Objective: To examine international rates of preterm birth and potential associations with stillbirths and neonatal deaths at late preterm and term gestation. Design  Ecological study. Setting: Canada, USA and 26 countries in Europe. Population  All deliveries in 2004. Methods  Information on preterm birth (<37, 32-36, 28-31 and 24-27 weeks of gestation) and perinatal deaths was obtained for 28 countries. Data sources included files and publications from Statistics Canada, the EURO-PERISTAT project and the National Center for Health Statistics.

To identify the risk factors for failed instrumental vaginal delivery, and to compare maternal and neonatal morbidity associated with failed individual and sequential instruments used.
A retrospective case-control study.

Periodontal disease and diabetes are two common chronic diseases affecting humans. The aim of this study was to assess the effect of oral hygiene instructions on periodontal disease among type 2 male diabetic Saudi subjects. Sixty subjects completed the study and were divided into three groups of 20: healthy (non-diabetic) with periodontal disease, type 2 diabetic with early or moderate periodontal disease, and type 2 diabetic with advanced periodontitis. The age ranged from 24-64 (42 +/- 13.60) years.

Introduction. Mineral trioxide aggregate (MTA) was initially developed as a perforation repair material. Subsequently, its uses expanded to include root-end filling material, an apical barrier in apexification, and a capping material in vital pulp therapy. Recently, different accelerants have been developed that provide faster setting time and greater compressive strength when combining certain additives with the powder.