10,525 results match your criteria mandibular fracture


Clinical Application of PEEK as a Provisional Fixed Dental Prosthesis Retained by Reciprocated Guide Surfaces of Healing Abutments During Dental Implant Treatment.

Int J Oral Maxillofac Implants 2021 May-Jun;36(3):581-586

Purpose: The aim of this study was to evaluate the clinical use of a high-performance polymer, polyether ether ketone (PEEK), as a material for use in provisional fixed dental prostheses (FDPs) that can be retained by reciprocated guide surfaces of hexagonal-shaped healing abutments during dental implant treatment.

Materials And Methods: Patients requiring teeth replacement with dental implants for partially and fully edentulous cases in the maxilla and mandible were included. The provisional FDP was fabricated with hex castable copings and PEEK granules using the lost wax technique. Read More

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Assessment of complications of the open treatment of mandibular condylar fracture.

J Pak Med Assoc 2021 Jun;71(6):1689-1692

Department of Oral and Maxillofacial Surgery, Armed Forces Institute of Dentistry, Rawalpindi, Pakistan.

The objective of our study was to analyze the complications of open treatment of mandibular condylar fractures via various surgical approaches. Thirty-eight patients with 42 fracture sides having moderate to severely displaced condylar fractures were studied. Open treatment was performed, and patients were assessed for complications of open treatment in terms of facial nerve paresis, unaesthetic scar, salivary fistula/sialocele. Read More

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Dental implant placement with inferior alveolar nerve repositioning in severely resorbed mandibles: a retrospective multicenter study of implant success and survival rates, and lower lip sensory disturbances.

Int J Implant Dent 2021 Jun 9;7(1):44. Epub 2021 Jun 9.

S'OS Orthognathic Surgery, Vytenio 22-201, Vilnius, Lithuania.

Background: The purpose of this study was to analyze medium-to-long-term implant success and survival rates, and lower lip sensory disturbance after placement of dental implants with simultaneous inferior alveolar nerve (IAN) repositioning.

Methods: Fifteen patients (3 men, 12 women) treated in two centers were included in this retrospective study. The ages of the participants ranged from 19 to 68. Read More

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Healing of a large avulsed mandibular bony segment: report of a unique case.

Int J Oral Maxillofac Surg 2021 Jun 5. Epub 2021 Jun 5.

Department of Oral and Maxillofacial Surgery, King Edward Medical University/Mayo Hospital, Lahore, Pakistan.

This case report puts an emphasis on retaining and re-fixing any avulsed bony segments in the maxillofacial region and maintaining the periosteal layer whenever possible, especially in young patients. Adequate bony fixation and watertight soft tissue closure are vital components for bone healing. The healing potential of facial bones is much higher as compared to the long bones, due to the superior blood supply. Read More

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Diagnostic accuracy of physical examination findings for midfacial and mandibular fractures.

Injury 2021 May 28. Epub 2021 May 28.

Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands.

Objectives: To assess the diagnostic accuracy of physical examination findings used to identify patients at risk for midfacial or mandibular fractures.

Materials And Methods: A five-year retrospective cohort was constructed from all emergency department patients with a midfacial or mandibular trauma. The sensitivity, specificity, pre-test probability, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio data was calculated for 19 and 14 physical examination findings for midfacial and mandibular fractures respectively. Read More

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Improving mandibular reconstruction by using topology optimization, patient specific design and additive manufacturing?-A biomechanical comparison against miniplates on human specimen.

PLoS One 2021 8;16(6):e0253002. Epub 2021 Jun 8.

Department of Orthopedics and Sports Orthopedics, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany.

In this study, topology optimized, patient specific osteosynthesis plates (TOPOS-implants) are evaluated for the mandibular reconstruction using fibula segments. These shape optimized implants are compared to a standard treatment with miniplates (thickness: 1.0 mm, titanium grade 4) in biomechanical testing using human cadaveric specimen. Read More

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Two methods of evaluating mandibular trabecular pattern in intraoral radiographs and the association to fragility fractures during a 47-year follow up.

