Background:Impacted teeth is a common pathology in dentistry, account for about 30 \ufffd?40% of the youth with the age from 20 to 25 (according to the study of Mai Dinh Hung). Impacted teeth need to be operated. Especially, in autogenous tooth transplantation, impacted teeth have a role as donor teeth and must be intact. Therefore, we have to localize impacted teeth by tube shift technique prior operation. Objectives: To assess the results of tube shift technique when localizing impacted teeth. Subjects and method: This was a prospective study on 75 patients from 6 to 61 years old, who have X-ray taken in 90 areas to locate impacted teeth in Hanoi Odonto Stomatology Institute from November 2002 to September 2003. Observation 57 cases and compare the preliminary interpretation of the radiographs and the result post \ufffd?operated. Results: The sameness ratio between diagnosis in X-ray film and post \ufffd?operated is 82.4%. The Kappa index is 0.87 indicated that the results of tube shift technique is high accurate. Conclusion: The outcome of tube shift technique is very accurate in localizing buccolingual direction of impacted teeth. However, to have complete information about the impacted teeth, we should coordinate with other films.
Tooth ; Impacted/ therapy ; Methods ;

This article describes Viet Nam Ministry of Health’s (VMoH) activities to prepare for and respond to the threat Zika virus (ZIKV), including the adaptation of existing surveillance systems to encompass ZIKV surveillance.