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Brazilian Journal of Oral Sciences

versão On-line ISSN 1677-3225

Braz. J. Oral Sci. vol.9 no.2 Piracicaba Abr./Jun. 2010




Mechanical and acid root treatment on periodontally affected human teeth - a scanning electronic microscopy



Priscilla Barbosa Ferreira SoaresI; Carolina Guimarães CastroII; Carolina Assaf BrancoIII; Denildo MagalhãesI; Alfredo Júlio Fernandes NetoIII; Carlos José SoaresII

IDepartment of Periodontology and Implantology, Dental School, Federal University of Uberlândia, Brazil
IIDepartment of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Brazil
IIIDepartment of Prosthodontics and Dental Materials, Dental School, Federal University of Uberlândia, Brazil





AIM: To evaluate the root topography of human teeth affected by periodontitis, after different root surface treatments.
Forty-two periodontally affected single-rooted human teeth were selected and randomly divided into 7 groups (n=6): Cont- control group, which received no treatment; Sca- root surface scaling and root planning with curettes; ScaPh- Sca followed by 37% phosphoric acid gel etching for 15 s; ScaEdta- Sca followed by 24% EDTA gel pH 7 for 1 min; ScaCi- Sca followed by 30% citric acid pH 1.6 for 5 min; ScaTe- Sca followed by – mixture obtained by 500 mg tetracycline capsule dissolved in saline solution for 3 min; ScaTeg- Sca followed by 0.2 g/mL tetracycline gel pH 1.8 for 1 min. The specimens were analyzed by scanning electronic microscopy to verify the presence of calculus, demineralization level and residues of the product.
Calculus deposits were found in all control specimens. ScaEdta, ScaCi and ScaTeg removed completely calculus deposits and resulted in adequate demineralization without smear layer and smear plug on root surface. ScaTe produced great tetracycline residues with several demineralization areas on root dentin surface.
ScaEdta, ScaCi and ScaTeg produced clean root surfaces associated with regular dentin demineralization.

Keywords: scanning electron microscopy; periodontitis; conditioning; dental scaling; root planning and demineralization



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Correspondence to:
Carlos José Soares
Faculdade de Odontologia – Universidade
Federal de Uberlândia
Área de Dentística e Materiais Odontológicos
Av. Pará, n° 1720, Campus Umuarama,
Bloco 2B, Sala 2B-24,
CEP: 38405-902 - Uberlândia, MG, Brasil
Phone: 55 - 34 32182255 / Fax: 55 - 34 32182279

Received for publication: March 26, 2010
Accepted: June 16, 2010