Bonding and debonding characteristics of APC-plus clarity brackets compared to APC clarity brackets. 2004

Kamelia Staribratova-Reister, and Paul-Georg Jost-Brinkmann
Department of Orthodontics and Dentofacial Orthopedics, Humboldt University of Berlin, University Hospital Charité, Berlin, Germany. kamelia.reister@charite.de

OBJECTIVE To investigate whether adding light-sensitive pigments (APC-Plus) has a significant effect on the times required for placing and debonding brackets compared with conventional APC brackets. METHODS Eighty extracted human permanent central incisors were bonded with APC ceramic brackets and APC-Plus ceramic brackets by four clinicians, and the times required were recorded. After thermocycling, the brackets were debonded. Adhesive remnants were removed by the same clinicians using four different instruments. The times required were recorded, and the enamel surfaces were checked for morphologic changes via scanning electron microscope. RESULTS Two clinicians needed significantly more time for bonding of the APC-Plus brackets (P < .05). For debonding, no significant differences could be found between APC and APC-Plus brackets for any of the instruments. The diamond burs and the conventional carbide burs required significantly less time than the Radlanski burs. The air-powder abrasive system took the longest time. The diamond burs caused substantial destruction of the enamel surface, whereas the Radlanski bur and the air-powder abrasive system left the surface intact. CONCLUSIONS The time needed for placement of the brackets and removal of adhesive remnants was not affected by adding light-sensitive pigments. For debonding, Radlanski burs and conventional carbide burs can be used, while diamond burs should be avoided.

UI MeSH Term Description Entries
D007180 Incisor Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820) Incisors
D008422 Materials Testing The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility. Biocompatibility Testing,Biocompatible Materials Testing,Hemocompatibility Testing,Testing, Biocompatible Materials,Testing, Hemocompatible Materials,Hemocompatibility Testings,Hemocompatible Materials Testing,Materials Testing, Biocompatible,Materials Testing, Hemocompatible,Testing, Biocompatibility,Testing, Hemocompatibility,Testing, Materials,Testings, Biocompatibility
D008437 Maxilla One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS. Maxillae,Maxillary Bone,Bone, Maxillary,Bones, Maxillary,Maxillary Bones,Maxillas
D001840 Dental Bonding An adhesion procedure for orthodontic attachments, such as plastic DENTAL CROWNS. This process usually includes the application of an adhesive material (DENTAL CEMENTS) and letting it harden in-place by light or chemical curing. Bonding, Dental,Cure of Orthodontic Adhesives,Curing, Dental Cement,Dental Cement Curing,Orthodontic Adhesives Cure
D002516 Ceramics Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed) Ceramic
D003743 Dental Enamel A hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing substance, and surrounded by an enamel sheath. (From Jablonski, Dictionary of Dentistry, 1992, p286) Enamel,Enamel Cuticle,Dental Enamels,Enamel, Dental,Enamels, Dental,Cuticle, Enamel,Cuticles, Enamel,Enamel Cuticles,Enamels
D003799 Dental Stress Analysis The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures. Analyses, Dental Stress,Analysis, Dental Stress,Stress Analyses, Dental,Stress Analysis, Dental,Dental Stress Analyses
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000269 Adhesives Substances that cause the adherence of two surfaces. They include glues (properly collagen-derived adhesives), mucilages, sticky pastes, gums, resins, or latex. Glues,Mucilage Adhesive,Mucilage Adhesives,Mucilages, Adhesive,Adhesive,Adhesive Mucilage,Adhesive Mucilages,Adhesive, Mucilage,Adhesives, Mucilage,Glue,Mucilage, Adhesive
D016382 Orthodontic Appliance Design The planning, calculation, and creation of an apparatus for the purpose of correcting the placement or straightening of teeth. Appliance Design, Orthodontic,Appliance Designs, Orthodontic,Design, Orthodontic Appliance,Designs, Orthodontic Appliance,Orthodontic Appliance Designs

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