Author/Authors :
Poureslami، Hamidreza نويسنده Faculty of Dentistry,Department of Pediatric Dentistry,Kerman University of Medical Sciences,Kerman,Iran , , Asl Aminabadi، Naser نويسنده Faculty of Dentistry,Department of Paediatric Dentistry,
Department of Paediatric Dentistry,Tabriz University of Medical Science,Tabriz,Iran , , Sighari Deljavan، Alireza نويسنده General Dentist, Faculty of Dentistry, Tabriz University of Medical Science, Tabriz, Iran , , Erfanparast، Leila نويسنده Faculty of Dentistry,Department of Paediatric Dentistry,Tabriz University of Medical Science,Tabriz,Iran , , Sohrabi، Azin نويسنده Faculty of Dentistry,Department of Paediatric Dentistry,Tabriz University of Medical Science,Tabriz,Iran , , Jamali، Zahra نويسنده Faculty of Dentistry,Department of Oral Science,Tabriz University of Medical Science,Tabriz,Iran , , Ghertasi Oskouei، Sina نويسنده Faculty of Dentistry,Tabriz University of Medical Science,Tabriz,Iran , , Hazem، Kameliya نويسنده Faculty of Medical Science,Tabriz University of Medical Science,Tabriz,Iran , , Shirazi، Sajjad نويسنده Faculty of Dentistry,Research Committee dentistry,Tabriz University of Medical Science,Tabriz,Iran ,
Abstract :
Background and aims. Predicting the teeth eruption time is a valuable tool in pediatric dentistry since it can affects scheduling dental and orthodontic treatments. This study investigated the relationship between the eruption time of first primary and permanent teeth and the variation in the eruption time considering socioeconomic status (SES) in a 9 year population based cohort study.Materials and methods. 307 subjects were examined at bimonthly intervals during the first and second years of life and then at six month intervals until the eruption of first permanent tooth. Eruption times of primary and permanent tooth were recorded for each child. A modified form of Kuppuswamy’s scale was used to assess the SES.Results. Among 267 subjects completed all follow ups, the eruption time for first primary and permanent teeth indicated a direct strong correlation in that one month delayed or early eruption of firstprimary tooth resulted in 4.21 months delayed or early eruption of first appearing permanent tooth (r = 0.91, n = 267, P <0.001). No significant correlation was observed between the eruption time of first primary and first permanent teeth and SES (P = 0.67, P = 0.75, respectively).Conclusion. The eruption timing for the first primary tooth had a correlation with the first permanent tooth eruption tim ing, while SES did not have any influence on eruption times.
