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Incidence and distribution of deciduous molar ankylosis, a longitudinal study
 

Type:  Articles

Pubblication date:  /1/2011

Authors:  A. Silvestrini Biavati*, A. Signori**, A. Castaldo***, G. Matarese****, M. Migliorati*

Language:  English

Institution:  *Department of Orthodontics, University of Genoa, Italy **Department of Health Sciences, Section of Biostatistics, University of Genoa, Italy *** Department of Orthodontics, University of Trieste, Italy **** Department of Orthodontics, University of Messina, Italy

Publication:  European Journal of Paediatic Dentistry

Publisher:  Ariesdue Srl

Keywords:  Tooth ankylosis; Deciduous molars.

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Title:  Incidence and distribution of deciduous molar ankylosis, a longitudinal study

Abstract:  Aim To study incidence and distribution of deciduous molar ankylosis. Materials and methods Study design: longitudinal retrospective study. A total of 512 consecutive subjects (aged 5 to 15 years) were examined at the Orthodontics and Paediatric Dentistry Department of the Genoa University School of Dentistry; for each subject an ortopantomography x-ray was taken. Results Thirty-four children were affected by deciduous molars ankylosis (6.6%). A statistically significant difference was revealed between the distributions: the lower deciduous molars were ankylosed more frequently than the upper ones (P<0.001); the second deciduous molars were ankylosed more frequently than the first molars (P<0.001). No statistical significance was found between sex and number of infraoccluded teeth (P=0.74). Conclusion This study found an incidence of deciduous molar ankylosis of about 6.6%; the lower deciduous molars and second deciduous molars were ankylosed more frequently (P<0.001).

 
 
 
 
 
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