Glass ionomer microleakage from preparations by an Er/YAG laser or a high-speed handpiece.

Abstract:

OBJECTIVE:The purpose of this study was to compare microleakage of glass ionomer materials (GIC) using two different modes of cavity preparation: a high-speed hand piece and an erbium/yttrium-aluminum-garnet (Er/YAG) laser. METHODS:Eighty caries free permanent molar teeth had class V preparations cut on both the buccal and lingual surfaces. The high-speed hand piece was used to prepare a class V cavity preparation on the buccal surface and an Er/YAG laser was used to prepare a class V cavity preparation on the lingual surface. GIC or resin modified GIC was used as the restorative material. The teeth were thermocycled for 7000 cycles, placed in 2% basic fushin for 24h, sectioned in the center of each restoration, and analyzed under a stereomicroscope. RESULTS:There was no statistical difference in microleakage between the two modes of cavity preparations. The gingival margins had more microleakage than the occlusal margins for both GIC materials and the resin modified GIC showed significantly more leakage than the conventional GIC. CONCLUSIONS:The Er/YAG laser provided an equivalent method of tooth removal when evaluated for microleakage of GIC materials compared to a high-speed hand piece.

journal_name

J Dent

journal_title

Journal of dentistry

authors

Quo BC,Drummond JL,Koerber A,Fadavi S,Punwani I

doi

10.1016/s0300-5712(02)00011-8

keywords:

subject

Has Abstract

pub_date

2002-05-01 00:00:00

pages

141-6

issue

4

eissn

0300-5712

issn

1879-176X

pii

S0300571202000118

journal_volume

30

pub_type

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