Introduction: This study quantitatively evaluated the type and amount of image artifacts generate... more Introduction: This study quantitatively evaluated the type and amount of image artifacts generated by different intracanal materials in birooted teeth scanned at different exposure parameters. Methods: The sample consisted of 15 birooted premolars. Seven different intracanal material combinations were used in each tooth one at a time: (1) roots without intracanal materials, (2) roots with gutta-percha, (3) a buccal root with gutta-percha and a lingual root with a fiberglass post, (4) a buccal root with gutta-percha and a lingual root with a metal core fiberglass post, (5) buccal and lingual roots with fiberglass posts, (6) buccal and lingual roots with metal core fiberglass posts, and (7) buccal and lingual roots with NiCr metal posts. Cone-beam computed tomographic scans were acquired using a CS 9000 unit (Carestream Dental, Atlanta, GA). An image of each tooth was captured under 5 exposure parameters: 2.5, 4, 6.3, 8, and 12 mA. The voxel size, field of view, and tube voltage were fixed at 0.076 mm, 5 Â 3.75 cm, and 75 kV. We assessed each artifact quantitatively using ImageJ's threshold tool (National Institutes of Health, Bethesda, MD) to determine the hypodense and hyperdense artifact areas within 8-bit images extracted from the scans. All analyses were conducted with a 95% confidence level (a <0.05). Results: The inferential analysis showed that roots filled with metal posts presented the highest amount of hypodense and hyperdense artifacts, whereas fiberglass post in both roots presented fewer artifacts. All materials presented more hypodense than hyperdense artifact formation. Overall, the low-exposure settings presented fewer artifacts and higher values of preserved dental images. Conclusions: Low-exposure protocols and fiberglass posts presented fewer image artifacts in CBCT scans.
The aim of this study was to characterize the profile of elderly Brazilians with injuries resulti... more The aim of this study was to characterize the profile of elderly Brazilians with injuries resulting from physical violence and identify victimization differences. A descriptive and exploratory study was conducted involving the analysis of medico-legal and social records of 259 elderly victims of physical violence treated at an Institute of Forensic Medicine and Dentistry over four years (from January 2008 to December 2011). The forensic service database was evaluated by researchers properly trained and calibrated to perform this function between January and March 2013. Socio-demographic variables of victims, aggression characteristics, aggressor's profile and types of lesions were evaluated. Descriptive and multivariate statistics using Multiple Correspondence Analysis (MCA) were performed. The prevalence of facial trauma was 42.9%. Based on the MCA results, two groups with different victimization profiles were identified: married men aged 70-79 years, victims of community violence at night, suffering facial injuries; and single, widowed or separated women aged 60-69 years, victims of domestic violence during the day, suffering trauma in other areas of the body. The results suggest that there is a high prevalence of facial injuries among elderly Brazilians victims of physical violence and there are important differences related to victimization characteristics according to gender. 2016 Elsevier Ireland Ltd. All rights reserved.
This research aimed to compare the efficacy of digital panoramic radiography (DPR) with that of c... more This research aimed to compare the efficacy of digital panoramic radiography (DPR) with that of cone beam computed tomography (CBCT) for delineation of odontogenic and nonodontogenic tumors. From November 2009 through March 2011, 23 tumors in the maxillomandibular complex were diagnosed by histopathological examination. All DPRs and CBCTs were obtained and analyzed by a single previously calibrated radiologist, who considered the following radiographic aspects: clarity of the lesion edges, relation with dental elements, involvement of adjacent anatomical structures, cortical bone expansion and disruption, and, if present, type of involved anatomical structures and site of bone expansion and disruption. Of 23 patients, 15 (65.2%) were male and 8 (34.8%) were female. The tumor was classified as odontogenic in 73.9% of patients and nonodontogenic in 26.1% of patients. Analysis revealed that 56.5% of the tumors were located in the mandible, 34.8% in the maxilla, and 8.7% in both arches....