Eur J Oral Sci 2021 Jun 8:e12801. Epub 2021 Jun 8.

Division of Family Medicine and Primary Care, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.

In this longitudinal cohort study, we explored the association of fragility fractures to sparse trabecular bone pattern in intraoral radiographs using two methods, a visual and a semi-automated. Our aim was to study both sexes and to include younger age-groups, during a follow-up time of 47 years. The cohort consisted of 837 men and women aged 18-65 years, with intraoral radiographs from 1970-1971. Read More

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Fracture heat map of the facial skull demonstrates a danger zone of concomitant cervical spine injuries.

Sci Rep 2021 Jun 7;11(1):11989. Epub 2021 Jun 7.

Department of Oral- and Maxillofacial Surgery, Facial Plastic Surgery, Dortmund General Hospital, Muensterstrasse 240, 44145, Dortmund, Germany.

Concomitant maxillofacial and cervical spine injuries occur in 0.8-12% of the cases. We examined the relation of injury localization and the probability of cervical spine fracture. Read More

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Impaired Callus Formation in Pathological Mandibular Fractures in Medication-Related Osteonecrosis of the Jaw and Osteoradionecrosis.

J Oral Maxillofac Surg 2021 Apr 28. Epub 2021 Apr 28.

Oral and Maxillofacial Surgery - Imaging and Pathology Research Group, Department of Imaging and Pathology, Faculty of Medicine, University of Leuven and Department of Oral & Maxillofacial Surgery, University of Leuven, Leuven, Belgium.

Purpose: Nonsurgical treatment of mandibular fractures secondary to medication-related osteonecrosis of the jaw (MRONJ) or osteoradionecrosis (ORN) mostly results in nonunion, whereas nonsurgical fracture treatment of atrophic fractures can achieve favorable results in selected cases. The aim of this study was to compare callus formation in pathological mandibular fractures due to MRONJ, ORN, or extreme mandibular atrophy.

Methods: A retrospective cohort study reviewing the medical records of all MRONJ-, ORN-, or atrophy-related fractures treated at the departments of maxillofacial surgery in the Leuven or Lille university hospitals between 2010 and 2019 was undertaken. Read More

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A new classification of mandibular fractures.

Int J Oral Maxillofac Surg 2021 Jun 3. Epub 2021 Jun 3.

Liverpool Head and Neck Centre, Aintree University Hospital NHS Foundation Trust, Liverpool, UK.

There is no accepted method of reporting mandibular fracture that reflects incidence, treatment and outcome for individual cases. As most series include anatomical site only for all fractures, the aim was to establish a new method to report fractures based on a systematic review of the literature and an internal audit. The classification proposed is: Class I; condyle, II; angle, IIc; II+condyle, III; body/symphysis, IIIc; III+condyle, IV; multiple fractures not including condyle, IVc; IV+condyle, V; bilateral condyle±other fracture(s). Read More

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Evaluation of the detectability of early mandible fracture healing findings in terms of vitality aspect by using micro-CT technology in postmortem interval.

Leg Med (Tokyo) 2021 Jun 1;52:101914. Epub 2021 Jun 1.

Ankara University, Faculty of Dentistry, Department of DentoMaxillofacial Radiology, Ankara, Turkey.

The purpose of the present study was to investigate the vitality aspect of mandibular fractures using micro-CT in the analysis of bone mineral density and other bone microstructure trabecular parameters in the postmortem interval. This study included 72 female Wistar rats. In the study groups, the rats' mandibles were first fractured and after three days of living, the rats were sacrificed. Read More

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Fracture of the tibia after a fibula graft for mandibular reconstruction: A rare complication, report of a case.

Clin Case Rep 2021 May 24;9(5):e03987. Epub 2021 May 24.

Department of Oral and Maxillofacial Surgery Leiden University Medical Centre Leiden The Netherlands.

