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1.
J Forensic Odontostomatol ; 2(38): 2-11, 2020 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-33174533

RESUMO

Dental age (DA) estimation is an extensively investigated resource used by forensic science. This study aimed to evaluate the applicability of the Measurement of Open Apices for DA estimation in north east Brazilians. A total of 429 orthopantomographs of individuals aged 5 to 14.99 years were used. The sample was distributed according to the age groups 5-6.99, 7-8.99, 9-10.99, 11-12.99 and 13-14.99 years, and the data were analyzed descriptively and by linear regression (α= 5%). The majority of the radiographs were from females (n = 241; 56.2%), with an overall mean age of 12 years (± 2.12). A significant difference was observed between DA and chronological age (CA) in the total sample and specifically in females and males. The method underestimated CA by 0.31 year (total sample) and by 0.3 and 0.32 year in females and males, respectively. In contrast, the method overestimated CA in the groups 5-6.99 and 7-8.99 years, with a mean difference (MD) of 0.48 year (p = 0.007) and 0.17 year (p = 0.182), respectively. In the other groups, DA was predicted to be below CA, with a significant difference in the group 13-14.99 (0.75 year). Based on the regression analysis, a correction factor was proposed from the original formula for this population, thereby reaching a predictive power of approximately 80%. To conclude, this method is applicable to the study population aged 5 to 13 years as the estimates obtained did not exceed the error limit of ±1 year.


Assuntos
Determinação da Idade pelos Dentes , Adolescente , Brasil , Criança , Pré-Escolar , Feminino , Humanos , Modelos Lineares , Masculino , Radiografia Panorâmica , Análise de Regressão
2.
J Forensic Odontostomatol ; 2(38): 22-39, 2020 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-33174535

RESUMO

The goal of long term research on age assessment is to focus on the strengths and weaknesses of existing reliable methods of age estimation. In cases of age estimation when all teeth are present, maximum accuracy can be obtained using a 7 tooth model. Demirjian's system and Willems models require all seven mandibular teeth in the lower left quadrant for age assessment. Unfortunately, these methods cannot be applied in children with hypodontia. In 2019, Bedek et al., from Croatia, developed new models of age estimation based on a combination of one to seven mandibular teeth. In the present study, we tested the accuracy of the newly developed models for age estimation in South Indian children. Tested in parallel with Willems models, the accuracy of the new models was tested in terms of mean difference, mean absolute error (MAE) and percentage of correct estimations within intervals of +0.5 and +1 years. In terms of mean difference between chronological age (CA) and estimated dental age (DA), all models along with Willems models have underestimated the CA except Bedek et al's 6 tooth model where overestimation of CA was seen in boys. For MAE and percentage of correct estimations, the new models performed better than Willems models. With regards to our results, it can be concluded that the new models for dental age calculation are accurate and suitable. Therefore, we may encourage their use for age estimation in South Indian children, particularly in individuals with hypodontia or when multiple teeth are missing.


Assuntos
Determinação da Idade pelos Dentes , Dente , Adolescente , Criança , Croácia , Humanos , Masculino , Radiografia Panorâmica , Calcificação de Dente
3.
Annu Int Conf IEEE Eng Med Biol Soc ; 2020: 2194-2197, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-33018442

RESUMO

Dental panoramic radiography (DPR) images have recently attracted increasing attention in osteoporosis analysis because of their inner correlation. Many approaches leverage machine learning techniques (e.g., deep convolutional neural networks (CNNs)) to study DPR images of a patient to provide initial analysis of osteoporosis, which demonstrates promising results and significantly reduces financial cost. However, these methods heavily rely on the trabecula landmarks of DPR images that requires a large amount of manual annotations by dentist, and thus are limited in practical application. Addressing this issue, we propose to automatically detect trabecular landmarks in DPR images. In specific, we first apply CNNs-based detector for trabecular landmark detection and analyze its limitations. Using CNNs-based detection as a baseline, we then introduce a statistic shape model (SSM) for trabecular landmark detection by taking advantage of spatial distribution prior of trabecular landmarks in DPR images and their structural relations. In experiment on 108 images, our solution outperforms CNNs-based detector. Moreover, compared to CNN-based detectors, our method avoids the needs of vast training samples, which is more practical in application.


