ASDC journal of dentistry for children最新文献

A comprehensive assessment of the dental characteristics of 23 patients with Duchenne muscular dystrophy (DMD) was carried out, based on dental records, oral examinations and dental models. Decreasing muscle function was associated with increased plaque and calculus accumulation, leading to gingival inflammation, but caries experience was low. Disturbances in tooth form, number and eruption of the second premolars were observed in 39% of patients. Anterior and posterior open bites were common, associated with lip incompetence, mouth breathing, macroglossia and tongue thrusting. Maxillary and mandibular arch breadths were significantly larger, on average, in the DMD group than in controls. Rather than a normal parabolic arch form, the dental arches in DMD patients tended to be hyperbolic, with the posterior teeth being displaced buccally, consistent with an imbalance between the lingual and facial musculature.

The aim of this study was to examine the prevalence of C. albicans in the oral cavities and root canals of children. Twenty healthy and caries-free children and 13 children with caries, were screened. Imprint samples and sterile paper points were used to obtain the samples from oral cavities and root canals respectively. The production of germ tubes and the development of chlamydospores identified yeast cultures. Sixty-nine percent of children with caries and 5% of caries-free children were found to be Candida carriers. The difference in candidal prevalence between two groups was significant (p < 0.05). Sixty-one point five percent of children were positive for Candida in the root canal. Since, increase in the C. albicans in the oral cavity provides a potential source of the fungus particularly when resistance falls below a certain threshold, attention to strategies for the reduction of this pervasive and persistent pathogen becomes important. Therefore, reduction of caries and or introduction of antifungal agents during root canal treatment of children may be offered.

The purpose of the present study was to evaluate the prevalence of early childhood caries among preschool children aged between 12 and 36 months from poor communities in the city of Recife, Brazil. This prevalence was evaluated along with the type and duration of feeding, supplementary diet in terms of cariogenicity and quantity of sugar intake. Of the 468 children studied, 28.46% presented caries and the association between the variable of a cariogenic diet and caries was strongly significant (x2 = 13.36 and p < 0.001). From the results of the present study it is possible to draw the following conclusions: the prevalence of early childhood caries in poor children aged 12-36 months in the city of Recife is in accordance with that found in other Brazilian cities, but is very high compared to that of the world population. Early childhood caries was not found to be related to the type of feeding; however, the number of sugary snacks between meals and a cariogenic diet were strongly related to early childhood caries. The prevalence of early childhood caries increases with age; and the first signs of the carious lesions were only detected after the eruption of the first molars, starting at 18 months.

This is a case study of an inflammatory follicular cyst associated with an endodontically treated deciduous molar with radiographic and microscopic diagnosis. This cystic lesion represents a typical follicular cyst that arose in association with periapical inflammation from a non-vital deciduous molar and involved the follicle of the unerupted successor premolar. This paper describes the case and discusses diagnosis, histogenesis, and controversies regarding terminology.

The rate of child abuse and neglect cases per population may have been decreasing, but there have been increases in the actual number of cases. A review of federal reports serves as an alert for dental practitioners to maintain their vigilance as 1) primary care providers of children, and 2) mandated reporters of child abuse.

The present study compared the shearing strength of a non-rinse conditioning (NRC) compomer sealant to that of a conventional sealant. Thirty molars and premolars were sectioned longitudinally. The resulting halves were divided into 4 groups. Cylinders of sealants were bonded to the sections using a gelatin capsule as a matrix, as follows: Group A (n = 15) NRC + Prime & Bond + Dyract Seal; Group B (n = 15) same as group A but with phosphoric acid and rinse; Group C (n = 15) conventional phosphoric acid + Helioseal; Group D (n = 15) NRC + Helioseal. After immersing the specimens in water for 7 days, the samples were mounted on the Instron testing machine at a 20 mm/min crosshead speed. The results were subjected to ANOVA with Scheffe test, with a significant level of .05. No shearing strength values could be obtained for the specimens of group D. Some cylinders separated from the enamel while still immersed in the water, and in others the adhesion was too low, and no readings could be observed. For all groups, failure occurred at the sealant-enamel interface. The mean value for group A was 5.33 MPa, significantly less than that of groups B 9.12 MPa and C 9.63 MPa (p < 0.006). No significant difference of the mean shear strength was evident between groups B and C. No rinse conditioning with Dyract Seal led to a considerably lower bond strength value than Dyract Seal and Helioseal with phosphoric acid and rinsing.

Some authors have noticed a clear decrease of the width of keratinized gingiva when they compared the width over deciduous and newly erupted permanent teeth. The aim of this cross-sectional study was to assess the width of keratinized gingiva over permanent and deciduous teeth present in 6 to 11-year old children in an urban environment. The greatest width of keratinized gingiva was found over deciduous canines and permanent incisors. When comparing the width of keratinized gingiva over deciduous canines and molars and permanent first incisors and first molars, statistically significant differences were found only between 6- and 11-year-old groups. The findings do not seem to support previously published data, but do suggest that periodontal mucogingival surgery is not needed before the patient reaches the adult age, since there is a tendency of an increase of the width of keratinized gingiva.

A federal agency's extensive report on the well-being of our children at the beginning of the new millennium provides an opportunity to review the many achievements and remaining concerns about the health and social environment of the children in our communities and in many of our dental practices.