The effect of ultrasonic removal of various root-end filling materials

C. Pirani, F. Iacono, S. Chersoni, J. Sword, D. H. Pashley, Franklin Chi Meng Tay, Stephen Warwick Looney, M. G. Gandolfi, C. Prati

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Aim To compare residual root-end filling material in apical root-end cavities following their removal with ultrasonic retrotips. Methodology Thirty single-rooted teeth were filled with Thermafil and AH Plus sealer. Root-ends were resected at 90°, 3 mm from the apex. Root-end cavities were prepared with diamond burs and ultrasonic retrotips and filled with one of three filling materials: group I: Retro-TC (calcium silicate-based cement), group II: IRM (Dentsply, Germany), group III: Vitrebond (3M ESPE, USA). After 30 days of storage, ultrasonic retrotips were used to remove materials from the root-end cavities. The ultrasonic application time was fixed at 60 s. Polyether impressions and replicas of the root-ends were made. Root apices and replicas were examined by one operator under a scanning electron microscope. Remnants of residual materials were evaluated using a four-level scoring system; fractures, smear layer and exposed dentinal tubules were also examined. Results Forty per cent of the specimens filled with Retro-TC revealed complete removal of the material with exposure of dentinal tubules, whilst 60% contained residual cement. Twenty per cent of specimens filled with IRM were completely devoid of material, whereas 80% had retained material. Ten per cent of specimens filled with Vitrebond retained a moderate amount of material whilst 90% had substantial retention of the material. Statistically significant differences were found (P < 0.05) amongst the three groups of materials. Conclusions Retro-TC was successfully removed in 40% of cases using ultrasonics retrotips for 60 s, whereas IRM and Vitrebond specimens had evidence of retained material in 80% and 90% of all specimens respectively.

Original languageEnglish (US)
Pages (from-to)1015-1025
Number of pages11
JournalInternational Endodontic Journal
Volume42
Issue number11
DOIs
StatePublished - Nov 1 2009

Fingerprint

Ultrasonics
Silicate Cement
Smear Layer
Diamond
Germany
Tooth
Electrons
Vitrabond

Keywords

  • Endodontic retreatment
  • Portland cement
  • Root-end filling material
  • Ultrasound retro-tip

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Pirani, C., Iacono, F., Chersoni, S., Sword, J., Pashley, D. H., Tay, F. C. M., ... Prati, C. (2009). The effect of ultrasonic removal of various root-end filling materials. International Endodontic Journal, 42(11), 1015-1025. https://doi.org/10.1111/j.1365-2591.2009.01612.x

The effect of ultrasonic removal of various root-end filling materials. / Pirani, C.; Iacono, F.; Chersoni, S.; Sword, J.; Pashley, D. H.; Tay, Franklin Chi Meng; Looney, Stephen Warwick; Gandolfi, M. G.; Prati, C.

In: International Endodontic Journal, Vol. 42, No. 11, 01.11.2009, p. 1015-1025.

Research output: Contribution to journalArticle

Pirani, C, Iacono, F, Chersoni, S, Sword, J, Pashley, DH, Tay, FCM, Looney, SW, Gandolfi, MG & Prati, C 2009, 'The effect of ultrasonic removal of various root-end filling materials', International Endodontic Journal, vol. 42, no. 11, pp. 1015-1025. https://doi.org/10.1111/j.1365-2591.2009.01612.x
Pirani, C. ; Iacono, F. ; Chersoni, S. ; Sword, J. ; Pashley, D. H. ; Tay, Franklin Chi Meng ; Looney, Stephen Warwick ; Gandolfi, M. G. ; Prati, C. / The effect of ultrasonic removal of various root-end filling materials. In: International Endodontic Journal. 2009 ; Vol. 42, No. 11. pp. 1015-1025.
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abstract = "Aim To compare residual root-end filling material in apical root-end cavities following their removal with ultrasonic retrotips. Methodology Thirty single-rooted teeth were filled with Thermafil and AH Plus sealer. Root-ends were resected at 90°, 3 mm from the apex. Root-end cavities were prepared with diamond burs and ultrasonic retrotips and filled with one of three filling materials: group I: Retro-TC (calcium silicate-based cement), group II: IRM (Dentsply, Germany), group III: Vitrebond (3M ESPE, USA). After 30 days of storage, ultrasonic retrotips were used to remove materials from the root-end cavities. The ultrasonic application time was fixed at 60 s. Polyether impressions and replicas of the root-ends were made. Root apices and replicas were examined by one operator under a scanning electron microscope. Remnants of residual materials were evaluated using a four-level scoring system; fractures, smear layer and exposed dentinal tubules were also examined. Results Forty per cent of the specimens filled with Retro-TC revealed complete removal of the material with exposure of dentinal tubules, whilst 60{\%} contained residual cement. Twenty per cent of specimens filled with IRM were completely devoid of material, whereas 80{\%} had retained material. Ten per cent of specimens filled with Vitrebond retained a moderate amount of material whilst 90{\%} had substantial retention of the material. Statistically significant differences were found (P < 0.05) amongst the three groups of materials. Conclusions Retro-TC was successfully removed in 40{\%} of cases using ultrasonics retrotips for 60 s, whereas IRM and Vitrebond specimens had evidence of retained material in 80{\%} and 90{\%} of all specimens respectively.",
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AU - Pirani, C.