Assuntos
Osteoporose , Humanos , Aprendizado de Máquina , Redes Neurais de Computação , Osteoporose/diagnóstico por imagem , Radiografia , Radiografia Panorâmica
4.
J Contemp Dent Pract ; 21(7): 748-755, 2020 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-33020357

RESUMO

AIM: The association between oral health and overall health has been broadly documented in the past few years and is supported by a rapidly growing body of evidence. Interventional studies were able to establish a linkage between dental intervention and its influence on medical situations. This study tried to determine whether the overall health of a subject may be correlated to radiographically noticeable dental pathology. There was a need to test a null theory of whether subjects having good oral health state had fewer systemic illnesses. MATERIALS AND METHODS: This was a retrospective panoramic radiographic study of 400 radiographs of 200 women and 200 men. Subjects were divided into a control group of subjects with no medical history, and a second group with patients who had presented with a medical history. A panoramic radiograph was observed for periapical radiolucency, caries, remaining teeth, remaining root, horizontal, and vertical bone loss. The oral index (OI) was calculated and correlated with the medical status of the patient. RESULTS: Men demonstrated a higher incidence of horizontal bone loss and missing teeth. On the contrary, women showed higher incidences of vertical bone loss, compromised periapical index, and a greater number of root canal treated teeth. Patients having a medical history had a significant percentage of the increased number of periapical lesions, tooth loss, poor quality root canal treatment, and periapical index. Patients with both diabetes mellitus (DM) and hypertension [HTN (61.3%)], anemia (75%), prostate disease (100%), and disabilities such as hearing impairment and mental retardation (100%) had significantly higher percentages of the bad OI. CONCLUSION: Most patients with medical history demonstrated a significantly poor OI than those with no medical history. The present research contributes to scientific works by probing the relationship between oral health and the overall well-being. Increasing the sample size and interventional studies are needed as an extension of the current research. CLINICAL SIGNIFICANCE: Panoramic radiograph is commonly practiced as a screening radiograph in a dental setup. By calculating an OI of each patient based on certain dental conditions, it can help in revealing the burden of medical diseases on oral health and vice versa.


Assuntos
Cárie Dentária , Doenças da Boca , Feminino , Humanos , Masculino , Radiografia Panorâmica , Estudos Retrospectivos , Tratamento do Canal Radicular
5.
Medicine (Baltimore) ; 99(33): e21756, 2020 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-32872069

RESUMO

RATIONALE: Medication-related osteonecrosis of the jaw decreases quality of life of patients with cancer. The debate about it continues regarding the risk factors, etiology, and treatment methods, and so on. Also, spontaneous regeneration of the mandible is clinically rare. PATIENT CONCERNS: A 67-year-old woman presented to the authors' department complaining of pain, swelling, and pus discharge from a fistula. She previously had breast cancer bone metastases and had received antiresorptive intravenous bisphosphonate. DIAGNOSIS: The patient was diagnosed with medication-related osteonecrosis of the jaw. INTERVENTIONS: She received conservative therapy with antibiotics and surgical therapy as sequestrectomy under general anesthesia; however, the lesion did not heal. Thirty months after the MRONJ diagnosis, when she was 70 years' old, she underwent a left hemimandibulectomy without reconstruction under general anesthesia. OUTCOMES: Spontaneous regeneration of the mandible was observed by follow-up imaging examinations. The patient has no current subjective or objective symptoms. LESSONS: This is the first case report of the spontaneous mandibular regeneration after surgery for medication-related osteonecrosis of the jaw. Additionally, this case was the oldest patient among the published mandibular regeneration cases.


