Dental Materials Commons^™

The Effect Of Post-Operative Use Of Chlorhexidine On Periodontal Regeneration In Monkeys With Chronic Bifurcation Defects, J. Pat Bishop

Loma Linda University Electronic Theses, Dissertations & Projects

Periodontal regeneration and inflammation was evaluated histometrically in 36 paired teeth in six macque(sic) monkeys with chronic bifurcation defects. Daily topical TL Chlorhexidine was applied to one-half of the teeth, saline to the other half for six weeks after the bifurcation defects were surgically debrided. Measurements were made from a section taken from the mid-bifurcation for each tooth. The results demonstrated no significant difference in the area of inflammatory response or the degree of regenerative capacity of post-operative healing between Chlorhexidine treated and paired nontreated control teeth.

Effect Of Post-Operative Use Of Chlorhexidine On Regeneration Of Bifurcation Defects In Dogs, Gary Bogle

Loma Linda University Electronic Theses, Dissertations & Projects

The daily post-operative use of topical chlorhexidine application has been compared to daily toothbrushing. Periodontal defects were experimentally created in the bifurcations of lower premolars in dogs. The defects were treated by surgical debridement. Chlorhexidine application and toothbrushing were performed post-operatively for six weeks on contralateral pairs of teeth. The amounts of connective tissue and bone regeneration were evaluated from microscopic sections of the bifurcation areas. No difference between chlorhexidine and tooth brushing was found for the connective tissue attachment. However, significantly more bone had regenerated in the chlorhexidine treated areas than the tooth brushed area.

The Theoretical Distribution Of Forces In The Rigid Component Of The Buccal Arch Positioner, Dennis H. Teruya

Loma Linda University Electronic Theses, Dissertations & Projects

The distribution of an applied force to the rigid component of the Buccal Arch Positioner was determined with a theoretically formulated model. The rigid component was assumed to be a free body without the semi-rigid attachments and was evaluated at four points for the force distribution. The summation of the forces and the moments were equated to zero and were utilized to derive equations to solve for the unknown forces. The unknown forces at each point of the rigid component were solved for in terms of the given force applications.

A laterally directed force application at one of the posterior …

A Study Of The Evaluation Of Various Techniques And Materials In The Obturation Of Lateral And Accessory Canals, Allen E. Flans

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this investigation was to test the effect of different types of condensation, irrigants, filling materials and techniques, and variations in root canal preparation, on the success of sealing lateral and accessory canals, whose presence was determined before hand, and to relate certain inherent anatomic and morphologic characteristics of these canals to the amount of sealing obtained. Seventy-three teeth containing 85 lateral canals were instrumented and irrigated with either NaOCl, NaOCl-RC Prep or saline. The filling materials used were gutta percha, softened and unsoftened and Cavit. Half the teeth were filled using sealer. Final radiographs were studied for …

The Clinical Efficacy Of Cavit, Eric J. Herbranson

Loma Linda University Electronic Theses, Dissertations & Projects

This paper was undertaken to study the use of Cavit an[sic] an endodontic filling material.

Part I examines the physical and biological properties of Cavit. This material has a 14% linear setting expansion, which results in a very tight interphase seal. It is theorized that this type of seal in connection with a three dimensional obturation is necessary to prevent the flow of irritant from the oral environment to the periapical tissue.

The biological properties are tentatively shown to be similar to ZOE.

A description of the use of Cavit in various clinical situations is included.

Part II is a …

The Development Of A New Appliance For The Third Stage Of Begg Treatment, Ronald C. Parker

Loma Linda University Electronic Theses, Dissertations & Projects

The third stage of Begg treatment can pose difficulties to the orthodontist. Some of the undesirable developments encountered are anchorage loss, unintentional tooth tipping, extrusion, intrusion, palatal and mandibular rotation, muscular strain and profile deficiency or procumbency. In the interest of eliminating or minimizing these developments a new appliance was developed for use during the third stage of treatment.

Simply described, the appliance consisted of a rigid vestibular arch that provided anchorage for flexible extensions to each tooth. Extraoral force was directed to the maxillary rigid arch to counter anterior root torquing forces.

Anchorage control, maxillary incisor torquing efficiency and …