Date of Award

Spring 1977

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)



First Advisor

Myers, C. L.

Second Advisor

Winders, Robert V.

Third Advisor

Drake, John V.


The direct bonding of orthodontic attachments has generated considerable enthusiasm among orthodontists. Within a relatively short period of time, a number of direct bonding resin systems and orthodontic attachments, for use in this technique, have been developed. The orthodontic practitioner may find it difficult to make objective comparisons between different materials because of the lack of information available regarding their physical and mechanical properties. It was hoped that this study could provide information about several direct bonding materials that would be useful in clinical practice. The objectives of this study were twofold: First, to obtain tensile bonding strength values for several orthodontic direct bonding resin systems when using perforated base and wire-mesh base metal orthodontic brackets. Second, to determine tensile bonding strength values for a series of wire-mesh base metal brackets which have been successively reduced in bracket base surface area.



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