Quintessence international (Berlin, Germany : 1985), 2012
Mucopolysaccharidosis (MPS) is a group of rare metabolic diseases characterized by intralysosomal... more Mucopolysaccharidosis (MPS) is a group of rare metabolic diseases characterized by intralysosomal accumulation of glycosaminoglycans. MPS type VI or Maroteaux-Lamy syndrome is an autosomal-recessive syndrome caused by mutations in the lysosomal enzyme arylsulfatase B. A defect in the gene leads to accumulation of nondegraded mucopolysaccharides, resulting in severe cellular dysfunction with multisystem expression. The oral manifestations of MPS VI are not well described in the literature. This paper presents a series of seven patients with MPS VI, with the description of the general clinical manifestations and focus on the still rarely studied oral manifestations of the syndrome. Among them were high palate, open bite, impacted and/or included teeth, thickening of the pericoronal follicle, and changes in the temporomandibular joint.
(UEPB) 2. Professor Doutor do Programa de Pós-Graduação em Odontologia da UEPB RESUMO O acidente ... more (UEPB) 2. Professor Doutor do Programa de Pós-Graduação em Odontologia da UEPB RESUMO O acidente vascular cerebral (AVC) tem-se destacado como uma síndrome frequente nas sociedades ocidentais, onde 50% das mortes entre idosos estão associadas a esta condição. A presença de ateromas carotídeos contribui para seus altos índices de prevalência, e o seu diagnóstico precoce pode contribuir signifi cativamente para a redução dos AVCs. A rotina odontológica atual necessita, cada vez mais, de exames de imagem, tais como radiografi as panorâmicas e exames tomográfi cos de face, que podem mostrar, mesmo não intencionalmente, a presença de ateromas carotídeos. Assim, foi realizada uma revisão não sistemática de artigos nas línguas portuguesa e inglesa nas bases de dados PubMed, BBO, LILACS, MEDLINE e SciELO, publicados no período de 1994 a 2009, utilizando, para as buscas, os unitermos "Panorâmica" (Panoramic), "Ateroma" (Atheroma) e "AVC" (Stroke). Nessa revisão, enfatiza-se que as radiografi as panorâmicas e as tomografi as solicitadas pelo cirurgião-dentista rotineiramente podem delatar precocemente a presença de ateromas carotídeos, que pode ajudar a prevenir ou tratar precocemente arteriopatias graves quando são assintomáticas. Assim, a divulgação entre os cirurgiões dentistas da possibilidade de diagnóstico precoce de ateromas por meio de exames de imagem odontológicos rotineiros emerge juntamente com a prática de uma odontologia holística.
Introduction: This study quantitatively evaluated the type and amount of image artifacts generate... more Introduction: This study quantitatively evaluated the type and amount of image artifacts generated by different intracanal materials in birooted teeth scanned at different exposure parameters. Methods: The sample consisted of 15 birooted premolars. Seven different intracanal material combinations were used in each tooth one at a time: (1) roots without intracanal materials, (2) roots with gutta-percha, (3) a buccal root with gutta-percha and a lingual root with a fiberglass post, (4) a buccal root with gutta-percha and a lingual root with a metal core fiberglass post, (5) buccal and lingual roots with fiberglass posts, (6) buccal and lingual roots with metal core fiberglass posts, and (7) buccal and lingual roots with NiCr metal posts. Cone-beam computed tomographic scans were acquired using a CS 9000 unit (Carestream Dental, Atlanta, GA). An image of each tooth was captured under 5 exposure parameters: 2.5, 4, 6.3, 8, and 12 mA. The voxel size, field of view, and tube voltage were fixed at 0.076 mm, 5 Â 3.75 cm, and 75 kV. We assessed each artifact quantitatively using ImageJ's threshold tool (National Institutes of Health, Bethesda, MD) to determine the hypodense and hyperdense artifact areas within 8-bit images extracted from the scans. All analyses were conducted with a 95% confidence level (a <0.05). Results: The inferential analysis showed that roots filled with metal posts presented the highest amount of hypodense and hyperdense artifacts, whereas fiberglass post in both roots presented fewer artifacts. All materials presented more hypodense than hyperdense artifact formation. Overall, the low-exposure settings presented fewer artifacts and higher values of preserved dental images. Conclusions: Low-exposure protocols and fiberglass posts presented fewer image artifacts in CBCT scans.
