Attention deficit hyperactivity disorder (ADHD) is a serious disability with long-term consequenc... more Attention deficit hyperactivity disorder (ADHD) is a serious disability with long-term consequences. At present the disorder is considered organic in pathology, particularly in regard to central nervous system functioning. This paper reviews research on ADHD. The role of neurochemical stimulation is discussed, and the signs of neurological deficits are explored. Nearly 600,000 young people in the United States receive medication daily for ADHD, and these drugs mimic brain neurotransmitters. The chemical action of these drugs and the cognitive, affective, and behavioral effects are discussed. Side effects and dosage levels are also examined. Basic behavior modification with ADHD children and how these techniques can be combined with effective drug treatment are elaborated.
Objective: The aim of present study was to determine the association of falls and not resilient g... more Objective: The aim of present study was to determine the association of falls and not resilient ground with the type of dental trauma and their complications at traumatized primary teeth. Method: A retrospective descriptive study using the clinical data from 241 patient charts at the Traumatized Patient Care Program of Federal University of Santa Catarina. The following data were collected: gender, age of child at time of trauma(≤36 or >36 months), how the injury occurs (fall or collision), where the injury occurs (home or others), type of ground (not resilient or resilient), type of dental trauma (mild or severe) and complications (none, mild or severe). Descriptive analysis and the chi-square test (P<0.05) were performed. Result: The occurrence of trauma was higher in male patients (56%) and in children below 36 months (56%). It was observed that most of the injuries occurred at home (69%), and falls were the main cause of trauma (60.2%). According to the type of dental trau...
Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium... more Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium hypochlorite 1% (NaClO) with regard to the diffusion of calcium and hydroxyl ions through the root dentin of primary teeth. Method: Thirty roots were used, with the cementum and crown removed and measuring a standardized seven mm. After sealing the apex, the canals were cleaned and shaped and irrigated with NaClO. For the final irrigation, the roots were separated into three groups: G1- NaClO; G2- EDTA 17%; and G3 (control)- with no final irrigation. The canals in G1 and G2 were filled with a calcium hydroxide solution mixed with the radioisotope calcium-45. After the opening was sealed, the roots were submerged in individual recipients containing 1.0 ml of saline solution. The diffusion of calcium and hydroxyl ions was determined by counts per minute and pH, respectively, after one, three and seven days. Result: Regarding calcium, a significantly greater amount of ions was released in ...
European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry, 2016
This was to evaluate the prevalence of the developmental defects of enamel (DDE) in primary teeth... more This was to evaluate the prevalence of the developmental defects of enamel (DDE) in primary teeth and its association with dental caries. A cross-sectional study with a randomised representative sample was carried out with 1101 children aged 2-5 years enrolled in public preschools (50% prevalence of DDE in primary teeth, a standard error of 3%, and a confidence level of 95%). Three calibrated dentists (K > 0.62) performed clinical examination. Data collected were: sex, age, DDE (Modified DDE Index) and dental caries (WHO). Descriptive analysis, Chi-square test and multinomial logistic regression were applied for data analysis. Among children, 565 (51.3%) were boys; mean age was 3.7 (±0.9 years). The prevalence of enamel defect was 39.1%; the prevalence of diffuse opacities, demarcated opacities and enamel hypoplasia was 25.3, 19.1 and 6.1%, respectively. The prevalence of dental caries was 31.0%, with mean def-t 1.14 (±2.44). Primary teeth with enamel hypoplasia had three times t...
The aim of this study was to present the literatures on the use of sodium fluoride varnish in ped... more The aim of this study was to present the literatures on the use of sodium fluoride varnish in pediatric dentistry. Data were analyzed and grouped to present a comparison of the effective- ness of sodium fluoride varnish with other products in the preven- tion of dental caries, its effects on the remineralization of incipient caries and erosion. Based on the analysis of published articles, the varnish sodium fluoride is the most effective product in tre- ating demineralization and remineralization of caries in enamel; the varnish of titanium tetrafluoride was especially effective in preventing dental erosion; silver diamine fluoride, chlorhexidine varnish and sealant showed better effects than the sodium fluo- ride varnish in arresting caries in dentin in control visible plaque and prevention of lesions in the pits and fissures, respectively.
The periapical lesion is the result of a local inflammatory reaction caused by bacteria and its p... more The periapical lesion is the result of a local inflammatory reaction caused by bacteria and its products present on the root canal. The interaction between inflammatory cells and bacteria elicit both specific and non-specific immune responses. Due to the lack of studies evaluating the role of the immune system in periapical lesions of primary teeth and considering the potentially systemic effects that these infections can cause in children, especially because of the immaturity of their immune system, we sought to evaluate the presence of T cells, B cells and macrophages on periradicular lesions in primary teeth. 14 periradicular lesions were analyzed. The immunohistochemistry technique was performed using CD45RO, CD20, CD68 monoclonal antibodies aiming to identify T cells, B cells and macrophages, respectively. Cells were quantified by microscopic analysis of histological sections. Mean percentage of positive cells CD45RO was 11.76; CD20 was 5.25; CD68 was 10.92. Our results showed ...
Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium... more Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium hypochlorite 1% (NaClO) with regard to the diffusion of calcium and hydroxyl ions through the root dentin of primary teeth. Method: Thirty roots were used, with the cementum and crown removed and measuring a standardized seven mm. After sealing the apex, the canals were cleaned and shaped and irrigated with NaClO. For the final irrigation, the roots were separated into three groups: G1- NaClO; G2- EDTA 17%; and G3 (control)- with no final irrigation. The canals in G1 and G2 were filled with a calcium hydroxide solution mixed with the radioisotope calcium-45. After the opening was sealed, the roots were submerged in individual recipients containing 1.0 ml of saline solution. The diffusion of calcium and hydroxyl ions was determined by counts per minute and pH, respectively, after one, three and seven days. Result: Regarding calcium, a significantly greater amount of ions was released in ...
Journal of Indian Society of Pedodontics and Preventive Dentistry, 2008
The higher incidence of dental erosion in children and teenagers possibly reflects a high intake ... more The higher incidence of dental erosion in children and teenagers possibly reflects a high intake of acidic food and beverages as well as a more frequent diagnosis on this condition. The aim of this study was to evaluate the erosive potential of acidic filling of chewing gum in primary and permanent enamel. Eighty enamel blocks (40 primary and 40 permanent teeth) were used and randomly distributed into eight groups. Groups were divided according to types of dental substrates (permanent or primary), frequency of exposure to the acidic substance (2X or 4X/day), and concentration (pure or diluted). Exposure time to the acidic content of the chewing gum was five minutes under agitation, during five days. All groups showed a significant decrease in surface microhardness (P P = 0.002), D3 (pure, 4X/day) and D4 (diluted, 4X/day) (P = 0.009) regarding the concentration, then the diluted acid content was associated with a greater decrease in microhardness. It is concluded that the acidic filling of a chewing gum reduced the microhardness of primary and permanent enamel.
Attention deficit hyperactivity disorder (ADHD) is a serious disability with long-term consequenc... more Attention deficit hyperactivity disorder (ADHD) is a serious disability with long-term consequences. At present the disorder is considered organic in pathology, particularly in regard to central nervous system functioning. This paper reviews research on ADHD. The role of neurochemical stimulation is discussed, and the signs of neurological deficits are explored. Nearly 600,000 young people in the United States receive medication daily for ADHD, and these drugs mimic brain neurotransmitters. The chemical action of these drugs and the cognitive, affective, and behavioral effects are discussed. Side effects and dosage levels are also examined. Basic behavior modification with ADHD children and how these techniques can be combined with effective drug treatment are elaborated.
Objective: The aim of present study was to determine the association of falls and not resilient g... more Objective: The aim of present study was to determine the association of falls and not resilient ground with the type of dental trauma and their complications at traumatized primary teeth. Method: A retrospective descriptive study using the clinical data from 241 patient charts at the Traumatized Patient Care Program of Federal University of Santa Catarina. The following data were collected: gender, age of child at time of trauma(≤36 or >36 months), how the injury occurs (fall or collision), where the injury occurs (home or others), type of ground (not resilient or resilient), type of dental trauma (mild or severe) and complications (none, mild or severe). Descriptive analysis and the chi-square test (P<0.05) were performed. Result: The occurrence of trauma was higher in male patients (56%) and in children below 36 months (56%). It was observed that most of the injuries occurred at home (69%), and falls were the main cause of trauma (60.2%). According to the type of dental trau...
Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium... more Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium hypochlorite 1% (NaClO) with regard to the diffusion of calcium and hydroxyl ions through the root dentin of primary teeth. Method: Thirty roots were used, with the cementum and crown removed and measuring a standardized seven mm. After sealing the apex, the canals were cleaned and shaped and irrigated with NaClO. For the final irrigation, the roots were separated into three groups: G1- NaClO; G2- EDTA 17%; and G3 (control)- with no final irrigation. The canals in G1 and G2 were filled with a calcium hydroxide solution mixed with the radioisotope calcium-45. After the opening was sealed, the roots were submerged in individual recipients containing 1.0 ml of saline solution. The diffusion of calcium and hydroxyl ions was determined by counts per minute and pH, respectively, after one, three and seven days. Result: Regarding calcium, a significantly greater amount of ions was released in ...
