Bamboo as bioresource in Ethiopia: management strategy to improve seedling performance (Oxytenanthera abyssinica).

Seedling emergence and subsequent survival and growth are vital for natural forest restoration or plantation establishment by means of seeds. Such information is lacking for the African bamboo species. Two experiments were carried out in a greenhouse to evaluate the influence of seed orientation and sowing depth of the lowland bamboo Oxytenanthera abyssinica on seedling emergence, survival and growth.

Evaluation of a simple modified radiographic alignment system for routine use.

Radiographic frames used for longitudinal studies may be in part unreadable for measuring crestal bone change. Sites may not be present on the film, or the measurement reliability may be compromised because of dissimilar geometry. Several techniques used to address this problem are expensive, time-consuming, and required great skill.

Suppression of subgingival Actinobacillus actinomycetemcomitans in localized juvenile periodontitis by systemic tetracycline.

The current study assessed the clinical and microbiological effects of systemic antimicrobial therapy alone in Actinobacillus actinomycetemcomitans-infected adolescents with periodontal disease. The study involved 6 localized juvenile periodontitis patients 13-18 years of age, who harbored high numbers of A. actinomycetemcomitans in subgingival plaque samples.

Prevention of transmission of resistant bacteria between periodontal sites during subgingival application of antibiotics.

This study was designed to investigate whether antibiotic resistant micro-organisms are able to contaminate and survive on syringe tips used for subgingival deposition of antibiotics, and to test simple and effective means of disinfecting the syringe tip between applications. In the first part of the study, syringe tips used for application of Minocycline subgingival formula in 20 adult periodontitis patients were cultured for bacteria resistant to this drug before and after disinfecting them with ethanol. The results showed that 80% of the unwashed syringes were culture positive for minocycline resistant bacteria, whereas only 1 ethanol washed syringe tip was contaminated.