The use of ultrasound for removal of cast posts with different types of retention

Authors

  • Marcia Maciel Menezes Unesp
  • Alberto Siqueira Silva Unesp
  • Renato Miotto Palo Unesp
  • Aletéia Massula Fernandes Unesp
  • Marcia Carneiro Valera Unesp

Keywords:

Post and core technique, Endodontics, ultrasound

Abstract

Purpose: The objective of this study was to evaluate the use of ultrasound for removal of cast posts (CP) with different characteristics. Methods: Thirty uniradicular human teeth were endodontically treated and divided into three groups: G1 - conventional post (no additional mechanical retention); G2 - post with longitudinal groove; and G3 - post with transversal grooves. The posts were cemented inside the root canal using zinc phosphate cement, and the specimens were stored in room temperature for 24 h. The procedures for post removal included the use of ultrasonification (ultrasound equipment Multisonic S) and manual pushing with haemostatic tweezers. The period of time necessary for post removal was recorded, and data were analyzed by ANOVA and Tukey tests (5% level of significance). Results: Time for post removal was statistically different between groups G1 (3.7±1.5 min) and G2 (1.4±0.5 min) (P<0.001) and between G1 and G3 (2.3±1.2 min) (P=0.04). No difference was found between G2 and G3 (P=0.207). Conclusion: It was concluded that conventional cast posts were more difficult to remove in comparison with posts with additional mechanical retention. Key words: Post and core technique; Endodontics; ultrasound

Author Biographies

Marcia Maciel Menezes, Unesp

Doutora pela Faculdade de Odontologia de São José dos Campos - Unesp.

Alberto Siqueira Silva, Unesp

Professor Doutor da Disciplina de Endodontia do Departamento de Odontologia Restauradora da Faculdade de Odontologia de São José dos Campos - Unesp.

Renato Miotto Palo, Unesp

Mestre pela Faculdade de Odontologia de São José dos Campos - Unesp.

Aletéia Massula Fernandes, Unesp

Especialista em Endodontia pela Unesp- SJC. Mestranda em Endodontia pela Unesp-SJC.

Marcia Carneiro Valera, Unesp

Professora Adjunta da Disciplina de Endodontia do Departamento de Odontologia Restauradora da Faculdade de Odontologia de São José dos Campos - Unesp.

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Published

2008-10-14

Issue

Vol. 24 No. 1 (2009)

Section

Original Article

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