European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry, 2016
This was to evaluate the prevalence of the developmental defects of enamel (DDE) in primary teeth... more This was to evaluate the prevalence of the developmental defects of enamel (DDE) in primary teeth and its association with dental caries. A cross-sectional study with a randomised representative sample was carried out with 1101 children aged 2-5 years enrolled in public preschools (50% prevalence of DDE in primary teeth, a standard error of 3%, and a confidence level of 95%). Three calibrated dentists (K > 0.62) performed clinical examination. Data collected were: sex, age, DDE (Modified DDE Index) and dental caries (WHO). Descriptive analysis, Chi-square test and multinomial logistic regression were applied for data analysis. Among children, 565 (51.3%) were boys; mean age was 3.7 (±0.9 years). The prevalence of enamel defect was 39.1%; the prevalence of diffuse opacities, demarcated opacities and enamel hypoplasia was 25.3, 19.1 and 6.1%, respectively. The prevalence of dental caries was 31.0%, with mean def-t 1.14 (±2.44). Primary teeth with enamel hypoplasia had three times t...
The aim of this study was to present the literatures on the use of sodium fluoride varnish in ped... more The aim of this study was to present the literatures on the use of sodium fluoride varnish in pediatric dentistry. Data were analyzed and grouped to present a comparison of the effective- ness of sodium fluoride varnish with other products in the preven- tion of dental caries, its effects on the remineralization of incipient caries and erosion. Based on the analysis of published articles, the varnish sodium fluoride is the most effective product in tre- ating demineralization and remineralization of caries in enamel; the varnish of titanium tetrafluoride was especially effective in preventing dental erosion; silver diamine fluoride, chlorhexidine varnish and sealant showed better effects than the sodium fluo- ride varnish in arresting caries in dentin in control visible plaque and prevention of lesions in the pits and fissures, respectively.
The periapical lesion is the result of a local inflammatory reaction caused by bacteria and its p... more The periapical lesion is the result of a local inflammatory reaction caused by bacteria and its products present on the root canal. The interaction between inflammatory cells and bacteria elicit both specific and non-specific immune responses. Due to the lack of studies evaluating the role of the immune system in periapical lesions of primary teeth and considering the potentially systemic effects that these infections can cause in children, especially because of the immaturity of their immune system, we sought to evaluate the presence of T cells, B cells and macrophages on periradicular lesions in primary teeth. 14 periradicular lesions were analyzed. The immunohistochemistry technique was performed using CD45RO, CD20, CD68 monoclonal antibodies aiming to identify T cells, B cells and macrophages, respectively. Cells were quantified by microscopic analysis of histological sections. Mean percentage of positive cells CD45RO was 11.76; CD20 was 5.25; CD68 was 10.92. Our results showed ...
Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium... more Objective: The aim of this in vitro study was to compare final irrigation with EDTA 17% to sodium hypochlorite 1% (NaClO) with regard to the diffusion of calcium and hydroxyl ions through the root dentin of primary teeth. Method: Thirty roots were used, with the cementum and crown removed and measuring a standardized seven mm. After sealing the apex, the canals were cleaned and shaped and irrigated with NaClO. For the final irrigation, the roots were separated into three groups: G1- NaClO; G2- EDTA 17%; and G3 (control)- with no final irrigation. The canals in G1 and G2 were filled with a calcium hydroxide solution mixed with the radioisotope calcium-45. After the opening was sealed, the roots were submerged in individual recipients containing 1.0 ml of saline solution. The diffusion of calcium and hydroxyl ions was determined by counts per minute and pH, respectively, after one, three and seven days. Result: Regarding calcium, a significantly greater amount of ions was released in ...
Journal of Indian Society of Pedodontics and Preventive Dentistry, 2008
The higher incidence of dental erosion in children and teenagers possibly reflects a high intake ... more The higher incidence of dental erosion in children and teenagers possibly reflects a high intake of acidic food and beverages as well as a more frequent diagnosis on this condition. The aim of this study was to evaluate the erosive potential of acidic filling of chewing gum in primary and permanent enamel. Eighty enamel blocks (40 primary and 40 permanent teeth) were used and randomly distributed into eight groups. Groups were divided according to types of dental substrates (permanent or primary), frequency of exposure to the acidic substance (2X or 4X/day), and concentration (pure or diluted). Exposure time to the acidic content of the chewing gum was five minutes under agitation, during five days. All groups showed a significant decrease in surface microhardness (P P = 0.002), D3 (pure, 4X/day) and D4 (diluted, 4X/day) (P = 0.009) regarding the concentration, then the diluted acid content was associated with a greater decrease in microhardness. It is concluded that the acidic filling of a chewing gum reduced the microhardness of primary and permanent enamel.
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Papers by M. Bolan