Assuntos
Osteonecrose da Arcada Osseodentária Associada a Difosfonatos/cirurgia , Regeneração Óssea , Mandíbula , Osteotomia Mandibular , Idoso , Feminino , Humanos , Radiografia Panorâmica
6.
Dental Press J Orthod ; 25(4): 68-74, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32965389

RESUMO

OBJECTIVE: To evaluate the skill of orthodontists and oral/maxillofacial surgeons (OMFS) in providing a prognosis of mandibular third molars spontaneously erupted, through follow-up panoramic analysis. METHODS: 22 orthodontic patients treated without extraction, presenting spontaneously erupted mandibular third molars (n = 44) were analyzed through panoramic serial radiographs. The first panoramic radiograph was obtained just after orthodontic treatment (PR1), in patients aging from 13 to 19 years. A second panoramic radiograph (PR2), was obtained in average two years later. The radiographs were randomly analyzed by 54 specialists, 27 orthodontists and 27 OMFS, to obtain the opinion about the approach to be adopted to these teeth in PR1. Then, another opinion was collected by adding a serial radiograph (PR1+2). RESULTS: The concordance of the answers was moderate for OMFS (Kappa 0.44; p< 0.0001) and significant for orthodontists (Kappa 0.39; p< 0.0001). In the analysis of the first radiograph (PR1) of the spontaneously erupted molars, OMFS indicated extraction in 44.5% of cases, while orthodontists indicated in 42%, with no difference between groups (p= 0.22). In PR1+2 analysis, orthodontists maintained the same level of extraction indication (45.6%, p= 0.08), while surgeons indicated more extractions (63.2%, p< 0.0001). CONCLUSIONS: Orthodontists and OMFS were not able to predict the eruption of the third molars that have erupted spontaneously. Both indicated extractions around half of the third molars. A follow-up analysis, including one more radiograph, did not improve the accuracy of prognosis among orthodontists and worsened for OMFS.


Assuntos
Dente Serotino/diagnóstico por imagem , Dente Serotino/cirurgia , Dente Impactado/diagnóstico por imagem , Humanos , Mandíbula/diagnóstico por imagem , Dente Molar , Cirurgiões Bucomaxilofaciais , Ortodontistas , Radiografia Panorâmica , Erupção Dentária , Extração Dentária
7.
Int J Oral Maxillofac Implants ; 35(5): 990-994, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32991650

RESUMO

PURPOSE: The SAC Assessment Tool is a clinical decision support system based on the foundations of the SAC Classification System in Implant Dentistry developed by the International Team for Implantology in 2009. It objectively classifies a patient's rehabilitation with dental implants as straightforward, advanced, or complex, from both a surgical and restorative perspective. The aim of this research was to test the agreement between observers with different qualification levels and clinical experience when using this clinical decision support system as a method that mitigates risk. MATERIALS AND METHODS: A total of 30 patients were randomly selected from clinical records, and diagnostic casts, intraoral and extraoral images, and panoramic radiographs were obtained. All data were analyzed with and without the SAC Assessment Tool by a dentist with advanced training and clinical experience in implant dentistry (control dentist) and compared with three colleagues (dentists 1, 2, and 3) with fewer qualifications and less clinical experience. All data were analyzed using statistical agreement tests (Fless kappa), interclass correlation, and agreement rate. The level of significance (α) was set at .05. RESULTS: All patients included in this research presented 104 edentulous areas, which were subjected to surgical evaluation for possible placement of dental implants. Concerning the degree of risk evaluation for dental implant treatment, the results of this study found that the agreement rate of the control dentist without SAC and control dentist with SAC was excellent (81.7%); the agreement rate of the control dentist and dentists 1, 2, and 3 with the use of SAC was satisfactory (67.3% to 76.0%); the variable that presented a lower agreement rate (34.6%) was the comparison between dentists 1, 2, and 3 without use of the SAC Assessment Tool. CONCLUSION: The SAC classification seems to be a useful tool to assist dentists with less experience in implant dentistry with defining the complexity of the treatment and hence with patient selection. It helps in the collection and homogenization of important clinical data to assess the risk of implant-based rehabilitations, thus contributing to an increase in the agreement rate.


