Abstract:
OBJECTIVES:This study aimed to analyse loss of enamel worn against composite, leucite glass ceramic or enamel antagonists under non-erosive and alternating or simultanuous erosive-attritive conditions. MATERIALS AND METHODS:Flat human enamel specimens were loaded (1 Hz, 300 g loading weight, each subgroup n = 12) with antagonists made from a hybrid-composite (Z250, 3 M Espe), a nano-composite (Filtek Supreme XTE, 3 M Espe), leucite glass ceramic (IPS Empress CAD LT, Ivoclar Vivadent) or enamel. Specimens were either submitted to mechanical loading in mineral solution (60 s) or to loading under alternating or simultaneous erosive conditions. For alternating erosion-attrition, specimens were eroded by citric acid (pH 2.6, 60 s) and then loaded with the respective antagonist for 60s. For simultaneous erosion-attrition, specimens were loaded with the respective antagonist while being immersed in citric acid (pH 2.6, 60 s). After each cycle, specimens were stored in water for 1 h. After 18 cycles, enamel loss was calculated profilometrically and statistically analysed by two-way ANOVA and Tukey's post-hoc tests (p < 0.05). RESULTS:Enamel loss (μm, mean ± standard deviation) was significantly highest for simultaneous erosion-attrition (ceramic 9.4 ± 1.1, hybrid-composite 8.3 ± 0.7, nano-composite 7.8 ± 1.2, enamel 7.4 ± 0.8) followed by alternating erosion-attrition (ceramic 3.5 ± 0.5, hybrid-composite 2.1 ± 0.8, nano-composite 1.0 ± 0.2, enamel 2.5 ± 0.7) and attrition in mineral solution (ceramic 0.5 ± 0.3, hybrid composite 0.3 ± 0.1, nano composite 0.1 ± 0.2, enamel 0.1 ± 0.1). Ceramic antagonists resulted in significantly higher loss than the remaining antagonistic materials when alternating or simultaneous erosion-attrition was performed. CONCLUSION:Erosive conditions had a massive impact on enamel worn against different antagonistic materials, with simultaneous erosive-attritive conditions being more detrimental than alternating erosive-attritive conditions. CLINICAL RELEVANCE:Enamel wear by antagonistic restorative materials is significantly influenced by erosive conditions.
journal_name
Clin Oral Investigjournal_title
Clinical oral investigationsauthors
Wiegand A,Credé A,Tschammler C,Attin T,Tauböck TTdoi
10.1007/s00784-017-2071-9subject
Has Abstractpub_date
2017-12-01 00:00:00pages
2689-2693issue
9eissn
1432-6981issn
1436-3771pii
10.1007/s00784-017-2071-9journal_volume
21pub_type
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journal_title:Clinical oral investigations
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更新日期:2016-05-01 00:00:00
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journal_title:Clinical oral investigations
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更新日期:2021-02-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2016-03-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2016-06-01 00:00:00
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journal_title:Clinical oral investigations
pub_type: 杂志文章,随机对照试验
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更新日期:2010-08-01 00:00:00
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更新日期:2019-06-01 00:00:00
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更新日期:2017-07-01 00:00:00
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更新日期:2019-11-01 00:00:00
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journal_title:Clinical oral investigations
pub_type: 杂志文章,随机对照试验
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更新日期:2012-06-01 00:00:00
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journal_title:Clinical oral investigations
pub_type: 杂志文章
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更新日期:2017-05-01 00:00:00
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journal_title:Clinical oral investigations
pub_type: 杂志文章,评审
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更新日期:2016-03-01 00:00:00
abstract::The present study examines the three-dimensional (3D) morphology of early approximal subsurface enamel caries lesions and subjacent dentin reactions in deciduous molars. Twenty-three extracted primary molars were embedded in Technovit 9100 and serial sections were cut using a saw microtome. Forty approximal lesions we...
journal_title:Clinical oral investigations
pub_type: 杂志文章
doi:10.1007/s007840050066
更新日期:1998-12-01 00:00:00