scholarly journals Mandibular Fractures: Pre-Operative Panoramic Radiography and Duplication Sign Patterns

2021 ◽  
Vol 5 (5) ◽  
pp. 57-66
Author(s):  
Oleksandr Nosyr ◽  
Serhii Khrulenko
Keyword(s):  
Cortical Bone ◽  
Management Strategy ◽  
Panoramic Radiography ◽  
Mandibular Fracture ◽  
Fracture Line ◽  
Mandibular Fractures ◽  
Panoramic Radiographs ◽  
Sign Patterns ◽  
Precise Diagnosis ◽  
Mandible Fractures

The purpose of this essay is to present the multiple patterns of the duplication sign at the mandibular fracture line/gap visualized at the panoramic radiography as two-line fracture gap or pseudocomminuted fracture. We retrospectively reviewed the orthopantomography of patients with mandible fractures and presented nine patients with 12 duplication signs (also known as lambda course fracture line). On panoramic radiographs the fracture line/gap with duplication sign is visualized as two-line cortical bone discontinuity with or without dislocation due to the fact that the fracture gap runs asymmetrically on the external and internal cortical plates of the jaw. Knowledge of duplication sign patterns, artifacts is also crucial for the precise diagnosis and choice of correct management strategy.

scholarly journals Teeth in the Line of Fracture: To Retain or Remove?

2010 ◽  
Vol 3 (4) ◽  
pp. 177-184 ◽  
Author(s):  
Jimson Samson ◽  
Reena John ◽  
Shalini Jayakumar
Keyword(s):  
Fracture Site ◽  
Mandibular Fracture ◽  
Fracture Line ◽  
Panoramic Radiographs ◽  
Fracture Displacement ◽  
Pulp Vitality ◽  
Relationship Of ◽  
The Relationship

The purpose of this study was to analyze mandibular fracture site, relationship of the fracture line to the periodontium, vitality of teeth, displacement of the fracture segments and their implications, and determine whether to retain or remove the teeth in the fracture line. Fifty patients with 62 fractures were involved in this study. An electric pulp tester was used to measure the pulpal response. The degree of fracture displacement and the relationship of the fracture line to the periodontium were evaluated using panoramic radiographs. Fractures of the parasymphysis region constituted a majority of 60.87% in the gross displacement category. Four of 50 patients showed no response presurgically and minimal response postoperatively on pulp vitality testing. Patients with teeth in the fracture line showing no response on pulp vitality testing should be advised extraction to avoid further complications.

scholarly journals Recovery of Post-Traumatic Temporomandibular Joint after Mandibular Fracture Immobilization: A Literature Review

2021 ◽  
Vol 11 (21) ◽  
pp. 10239
Author(s):  
Carmen Gabriela Stelea ◽  
Doriana Agop-Forna ◽  
Raluca Dragomir ◽  
Codrina Ancuţa ◽  
Roland Törok ◽  
...  
Keyword(s):  
Temporomandibular Joint ◽  
Real Life ◽  
Mandibular Fracture ◽  
Temporomandibular Joint Disorders ◽  
Treatment Modalities ◽  
Mandibular Fractures ◽  
Traumatic Injuries ◽  
Joint Fractures ◽  
Post Traumatic ◽  
Mandible Fractures

Considered as one of the most common traumatic injuries of the maxillofacial region, mandibular fractures remain among the complex causes of temporomandibular joint disorders (TMDs). Due to the complexity of the temporomandibular joint, the management of TMDs represents a challenge in real-life practice; although many treatment modalities have already been proposed, ranging from conservative options to open surgical procedures, a consensus is still lacking in many aspects. Furthermore, despite continuous improvement of the management of mandible fractures, the duration of immobilization and temporary disability is not reduced, and the incidence of complications remains high. The aim of the present study is to (i) review anatomophysiological components of temporomandibular joint; (ii) review concepts of temporomandibular joint fractures; and (iii) describe methods of the recovery of the temporomandibular joint after mandibular fracture immobilization.

scholarly journals A retrospective study of 109 dogs with mandibular fractures

2013 ◽  
Vol 26 (01) ◽  
pp. 01-05 ◽  
Author(s):  
H. de Rooster ◽  
S. M. Ferreira ◽  
G. Steenkamp ◽  
A. M. Kitshoff
Keyword(s):  
South Africa ◽  
Treatment Options ◽  
Small Animal ◽  
Fracture Morphology ◽  
Mandibular Fracture ◽  
Fracture Repair ◽  
Fracture Line ◽  
Mandibular Fractures ◽  
Anatomical Location ◽  
New Treatment

