ASDC journal of dentistry for children最新文献

Impalement injury and implantation of a foreign body in the oral cavity is common in young children. Typically the child falls with the foreign body in the mouth resulting in implantation of the object at various sites in the oral cavity. It is quite unusual to have the head of a toothbrush with bristles implanted fully in the soft tissue medial to the ramus, in the region of pterygomandibular space, following an injury with a cricket ball without a history of fall. A case of an unusual foreign body implanted at an unusual site by an unusual injury is being presented.

The aim of this clinical study was to test cut-offs for occlusal caries detection by the laser fluorescence device DIAGNOdent (DD) in comparison to visual-ranked inspection (VI) and bitewing radiographs (BW) under condition of a general dental practice. 281 occlusal surfaces of permanent molars from 97 patients were examined with VI, DD and BW. Caries extent was verified by bioptical intervention (gold standard) of 248 molars. Upon biopsy no molar was assessed as caries free, 24 teeth had caries confined to enamel and 224 teeth revealed dentine caries. For dentine caries detection DD achieved the highest values for sensitivity (0.93), specificity (0.63) and agreement (0.89) followed by BW with figures of 0.70, 0.96 and 0.69, respectively. VI exhibited the lowest sensitivity (0.25) and agreement (0.25), but the highest specificity (1.00). It is advised to assess occlusal surfaces by a meticulous VI followed by the use of DD and/or BW as additional diagnostic tool of second choice. A DD value of > 20 could be confirmed as a sensitive cut-off for detection of occlusal dentine caries in first and second permanent molars. For the detection of early signs of enamel caries the DD seems to be less suitable.

The purpose of this study was to determine the acceptance of 3 types of mouthguards 1) stock, 2) boil and bite, and 3) custom-made by 7-8 year old children playing organized soccer. Three teams volunteered to participate and the type of mouthguard was randomly selected for each team. The children were fitted for the mouthguards and after wearing them, a questionnaire was returned to the investigator. Eighty two percent of the children wearing custom made mouthguards and 87% of the boil and bite ranged from happy to enthusiastic about its use. None of the children provided stock mouthguards reported liking their use. Only 1 child in the custom group failed to wear the appliance during practice and games while the children in the stock group ranged from 20% to all of the time. Ninety five percent of the parents believe that children should wear mouthguards when injuries may occur. However, only 24% of the parents would be willing to pay $25.00 for this protection. It is concluded that mouthguards will be used by children during organized sports activities if they fit.

The term infraclusion is usually used to define mandibular primary teeth in posterior region that remain below the occlusion level. The degree of infraclusion depends on some factors like deviation below the occlusal plane, and infraclusion of tooth in the alveolar bone. Deficient eruptive force, disturbed metabolism of the periodontal ligament, trauma, local inflammation, deficient local vertical bone growth, disturbance in interaction between normal resorption and hard tissue repair, ankylosis and hereditary components have been given as etiological factors. Complications of infraclused primary molars are tipping of the neighboring teeth, space loss, supraeruption of the antagonists, and dislocations of permanent teeth lying under the primary tooth. In this case report, after reviewing the literature a patient with infraclused mandibular primary second molar has been examined to observe the complications of infraclusion. With an appropriate treatment approach, a proper condition was prepared for the eruption of permanent teeth.

Unlabelled: It is commonly believed that teething in infants can cause a variety of signs and symptoms. Previous studies have suggested an association between teething and fever, irritability, drooling, rashes, vomiting, diarrhea, night crying, and convulsions.

Purpose: The objective of this study was to evaluate differences in the beliefs of pediatricians, pediatric dentists and parents regarding symptoms caused by teething in infants.

Methods: A survey consisting of demographic information and questions concerning commonly reported symptoms associated with teething was administered to 100 randomly selected Iowa pediatricians, all practicing pediatric dentists in Iowa (n = 33) and a convenience sample of 120 parents from the greater Iowa City area. Responses were analyzed using the Chi-square test.

Results: Response rates for each group were: pediatricians 45%; pediatric dentists 76%; and parents 50%. The majority of individuals in each group believed that teething in infants can cause swollen gums, drooling, irritability, inflamed gums, restlessness, sleeplessness, and fever. There were significant differences in the percent of agreement relating to drooling (p = 0.001), inflamed gums (p = 0.001), and sleeplessness (p = 0.027). A greater percentage of pediatric dentists and parents agreed that these symptoms were caused by teething than did pediatricians. The largest difference between groups was related to the association between teething and diarrhea. The majority of parents (56.7%) and pediatric dentists (52.0%) believed that diarrhea is associated with teething compared to just 9.1% of pediatricians.

Conclusions: These results support the hypothesis that differences regarding beliefs about teething symptoms exist between parents, pediatricians, and pediatric dentists. There is more agreement between parents and pediatric dentists than between either of these groups and pediatricians.

A 10-year-old Japanese girl with severe tooth mobility in her lower permanent incisors was examined clinically, as well as radiographic and microbiological means. The incisors had severe alveolar bond loss and pocket depths exceeding 7 mm at the first visit, however, 10 periodontal bacteria were not detected in subgingival plaque samples taken from the lower central incisors using a 16S rRNA-based polymerase chain reaction method. Periodontal treatment consisting of mechanical debridement and antibiltic medication resulted in a significant improvement of the clinical parameters. Three months after the first examination, dental radiographs showed refilling of alveolar bone in the region. Further, microbiological examinations after remission detected only oral microflora commonly found in health children including A. actinomycetemcomitans. Based on the clinical, readiographic, and microbiological findings, the present case was diagnosed as acute periodontitis.

Usually infant milk formula is the major source of fluoride in infancy. Fluoride concentrations in ten samples of powdered milk formulas, prepared with deionized, bottled mineral, and fluoridated drinking water were determined after HMDS-facilitated diffusion, using a fluoride ion specific electrode(Orion 9609). Fluoride concentrations ranged from 0.01 to 0.75 ppm; from 0.02 to 1.37 ppm and from 0.91 to 1.65 ppm for formulas prepared with deionized, bottled mineral (0.02 to 0.69 ppm F) and fluorinated drinking water (0.9 ppm F), respectively. Possible fluoride ingestion per Kg body mass ws estimated. With deionized water, only the soy-based- formulas should provide a daily fluoride intake of above the suggested threshold for fluorosis. With water containing 0.9 ppm F, however, all of them would provide it. Hence, to limit fluoride intakes to amounts <0.1 mg/kg/day, it is necessary to avoid use fo fluoridated water (around 1 ppm) to dilute powdered infant formulas.