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PURPOSE: This study employed a posteriori registration and subtraction of radiographic images to quantify the apical root resorption in maxillary permanent central incisors after orthodontic treatment, and assessed whether the external apical root resorption (EARR) was related to a range of parameters involved in the treatment. MATERIALS AND METHODS: A sample of 79 patients (mean age, 13.5±2.2 years) with no history of trauma or endodontic treatment of the maxillary permanent central incisors was selected. Periapical radiographs taken before and after orthodontic treatment were digitized and imported to the Regeemy software. Based on an analysis of the posttreatment radiographs, the length of the incisors was measured using Image J software. The mean EARR was described in pixels and relative root resorption (%). The patient's age and gender, tooth extraction, use of elastics, and treatment duration were evaluated to identify possible correlations with EARR. RESULTS: The mean EARR observed was 15.44±12.1 pixels (5.1% resorption). No differences in the mean EARR were observed according to patient characteristics (gender, age) or treatment parameters (use of elastics, treatment duration). The only parameter that influenced the mean EARR of a patient was the need for tooth extraction. CONCLUSION: A posteriori registration and subtraction of periapical radiographs was a suitable method to quantify EARR after orthodontic treatment, and the need for tooth extraction increased the extent of root resorption after orthodontic treatment.
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PURPOSE: This study's purpose was to describe the primary dentin reactions following restoration without complete removal of infected dentin. METHODS: Fragments of carious dentin from 43 teeth with acute deep lesions were removed at baseline and compared to samples of carious dentin removed 60 days later, using scanning electron microscopy (SEM) photographs. At the follow-up periods (60 days; 10-13 months), restorations were evaluated using US Public Health Service criteria and standardized radiographs. A postprocessing routine of radiographs was used to identify changes in radiographic density between periods. RESULTS: At baseline, SEM photographs showed disorganized tissue and bacterial invasion. After 60 days, the dentin exhibited a better organization and signs of remineralization. Differences in restoration characteristics were detected for cavosurface discoloration (P=.008), wear (P<.001), and surface texture (P<.001) after 10 to 13 months. Digital subtraction radiographs showed that mean gray levels of carious and sound dentin increased after 10 to 13 months (P<.001). Differences in mean gray levels were detected between carious and sound dentin only for the 60-day images (P=.03). CONCLUSIONS: Removal of infected dentin wasn't fundamental for caries arrestment. Carious dentin tended to reorganize in a short period when properly sealed, and the remineralization process continued for longer periods. Correct diagnosis of pulp vitality seems fundamental for the success of this protocol.
Subject(s)
Dental Caries/diagnostic imaging , Dental Cavity Preparation/methods , Radiography, Dental, Digital/methods , Tooth Remineralization/methods , Analysis of Variance , Child , Child, Preschool , Dental Caries/pathology , Dental Caries/therapy , Female , Follow-Up Studies , Humans , Male , Microscopy, Electron, Scanning , Tooth, Deciduous/diagnostic imaging , Tooth, Deciduous/pathologyABSTRACT
Maxillary antrolithiasis is characterized by masses of tissue of endogenous or exogenous origin that calcify within the maxillary sinuses. Aspergillosis is a fungal disease in which the maxillary sinus is a primary site of infection. Aspergillosis mycetoma, its noninvasive form, is the most prevalent modality of the disease in the maxillary sinuses. In approximately half of the cases reported in the literature, calcification of the fungal mycelia, which later became antroliths, was verified. This article reports a rare case of the accidental discovery of a maxillary antrolith associated with noninvasive aspergillosis in an immunocompetent and asymptomatic 56-year-old woman. The diagnosis and therapeutic procedures used in treating the patient are discussed as well as the probable iatrogenic origin of the fungal pathology.
