A cytological analysis of the oral mucosa adjacent to orthodontic devices

Raul Magnoler Sampaio Mei; Antônio Adilson Soares de Lima; Jorge César Borges Leão Filho; Orlando Motohiro Tanaka; Odilon Guariza Filho; Elisa Souza Camargo

doi:10.4103/2278-9626.112308

European Journal of General Dentistry, Inhaltsverzeichnis

CC BY-NC-ND 4.0 · European Journal of General Dentistry 2013; 2(02): 119-123
DOI: 10.4103/2278-9626.112308

Original Article

A cytological analysis of the oral mucosa adjacent to orthodontic devices

Raul Magnoler Sampaio Mei

Graduate Dentistry Program, Orthodontics, Centro Universitário da Grande Dourados, Dourados, Brazil

,

Antônio Adilson Soares de Lima

¹Depatment for Stomatology, Universidade Federal do Paraná, Curitiba, Brazil

,

Jorge César Borges Leão Filho

²Pontifícia Universidade Católica do Paraná, Curitiba, School of Health and Biosciences, Dentistry Graduate Program - Orthodontics, Brazil

,

Orlando Motohiro Tanaka

²Pontifícia Universidade Católica do Paraná, Curitiba, School of Health and Biosciences, Dentistry Graduate Program - Orthodontics, Brazil

,

Odilon Guariza Filho

²Pontifícia Universidade Católica do Paraná, Curitiba, School of Health and Biosciences, Dentistry Graduate Program - Orthodontics, Brazil

,

Elisa Souza Camargo

²Pontifícia Universidade Católica do Paraná, Curitiba, School of Health and Biosciences, Dentistry Graduate Program - Orthodontics, Brazil

› Institutsangaben

Abstract

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Abstract

Objectives: The objective of this study, was to evaluate the cytometry and cytomorphology of oral mucosa epithelial cells adjacent to orthodontic accessories using liquid-based exfoliative cytology. Materials and Methods: We placed metallic brackets on the upper pre-molars with stainless steel wires and metal or elastic ties on 20 people of both sexes, with an average age of 22.7 years. We evaluated nucleus area (NA), cytoplasm area (CA), and NA/CA ratio before installation (T0, baseline), 30 days after installation (T1), and 30 days after the accessories were removed (T2). Results: We verified a reduction in NA and an increase in CA with both types of ties at T1 (P<0.05 vs. T0), with a tendency to return to baseline values at T2 (P<0.05 vs. T0). At T1 and T2 we observed a predominance of surface cells over subsurface cells. Conclusions: The orthodontic appliance causes adaptive cell changes characterized by an increased level of keratinization of the oral mucosa, with a tendency to return to the normal state after removal of the mechanical stimulus of the orthodontic devices.

Keywords

Bracket - exfoliative cytology - mucosa

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Referenzen

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