A data-based study on survival of permanent molar restorations in adolescents.

Objective: The aim of this epidemiological, data-based survival study was to study the longevity of restorations in permanent molars of adolescents in the 1990 and 1995 birth cohorts during the period of 1992-2005 in the City of Vantaa, Finland.

Materials And Methods: The dental records of 2975 (1990 cohort) and 3147 (the 1995 cohort) adolescents were analyzed. The longevity of restorations from their placement until replacement was illustrated using the Kaplan-Meier survival curves.

Survival of primary molar restorations in four birth cohorts-A retrospective, practice-based study.

Objective: Paediatric restorative dentistry continues being a challenge in everyday clinical practice. Practise-based survival analysis covering entire age cohorts offer an epidemiological approach to this issue in studying survival of restorations in primary teeth. The aim of this study was to compare survival of restorations in primary molars in 1985, 1990, 1995 and 2000 age cohorts associated with some population-related factors.

Effect of office-based brief high-impact exercise on bone mineral density in healthy premenopausal women: the Sendai Bone Health Concept Study.

Although there is ample evidence supporting the effectiveness of physical activity in the prevention and treatment of osteoporosis, there are no previous studies to examine the effect of office-based brief high-impact exercise (HIE) on bone mineral density (BMD) in healthy premenopausal women. This study evaluated the effects of office-based HIE on BMD in healthy premenopausal Japanese women. Ninety-one healthy premenopausal women were randomized to receive stretching exercise (SE) or HIE (stretching, along with up to 5 × 10 vertical and versatile jumps) for 12 months.

Data mining of clinical oral health documents for analysis of the longevity of different restorative materials in Finland.

Evidence-based dentistry has shown that different restorative materials have different survival times. Our primary hypothesis is that this should be revealed from normal dental records by the use of data mining technique and a practice-based dentistry approach analysed in a scientifically sound way. Dental records from 1626 patients and altogether 19,892 restorations in three Finnish age cohorts were analysed.

Practice-based study of the cost-effectiveness of fissure sealants in Finland.

Objective: To retrospectively analyze the cost-effectiveness of sealant treatment in two health centers with different caries preventive strategies in Finland using a practice-based research protocol.

Materials And Methods: The data of digital dental records were data-mined and analyzed retrospectively in the health center in Kemi where the preventive strategy was sealing selectively only high-caries risk patients, and in Vantaa where all patients were routinely sealed. Risk group determination in Kemi was based on the presence of Streptococcus mutans in dental plaque.

Comparison of dental health in sealed and non-sealed first permanent molars: 7 years follow-up in practice-based dentistry.

Objectives: The use of digital dental records enables the retrospective analysis of the effectiveness of the fissure sealants applied in everyday dental practice. We tested the hypothesis that sealant treatment of first permanent molars results in a diminished need for restorative treatment in sealant treated teeth compared to their non-sealed counterpairs tested in a "practice-based research" (PBR) protocol.

Methods: Kaplan-Meier survival analysis was used to estimate the survival of first permanent molars caries-free, either sealed or non-sealed, for children attending two health centers in Finland (Kemi and Vantaa).

Computed online determination of life-long mean index values for carious, extracted, and/or filled permanent teeth.

Objective: The purpose of this study was to develop and test a data-mining system for the online determination of mean DS, M, and FS or DMFS values per subject at different ages from electronic patient records at two health centers to see if there are north-south differences in oral health in Finland.

Material And Methods: The mean index values were determined at two health centers using the codes of dental charts and progress notes of electronic dental records during the digital era of more than 10 years in a total of 153,619 subjects of all ages. Extracted teeth, as well as sound, carious, and restored tooth surfaces, were recorded from the dental charts.

A practice-based study of the sealant treatment effectiveness in Finns.

Objectives: The effectiveness of fissure sealing in preventing dental caries in a subject-specific fashion was studied in order to forge a link between the controlled trials and knowledge creation in clinical practice.

Methods: The subjects were divided retrospectively into three categories according to the sealant treatment status of their first permanent molars at the first examination after the eruption and the survival of first molars in each group were estimated using the Kaplan-Meier method.

Results: Sealing of all first molars in caries-prone subjects was an effective caries preventive method.