Pit and Fissure Sealant Retention Following Air Abrasion Preparation with Bioactive Glass and Aluminum Oxide Particles.
OBJECTIVE
Alumina air abrasion is an alternative for acid-etch technique for tooth preparation before placement of a fissure sealant. The aim of this study was to compare the retention of sealants placed subsequent to air abrasion with alumina and bioactive glass (BAG) particles.


METHODS
Sixty-two 6-12 year old children were included in this study. Using a halfmouth design, the fissures were prepared using air abrasion with alumina particles on randomly assigned permanent mandibular or/and maxillary first molars on one side of the mouth (Group 1) and air abrasion with BAG on the contralateral side of the mouth (Group 2). Sealants were applied on 180 teeth, and were scored as missing, partially retained, and completely retained after three, six, nine and 12 months. Data were analyzed using Friedman and Wilcoxon tests (α=0.05).


RESULTS
Sealant retention rates in the alumina group were higher than those in the BAG group at all time periods (P<0.001).


CONCLUSIONS
Sealant retention after air abrasion with alumina particles was higher than BAG over 12 months.
Dental Materials Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Maryam
M
Khoroushi
Dental Materials Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
Alireza
A
Eshghi
Department of Pediatric Dentistry, Shahrekord, Chaharmahal and Bakhtiari University of Medical Sciences, Isfahan, Iran. fatemehnaderidnt@gmail.com.
Fatemeh
F
Naderibeni
D000134:Acid Etching, Dental / Q000379:methods; D020906:Air Abrasion, Dental / Q000379:methods*; D000537:Aluminum Oxide / Q000737:chemistry / Q000627:therapeutic use*; D002648:Child; D001840:Dental Bonding / Q000379:methods*; D003731:Dental Caries / Q000517:prevention & control; D003743:Dental Enamel / Q000648:ultrastructure; D019232:Dental Restoration Failure; D005500:Follow-Up Studies; D005898:Glass / Q000737:chemistry*; D006801:Humans; D007492:Iran; D008855:Microscopy, Electron, Scanning; D008963:Molar / Q000648:ultrastructure; D010895:Pit and Fissure Sealants / Q000737:chemistry / Q000627:therapeutic use*; D013499:Surface Properties; D016896:Treatment Outcome
D010895:Pit and Fissure Sealants; D000537:Aluminum Oxide