Root surfaces after ultrasonic instrumentation with a polishing fluid.
Quintessence Int
; 38(8): e490-6, 2007 Sep.
Article
en En
| MEDLINE
| ID: mdl-17823673
OBJECTIVE: The recently introduced Vector system is recommended to be used in conjunction with a polishing fluid containing hydroxylapatite granules (<10 Microm). The aim of the present study was to assess morphologic alterations of the root surface after ultrasonic treatment with the polishing fluid. METHOD AND MATERIALS: Cementum of 30 freshly extracted human teeth was removed to a level of 4 mm below the cementoenamel junction. Surfaces were root-planed and conditioned with citric acid to remove the smear layer. Teeth were divided into 5 groups, with group 1 as the untreated control. Group 2 was solely treated with the ultrasonic system. In group 3, the ultrasonic system was used in conjunction with the polishing fluid. Group 4 was treated with a medium-hard toothbrush and the polishing fluid. Group 5 was treated only with the toothbrush. Specimens were evaluated by both light and scanning electron microscopy. RESULTS: Dentinal tubules were not covered by a smear layer in the control group, whereas in group 2, a smear layer could be observed in some specimens. In group 3 dentinal tubules were always covered by a layer consisting of granules of about 2 Microm. In group 4 all samples showed a layer containing granules of about 5 Microm, and in group 5 a thin smear layer could be observed. CONCLUSION: The use of a polishing fluid containing hydroxylapatite granules during treatment of the root surface results in a granular layer covering the dentinal tubules. This layer may reduce hypersensitivity after ultrasonic subgingival scaling.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Raíz del Diente
/
Terapia por Ultrasonido
/
Dentífricos
/
Dentina
Tipo de estudio:
Clinical_trials
Límite:
Humans
Idioma:
En
Revista:
Quintessence Int
Año:
2007
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Alemania