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Surface wear on cervical restorations and adjacent enamel and root cementum caused by simulated long‐term maintenance therapy
Author(s) -
Rühling A.,
Wulf J.,
Schwahn C.,
Kocher T.
Publication year - 2004
Publication title -
journal of clinical periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.456
H-Index - 151
eISSN - 1600-051X
pISSN - 0303-6979
DOI - 10.1111/j.1600-051x.2004.00482.x
Subject(s) - cementum , curette , dentistry , amalgam (chemistry) , enamel paint , glass ionomer cement , polishing , materials science , composite material , medicine , chemistry , dentin , surgery , electrode
Background: In an in vitro study, the surface wear on cervical restorations and adjacent enamel and root cementum caused by different tooth‐cleaning methods in simulated long‐term therapy was investigated. Methods: Cervical restorations of amalgam (Oralloy®), modified composite resin (Dyract®), glass‐ionomer cement (ChemFill Superior®), and composite (Tetric®) were instrumented by POL (polishing), CUR+POL (curette and polishing), US+POL (ultrasonic device with polishing) and the polishing agents Cleanic® and Proxyt® in a computer‐controlled test bench. Treatment time corresponding to a real‐time period of 5 or 10 years. Substance loss from instrumented surfaces was measured with a digital gauge. A three‐way anova was used in the statistical evaluation. Results: The results showed that POL led to slight substance loss, which was greater using Cleanic® (27 μ m) than Proxyt® (5 μ m). CUR+POL produced a significantly greater substance loss than did US+POL, with 186 μ m versus 35 μ m on glass‐ionomer cement, respectively, and 123 μ m versus 18 μ m, respectively, on root cementum, followed by composite (111 μ m versus 27 μ m, respectively), polyacid modified composite resin/compomer (89 μ m versus 36 μ m), amalgam (75 μ m versus 19 μ m), and enamel (32 μ m versus 23 μ m). Conclusions: As opposed to the use of US+POL or POL, substance loss on cervical restorations and especially root cementum must be expected to result from tooth‐cleaning during long‐term maintenance treatment using CUR+POL.