A tibia fracture after a fibula harvest is a rare and serious condition; however, when treated adequately, it has a good outcome. The possibility of a fracture should be kept in mind and other pathology and/or metastasis should be ruled out. Read More

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Identification of malocclusion risk factors after closed treatment of condylar fractures using a novel three-dimensional computed tomography approach.

J Oral Sci 2021 Jun 2. Epub 2021 Jun 2.

Department of Dentistry and Oral Surgery, Tokyo Metropolitan Hiroo Hospital.

The condyle is the most common site of mandibular fracture. In the present study, an attempt was made to utilize three-dimensional computed tomography (3D-CT) images to evaluate mandibular condyle fractures and identify prognostic indicators of malocclusion after closed treatment. Accurate morphometric measurements were performed using 3D-CT images obtained before trauma, after trauma, and after healing. Read More

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Combined Symphyseal and Condylar Fractures: Considerations for Treatment in Growing Pediatric Patients.

Plast Reconstr Surg 2021 Jun 1. Epub 2021 Jun 1.

From the Department of Plastic and Reconstructive Surgery, Johns Hopkins Hospital; the Department of Plastic and Oral Surgery, Boston Children's Hospital; and the Division of Plastic and Reconstructive Surgery, Rush Medical College of Rush University.

Background: Combined symphyseal-condylar mandible fractures are relatively common but difficult to manage in children. This study investigated the cause and management of symphyseal-condylar fractures in pediatric patients.

Methods: This study presents a retrospective review and expert opinion of pediatric symphyseal-condylar mandibular fracture management at the authors' institution between 1990 and 2019. Read More

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Recurrent mandibular fractures: a retrospective study over 17 years on aetiology, demographics, fracture patterns, and management.

Int J Oral Maxillofac Surg 2021 May 29. Epub 2021 May 29.

Department of Oral and Maxillofacial Surgery, Royal Darwin Hospital, Tiwi, Northern Territory, Australia.

Recurrent fractures of the mandible are rare, however in Darwin, Australia, their occurrence is relatively frequent. This retrospective study identified 127 patients with 148 recurrent mandibular fractures treated at Royal Darwin Hospital between 2000 and 2017. Age, sex, ethnicity, marital status, aetiology, risk factors, anatomical location of the fractures, fracture patterns, and management of the fractures were analysed. Read More

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Automatic Detection of Mandibular Fractures in Panoramic Radiographs Using Deep Learning.

Diagnostics (Basel) 2021 May 22;11(6). Epub 2021 May 22.

School of Electronic and Electrical Engineering, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Korea.

Mandibular fracture is one of the most frequent injuries in oral and maxillo-facial surgery. Radiologists diagnose mandibular fractures using panoramic radiography and cone-beam computed tomography (CBCT). Panoramic radiography is a conventional imaging modality, which is less complicated than CBCT. Read More

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Variants and Modifications of the Retroauricular Approach Using in Temporomandibular Joint Surgery: A Systematic Review.

J Clin Med 2021 May 11;10(10). Epub 2021 May 11.

Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland.

Introduction: The retroauricular approach (RA) has been developed in order to expose the temporomandibular joint in a way that minimizes the risk of injury to the facial nerve and masks the postoperative scar. One of its characteristics is an excellent posterolateral view of the mandibular head, which allows for the preservation of the lateral temporomandibular joint ligaments in the course of open intracapsular surgery.

Aim: The aim of this study is to systematically review the currently used variants and modifications of RA. Read More

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A computed tomographic study of endodontic and apical changes in 81 equine cheek teeth with sagittal fractures.

Equine Vet J 2021 Jun 1. Epub 2021 Jun 1.

Royal Veterinary College, Equine Referral Hospital, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL9 6TA, UK.

Background: Sagittal fractures of equine cheek teeth are commonly observed during oral examination. There are few reports on the apical and endodontic pathology associated with such fractures seen during computed tomographic (CT) examination.

