Tandlaegebladet最新文献

During the past decade usage of the fissure sealant technique for occlusal caries prevention has been increasingly recommended. This study explores variations in indications and usage of this technique in Denmark. A questionnaire was sent to 205 chief dental officers in the Danish Public Child Dental Health Service (PDHS) covering 90% of Danish children and to municipalities, where dental health to children is provided by private practitioners. More than half of the respondents did not use firmly defined criteria for fissure sealant application. Oral hygiene and previous caries experience were most often stated as indications. Actual usage of the sealant technique differed significantly from the PDHS and private clinics. Thus, 33% of the chief dental officers in the PDHS said that sealants were routinely applied to 8- and 13-year-olds, 43% to 30-80% of the children, and 15% used sealants to less than 10% of 8- and 13-year-olds. In contrast, only 5% of the private clinics reported routinely use of sealing technique, 22% used application to 30-80% of the children, while more than one third of the private practitioners used sealants to less than 10% of the 8- and 13-year-olds. In spite of the significant difference in sealant usage between PDHS and private practitioners, it was not possible to see a corresponding difference neither in caries prevalence nor in occlusal filling incidence. Moreover, analysis of PDHS caries prevalence data revealed that PDHS variations could not be explained by variations of risk in terms of social classes and caries incidence.(ABSTRACT TRUNCATED AT 250 WORDS)

A case of osteoma in the angular mandibular region is presented and discussed. A survey of the literature on osteomas shows some confusion about the classifications exostosis and torus, which in a number of cases should be regarded as hamartomaz.

The technique factors when performing intraoral X-ray exposures must be selected in such a way that sufficient diagnostic information is obtained at a reasonable patient dose. The Danish National Institute of Radiation Hygiene has performed a study comprising 32 dental X-ray sets. The mean value of the skin dose for a maxillary molar was 9.6 mGy and the value for the dental colleges 7.0 mGy. For a mandibular incisor the corresponding doses were 7.7 mGy and 3.6 mGy. After the conclusion of the mentioned study it has been part of the institute's inspection procedure for dental X-ray sets to measure patient skin doses. 243 measurements were performed and the mean value of the entrance skin dose was 6.5 mGy and the dose interval was 0.7-57 mGy. All doses are normalised to speed class D film. At 16% of the inspected sets films of speed class E were used. The remainder used class D films. The spread in doses cannot be explained by variation in equipment parameters alone but is to a high degree due to a combination of inappropriate film processing and exposure time. Interviews with staff in dental clinics confirm that films are frequently processed until the desired density is obtained by visual estimation. It is shown that the skin dose when using film of speed class D can be kept below 7 mGy for a mandibular incisor. Concluding is stated that film processing shall be performed in accordance with specifications from the manufacturer of the developer. Film of speed class E must be used. Finally must the exposure time be graduated according to the object exposed.

A patient with lesions of the oral mucosa is presented. Biopsy of the lesions showed deposits of amyloid, which lead to further examination of the patient, revealing a generalized amyloidosis.

Synovial chondromatosis of the temporomandibular joint is a rare, benign condition of unknown etiology. It is characterised by the presence of loose cartilage bodies in the joint space which gradually leads to increased functional disturbances. The clinical, radiological, histopathological and therapeutical aspects are presented together with a new case report.

An enormous number of products and types of oral implants exists. In identification of implants previously inserted by other dentists radiography is essential. The radiographic images of 14 fixtures were analyzed and explained based on experimental exposures under standardized circumstances. In particular was the influence of different viewing angles due to rotational position of the fixture described. It is concluded that any of the metallic fixtures studied possesses macrostructures which will lead to a unique radiographic image making it possible to recognize it on radiographs. On the other hand the images will vary widely depending on rotational stage of the fixture why a thorough knowledge of the detailed architecture of the implants is necessary.