Subject(s)
Aspergillosis/diagnostic imaging , Lithiasis/microbiology , Maxillary Sinus/microbiology , Paranasal Sinus Diseases/microbiology , Asymptomatic Diseases , Diagnosis, Differential , Female , Foreign Bodies/diagnostic imaging , Humans , Incidental Findings , Lithiasis/diagnostic imaging , Maxillary Neoplasms/diagnostic imaging , Maxillary Sinus/diagnostic imaging , Middle Aged , Mycetoma/diagnosis , Odontoma/diagnostic imaging , Paranasal Sinus Diseases/diagnostic imaging , Radiography, Panoramic , Tomography, X-Ray Computed , Tooth Root/diagnostic imagingABSTRACT
AIM: To investigate the association between gender and type of cleft with hypodontia and to verify if the presence of the cleft interferes with hypodontia of one or more type of teeth in patients with ectodermal dysplasia attending the Hospital for Rehabilitation of Craniofacial Anomalies (HRCA), University of São Paulo (USP). MATERIALS AND METHODS: Panoramic radiographs of 54 patients of both genders (29 males, 25 females), from the files of the oral radiology sector of HRCA/USP, presenting with ectodermal dysplasia and cleft lip and/or palate were evaluated by radiographic observation of hypodontia of one or more types of teeth. STATISTICAL ANALYSIS: We performed descriptive statistics and statistical analysis by Fisher test. RESULTS: Hypodontia was observed in 50% of females and 50.88% of males; 50% for cleft palate and 50.59% for complete cleft lip and palate. Only 22.22% of patients with cleft palate and 6.67% with complete cleft lip and palate presented with hypodontia of one type of teeth, whereas 77.78% of cases with cleft palate and 93.33% with complete cleft lip and palate displayed hypodontia of more than one type of teeth. CONCLUSION: Based on the present methodology, there were no statistically significant differences in hypodontia of one or more types of teeth between genders or types of cleft.
Subject(s)
Anodontia/diagnostic imaging , Cleft Lip/diagnostic imaging , Cleft Palate/diagnostic imaging , Ectodermal Dysplasia/diagnostic imaging , Adolescent , Adult , Anodontia/classification , Bicuspid/abnormalities , Child , Cleft Lip/complications , Cleft Palate/complications , Cuspid/abnormalities , Ectodermal Dysplasia/complications , Female , Humans , Incisor/abnormalities , Male , Molar/abnormalities , Radiography, Panoramic/methods , Retrospective Studies , Sex Factors , Young AdultABSTRACT
O objetivo deste estudo foi quantificar a reabsorção radicular apical externa em indivíduos submetidos a tratamento ortodôntico e correlacionar a reabsorção radicular com possíveis fatores predisponentes. A amostra incluiu 79 indivíduos, com idade média de 13,7 anos e dividida em 2 grupos, de indivíduos tratados sem e com exodontia dos primeiros pré-molares superiores. Foram selecionadas as radiografias periapicais dos incisivos centrais superiores, obtidas no início e no final do tratamento ortodôntico. As radiografias foram digitalizadas e inseridas no programa Regeemy® Image Registration and Mosaicking v.0.2.43-RCB (DPI-INPE, São José dos Campos, SP, Brazil) e procedidos os registros a posteriori (correção de diferenças de projeção geométrica, densidade e contraste entre as duas radiografias). As mensurações dos incisivos centrais superiores, foram realizadas nas imagens referência (prétratamento) e na versão registrada (pós-tratamento), no programa UTHSCSA Image Tool® (University of Texas Health Science Center at San Antonio), obtidas em pixels e convertidas em porcentagem. Os resultados mostraram que ocorreu reabsorção radicular estatisticamente significante em ambos os grupos, com maior reabsorção no grupo com exodontia (p<0,05). Na comparação das variáveis pré e pós tratamento ortodôntico, entre os dois grupos, verificou-se que a diferença dasmedidas cefalométricas 1.NA e 1-NA foi significantemente maior no grupo com exodontia (p<0,05). A variável idade não diferiu estatisticamente entre os grupos (p>0,05). O período do tratamento foi significantementemaior no grupo com exodontia e as reabsorções radiculares foram também maiores no grupo tratado com exodontias (p<0,05), embora esteresultado tenha sido estatisticamente significante apenas para o dente 11.Somente houve correlação estatisticamente significante entre areabsorção radicular e o fator diferença 1-NA pré-pós do grupo com exodontia (Rho=0,45; p<0,05). Diante dos resultados obtidos, pode-se...