Objectives: To document the prevalence of CT changes indicative of apical disease in equine cheek teeth which have suffered a sagittal fracture involving the clinical +/- reserve crown. Read More

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Microvascular reconstruction of the mandible with medial femoral condylar flap for treatment of mandibular non-union.

Int J Oral Maxillofac Surg 2021 May 28. Epub 2021 May 28.

'Facesurgery' Center Parma, Italy.

Mandibular non-union occurs in 2-9% after open reduction and internal fixation of a mandibular fracture (trauma surgery, orthognathic cases, access osteotomy for oncological purposes). The medial femoral condyle (MFC) has emerged more recently as one of the most versatile donor sites in the treatment of challenging bone reconstruction. This is the first description of MFC for treatment of mandibular non-union. Read More

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Identification of novel mutation in RANKL by whole-exome sequencing in a Thai family with osteopetrosis; a case report and review of RANKL osteopetrosis.

Mol Genet Genomic Med 2021 May 30:e1727. Epub 2021 May 30.

Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.

Background: Osteopetrosis is a rare form of skeletal dysplasia characterized by increased bone density that leads to bone marrow failure, compressive neuropathy, and skeletal dysmorphism. Molecular diagnosis is essential as it guides treatment and prognosis. We report Thai siblings with an ultra-rare form of osteopetrosis. Read More

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Follow Up on Simple (Closed) Extraction of Fractured Maxillary Canine Teeth in Domestic Ferrets ().

Front Vet Sci 2021 13;8:677680. Epub 2021 May 13.

Dentistry and Oral Surgery Department, Small Animal Clinic, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia.

Fractured canine teeth (especially maxillary canine teeth) are common in domestic ferrets (). We evaluated (detailed oral/dental and radiographic examination under general anesthesia) 18 domestic ferrets affected by 23 complicated crown fractures of periodontally healthy permanent maxillary canine teeth over a 2-year period. Average age of the ferrets at the time of diagnosis was 2. Read More

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Delayed Diagnosis of Unilateral Mandibular Condylar Fracture in a Posterior Edentulous Patient.

Case Rep Dent 2021 16;2021:5579236. Epub 2021 May 16.

Department of Oral Medicine and Periodontology, Faculty of Dental Sciences, University of Peradeniya, Sri Lanka.

Background: Fractures of the mandible are common in elderly patients, and among them, condylar fractures are the most frequent type. A change in occlusion is the most common physical finding in patients with fractures of the mandible. Therefore, it is challenging to identify mandibular fractures in posterior edentulous patients due to the lack of posterior occlusal contacts. Read More

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Maxillomandibular osteotomy healing in a patient with hypophosphatemic rickets.

Int J Oral Maxillofac Surg 2021 May 25. Epub 2021 May 25.

Oral and Maxillofacial Surgery, NYC Health + Hospitals/Kings County, Brooklyn, NY, USA. Electronic address:

Hypophosphatemic rickets is a hereditary disease of childhood that affects bone metabolism. Patients with this disease can have poor bony healing at growth centers due to impaired mineralization of the cartilaginous bone plates. The orthopedic literature has shown appropriate long bone healing in patients with rickets who are undergoing concurrent medical management. Read More

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Effect of MTA versus CEM apical plugs on fracture resistance of endodontically treated simulated immature teeth restored with cast metal posts: an in-vitro study.

BMC Oral Health 2021 May 28;21(1):280. Epub 2021 May 28.

Department of Pediatric Dentistry, Gorgan School of Dentistry, Golestan University of Medical Sciences, Gorgan, Golestan, Iran.

Background: Endodontically treated immature teeth which are restored with cast metal posts are of the most susceptible teeth to fracture. An apical plug is usually used as root end filling in order to seal the wide apical foramen. The current study was performed to evaluate the effect of different apical plug materials (MTA and Calcium enriched mixture cement) at varied thicknesses on fracture resistance of teeth restored with cast metal posts. Read More

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A Retrospective Evaluation of the Prevalence of Cracked Teeth Among an Adult Population in Nevada.

Eur Endod J 2021 Apr 9. Epub 2021 Apr 9.

