An in vitro evaluation of injectable thermoplasticized gutta-percha, glass lonomer, and amalgam when used as retrofilling materials

Olson, A K; MacPherson, Michael G.; Hartwell, Gary R.; Weller, R. Norman; Kulild, James C.

doi:10.1016/s0099-2399(06)81906-0

Cited by 26 publications

(7 citation statements)

References 20 publications

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“…Studies have shown that glass ionomer cement possesses antibacterial activity due to slow release of fluoride [13]. However, clinically, the plasticity and stickiness of glass-ionomer cement impede condensation into the root-end cavity, and it is extremely sensitive to moisture [14][15][16][17]. Biodentine™ is a calcium silicate based material used for crown and root dentin repair treatment, repair of perforations or resorptions, apexification and root-end fillings.…”

Section: Resultsmentioning

confidence: 99%

Comparative Evaluation of Marginal Adaptation of BiodentineTM and Other Commonly Used Root End Filling Materials-An Invitro Study

Vemisetty

Reddy

et al. 2014

JCDR

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Section: Resultsmentioning

confidence: 99%

Comparative Evaluation of Marginal Adaptation of BiodentineTM and Other Commonly Used Root End Filling Materials-An Invitro Study

Vemisetty

Reddy

et al. 2014

JCDR

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“…(Oynick & Oynick 1978. Tronstad et al 1983, Olson et al 1990. Fewer research efforts have been devoted to the second pathway.…”

Section: Introductionmentioning

confidence: 99%

Scanning electron microscopic study of the apical dentine surfaces lased with Nd: YAG laser following apicectomy and retrofill

et al. 1992

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The purpose of this investigation was to study the effects of a Nd:YAG laser on the cut surface of teeth using scanning electron microscopy (SEM). Eighteen single-rooted teeth were cleaned, shaped, and obturated with gutta-percha and root canal sealer. The apical 3 mm of each tooth were resected with a diamond fissure bur, and the teeth were randomly divided into two groups of nine teeth each. The resected surface of each root in one group was lased twice. The duration of lasing and the number of pulses were recorded for each tooth. The teeth were air dried, mounted on stubs, sputter-coated with gold-palladium and examined under SEM. Application of the Nd:YAG laser caused melting of apical dentine surfaces. The melted material resembled the appearance of glazed interconnected droplets. Resolidification and recrystalization of the melted areas appeared to be incomplete and discontinuous. Some areas between the glazed regions appeared similar to those of non-lased apical dentine resected root surfaces.

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“…These contradictory findings are difficult to reconcile but may be attributed to differences in methodology. Many in-vitro studies use a cavity depth of 2 mm (Kos et al 1982), Becker & von Fraunhofer 1989, Shaw et al 1989, Olson et al 1990) and some even use 3 mm (Abdal & Retief 1982, Mattison et aJ, 1985, Tuggle et al 1989, King et al 1990, Clinically, this may not he realistic because it is difficult to drill 3 mm in the long axis ofthe root in the presence of a very large periapical osseous defect (Rud and Andreasen 1972) unless a small handpiece is available. The restricted access only permits an angled approach, which may result in a palatal perforation (Gutmann & Harrison 1991), Another variable which would influence the outcome of the study was the ability to condense the amalgam satisfactorily (Friedman 1991), The adaptation of amalgam to the cavity wails is an operator-sensitive procedure that is not easy to master, even under ideal laboratory conditions (Mahler & Nelson, 1984), The ease of condensation is not only a function of the properties ofthe material and manual dexterity, but also that of the cavity design.…”

Section: Discussionmentioning

confidence: 99%

The effect of retrograde cavity design on microleakage of amalgam fillings

1995

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A phantom head model was modified to simulate as closely as possible the limited access encountered during periapical surgery on maxillary anterior teeth. Extracted human maxillary anterior and mandibular canine teeth were placed in this model in a standardized position for root resection, retrograde cavity preparation and filling with amalgam. Three different designs of retrograde cavities were evaluated: the conventional class 1 cavity, the slot cavity and a previously unreported approach, the funnel cavity. Upon completion of the retrograde filling, the teeth were removed from the model and subjected to microleakage tests by placing radiolabelled lipopolysaccharide in a reservoir created coronal to the retrograde fillings. Leakage was quantified by measurement of radioactivity in scintillation counter. It was found that the retrograde fillings in the funnel cavity leaked significantly less than those in the other two cavity designs. There was no statistically significant difference in leakage between the conventional class 1 and the slot cavities up to the thirtieth day 30.

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An in vitro evaluation of injectable thermoplasticized gutta-percha, glass lonomer, and amalgam when used as retrofilling materials

Cited by 26 publications

References 20 publications

Comparative Evaluation of Marginal Adaptation of BiodentineTM and Other Commonly Used Root End Filling Materials-An Invitro Study

Comparative Evaluation of Marginal Adaptation of BiodentineTM and Other Commonly Used Root End Filling Materials-An Invitro Study

Scanning electron microscopic study of the apical dentine surfaces lased with Nd: YAG laser following apicectomy and retrofill

The effect of retrograde cavity design on microleakage of amalgam fillings

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