COMPARISON OF RESISTANCE IN PRECAST POST EVICTION UNIRADICULAR TEETH: AN IN VITRO STUDY
DOI:
https://doi.org/10.15332/us.v12i1.1116Keywords:
Tensile strength, Dentin, Dental cementumAbstract
Objective: To compare two cementing techniques in uniradicular teeth with root weakened walls.
Methods: An in vitro experimental study was done with sixty collected teeth which were divided into three groups at random (A, B and C). The conventional technique with resin cement was done in 20 teeth with narrow canals 20 other teeth with weakened root walls (groups A and B). The technique of root reinforcement and flowable resin cement was used in the remaining 20 teeth (group C) which had weakened root walls. The dislodging force in the three groups was tested using an universal testing machine. The Mann Whitney and one-way ANOVA tests were used with a p value < 0.05 as statistically significant.
Results: It was not found a statistically significant difference when comparing the dislodging force in the three groups (p = 0.064) but, it was found a difference when comparing traction forces (p = 0.005). In addition, it was observed that there was less adhesion between dentin - restorative interface materials in the three groups. The behavior exhibited between said post - cement poles showed higher adhesion with the resin cement.
Conclusion: Group C showed greater resistance to the tensile force perhaps because the resistance of the tooth structure was increased when the root canal was reinforced with composite resine. The conventional technique was effective in the case of restoring teeth with narrow root canals.
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References
Forni DP. Resistencia a las fuerzas de tracción de cemento de resina cementos de vidrio ionómero modificado con resina. Estudio In vitro. Universidad de Talca; 2005. URL disponible en: http://dspace.utalca.cl/bitstream/1950/2130/1/forni_fuentes.pdf
Mahn G. Evaluación morfológica de la interacción del adhesivo Adper Prompt-L-Pop con la dentina del conducto radicular [Trabajo de Grado]. Santiago de Chile: Universidad de Chile; 2005.
Vallejo M, Maya C, Erazo N. Resistencia a la fractura de dientes con debilitamiento radicular. CES Odontol 2011; 24: 59 – 69.
Chávez-Valdivia ND. Resistencia a la fractura de piezas dentales restauradas con anclajes de fibra carbono y colados. Estudio In vitro [Trabajo de Grado]. Lima: Universidad Nacional Mayor de San Marcos; 2002.
Fakiha Z, Al-Aujan A, Al-Shamrani S. Retention of cast posts cemented with zinc phosphate cement using different cementing techniques. J Prosthodont 2001; 10: 37 – 41.
Ojeda F, Puente F, Goldaracena MP, Montero VM. Estudio In vitro de resistencia a la fractura de dientes tratados con endodoncia y restaurados con dos sistemas de postes. ADM 2011; LXVIII: 290 – 297.
Palomino BC. Evaluación de la resistencia a las fuerzas de tracción de coronas completas cementadas con cemento de ionómero vítreo, ionómero vítreo reforzado con resina y cemento resinoso dual sobre preparaciones dentarias no pulidas [Trabajo de Grado]. Lima: Universidad Peruana Cayetano Heredia; 2006.
Mallat E. Ionómeros de Vidrio (I) Geodental [en línea] 2002. [Fecha de acceso: febrero de 2013]. URL disponible en: http://clinicamallat.com/05_formacion/art_cien/miscelanea/mi02.pdf
D’Arcangelo C, D’Amario MD, Vadini M, Zazzeroni S, De Angelius FD, Caputi S. An evaluation of luting agent application technique effect on fibre post retention. J Dent 2008; 36: 235 - 240.
Garita A, Rodríguez C. Comparación In vitro de la fuerza de retención en endopostes de fibra de vidrio prefabricados entre los cementos de resina autograbable, cemento de resina convecional y cemento de ionómero de vidrio modificado con resina. Revista IDental 2008, 1: 25 - 35.
García A. Estudio In vitro comparativo de la fuerza de adhesión de un ionómero y dos resinas utilizadas para adherir brackets [Trabajo de Grado]. Lima: Universidad Nacional San Marcos; 2002.
Saupe WA, Gluskin AH, Radke RA Jr. A comparative study of fracture resistance between morphologic dowel and cores and resin-reinforced Dowel System in the intraradicular restoration of structurally compromised root. Quintessence Int 1996; 27: 483 - 491.
Lawley R, Chindler W, Walker Kolodrubetz D. Evaluation of ultrasonically placed MTA and fracture resistance with intracanal composite resin in a model of apexification. J Endod 2004; 30: 167 - 172.
Mazzitelli C. Evaluación de la unión entre cementos resinosos-adhesivos y la dentina [Trabajo de Grado]. Granada: Universidad de Granada; 2008.
Rodríguez JB. Adhesión de selladores endodónticos a centina radicular [Trabajo de Grado]. Granada: Universidad de Granada; 2007.
Jara P, Martínez A, Correa G, Catalán A. Estudio In vitro de la resistencia a la tracción de postes de fibra de vidrio cementados con cuatro agentes cementantes. Avances en Odontoestomatología 2010; 26: 255 – 262.
Medina D, Kaplan A, Avalos M. Mecanismos de falla en postes de fibra de vidrio. CONAMET-SAM [en línea] 2008. [Fecha de acceso: marzo de 2013]. URL disponible en: http://www.materiales-sam.org.ar/sitio/biblioteca/CONAMET-SAM2008/pdfs/g6.pdf