Department of Biomedical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, Nevada, United State of America.

Objective: To identify the distribution and characteristics of cracked teeth in a Southern Nevada population attending the dental clinics of the School of Dental Medicine, University of Nevada, Las Vegas (SDM, UNLV).

Methods: A retrospective keyword search of the clinical notes of SDM, UNLV patient charts in AxiUm™ was performed using the search terms 'crack' and 'fracture' to discern the number of patients that had clinically identifiable teeth with cracks, and which teeth (if any) had documented symptoms consistent with the cracks. The inclusion criteria for the record search were individuals ≥18 years old, seen at the dental clinic between 2010 and 2018. Read More

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Expressions of cytokeratin 14 and proliferating cell nuclear antigen in the Hertwig's epithelial root sheath of a Vps4b knockout mouse.

Hua Xi Kou Qiang Yi Xue Za Zhi 2021 Jun;39(3):274-278

Dept. of Stomatology, The First Affiliated Hospital of Zhengzhou University, Henan Provincial Stomatological Hospital, Zhengzhou 450052, China.

Objectives: The effect of Vps4b gene mutation on the expressions of cytokeratin 14 (CK14) and proliferating cell nuclear antigen (PCNA) in the Hertwig's epithelial root sheath (HERS) is investigated.

Methods: The bilateral mandibular tissues of mouse on postnatal days 5, 9, 11, 15, and 19 were removed. The mandibular first molar tissue sections were obtained after paraffin embedding. Read More

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Biomechanical Assessment of the Validity of Sheep as a Preclinical Model for Testing Mandibular Fracture Fixation Devices.

Front Bioeng Biotechnol 2021 6;9:672176. Epub 2021 May 6.

Julius Wolff Institute, Charité - Universitätsmedizin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.

Mandibular fracture fixation and reconstruction are usually performed using titanium plates and screws, however, there is a need to improve current fixation techniques. Animal models represent an important step for the testing of new designs and materials. However, the validity of those preclinical models in terms of implant biomechanics remains largely unknown. Read More

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Comparison of lag screws and double Y-shaped miniplates in the fixation of anterior mandibular fractures.

Authors:
Lydia Melek

World J Methodol 2021 May 20;11(3):88-94. Epub 2021 May 20.

Department of Oral and Maxillofacial Surgery, Alexandria University, Alexandria 21411, Egypt.

Background: Mandibular fractures constitute about 80.79% of maxillofacial injuries in Alexandria University, either as isolated mandibular fractures or as a part of panfacial fractures. The combination of symphyseal and parasymphyseal fractures represent 47. Read More

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Antibiotic prophylaxis in oral and maxillofacial surgery: a systematic review.

Br J Oral Maxillofac Surg 2020 Sep 23. Epub 2020 Sep 23.

Royal Perth Hospital, Department of Oral and Maxillofacial Surgery, Oral Health and Equity, Department of Human Sciences, Victoria Square, Perth, WA 6000. Electronic address:

Surgical site infections are a complication of oral and maxillofacial procedures, with the potential for significant morbidity and mortality. Use of preoperative, perioperative, and postoperative antibiotic prophylaxis to reduce the incidence of surgical site infections must be balanced with considerations of a patients' risk of antibiotic-related adverse events. This review aimed to provide evidence-based recommendations for antibiotic prophylaxis. Read More

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September 2020

The effect of calcium hydroxide on dentine composition and root fracture resistance of human teeth: An in vitro study.

Eur J Oral Sci 2021 May 20:e12798. Epub 2021 May 20.

Department of Allied Medical Sciences, Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan.

The purpose of this study was to evaluate the effect of calcium hydroxide [Ca(OH) ] on dentine composition and root fracture resistance. Root canals of fifty extracted mandibular premolars were prepared and divided into five groups (N = 10). Canals were filled with non-setting Ca(OH) or left empty and were subsequently stored in phosphate buffered saline for 7, 14, 30, or 90 days, respectively. Read More

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