The aim of this study was to characterize the profile of elderly Brazilians with injuries resulti... more The aim of this study was to characterize the profile of elderly Brazilians with injuries resulting from physical violence and identify victimization differences. A descriptive and exploratory study was conducted involving the analysis of medico-legal and social records of 259 elderly victims of physical violence treated at an Institute of Forensic Medicine and Dentistry over four years (from January 2008 to December 2011). The forensic service database was evaluated by researchers properly trained and calibrated to perform this function between January and March 2013. Socio-demographic variables of victims, aggression characteristics, aggressor's profile and types of lesions were evaluated. Descriptive and multivariate statistics using Multiple Correspondence Analysis (MCA) were performed. The prevalence of facial trauma was 42.9%. Based on the MCA results, two groups with different victimization profiles were identified: married men aged 70-79 years, victims of community violence at night, suffering facial injuries; and single, widowed or separated women aged 60-69 years, victims of domestic violence during the day, suffering trauma in other areas of the body. The results suggest that there is a high prevalence of facial injuries among elderly Brazilians victims of physical violence and there are important differences related to victimization characteristics according to gender. 2016 Elsevier Ireland Ltd. All rights reserved.
This research aimed to compare the efficacy of digital panoramic radiography (DPR) with that of c... more This research aimed to compare the efficacy of digital panoramic radiography (DPR) with that of cone beam computed tomography (CBCT) for delineation of odontogenic and nonodontogenic tumors. From November 2009 through March 2011, 23 tumors in the maxillomandibular complex were diagnosed by histopathological examination. All DPRs and CBCTs were obtained and analyzed by a single previously calibrated radiologist, who considered the following radiographic aspects: clarity of the lesion edges, relation with dental elements, involvement of adjacent anatomical structures, cortical bone expansion and disruption, and, if present, type of involved anatomical structures and site of bone expansion and disruption. Of 23 patients, 15 (65.2%) were male and 8 (34.8%) were female. The tumor was classified as odontogenic in 73.9% of patients and nonodontogenic in 26.1% of patients. Analysis revealed that 56.5% of the tumors were located in the mandible, 34.8% in the maxilla, and 8.7% in both arches....
Quintessence international (Berlin, Germany : 1985), 2012
Mucopolysaccharidosis (MPS) is a group of rare metabolic diseases characterized by intralysosomal... more Mucopolysaccharidosis (MPS) is a group of rare metabolic diseases characterized by intralysosomal accumulation of glycosaminoglycans. MPS type VI or Maroteaux-Lamy syndrome is an autosomal-recessive syndrome caused by mutations in the lysosomal enzyme arylsulfatase B. A defect in the gene leads to accumulation of nondegraded mucopolysaccharides, resulting in severe cellular dysfunction with multisystem expression. The oral manifestations of MPS VI are not well described in the literature. This paper presents a series of seven patients with MPS VI, with the description of the general clinical manifestations and focus on the still rarely studied oral manifestations of the syndrome. Among them were high palate, open bite, impacted and/or included teeth, thickening of the pericoronal follicle, and changes in the temporomandibular joint.
(UEPB) 2. Professor Doutor do Programa de Pós-Graduação em Odontologia da UEPB RESUMO O acidente ... more (UEPB) 2. Professor Doutor do Programa de Pós-Graduação em Odontologia da UEPB RESUMO O acidente vascular cerebral (AVC) tem-se destacado como uma síndrome frequente nas sociedades ocidentais, onde 50% das mortes entre idosos estão associadas a esta condição. A presença de ateromas carotídeos contribui para seus altos índices de prevalência, e o seu diagnóstico precoce pode contribuir signifi cativamente para a redução dos AVCs. A rotina odontológica atual necessita, cada vez mais, de exames de imagem, tais como radiografi as panorâmicas e exames tomográfi cos de face, que podem mostrar, mesmo não intencionalmente, a presença de ateromas carotídeos. Assim, foi realizada uma revisão não sistemática de artigos nas línguas portuguesa e inglesa nas bases de dados PubMed, BBO, LILACS, MEDLINE e SciELO, publicados no período de 1994 a 2009, utilizando, para as buscas, os unitermos "Panorâmica" (Panoramic), "Ateroma" (Atheroma) e "AVC" (Stroke). Nessa revisão, enfatiza-se que as radiografi as panorâmicas e as tomografi as solicitadas pelo cirurgião-dentista rotineiramente podem delatar precocemente a presença de ateromas carotídeos, que pode ajudar a prevenir ou tratar precocemente arteriopatias graves quando são assintomáticas. Assim, a divulgação entre os cirurgiões dentistas da possibilidade de diagnóstico precoce de ateromas por meio de exames de imagem odontológicos rotineiros emerge juntamente com a prática de uma odontologia holística.
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