[Histological and ultrastructural variations after radiofrequency for soft palate in porcines].
Shanghai Kou Qiang Yi Xue
; 13(6): 534-8, 2004 Dec.
Article
en Zh
| MEDLINE
| ID: mdl-15619700
ABSTRACT
PURPOSE:
To investigate the histological and ultrastructural variations after radiofrequency volumetric reduction of the soft palate in an animal model.METHODS:
Thirteen porcines were used to evaluate the tissue response to radiofrequency for various time periods. They were divided into two groups. Group 1 was exposed to radiofrequency in the midline of the soft palate with a constant energy of 2.4 KJ. Group 2 served as a control group. The animals in group 1 were sacrificed after 1 hour, 24 hours, 48 hours, 72 hours, 1 week, 2 weeks, 3 weeks, 4 weeks, 6 weeks and 9 weeks, respectively, and after 72 hours, 2 weeks and 4 weeks for the animals in group 2. Then the soft palates from both groups were examined for histological and ultrastructural variations.RESULTS:
Interstitial edema, hemorrhage and infiltration with inflammatory cells were observed in the early acute stage after radiofrequency, and then the neovascularization of the forming scar was observed. In the end, the injured tissue was replaced by collagenous fibers. Intact vessels and nerves were observed around the lesions.CONCLUSIONS:
After radiofrequency, lesion tissue is replaced by collagenous fibers, and it is focused on the lesion site. These findings may help provide a basis for technological suggestion in regard to clinical treatment.
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Bases de datos:
MEDLINE
Asunto principal:
Paladar Blando
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
Zh
Revista:
Shanghai Kou Qiang Yi Xue
Asunto de la revista:
ODONTOLOGIA
Año:
2004
Tipo del documento:
Article
País de afiliación:
China