Assuntos
Implantes Dentários , Boca Edêntula , Implantação Dentária Endo-Óssea , Humanos , Radiografia Panorâmica
8.
Oral Health Prev Dent ; 18(1): 773-782, 2020 Sep 04.
Artigo em Inglês | MEDLINE | ID: mdl-32895661

RESUMO

PURPOSE: To assess the mandibular cortical width (MCW) and morphology of the mandibular inferior cortex (MIC) on panoramic views from a large sample of males and females in various age groups by using an automated morphometric grading system for assisting osteoporosis screening. Furthermore, possible predictors and concrete cut-off values to identify the risk for osteoporosis were evaluated. MATERIALS AND METHODS: MCW, MIC, tooth loss (TL), and alveolar bone loss (ABL) were retrospectively evaluated in 700 panoramic images from dental patients in Hong Kong using commercially available software. To estimate possible predictors for identifying the risk of osteoporosis, age, TL, and ABL were evaluated with the receiver operating characteristic (ROC) curves for each gender separately. RESULTS: The age groups 60s (sixties), 70s and 80s showed statistically significant gender differences. For example, a smaller MCW and more MIC Class 3 were found in females. Furthermore, females exhibited a statistically significant increase in TL in the age groups 50 years and above. In males, age, TL or ABL did not correlate with MCW, whereas in females it statistically significantly did. Meanwhile, the correlation between ABL and MCW and MIC was weak for both genders. Concrete cut-off values to identify patients at risk of osteoporosis were 60.15 years and 3.5 missing teeth in females, and 72.55 years in males. CONCLUSION: Age and tooth loss were related to MCW and MIC in the population investigated. An age of ≥60 as well as more than 3.5 teeth lost seem to be indicators for a risk of osteoporosis in Chinese females based on panoramic views using artificial-intelligence-based software.


Assuntos
Osteoporose Pós-Menopausa , Osteoporose , Perda de Dente , Absorciometria de Fóton , Densidade Óssea , Feminino , Hong Kong , Humanos , Masculino , Mandíbula , Radiografia Panorâmica , Estudos Retrospectivos
9.
Niger J Clin Pract ; 23(9): 1328-1331, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32913176

RESUMO

It is possible to rehabilitate fully edentulous patients with implantsupported fixed or removable prostheses; however, implantsupported fixed prostheses are the gold standard for patients who not prefer to use removable dentures. This case report, prosthetic rehabilitation of a completely edentulous young patient with an implantsupported fixed hybrid prosthesis using the "Malo Bridge" technique is described. A 18 years old male patient was referred to the clinic with complaints of tooth loss, aesthetics, function, and phonetic. A total of 5 implants were placed in both the jaws. Considering that screw holes may cause aesthetic problems due to the Class III occlusion, these problems have been solved with the implant-supported hybrid prosthesis called Malo bridge. With the Malo Bridge design, the patient's aesthetic, functional and phonetic loss was eliminated, patient comfort and quality of life were improved, and patient expectations were met. It is a viable treatment option to rehabilitate completely edentulous jaws with a cross relationship and increase interarch distance using Malo Bridge to support a fixed prosthesis.


Assuntos
Implantes Dentários , Prótese Dentária Fixada por Implante , Arcada Edêntula/reabilitação , Maxila/cirurgia , Qualidade de Vida , Perda de Dente/psicologia , Adolescente , Planejamento de Prótese Dentária , Retenção de Dentadura/instrumentação , Humanos , Arcada Edêntula/cirurgia , Masculino , Fonética , Radiografia Panorâmica , Resultado do Tratamento
10.
BMC Med Genet ; 21(1): 161, 2020 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-32807118