AU - Iacono, F.

AU - Chersoni, S.

AU - Sword, J.

AU - Pashley, D. H.

AU - Tay, Franklin Chi Meng

AU - Looney, Stephen Warwick

AU - Gandolfi, M. G.

AU - Prati, C.

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N2 - Aim To compare residual root-end filling material in apical root-end cavities following their removal with ultrasonic retrotips. Methodology Thirty single-rooted teeth were filled with Thermafil and AH Plus sealer. Root-ends were resected at 90°, 3 mm from the apex. Root-end cavities were prepared with diamond burs and ultrasonic retrotips and filled with one of three filling materials: group I: Retro-TC (calcium silicate-based cement), group II: IRM (Dentsply, Germany), group III: Vitrebond (3M ESPE, USA). After 30 days of storage, ultrasonic retrotips were used to remove materials from the root-end cavities. The ultrasonic application time was fixed at 60 s. Polyether impressions and replicas of the root-ends were made. Root apices and replicas were examined by one operator under a scanning electron microscope. Remnants of residual materials were evaluated using a four-level scoring system; fractures, smear layer and exposed dentinal tubules were also examined. Results Forty per cent of the specimens filled with Retro-TC revealed complete removal of the material with exposure of dentinal tubules, whilst 60% contained residual cement. Twenty per cent of specimens filled with IRM were completely devoid of material, whereas 80% had retained material. Ten per cent of specimens filled with Vitrebond retained a moderate amount of material whilst 90% had substantial retention of the material. Statistically significant differences were found (P < 0.05) amongst the three groups of materials. Conclusions Retro-TC was successfully removed in 40% of cases using ultrasonics retrotips for 60 s, whereas IRM and Vitrebond specimens had evidence of retained material in 80% and 90% of all specimens respectively.

AB - Aim To compare residual root-end filling material in apical root-end cavities following their removal with ultrasonic retrotips. Methodology Thirty single-rooted teeth were filled with Thermafil and AH Plus sealer. Root-ends were resected at 90°, 3 mm from the apex. Root-end cavities were prepared with diamond burs and ultrasonic retrotips and filled with one of three filling materials: group I: Retro-TC (calcium silicate-based cement), group II: IRM (Dentsply, Germany), group III: Vitrebond (3M ESPE, USA). After 30 days of storage, ultrasonic retrotips were used to remove materials from the root-end cavities. The ultrasonic application time was fixed at 60 s. Polyether impressions and replicas of the root-ends were made. Root apices and replicas were examined by one operator under a scanning electron microscope. Remnants of residual materials were evaluated using a four-level scoring system; fractures, smear layer and exposed dentinal tubules were also examined. Results Forty per cent of the specimens filled with Retro-TC revealed complete removal of the material with exposure of dentinal tubules, whilst 60% contained residual cement. Twenty per cent of specimens filled with IRM were completely devoid of material, whereas 80% had retained material. Ten per cent of specimens filled with Vitrebond retained a moderate amount of material whilst 90% had substantial retention of the material. Statistically significant differences were found (P < 0.05) amongst the three groups of materials. Conclusions Retro-TC was successfully removed in 40% of cases using ultrasonics retrotips for 60 s, whereas IRM and Vitrebond specimens had evidence of retained material in 80% and 90% of all specimens respectively.

KW - Endodontic retreatment

KW - Portland cement

KW - Root-end filling material

KW - Ultrasound retro-tip

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