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PubMed1999

A Rapp-Hodgkin like syndrome in three sibs: clinical, dental and dermatoglyphic study.

Rapp-Hodgkin ectodermal dysplasia is an autosomal dominant disorder characterized by distinctive craniofacies, cleft lip or palate, oligodontia or anodontia, hypoplasia of the nails, and a decrease in or absence of the sweat glands and hair follicles. We have identified a family in which three children display clinical features similar to Rapp-Hodgkin syndrome. The father and two other sisters of the patient had normal facial features, but had short stature and had dental anomalies, the latter suggestive of ectodermal dysplasia. The overall clinical, dental, and dermatoglyphic findings of these patients are discussed in relation to reports of families with Rapp-Hodgkin syndrome.

Abnormalities, Multiple↗
PubMed1992

Changes in comprehensive dental care of the primary dentition from 1979 to 1989. I. Caries diagnosis and prevalence in a population treated at a university dental clinic.

The aim of the study was to monitor caries diagnosis and prevalence from 3 to 8 years of age in 199 children born in 1981, Cohort '81, and to compare the results with those of a similar investigation of 194 children born in 1971, Cohort '71. Cohort '71 was called annually for dental check-ups while Cohort '81 had prolonged check-up intervals. There was a significant difference between the two cohorts in the number of bite-wing exposures; a mean of 3.1 in Cohort '71 and 1.6 in Cohort '81. No bite-wings were taken in 1.1% of the children in Cohort '71 and in 9.5% of those in Cohort '81. At the age of eight years, caries diagnosis was supported by radiography in 76% of the children in both cohorts. In Cohort '71 proximal caries was diagnosed as manifest d-s when it was deeper than two-thirds of the enamel thickness and in Cohort '81, when a lesion had penetrated the enamel or was seen in the dentin. Manifest caries was diagnosed later in Cohort '81 than in Cohort '71. Cohort '81 showed an overall decline in occlusal caries while the distal surfaces of the first primary molars continued to be as vulnerable as in Cohort '71. The structure of the population and the preventive measures did not change but the caries prevalence was halved from 6.3 d-s in 1979 to 3.0 d-s in 1989 in 8-year-old children.

Age Factors↗
PubMed2006

Reducing subjectivity in the evaluation of pre-clinical dental preparations for fixed prosthodontics using the Kavo PrepAssistant.

The evaluation of pre-clinical technical achievement in fixed prosthodontics cannot be objective when using visual examination of dental preparations. This is, however, still the main method used in dental schools. The present study introduces a new method, based on a mathematical formula, to reduce the problem. The idea emerged when using the Kavo PrepAssistant system (software version 1.05). This system is a 3D-scanner with software that can quantify geometrical differences between an instructor and student dental preparation in model teeth. Therefore, a mathematical formula was created, integrating selected clinically relevant geometric characteristics of dental preparations measured by the system. In this new formula, 70% of the evaluation parameters were computer analysed, whilst 30% were visually evaluated. This new method was compared with the traditional visual evaluation system during a pre-clinical practical examination, with the participation of 25 students. Using both methods to evaluate the 25 preparations, results showed similar grading for both methods (K-S test = 0.16; P < 0.05). Although this method does not provide overall clinical evaluation of student performance these results suggest that it can be helpful accessing technical achievement. In this method, the student has the guarantee that 70% of his/her grade results from an objective computer evaluation, with the possibility to visualise the mistakes with the software. It also reduces problems related to the calibration between different examiners. The Kavo PrepAssistant is a powerful tool in pre-clinical teaching, but has some drawbacks. It has to be developed towards the actual needs of pre-clinical departments, in order to achieve its full potential, as described in this study.

Computer-Aided Design↗