RESUMO

BACKGROUND: Pathogenic AXIN2 variants cause absence of permanent teeth (hypodontia), sparse hair and eye brows (ectodermal dysplasia), and gastrointestinal polyps and cancer. Inheritance is autosomal dominant with variable penetrance. Only twenty- five patients have been reported from five families. A Mayo Clinic pilot program tested 3009 newly diagnosed cancer patients for pathogenic germline variants in 83 hereditary cancer genes, including AXIN2. We found only one patient with a pathogenic AXIN2 variant. CASE PRESENTATION: The proband was a 49 year-old female who came to Otolaryngology clinic complaining of right-sided nasal obstruction. Biopsy of identified nasal polyp revealed olfactory neuroblastoma (esthesioneuroblastoma). Surgical resection with gross, total tumor resection was followed by radiation therapy. The patient enrolled in a clinical pilot of genetic testing and a pathogenic variant in AXIN2, c.1822del (p.Leu608Phefs*81) (NM_004655.3) was found. She was seen in Medical Genetics clinic and found to have a personal history of hypodontia. Her eyebrows, hair, and nails were all normal. She underwent upper endoscopy and colonoscopy. A four mm gastric adenoma was found and removed. CONCLUSIONS: This is the first case reported on a patient with a pathogenic, germline AXIN2 variant and an olfactory neuroblastoma or a gastric adenoma. We propose that these could be features of the AXIN2 phenotype. The known association between gastric adenomas and familial adenomatous polyposis, the other Wnt/beta-catenin disorder, supports the hypothesis that pathogenic AXIN2 variants increase risk as well. As the odds of a chance co-occurrence of a pathogenic AXIN2 variant and an olfactory neuroblastoma are so rare, it is worth exploring potential causation. We are building a clinical registry to expand understanding of the AXIN2 phenotype and request any clinicians caring for patients with pathogenic AXIN2 variants to contact us.


Assuntos
Adenoma/genética , Proteína Axina/genética , Estesioneuroblastoma Olfatório/genética , Células Germinativas/metabolismo , Neoplasias Gástricas/genética , Estesioneuroblastoma Olfatório/diagnóstico por imagem , Estesioneuroblastoma Olfatório/patologia , Feminino , Humanos , Imagem por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Linhagem , Fenótipo , Radiografia Panorâmica , Neoplasias Gástricas/diagnóstico por imagem
11.
Indian J Dent Res ; 31(3): 408-413, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32769275

RESUMO

Aim: The aim of this study was to find a correlation between the permanent maxillary canine eruption and the cervical vertebral maturation index (CVMI). Materials and Methods: 145 subjects (73 male and 72 female) in the age of 7-14 years were examined radiographically with lateral cephalographs and orthopantomographs. The CVM patterns were evaluated on the lateral cephalograph using the classification of Hassel and Farman. The stage of the permanent maxillary canine eruption has been investigated on the orthopantomographs depending on its vertical height in relation to the adjacent incisor. Descriptive statistics were obtained for both CVMI stages and canine eruption grading. Spearman rank correlation test was used to determine the correlation between both methods. The minimum level of significance was considered less than 0.05 (P < 0.05). Results: Results showed a strong correlation between CVMI and the grading of the maxillary canine eruption in both female and male and the (r) value estimated was 0.862 and 0.758, respectively. Over 90% of deceleration stage of CVMI in both genders show canine eruption (pubertal growth spurt) about 91.66% for female and 95.65% for male and a small percentage of delay eruption 8.33% and 4.35% in female and male gender, respectively, with a predilection to the female gender. Conclusions: A significant correlation between the permanent maxillary canine eruption stages and skeletal maturity was found. The eruption of maxillary canine occurs before the end of pubertal growth. Any delay in the eruption of maxillary canine after the deceleration stage of CVMI, suggesting a chance of impaction.


Assuntos
Determinação da Idade pelo Esqueleto , Erupção Dentária , Cefalometria , Dente Canino/diagnóstico por imagem , Feminino , Masculino , Maxila , Radiografia Panorâmica
12.
Indian J Dent Res ; 31(3): 444-448, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32769281

RESUMO

Background: Mandible is a dimorphic, dense compact bone that makes it very durable and well preserved in mass disasters for personnel identification. Mandibular ramus morphometric measurements can be used for gender determination using orthopantomogram (OPG) or on dry mandibles. Aim: To determine gender from morphometric analysis of mandibular ramus of 200 digital OPG of patients from Sriganganagar population. Materials and Methods: The study was conducted on randomly selected digital OPG of 200 patients of both genders between the ages of 21 and 70 years taken using CS8000C machine from daily OPD. Morphometric analysis of mandibular ramus (maximum ramus breadth, minimum ramus breadth, condylar height, projective height of ramus, and coronoid height) was done twice by single maxillofacial radiologist independently at an interval of 1 day and mean of both the values were considered. The collected data was tabulated and analyzed using SPSS Software version 20 using independent t-test and discriminant function analysis. Results: Out of total 200 subjects, 37% were male and 63% were female. Mean of minimum ramus breadth, maximum ramus height, and projected ramus height was noted significantly more among males while maximum ramus breadth was noted slightly higher in females. The overall accuracy for determining sex from mandibular ramus was found to be 77.6%, whereas for determining male and female, the accuracy was 78.4% and 76.8%, respectively. Conclusion: Mandibular ramus can be used for sexual dimorphism by morphometric analysis done on OPG among Sriganganagar population.