The aim on this study was to quantify the external apical root resorption in individuals submitted to orthodontic treatment and to correlate the root resorption with the possible predisposing factors. The sample comprised 79 individuals (mean age 13,7 years) divided into two groups: individuals treated with and without extractions of the maxillary first premolars. Periapical radiographs of maxillary central incisors obtained in the beginning and in the end of the orthodontic treatment were selected. Theradiographs were digitized and imported to Regeemy® Image Registration and Mosaicking v.0.2.43-RCB (DPI-INPE, São José dos Campos, SP, Brazil) for image registration a posteriori (correction of geometric, density and contrast differences between two images). The maxillary central incisors were measured in the reference (pre-treatment) and registered (post treatment) images using UTHSCSA Image Tool®(University of Texas Health Science Center at San Antonio). The measurements were obtained in pixels and converted to percentage.Statistically significant root resorption was found for both groups, but it was greater for the extraction group (p<0,05). The comparison of the pre and post-treatment differences of the variables between the groups demonstrated statistically significant differences for 1.NA and 1-NA(p<0,05). These differences were greater for the extraction group. Agedidnt differ statistically between the groups (p>0,05). The treatment duration was found to be statistically higher for the extraction group as wellas the root resorptions (p<0,05), although the later was statistically significant only for tooth #11. Statistically significant correlation was found only between root resorption and the difference between 1-NA pre and post-treatment for the extraction group (Rho=0,45; p<0,05). Based on the results, we concluded that orthodontic treatment with extractions cause greater external root resorption, greater treatment duration...
Subject(s)
Humans , Early Diagnosis , Tooth Movement Techniques , Orthodontics , Root ResorptionABSTRACT
Atherosclerosis is a serious chronic disease, responsible for thousands of deaths worldwide and is characterized by thickening and loss of elasticity of the arterial walls, associated with the presence of atheromatous plaques. Various risk factors act directly on predisposition to the disease, among which the following are pointed out: diabetes mellitus, arterial hypertension and inadequate diet and eating habits. More recent researches have elucidated new risk factors acting in the development of this disease, such as, for example: periodontitis, chronic renal disease and menopause. The panoramic radiograph, commonly used in dental practice, makes it possible to see calcified atherosclerotic plaques that are eventually deposited in the carotid arteries. The aim of this review article was to emphasize the dentist's important role in the detection of carotid artery atheromas in panoramic radiographs and the immediate referral of patients affected by these calcifications to doctors. In addition, the study intended to guide the dentist, especially the dental radiologist, with regard to differential diagnosis, which should be made taking into consideration particularly the triticeal cartilage when it is calcified.
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La parotiditis recurrente juvenil (PRJ) es una enfermedad inflamatoria de la glándula parótida, generalmente se caracteriza por episodios recurrentes de hinchazón, dolor y fiebre. Después de la parotiditis epidémica, es la PRJ en los niños, la segunda enfermedad más frecuente de las glándulas salivales. La aparición de PRJ se produce alrededor de 6 años de edad y hay una ligera predilección por los varones. La etiología de la enfermedad sigue siendo poco clara y los síntomas tienden a desaparecer con la pubertad. Este estudio reporta el caso de un joven de 12 años que se presentó a la Facultad de Odontología de la Universidad Estadual Paulista, Sao José dos Campos, con una historia de episodios recurrentes de hinchazón de la glándula parótida izquierda asociada con dolor, fiebre y secreción purulenta en los primeros eventos. Terminada la anamnesia, se decidió por obtener sialografías de las dos glándulas parótidas con el uso de material de contraste Lipiodol UF 38% y radiografías panorámicas, seguidas por las evaluaciones morfológicas y funcionales. El paciente se encuentra hoy sin presentar recurrencia de la enfermedad y está bajo seguimiento clínico
The Juvenile Recurrent Parotitis (JRP) is an inflammatory disease of the parotid gland, usually characterized by recurrent episodes of swelling, pain and fever. After mumps, the PRJ in children is the second most prevalent disease of salivary glands. The emergence of PRJ occurs around 6 years old and there is a slight predilection for males.The etiology of the disease remains unclear and the symptoms tend to disappear with puberty. This study reports the case of a twelve years old boy who presented to the Dentistry School of São Paulo State University - campus São José dos Campos- with a history of recurrent episodes of swelling of the left parotid gland associated with pain, fever and purulent discharge in the early events . Finished the anamnesis, sialography were performed with the use of Lipiodol UF 38% contrast material and panoramic radiographs on both parotid glands, followed by morphological and functional assessments. There was no recurrence of the disease and the patient is under follow-up
