Document Detail

Preclinical alterations of oral epithelial cells in contact with orthodontic appliances.
MedLine Citation:
PMID:  22286817     Owner:  NLM     Status:  In-Data-Review    
Aim. This study evaluated the behavior of oral epithelial cells in contact with orthodontic appliances. Methods. Oral epithelial cells of clinically normal buccal mucosa were obtained by liquid-based exfoliative cytology from 22 orthodontic patients. The following regions were evaluated: a) oral mucosa exposed to friction from orthodontic brackets; b) oral mucosa exposed to friction from the tube on the orthodontic band, and c) oral mucosa not exposed to friction (control area). Nuclear (NA) and cytoplasmic (CA) areas and NA/CA ratio were assessed by an image analysis system. Cell morphology and cellularity were also analyzed by Papanicolaou technique. Results. The NA of the cells in contact with orthodontic brackets and bands were smaller than the control area. Cells in contact with the brackets showed the greatest reduction in CA in comparison with the cells subjected to friction from the tube, and the control group. Smears classified as type I predominated in all regions analyzed, although type II were predominant, together with superficial epithelial cells, mainly in the oral mucosa in contact with the band tube. Conclusion. Preclinical alterations in the epithelial cells of oral mucosa, caused by orthodontic appliances, are reduction in NA, increase in cell keratinization and inflammatory features, especially in the band tube area.
Elcy Pinto de Arruda; Paula Cristina Trevilatto; Elisa Souza Camargo; Iverson Ernani Cogo Woyceichoski; Maria Angela Naval Machado; Iran Vieira; Antonio Adilson Soares de Lima
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biomedical papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia     Volume:  155     ISSN:  1213-8118     ISO Abbreviation:  Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2012-01-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101140142     Medline TA:  Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub     Country:  Czech Republic    
Other Details:
Languages:  eng     Pagination:  299-303     Citation Subset:  IM    
Department of Stomatology, School of Dentistry, Universidade Federal do Parana-UFPR, Curitiba-PR, Brazil.
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