Assuntos
Mandíbula , Caracteres Sexuais , Adulto , Idoso , Coleta de Dados , Análise Discriminante , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia Panorâmica , Adulto Jovem
13.
Indian J Dent Res ; 31(3): 457-464, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32769283

RESUMO

Aim: Mandibular cortical index has proven to be inversely correlated to bone densitometry; however, trabecular bone pattern has not been widely studied. Thus, the main objectives of this study were: (1) to analyze the correlations between three different sites of peripheral dual-energy X-ray absorptiometry with the mandibular cortical index and the trabecular bone pattern classification; (2) to assess the correlation between the mandibular cortical index and the trabecular bone pattern; (3) to evaluate the diagnostic accuracy of the mandibular cortical index and the trabecular bone pattern using panoramic radiographs in a sample of Brazilian men. Additionally, peripheral dual-energy X-ray absorptiometry findings in men were described. Materials and Methods: There are about 44 men who had previously undergone panoramic radiography and bone densitometry were evaluated. Mandibular cortical index and trabecular bone pattern classifications were performed. The median T-scores of the men were analyzed. Spearman's test was performed to assess correlations. Results: An inverse correlation was found between mandibular cortical index and proximal bone densitometry site. No correlation was found between mandibular cortical index and trabecular bone pattern or between peripheral densitometry and trabecular bone pattern. Greater accuracy was observed in mandibular cortical index when compared to trabecular bone pattern. Mandibular cortical index evaluations by panoramic radiographs are a useful screening tool for low bone mineral density, but trabecular bone pattern cannot be applied to screen patients for osteoporosis risk. Mandibular cortical index has an inverse correlation with proximal sites of forearm densitometry.


Assuntos
Densidade Óssea , Mandíbula , Absorciometria de Fóton , Brasil , Humanos , Masculino , Radiografia Panorâmica
14.
Oral Maxillofac Surg ; 24(4): 515-520, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32621034

RESUMO

INTRODUCTION: Elongated mandibular coronoid process is a rare condition defined as enlargement of the coronoid process. The only useful way to treat the mouth-opening limitation is resection of the elongated coronoid process. Four-dimensional CT (4DCT; three spatial dimensions plus time axis) is a novel imaging technique. Its usefulness of for evaluation of dynamic movements such as joint motion has been reported. Here, we show the potential usefulness of 4DCT evaluation in a patient with elongated mandibular coronoid process. CASE PRESENTATION: A 59-year-old female who suffered from mouth-opening difficulty and pressure during mouth opening was referred to our department. Elongation of the right coronoid process was evident in a panoramic X-ray image. The mandibular movement and temporal muscle motility before and after coronoidectomy in this patient on 4DCT could be evaluated. CONCLUSIONS: 4DCT is useful in the diagnosis and surgical outcome of elongated coronoid process.


Assuntos
Tomografia Computadorizada Quadridimensional , Osteotomia Mandibular , Feminino , Humanos , Hiperplasia/patologia , Mandíbula/diagnóstico por imagem , Mandíbula/patologia , Mandíbula/cirurgia , Pessoa de Meia-Idade , Radiografia Panorâmica
15.
Br Dent J ; 229(2): 105-109, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32710056

RESUMO

Due to the coronavirus pandemic, all routine dental care in the UK ceased on 25 March 2020. Liverpool University Dental Hospital (LUDH) responded by commencing an emergency dental service on the same date. Clinicians were redeployed within the Hospital to meet the needs of the service, including staffing of the radiology department. LUDH followed Royal College recommendations by taking extraoral radiographs in preference to intraoral radiographs due to the risk of inducing an aerosol. Issues were identified with clinical diagnosis from sectional panoramic radiographs, which led to the introduction of extraoral bitewings being taken as an alternative. A quality assurance audit found that these images provided a substantially lower radiation dose and produced excellent quality images with improved diagnostic accuracy. This article aims to summarise how our radiography practices changed in response to the coronavirus and how the lessons that we have learnt provide an opportunity to modify and improve future practice, beyond the pandemic.


