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Subcutaneous connective tissue response to primary root canal filling materials
Queiroz, Alexandra Mussolino de; Assed, Sada; Consolaro, Alberto; Nelson-Filho, Paulo; Leonardo, Mario Roberto; Silva, Raquel Assed Bezerra; Silva, Lea Assed Bezerra.
Affiliation
  • Queiroz, Alexandra Mussolino de; University of São Paulo. Ribeirão Preto Dental School. Department of Pediatric Clinics, Preventive and Community Dentistry. Ribeirão Preto. BR
  • Assed, Sada; University of São Paulo. Ribeirão Preto Dental School. Department of Pediatric Clinics, Preventive and Community Dentistry. Ribeirão Preto. BR
  • Consolaro, Alberto; University of São Paulo. Ribeirão Preto Dental School. Department of Pediatric Clinics, Preventive and Community Dentistry. Ribeirão Preto. BR
  • Nelson-Filho, Paulo; University of São Paulo. Ribeirão Preto Dental School. Department of Pediatric Clinics, Preventive and Community Dentistry. Ribeirão Preto. BR
  • Leonardo, Mario Roberto; University of São Paulo. Ribeirão Preto Dental School. Department of Pediatric Clinics, Preventive and Community Dentistry. Ribeirão Preto. BR
  • Silva, Raquel Assed Bezerra; University of São Paulo. Ribeirão Preto Dental School. Department of Pediatric Clinics, Preventive and Community Dentistry. Ribeirão Preto. BR
  • Silva, Lea Assed Bezerra; University of São Paulo. Ribeirão Preto Dental School. Department of Pediatric Clinics, Preventive and Community Dentistry. Ribeirão Preto. BR
Braz. dent. j ; Braz. dent. j;22(3): 203-211, 2011. ilus, tab
Article in En | LILACS | ID: lil-595650
Responsible library: BR1.1
ABSTRACT
This study evaluated the response of the subcutaneous connective tissue of BALB/c mice to root filling materials indicated for primary teeth zinc oxide/eugenol cement (ZOE), Calen paste thickened with zinc oxide (Calen/ZO) and Sealapex sealer. The mice (n=102) received polyethylene tube implants with the materials, thereby forming 11 groups, as follows I, II, III Calen/ZO for 7, 21 and 63 days, respectively; IV, V, VI Sealapex for 7, 21 and 63 days, respectively; VII, VIII, IX ZOE for 7, 21 and 63 days, respectively; X and XI empty tube for 7 and 21 days, respectively. The biopsied tissues were submitted to histological analysis (descriptive analysis and semi-quantitative analysis using a scoring system for collagen fiber formation, tissue thickness and inflammatory infiltrate). A quantitative analysis was performed by measuring the area and thickness of the granulomatous reactionary tissue (GRT). Data were analyzed by Kruskal-Wallis, ANOVA and Tukey's post-hoc tests (?=0.05). There was no significant difference (p>0.05) among the materials with respect to collagen fiber formation or GRT thickness. However, Calen/ZO produced the least severe inflammatory infiltrate (p<0.05). The area of the GRT was significantly smaller (p<0.05) for Calen/ZO and Sealapex. In conclusion, Calen/ZO presented the best tissue reaction, followed by Sealapex and ZOE.
RESUMO
Neste estudo avaliou-se a resposta do tecido conjuntivo subcutâneo de camundongos BALB/c a materiais obturadores de canal radicular de dentes decíduos óxido de zinco/eugenol (OZE), pasta Calen® espessada com óxido de zinco (Calen/OZ) e cimento Sealapex®. Os camundongos (n=102) receberam implantes de tubos de polietileno??? e foram divididos em grupos I, II, III - Calen/OZ (7, 21 e 63 dias, respectivamente); IV, V, VI - Sealapex (7, 21 e 63 dias, respectivamente); VII, VIII, IX - OZE (7, 21 e 63 dias, respectivamente); X, XI - tubo vazio (7 e 21 dias, respectivamente). Os tecidos foram submetidos ao processamento e análise histopatológica descritiva e por meio de escores do fibrosamento, espessura tecidual e infiltrado inflamatório. Para a análise quantitativa mensurou-se a área e a espessura do tecido granulomatoso reacional (TGR). Os resultados foram analisados pelos testes de Kruskal-Wallis, ANOVA e pós-teste de Tukey (?=0,05). Não houve diferença significante (p>0,05) entre os materiais, com relação ao fibrosamento e à espessura do TGR. Contudo, Calen/OZ apresentou infiltrado inflamatório de menor intensidade (p<0,05). A área do TGR foi menor (p<0,05) para Calen/OZ e Sealapex. Pôde-se concluir que Calen/OZ foi o material que apresentou a melhor compatibilidade tecidual, seguido pelos cimentos Sealapex e OZE.
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Full text: 1 Collection: 01-internacional Database: LILACS Main subject: Root Canal Filling Materials / Subcutaneous Tissue Limits: Animals Language: En Journal: Braz. dent. j Journal subject: ODONTOLOGIA Year: 2011 Document type: Article Affiliation country: Brazil Country of publication: Brazil

Full text: 1 Collection: 01-internacional Database: LILACS Main subject: Root Canal Filling Materials / Subcutaneous Tissue Limits: Animals Language: En Journal: Braz. dent. j Journal subject: ODONTOLOGIA Year: 2011 Document type: Article Affiliation country: Brazil Country of publication: Brazil