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Estudo comparativo da capacidade de selamento apical endodôntico após utilização de diferentes medicamentos intracanais
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Abstract(s)
Objetivo: Analisar e comparar o efeito do hidróxido de cálcio (HC) e da pasta Ledermix® como medicação intracanal (MI), na capacidade de selamento apical do cimento de resina AH Plus.
Materiais e métodos: Uma amostra de 40 dentes monoradiculares com canal radicular reto, sem lesões cariosas nem outras patologias preexistentes e sem tratamento endodôntico prévio foram divididos em 3 grupos experimentais de 10 espécimenes cada um (n=10).
Amostra foi estandardizada a 14 mm desde o ápex radicular. Foram instrumentados com o sistema ProTaper Gold™ (S1 a F3) e obturados provisoriamente conforme o grupo experimental a que pertencem: G1 - Pasta Ledermix® (Esteve Pharmaceuticals, Berlin, Germany) (n=10), G2 – HC em pó (Dentaflux, Madrid, Espanha) (n=10), G3 - Sem MI, (n=10). Os restantes espécimenes (n=10) foram distribuídos em dois grupos de controle
positivo e negativo (GC+ e GC-). A MI foi removida após 28 dias para o grupo G1, e após 14 dias para o grupo G2 através de irrigação ultrassónica passiva. Todos os grupos de estudo exceto o GC+ foram obturados com o cimento de resina AH Plus® (Dentsply DeTrey, Konstanz, Germany) pela técnica do cone único.
As raízes depois de ser preparadas foram submetidas a técnica de filtração apical por corante de azul de metileno 2%. Posteriormente foram realizadas secções horizontais e observadas ao microscópio para identificar o nível de infiltração do corrente.
Os resultados foram compilados em tabela Excel e estatisticamente analisadas no programa SPSS.
Resultados: Todos os grupos de estudo tiveram infiltração; A média mais elevada de infiltração foi no grupo G1 (Ledermix®) com 3.56mm comparado aos grupos G2 (HC) e G3 (sem MI) de 2.75mm e 2.17mm respetivamente; apesar destes resultados, não diferenças significativas entre os grupos G1, G2 e G3 foram observadas (p>0.05).
Conclusão: Todos os grupos de estudo tiveram infiltração; Os MI testados não afetam a capacidade de selamento, não havendo diferencias significativas entre eles.
Objective: To analyze and compare the effect of calcium hydroxide (CH) and Ledermix® paste as intracanal medication (IM) on the apical sealing capacity of AH Plus resin cement. Materials and methods: A sample of 40 monoradicular teeth with a straight root canal, no carious lesions or other pre-existing pathologies and no previous endodontic treatment were divided into 3 experimental groups of 10 specimens each (n=10). The specimens were standardized to 14 mm from the root apex. They were instrumented with the ProTaper Gold™ system (S1 to F3) and provisionally filled according to the experimental group to which they belonged: G1 - Ledermix® (Esteve Pharmaceuticals, Berlin, Germany) paste (n=10), G2 - Powder CH (Dentaflux, Madrid, Spain) (n=10), G3 - No IM, (n=10). The remaining specimens (n=10) were divided into positive and negative control groups (GC+ and GC-). The IM was removed after 28 days for group G1, and after 14 days for group G2 using passive ultrasonic irrigation. All study groups except GC+ were filled with AH Plus® (Dentsply DeTrey, Konstanz, Germany) using the single cone technique. After preparation, the roots were subjected to the apical filtration technique using 2% methylene blue dye. Horizontal sections were then taken and observed under a microscope to identify the level of current infiltration. The results have been compiled in an Excel table and statistically analyzed in the SPSS program. Results: All study groups had infiltration; the highest average infiltration was in group G1 (Ledermix®) with 3.56mm compared to groups G2 (CH) and G3 (without IM) of 2.75mm and 2.17mm respectively; despite these results, no significant differences between groups G1, G2 and G3 were observed (p>0.05). Conclusion: All study groups had infiltration; the MI tested did not affect the apical sealing capacity as they were no significant differences between them.
Objective: To analyze and compare the effect of calcium hydroxide (CH) and Ledermix® paste as intracanal medication (IM) on the apical sealing capacity of AH Plus resin cement. Materials and methods: A sample of 40 monoradicular teeth with a straight root canal, no carious lesions or other pre-existing pathologies and no previous endodontic treatment were divided into 3 experimental groups of 10 specimens each (n=10). The specimens were standardized to 14 mm from the root apex. They were instrumented with the ProTaper Gold™ system (S1 to F3) and provisionally filled according to the experimental group to which they belonged: G1 - Ledermix® (Esteve Pharmaceuticals, Berlin, Germany) paste (n=10), G2 - Powder CH (Dentaflux, Madrid, Spain) (n=10), G3 - No IM, (n=10). The remaining specimens (n=10) were divided into positive and negative control groups (GC+ and GC-). The IM was removed after 28 days for group G1, and after 14 days for group G2 using passive ultrasonic irrigation. All study groups except GC+ were filled with AH Plus® (Dentsply DeTrey, Konstanz, Germany) using the single cone technique. After preparation, the roots were subjected to the apical filtration technique using 2% methylene blue dye. Horizontal sections were then taken and observed under a microscope to identify the level of current infiltration. The results have been compiled in an Excel table and statistically analyzed in the SPSS program. Results: All study groups had infiltration; the highest average infiltration was in group G1 (Ledermix®) with 3.56mm compared to groups G2 (CH) and G3 (without IM) of 2.75mm and 2.17mm respectively; despite these results, no significant differences between groups G1, G2 and G3 were observed (p>0.05). Conclusion: All study groups had infiltration; the MI tested did not affect the apical sealing capacity as they were no significant differences between them.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Cimento de resina Hidróxido de cálcio Infiltração apical Ledermix®