Assuntos
Infecções por Coronavirus , Pandemias , Pneumonia Viral , Betacoronavirus , Humanos , Radiografia Dentária , Radiografia Panorâmica
16.
Orv Hetil ; 161(28): 1166-1174, 2020 07.
Artigo em Húngaro | MEDLINE | ID: mdl-32609624

RESUMO

INTRODUCTION AND AIM: The aim of our study was to investigate the influence of the occlusal support, and mandibular third molars on mandibular angle and condylar fractures. METHOD AND RESULTS: Patients with unilateral and isolated angle or condylar fractures were included in this retrospective, cross-sectional study. Data was collected from patient records and panoramic x-rays. The predictor variables included the type of occlusal support and the presence or absence of third molars. The outcome variable was angle or condylar fracture, while other predictor variables included demographic factors. Bivariate (χ2 test) and logistic regression analyses were conducted to investigate the associations between variables and the outcome. 43 angle (mean age: 29.9 ± 12.8 years; 98.4% male) and 37 condylar (mean age: 46.8 ± 20.2 years; 62.2% male) fracture cases were included in this study. Bilateral occlusal support was present in 81.4% of angle fracture group and in 51.3% of condylar fracture group (p<0.001). In the case of bilateral occlusal support, an odds ratio (OR) of 4.2 was found for angle fractures (p<0.006). A third molar was present in 86% of the angle fracture group and in 43.2% of the condylar fracture group (p<0.001). The presence of a third molar exhibited an odds ratio of 8.1 for the angle fractures (p<0.001). When bilateral occlusal support and third molar were present simultaneously, the risk was 15.9 times higher for an angle fracture (p<0.001). CONCLUSION: The presence of occlusal support and/or third molars was significantly associated with angle fractures, however, the absence of occlusal support and/or third molars significantly correlated with condylar fractures. Orv Hetil. 2020; 161(28): 1166-1174.


Assuntos
Oclusão Dentária , Mandíbula , Côndilo Mandibular/lesões , Fraturas Mandibulares/etiologia , Dente Serotino/anatomia & histologia , Dente Impactado/complicações , Adolescente , Adulto , Idoso , Estudos Transversais , Feminino , Humanos , Incidência , Masculino , Fraturas Mandibulares/epidemiologia , Pessoa de Meia-Idade , Dente Serotino/diagnóstico por imagem , Radiografia Panorâmica , Estudos Retrospectivos , Fatores de Risco , Coroa do Dente/diagnóstico por imagem , Adulto Jovem
17.
Shanghai Kou Qiang Yi Xue ; 29(2): 183-186, 2020 Apr.
Artigo em Chinês | MEDLINE | ID: mdl-32626883

RESUMO

PURPOSE: To determine the age medians for crown and root length completion stages of permanent teeth (except for the third molars) and to study gender differences in crown and root length completion stages by radiographic examinations. METHODS: The development of permanent teeth (except for the third molars) was evaluated from 3304 panoramic radiographs of children aged between 3 and 18 years by Haavikko's method. Statistical analysis was performed using SPSS 25.0 software package. Age medians for crown and root length completion stages of permanent teeth were calculated. Gender differences were analyzed by Mann-Whitney U test. RESULTS: There were no significant gender differences in crown completion stages of central incisor and first molar, of which P values were 0.143 (for maxillary central incisor), 0.122 (for maxillary first molar), 0.191 (for mandibular central incisor) and 0.558 (for mandibular first molar), while girls were found to be ahead of boys for crown completion stages of other teeth. In maxilla, girls were found to be ahead of boys for root length completion stages except for lateral incisor, second premolar and second molar, of which P values were 0.057, 0.130 and 0.294; in mandible, except for second premolar and second molar, girls were observed to be ahead of boys for root length completion stages, of which P values were 0.428 and 0.057. CONCLUSIONS: It is concluded that girls are advanced than boys for crown and root length completion stages in most teeth. There is a similarity in gender differences for crown and root length completion stages between maxilla and mandible.


