Biomedical subjects

Christian H Splieth

Publications and source records attributed to Christian H Splieth.

3 recordsLinked to original sources

PubMed2007

Prevalence of oral mucosal lesions in a representative population.

OBJECTIVE: The aim of this study was to assess the prevalence and intraoral distribution of oral mucosal lesions in a representative adult population (Study of Health in Pomerania/Germany). METHOD AND MATERIALS: The study sample comprised 6267 randomly selected subjects who were scheduled for examination from 1997 to 2001 (population-based cross-sectional study; response rate: 69%; age range 20 to 81 years). RESULTS: The prevalence of oral mucosal lesions was age dependent (5.56% in 20- to 29-year-olds to 19.55% in 70- to 81-year-olds) with an overall prevalence of 11.83%. The prevalence in men (12.20%) was slightly higher than in women (11.40%). Exophytic neoplasia was the most prevalent alteration (3.00%), followed by leukoplakia simplex (prevalence 2.85%). Premalignant lesions were found in 0.57% of the participants, with lichen ruber mucosae contributing the major part (0.48%). Exophytic neoplasia was most often situated in the buccal mucosa, the hard palate, or the mucosa of the lower lip. CONCLUSION: These data stress the importance of screening for oral mucosal lesions, especially because of a predicted increase in the number of elderly persons in industrialized countries.

Adult↗

PubMed2006

An occlusal plaque index. Measurements of repeatability, reproducibility, and sensitivity.

PURPOSE: To evaluate a new, computerized method of measuring dental plaque on occlusal surfaces which exhibit the highest caries prevalence. METHODS: In 16 patients (6-9 years of age), plaque on the occlusal surfaces of permanent molars was stained (Mira-2-Tone) and photographed with an intra-oral camera. In a conventional picture editing program (PC/Adobe PhotoShop 6.0), the occlusal surface and plaque were measured in pixels and the relative proportion of occlusal plaque was calculated (ANALYSIS 3.0). The repeatability and reproducibility of the method were analyzed by re-taking and analyzing four images by two examiners four times via intra- and inter-examiner correlation coefficients and by re-analyzing 10 images. Sensitivity was tested by re-taking and analyzing the images of the same occlusal surfaces in all patients after instructed brushing with an electric toothbrush. RESULTS: Intra- and inter-examiner correlation coefficients for repeatability and reproducibility of the analysis were excellent (ICC> 0.997 and ICC=0.98, resp.; 95% confidence interval: 0.955-0.995). The inter- and intra-examiner coefficients for the whole procedure including the re-taking of images were also high (ICC > 0.90). The method was also highly sensitive, proving a statistically significant plaque reduction after brushing (before: mean 29.2% plaque, after: 14.7% plaque; t-test, P= 0.025).

Child↗

PubMed2005

Standardizing interarch tooth-size harmony in a Syrian population.

The Bolton analysis is considered to be a good indicator for evaluating the degree of intermaxillary tooth-size harmony, but the possibility of ethnic variation of these values should be examined. Thus, the aim of this study was to calculate both the anterior and overall ratios of mandibular and maxillary tooth sizes for a Syrian sample of harmonious permanent dentitions and to compare these ratios with the data from the Bolton and the Michigan studies. In plaster models of 55 Syrian patients (11-22 years) with neutral occlusion (Angle Class I), harmonious overjet and overbite, no reduction of mesiodistal tooth width or missing teeth, the mesiodistal widths of each tooth from the incisors to the first permanent molars were measured in both arches. In the statistical data analysis, the anterior and overall ratios were calculated according to Bolton. The results for the anterior ratio (78.99 +/- 2.18) and the overall ratio (92.26 +/- 2.06) showed no statistically significant differences by sex (P > .48). These values and the degree of variation were similar to the original data by Bolton. Both studies differed considerably from the values of the anterior ratio found in the Michigan University study, which also shows a higher degree of variability. Nevertheless, the overall ratios of all three studies were very similar. Therefore, the interarch tooth-size analysis and values for a harmonious dentition developed by Bolton can also be transferred to an Arabian or at least a Syrian population.

Adolescent↗