Universität zu Köln

Fuss, Markus, Wicht, Michael J., Attin, Thomas ORCID: 0000-0002-6141-1263, Derman, Sonja H. M. ORCID: 0000-0003-2239-6010 and Noack, Michael J. (2017). Protective Buffering Capacity of Restorative Dental Materials In Vitro. J. Adhes. Dent., 19 (2). S. 177 - 184. HANOVER PARK: QUINTESSENCE PUBLISHING CO INC. ISSN 1757-9988

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Abstract

Purpose: To investigate the buffering capacity of restorative materials during a simulated carious and intrinsic erosive attack. Materials and Methods: Cavities with a volume of 130 mu l were milled (Cerec MC XL) out of blocks of Ceram X Mono (CM), Quixfil (QX), Filtek Supreme (FS), Apa Fill 3 (AF), an experimental dual-curing composite containing a bioactive glass (EX), Dyract eXtra (DY), Beautifil (BE), Equia Fil (EQ), Telio CAD (TL) (negative control), TheraCal (TC; positive control), and extracted teeth (ED). 80 mu l of lactic acid (pH 4.5) and hydrochloric acid (pH 2.6) were each pipetted into the cavities of two samples of each material. Change of pH in the solutions was measured continuously for 12 min using a calibrated pH electrode. Results: CM, AF, and FS (final pH 3.0-3.2) neutralized hydrochloric acid to a significantly lesser extent than did BE, EQ, DY and QX (final pH 5.0-5.6) (p < 0.05, ANOVA Scheffo). The lactic-acid buffering capacity of CM, BE, and AF was equivalent (final pH 6.3-7.4) to that of ED (7.5), but was surpassed by FS (pH 8.0). pH values for EX and TC (final pH 9.2-11.3) increased significantly (p < 0.05) in response to both acids. Conclusions: Conventional restorative materials do not buffer better than human teeth. However, the experimental composite demonstrates that buffering against carious and intrinsic erosive acid attacks is technically feasible.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Fuss, Markus UNSPECIFIED UNSPECIFIED UNSPECIFIED Wicht, Michael J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Attin, Thomas UNSPECIFIED orcid.org/0000-0002-6141-1263 UNSPECIFIED Derman, Sonja H. M. UNSPECIFIED orcid.org/0000-0003-2239-6010 UNSPECIFIED Noack, Michael J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-245925
DOI:	10.3290/j.jad.a38140
Journal or Publication Title:	J. Adhes. Dent.
Volume:	19
Number:	2
Page Range:	S. 177 - 184
Date:	2017
Publisher:	QUINTESSENCE PUBLISHING CO INC
Place of Publication:	HANOVER PARK
ISSN:	1757-9988
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FLUORIDE RELEASE; RESIN COMPOSITE; CARIOUS LESIONS; ROOT CARIES; PH; GLASS; CEMENT; WATER; COMPOMER; CALCIUM Multiple languages Dentistry, Oral Surgery & Medicine Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24592