title: Enamel Thickness before and after Orthodontic Treatment Analysed in Optical Coherence Tomography.
abstract: Despite the continuous development of materials and techniques of adhesive bonding, the basic procedure remains relatively constant. The technique is based on three components: etching substance, adhesive system, and composite material. The use of etchants during bonding orthodontic brackets carries the risk of damage to the enamel. Therefore, the article examines the effect of the manner of enamel etching on its thickness before and after orthodontic treatment. The study was carried out in vitro on a group of 80 teeth. It was divided into two subgroups of 40 teeth each. The procedure of enamel etching was performed under laboratory conditions. In the first subgroup, the classic method of enamel etching and the fifth-generation bonding system were used. In the second subgroup, the seventh-generation (self-etching) bonding system was used. In both groups, metal orthodontic brackets were fixed and the enamel was cleaned with a cutter fixed on the micromotor after their removal. Before and after the treatment, two-dimensional optical coherence tomography scans were performed. The enamel thickness was assessed on the two-dimensional scans. The average enamel thickness in both subgroups was not statistically significant.
authors.affiliation: Division of Orthodontics, Technical University Dresden, Dresden, Germany.
authors.forename: Julia
authors.identifier: 0000-0003-4665-335X
authors.initials: J
authors.lastname: Seeliger
authors.affiliation: Division of Orthodontics, Pomeranian Medical University, Szczecin, Poland.
authors.forename: Monika
authors.identifier: 0000-0001-5787-222X
authors.initials: M
authors.lastname: Machoy
authors.affiliation: Department of Biomedical Computer Systems, University of Silesia, Faculty of Computer Science and Materials Science, Institute of Computer Science, Katowice, Poland.
authors.forename: Robert
authors.initials: R
authors.lastname: Koprowski
authors.affiliation: Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Szczecin, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Safranow
authors.affiliation: Division of Orthodontics, Technical University Dresden, Dresden, Germany.
authors.forename: Tomasz
authors.identifier: 0000-0002-3551-6467
authors.initials: T
authors.lastname: Gedrange
authors.affiliation: Division of Orthodontics, Pomeranian Medical University, Szczecin, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Woźniak
mesh_terms: D003743:Dental Enamel / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D016910:Orthodontic Brackets; D041623:Tomography, Optical Coherence / Q000379:methods*; D014070:Tooth / Q000473:pathology