SummaryObjective: To determine patient factors and fracture morphology of dogs presented with mandibular fractures to a small animal referral centre in South Africa.Methods: Patient data on age, sex, breed and aetiology of dogs with mandibular fractures were recorded. The fractures were classified according to the anatomical location, displacement, fracture type, fracture line direction, periodontal pathology, and whether there were teeth in the fracture line or not by evaluation of preoperative radiographs. Clinical observations indicated whether these fractures were open or closed.Results: In total, 109 dogs with 135 mandibular fractures were included in the study. Small breed dogs and dogs less than eight months of age predominated (102/109). Dog fights were the most common aetiology in this study (68/109). The molar region was the most commonly affected region (56/135). Evaluation of the radiographs revealed that transverse (73/135), relatively unstable (116/135), and displaced (112/135) fractures were the most common. The majority of fractures involved teeth in the fracture line (100/135), with the first molar frequently involved (54/135). The majority of fractures were open (104/135).Clinical significance: The results obtained from this study may be used to guide patient and fracture morphology selection in biomechanical studies of mandibular fracture repair techniques. Screening of this patient population may inspire the search for new treatment options for mandibular fracture repair in South Africa.

scholarly journals Atrophic mandibular fracture treatment: prototyping as a tool in surgical planning

2020 ◽  
Vol 9 (9) ◽  
pp. e796997986
Author(s):  
Reginaldo Fernandes da Silva ◽  
Rebeca Valeska Soares Pereira ◽  
Joana de Ângelis Alves Silva ◽  
Gustavo José de Luna Campos ◽  
Mário César Furtado da Costa ◽  
...  
Keyword(s):  
Surgical Planning ◽  
Clinical Case ◽  
Mandibular Fracture ◽  
Facial Trauma ◽  
Mandibular Fractures ◽  
Surgical Time ◽  
3D Technology ◽  
Mandible Fracture ◽  
Intraoperative Period ◽  
Mandible Fractures

Introduction: Atrophic mandibular fractures are injuries found in old age due to facial trauma. Its treatment is a challenge, even for experienced surgeons, due to the different approaches that can be taken from clinical decisions. Taking into consideration the limitations that the age presented by most of the affected patients brigs, there are devices that stand out by seeking benefits in terms of predictability and time gain in the intraoperative period. The additive manufacturing is a valuable resource in the surgical planning and rehabilitation of these patients. Objective: To expose a clinical case that demonstrates the success in the use of surgical planning through a prototype printed in 3D technology. Clinical case: Elderly woman, 75 years old, victim of a fall from her own height who had a bilateral atrophic mandible fracture due to facial trauma. The surgical procedure was planned using a prototype printed in 3D technology providing predictability and reduced surgical time. The patient evolved in the postoperative period without complaints, with function immediately restores and without signs of infection or plate exposure. Conclusions: Atrophic mandible fractures are still related to a challenging treatment, therefore, adequate surgical planning and the use of auxiliary strategies such as 3D prototyping provide greater predictability of results, as well as time gain during the intraoperative.

scholarly journals Evaluation of the effectiveness of early or delayed treatment upon healing of mandibular fractures: A retrospective study

2015 ◽  
Vol 09 (01) ◽  
pp. 087-091 ◽  
Author(s):  
Giath Gazal
Keyword(s):  
Clinical Trial ◽  
Substance Abuse ◽  
Retrospective Study ◽  
Mandibular Fracture ◽  
Mandibular Fractures ◽  
Operating Theater ◽  
Delayed Treatment ◽  
Treatment Analysis ◽  
Mandible Fractures ◽  
Fracture Types

ABSTRACT Objectives: This study was aimed to assess the impacts of delay treatment of mandibular fracture and its complications. In addition risk variables related such as time to repair, fracture types, substance abuse, causes, surgical management, muddling or complications and duration of clinic stay were also evaluated. Materials and Methods: The data of patients attending the Newcastle General Hospital, UK for the management of mandibular fractures were probed. This retrospective clinical trial conducted over 6 months, included 91 patients attending trauma operating theatre during weekdays or weekends. Data were analyzed for time to admission and treatment and its relationships to various factors using SPSS version 20 (SPSS Inc., Chicago, IL). Results: Time to treatment from the point of admission was 31.50 ± 3.83 h during week days that has been significantly more for patients attending the hospital at weekends or nights. Similar trend was observed for total summative time from the incident to treatment analysis. Conclusions: This investigation has demonstrated that the rate of infection and postoperative complications following surgical treatment of mandible fractures can be eased off by reducing the waiting time from presentation to the emergency and to the operating theater.

scholarly journals Pediatric mandibular fracture therapy: A case report

2020 ◽  
Vol 77 (6) ◽  
pp. 647-650
Author(s):  
Ivan Tusek ◽  
Miroslav Ilic ◽  
Jasmina Tusek ◽  
Stojan Ivic ◽  
Branislav Tusek
Keyword(s):  
Case Report ◽  
Developmental Disorders ◽  
Mouth Opening ◽  
Treatment Method ◽  
Mandibular Fracture ◽  
Fracture Line ◽  
Mixed Dentition ◽  
Dental Occlusion ◽  
Mandibular Fractures ◽  
Efficient Treatment