Assuntos
Dentição Permanente , Coroa do Dente , Adolescente , Criança , Pré-Escolar , Coroas , Feminino , Humanos , Masculino , Maxila , Dente Molar , Radiografia Panorâmica
19.
J Cancer Res Ther ; 16(3): 641-646, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32719282

RESUMO

Schwannoma, a benign nerve sheath tumor, is quite rare and more so in jawbones. We report a rare case of a plexiform variant of mandibular schwannoma in a 12-year-old female with a swelling in the left mandible. Clinical features were suggestive of dentigerous cyst as a result of missing premolars and canine. Occlusal and panoramic radiography revealed an osteolytic lesion with scalloping margins, bicortical plate expansion, and agenesis of several teeth. Odontogenic keratocyst, central giant cell granuloma, odontogenic myxoma, and ameloblastic fibroma were given as radiological differential diagnoses. Histopathological examination revealed features of plexiform schwannoma which was given as the final diagnosis. The lesion was treated with surgical excision. Although odontogenic cysts/tumors are often thought of in differential diagnosis whenever well-defined radiolucencies in the jaw are encountered, it is prudent to include schwannoma. This exceptional case adds light to the fact that schwannoma should not be overlooked though it is a rare possibility and must be included in differential diagnosis of odontogenic cysts/tumors.


Assuntos
Neoplasias Mandibulares/diagnóstico , Neoplasias/diagnóstico , Neurilemoma/diagnóstico , Radiografia Panorâmica/métodos , Criança , Diagnóstico Diferencial , Feminino , Granuloma de Células Gigantes/diagnóstico , Granuloma de Células Gigantes/diagnóstico por imagem , Granuloma de Células Gigantes/cirurgia , Humanos , Neoplasias Mandibulares/diagnóstico por imagem , Neoplasias Mandibulares/cirurgia , Neoplasias/diagnóstico por imagem , Neoplasias/cirurgia , Neurilemoma/diagnóstico por imagem , Neurilemoma/cirurgia , Cistos Odontogênicos/diagnóstico , Cistos Odontogênicos/diagnóstico por imagem , Cistos Odontogênicos/cirurgia , Tumores Odontogênicos/diagnóstico , Tumores Odontogênicos/diagnóstico por imagem , Tumores Odontogênicos/cirurgia
20.
Orthod Craniofac Res ; 23(4): 479-485, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32515152

RESUMO

OBJECTIVE(S): The aim of this study was to evaluate the long-term effectiveness of costochondral graft in hemifacial microsomia (HFM) type III patients. SETTINGS AND SAMPLE POPULATION: A sample of 10 patients affected by HFM type III treated during growth in the same Centre with costochondral graft (CCG patients group) is compared with a control group (CG) sample of 10 non-treated patients affected by the same malformation in order to understand whether surgery during growth provides advantages in terms of bony and facial symmetry after an 8-year follow-up. MATERIALS AND METHODS: The growth of the CCG was assessed on panoramic X-rays. To assess facial symmetry, a photometric evaluation on the frontal view was carried out. RESULTS: In CCG patients group the graft grown in mean less than the healthy ramus, a good facial symmetry was achieved after surgery, but was lost in the majority of the cases at the most recent control. In CG, occlusal canting slightly increased and facial asymmetry was relatively stable during the years. CONCLUSION: In patients with a congenital deformity, restoring the height of the ramus leads to an immediate restitution of facial symmetry, but in the long term, there is a return to the asymmetrical pattern. In CG, the asymmetry is stable during years with no increase of the facial deformity.


Assuntos
Síndrome de Goldenhar , Assimetria Facial/diagnóstico por imagem , Assimetria Facial/cirurgia , Seguimentos , Síndrome de Goldenhar/diagnóstico por imagem , Síndrome de Goldenhar/cirurgia , Humanos , Mandíbula , Radiografia Panorâmica , Resultado do Tratamento
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