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Root canal therapy is usually performed in single or multiple-visit treatment. The choice of single or multiple visit depend on dentist and patient available time. In general dentistry, multiple-visit is widely chosen by dentist whereas endodontic speciality recommend single-visit. In this study we analyzed 120 root canal therapy performed by students, to determine the number of visits needed to achieve treatment from endodontic-cavity-access to root canal filling and its possible, influence in the successful rate. Results showed that globally, 60% of treatments were performed in multiple-visit. Results showed also hat 89.3% of anteriors teeth were performed in single-visit but there is a higher rate of fail: 31.78%. Nevertheless, these results do not condemn endodontic single visit therapy.

During a study of folliculogenesis and progesterone profile in superovulated Gobra cows, the authors have superovulated 2 groups of 3 cows each, the first one with 32 mg of FSH during 4 days and the second with 2500 UI of PMSG. The reference heats observed with all six cows were obtained with Norgestomet implants. Superovulation responses were better with PMSG. The follicle dynamics observed with echography was stronger with PMSG compared to FSH. The progesterone profile had a variation inverse to follicle growth.

An epidemiological survey on 2.067 children from 7 to 12 years old in average carried in three urban, suburban and rural school environments, has shown that dental caries prevalence is not yet alarming in the district of Dakar, and that the caries index remain more high in the urban environment than in the rural environment. However face to the urbanization and the industrialization of this region, the modification of the alimentary habits appear to be facilitating factors of the raising of the dental caries prevalence in the coming years if nothing is done. It's why preventive measures have to be taken based over all on dental health education and dental health information in organized structures like school.