Introduction. Frequency of pediatric mandibular fractures is relatively uncommon. Apart from rare exceptions, there is minimal invasive access in the treatment of those injuries in order to avoid the future developmental disorders. Case report. During the game with a colt, a 6-year-old boy was kicked by hoof in the chin. The child did not lose consciousness and did not experience nausea or vomiting. According to clinical examination and radiological analysis, diagnosis was assigned as dislocated mandibular fracture in the parasymphysis part of the jaw and luxation injury of teeth 31 and 72. The surgical treatment under general anesthesia encompassed reduction and bimanual manipulation of bone fragments up to the optimal restoration of the dental occlusion, along with osteosynthesis with titanium miniplates. Luxated deciduous tooth 72 at the fracture line was extracted and luxated permanent tooth 31 was fixed to tooth 41 with wire. The patient was given antibiotic therapy. Additional immobilization of the luxated tooth 31 and mandibular fracture was performed after surgery by composite resin splint. During five-month follow-up period there were no signs of pathological movements in the fracture line, no luxation of tooth 31 and no restriction in mouth opening. Conclusion. Osteosynthesis with miniplates is adequate and very efficient treatment method in dislocated mandibular fracture that is recommended in children with both deciduous and mixed dentition. It is necessary to remove miniplates after fracture consolidation.

scholarly journals Automatic Detection of Mandibular Fractures in Panoramic Radiographs Using Deep Learning

Diagnostics ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 933
Author(s):  
Dong-Min Son ◽  
Yeong-Ah Yoon ◽  
Hyuk-Ju Kwon ◽  
Chang-Hyeon An ◽  
Sung-Hak Lee
Keyword(s):  
Deep Learning ◽  
Panoramic Radiography ◽  
Imaging Modality ◽  
Panoramic Radiograph ◽  
Learning System ◽  
Mandibular Fractures ◽  
Detection Accuracy ◽  
Panoramic Radiographs ◽  
Single Scale ◽  
Bounding Boxes

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. This paper proposes the diagnosis method of mandibular fractures in a panoramic radiograph based on a deep learning system without the intervention of radiologists. The deep learning system used has a one-stage detection called you only look once (YOLO). To improve detection accuracy, panoramic radiographs as input images are augmented using gamma modulation, multi-bounding boxes, single-scale luminance adaptation transform, and multi-scale luminance adaptation transform methods. Our results showed better detection performance than the conventional method using YOLO-based deep learning. Hence, it will be helpful for radiologists to double-check the diagnosis of mandibular fractures.

Mandibular Fractures—What to Do When

1995 ◽  
Vol 112 (5) ◽  
pp. P178-P178
Author(s):  
William D. Clark ◽  
John M. Morehead
Keyword(s):  
Mandibular Fracture ◽  
Mandibular Fractures ◽  
Educational Objectives ◽  
Mandible Fractures ◽  
Special Circumstances

Educational objectives: To determine the appropriate techniques to treat a variety of mandible fractures and to access the special circumstances of the patient with a mandibular fracture and modify treatment accordingly.

scholarly journals Detection and classification of unilateral cleft alveolus with and without cleft palate on panoramic radiographs using a deep learning system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chiaki Kuwada ◽  
Yoshiko Ariji ◽  
Yoshitaka Kise ◽  
Takuma Funakoshi ◽  
Motoki Fukuda ◽  
...  
Keyword(s):  
Deep Learning ◽  
Cleft Palate ◽  
Panoramic Radiography ◽  
False Positive Rate ◽  
Normal Subjects ◽  
Learning System ◽  
Panoramic Radiographs ◽  
Positive Rate ◽  
Aided Diagnosis

AbstractAlthough panoramic radiography has a role in the examination of patients with cleft alveolus (CA), its appearances is sometimes difficult to interpret. The aims of this study were to develop a computer-aided diagnosis system for diagnosing the CA status on panoramic radiographs using a deep learning object detection technique with and without normal data in the learning process, to verify its performance in comparison to human observers, and to clarify some characteristic appearances probably related to the performance. The panoramic radiographs of 383 CA patients with cleft palate (CA with CP) or without cleft palate (CA only) and 210 patients without CA (normal) were used to create two models on the DetectNet. The models 1 and 2 were developed based on the data without and with normal subjects, respectively, to detect the CAs and classify them into with or without CP. The model 2 reduced the false positive rate (1/30) compared to the model 1 (12/30). The overall accuracy of Model 2 was higher than Model 1 and human observers. The model created in this study appeared to have the potential to detect and classify CAs on panoramic radiographs, and might be useful to assist the human observers.

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