[The replacement of defects and prevention of dental arch deformities in complete destruction of the crowns in subjects of various ages]. / Zameshchenie defektov i profilaktika deformatsii zubnykh riadov pri polnom razrushenii koronok u lits razlichnogo vozrasta.

The authors necessitate careful handling of the dental roots and consider it necessary that indications for the use of pin constructions be widened; they suggest original modifications of such designs and analyze the results of treatment of 176 patients. Examinations of 2,664 adolescents have revealed various dentition defects in 23.2 +/- 1.5%, these defects leading to deformations. Orthodontic treatment and prostheses are necessary to prevent these deformations.

Return of epidemic A1 (H1N1) influenza virus.

Limited outbreaks of influenza were reported in the far east of the U.S.S.R. early in November, 1977, and a week or two later in cities in Siberia and the European parts of the U.S.S.R. The majority of influenza-virus isolates belonged to the H1N1 subtype of influenza-A virus, though strains of the current H3N2 subtype were also isolated. A moderate epidemic of H1N1 influenza spread throughout the country in the middle of December. Mainly children over 5 years and young adults were infected.