Methods: 60 human mandibular premolars with curvatures between 30-49° and radii between 2-4 mm were used...
October 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29164183/removal-of-a-severely-impacted-mandibular-third-molar-minimizing-the-risks-of-compromised-periodontium-nerve-injury-and-mandibular-fracture
#16
Christos Tsamis, Stylianos Rodiou, Athanasios Stratos, Nikolaos Gkantidis
A technique is presented for severely impacted and dentigerous-cyst-related mandibular third molar removal, avoiding any associated risks. CASE PRESENTATION: A healthy patient complained about unpleasant smell and taste in the mouth and unilateral extraoral palpation of a protuberance, at the right corner of the mandible. Restricted field CBCT showed a severely impacted third molar, which penetrated the inferior cortical bone of the mandibular corner and was associated with a dentigerous cyst that had resorbed considerable bone in the region...
November 21, 2017: Quintessence International
https://www.readbyqxmd.com/read/29148912/influence-of-different-restoration-techniques-on-fracture-resistance-of-root-filled-teeth-in-vitro-investigation
#17
M E Hshad, E E Dalkılıç, G C Ozturk, I Dogruer, F Koray
OBJECTIVE: The purpose of this study was to determine the fracture strength of endodontically treated mandibular premolar teeth restored with composites and different reinforcement techniques. METHODS AND MATERIALS: Forty-eight freshly extracted human mandibular premolar teeth were randomly divided into four groups: group IN, group CR, group FRC, and group PRF. Group IN consisted of teeth with intact crowns and served as the control group. In the other three groups, endodontic treatment was performed and standard mesio-occluso-distal (MOD) cavities were prepared...
November 17, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29142872/isolated-tympanic-plate-fracture-detected-by-cone-beam-computed-tomography-report-of-four-cases-with-review-of-literature
#18
Ashita Ritesh Kalaskar, Ritesh Kalaskar
The tympanic plate is a small part of the temporal bone that separates the mandibular condyle from the external auditory canal. Fracture of this small plate is rare and usually associated with other bony fractures, mainly temporal and mandibular bone. There is a limited amount of literature on this subject, which increases the chance of cases being overlooked by physicians and radiologists. This is further supported by purely isolated cases of tympanic plate fracture without evidence of other bony fractures...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29142870/intracorporeal-reduction-of-condylar-fracture-using-both-pedicled-condylar-and-seperated-ramal-fragments-after-vertical-ramal-osteotomy
#19
Il-Kyu Kim, Jun-Min Jang, Hyun-Young Cho, Ji-Hoon Seo, Dong-Hwan Lee
The aim of this study is to introduce a surgical technique that can maintain blood supply to prevent condylar resorption in the extracorporeal reduction of condylar fracture. Neither the medial pterygoid muscle on the ramal bone nor the lateral pterygoid muscle on the condylar fragment was detached after vertical ramal osteotomy. Thus, reduction was performed in the intracorporeal state. Therefore, blood supply was expected to be maintained to the fragments of both the condylar and ramal bones. On postoperative radiographs, the anatomical outline of the fractured condyle was well restored, and the occlusion was stable...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29142868/protrusive-maxillomandibular-fixation-for-intracapsular-condylar-fracture-a-report-of-two-cases
#20
Yeong Kon Jeong, Won-Jong Park, Il Kyung Park, Gi Tae Kim, Eun Joo Choi
Clinical limitations following closed reduction of an intracapsular condylar fracture include a decrease in maximum mouth opening, reduced range of mandibular movements such as protrusion/lateral excursion, and reduced occlusal stability. Anteromedial and inferior displacement of the medial condyle fragment by traction of the lateral pterygoid muscle can induce bone overgrowth due to distraction osteogenesis between the medial and lateral condylar fragments, causing structural changes in the condyle. In addition, when conventional maxillomandibular fixation (MMF) is performed, persistent interdental contact sustains masticatory muscle hyperactivity, leading to a decreased vertical dimension and premature contact of the posterior teeth...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
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