Microleakage of softened temporary restorations as determined by microorganism penetration

Keller, David L.; Peters, Donald D.; Setterstrom, Jean; Bernier, William E.

doi:10.1016/s0099-2399(81)80040-4

Cited by 31 publications

(14 citation statements)

References 12 publications

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“…There was no significant difference in sealing ability between the two materials of each type. These findings are in agreement with some of the reports published earlier (Bramante et al 1977, Blaney et al 1981, Keller et al 1981. They do not support reports claiming the superiority of Cavit as a temporary filling material (Marosky et al 1977, Tamse et al 1982, Chohayeb & Bassiouny 1985.…”

Section: Discussionsupporting

confidence: 76%

“…Parris & Kapsimalis (1960), Tamse et al (1982) and Chohayeb & Bassiouny (1985) used dyes as tracers, while Marosky et al (1977) and Bramante et al (1977) utilized radionuclides in autoradiography. Other investigators used bacterial penetration in evaluating the seal of temporary fillings (Parris et al 1964, Krakow et al 1977, Blaney et al 1981, Keller et al 1981. Marginal adaptation of temporary fillings was also studied, with the aid of scanning electron microscopy, in an attempt to provide a measurable indicator for sealing ability (Webber et al 1978).…”

Section: Introductionmentioning

confidence: 99%

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Comparative sealing ability of temporary filling materials evaluated by leakage of radiosodium

et al. 1986

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Summary. The sealing ability of four temporary filling materials was evaluated in vitro, by studying leakage of radiosodium from the pulp chambers of teeth into an external medium. Zinc oxide‐eugenol based materials (IRM, ZOE) sealed better than calcium‐sulphate based materials (Cavidentin, Cavit‐G). Statistically significant differences were established between the sealing ability of the two types of materials during most of the experimental period, but no differences were established between the sealing ability of the two materials of the same type.

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Section: Discussionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Comparative sealing ability of temporary filling materials evaluated by leakage of radiosodium

et al. 1986

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“…In this study, those mixtures made using the manufacturer's recommendations either in manual mixes or in the marketed IRM CAPS were found to permit significant microleakage measurements both before and after thermal stress. Previous studies using bacteria, dye, or radioisotope have also reported that IRM or other zinc oxide and eugenol products did not provide good seals (6,8,9,11,13). However, when mixtures of IRM were made using P/L of 5 or less, excellent seals were provided in this study.…”

Section: Discussioncontrasting

confidence: 55%

“…IRM is recommended as a temporary restorative material following endodontic procedures (4). The seahng abihty of IRM to restore endodontic access preparations has been evaluated in vitro using dyes (5), isotopes (6,7) and bacteria (8,9), with varied results.…”

mentioning

confidence: 99%

Microleakage of IRM® used to restore endodontic access preparations

Anderson

Powell

Pashley

1990

Dental Traumatology

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The effect on microleakage of varying the powder-to-liquid ratio (P/L) of IRM used to restore endodontic access preparations was evaluated. Crowns of noncarious, nonrestored extracted human teeth were used in this study. Microleakage was measured using a fluid filtration technique prior to access preparation to obtain control measurements. After access preparation, IRM restorations were placed using P/L of 2, 3, 4, 5, and 6 g/ml, using the manufacturer's recommended dispensing scoop and dropper, and using 2 P/L in a new capsulated IRM delivery system (IRM CAPS). Microleakage measurements were made after various time intervals and after thermal stress. The results indicated that the lower P/L provided the best seals. All groups demonstrated significant microleakage measurements after thermal stress. Significantly greater microleakage measurements were obtained with the P/L of 6 g/ml and the manufacturer's recommended dispensing scoop and dropper. A P/L of 2 g/ml demonstrated less microleakage than the other groups tested.

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“…The following method was a modification of that described by MORTKNSEN et al (9) and KEL-LER et cd. (10). The bacterial suspension had been grown for 24 h in trypticase soy broth.…”

Section: Methodsmentioning

confidence: 99%

Study of titanium screws as retrograde fillings using bacteria and dye

Luomanen

Tuompo

1985

European J Oral Sciences

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– The tightness of retrograde titanium screw fillings and retrograde amalgam fillings was compared in 17 human, single‐rooted teeth using Serratia marcescens bacteria in vitro. The root canals were subjected to instrumentation and irrigation, after which 2 mm was cut off from the apical end. Eight of the teeth were sealed using retrograde titanium screw fillings and nine using retrograde amalgam fillings. The teeth were suspended by means of wires in test tubes, with the crowns upwards and the roots immersed in trypticase soy broth. Suspensions of Serratia marcescens bacteria were placed in the root canals, and samples from the broth were plated daily. The bacteria penetrated the apical titanium screw seals in 2 to 7 days, and the retrograde amalgam fillings readily on the first day. Thus, the titanium screws seemed to provide a tighter seal. Staining with India ink showed that penetration had occurred at the tooth‐filling margin and that the instrumentation had not caused any fractures to the roots.

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Microleakage of softened temporary restorations as determined by microorganism penetration

Cited by 31 publications

References 12 publications

Comparative sealing ability of temporary filling materials evaluated by leakage of radiosodium

Comparative sealing ability of temporary filling materials evaluated by leakage of radiosodium

Microleakage of IRM® used to restore endodontic access preparations

Study of titanium screws as retrograde fillings using bacteria and dye

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