Abstract:
:The aim of this study was to develop and evaluate an automatic pH-cycling system, which was intended for performing time-lapse analyses of dental caries. Two single-section specimens prepared from each of the five extracted human incisors were studied under a condition of 3- or 9-cycles/day for seven weeks. Increase of mineral loss (delta delta Z) and increase of Ld (delta Ld) were examined and compared at the end of every week during the study. In the 3-cycles/day condition, delta delta Z and delta Ld significantly increased only at Week 7. In the 9-cycles/day condition, delta deltaZ increased significantly from Week 5. delta Ld increased from Week 2, and then there were no further increases for the subsequent five weeks. Based on the results of this study, progression pattern was found to be significantly different between the two conditions. We therefore concluded that the automatic pH-cycling system which we have developed qualified as a model system that simulated the human oral cavity. As such, it could be beneficially employed to clarify the roles of many factors that cause or prevent caries development in human teeth.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Matsuda Y,Komatsu H,Murata Y,Tanaka T,Sano Hdoi
10.4012/dmj.25.280subject
Has Abstractpub_date
2006-06-01 00:00:00pages
280-5issue
2eissn
0287-4547issn
1881-1361journal_volume
25pub_type
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