Time dependence of multi-ion absorption into human enamel from surface prereacted glass-ionomer (S-PRG) filler eluate

• Published in: Dental Materials Journal Vol. 38; no. 5; pp. 707 - 712
• Main Authors: OGAWA, Ayumi, WADA, Takahiro, MORI, Yoshiyuki, UO, Motohiro
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society for Dental Materials and Devices 27.09.2019; Japan Science and Technology Agency
• Subjects: Anions; Atomic beam spectroscopy; Cations; Dental caries; Dental enamel; Dentistry; Elemental analysis; Emission analysis; Emission spectroscopy; Enamel; Glass; Immersion; Incorporation; Inductively coupled plasma; Ion absorption; Ionomers; Spectroscopy; Strontium; Submerging; Surface pre-reacted glass-ionomer filler; Teeth; Time dependence; Strontium; Time dependence; Ion absorption; Elemental analysis; Surface pre-reacted glass-ionomer filler
• ISSN: 0287-4547; 1881-1361
• DOI: 10.4012/dmj.2018-314

Ion incorporation into the tooth is expected to be effective for caries prevention. Time-dependent ion incorporation released from surface pre-reacted glass-ionomer (S-PRG) filler eluate into tooth enamel was estimated by using inductively coupled plasma atomic emission spectroscopy (ICP-AES). Al, B, and Sr contents in enamel were increased in a time-dependent manner with immersion in S-PRG eluate. Clear ion incorporation was observed after 1 h of immersion in S-PRG filler eluate. Sr showed remarkable incorporation in enamel —up to 7,900 ppm— after 28 days of immersion. Sr and B incorporation rapidly occurred in S-PRG filler eluate, compared with their single component solutions. Simultaneous incorporation of cations and anions from S-PRG eluate occurred under balanced charge and may assist in rapid ion incorporation. Thus, various useful ions could be effectively incorporated into tooth enamel by applying S-PRG filler or its eluate; a bioactive effect can be expected.