Dentistry Commons^™

Accuracy Of The Indirect Method Evaluated By Mercury Micromeasurement, Estol C. Pruett

Loma Linda University Electronic Theses, Dissertations & Projects

Although the indirect method for preparing dental castings has been in use for over forty-five years, very little information has appeared in dental literature relative to its accuracy. The development of a precise and quantitative method for determining the adaptation of wax patterns or castings was necessary before such an evaluation could be considered valid. It was felt the Mercury Micromeasurement test, devised in 1958 by Hollenback, should meet these requirements. A description of the test had been published. However, at the time the project was begun, no data had appeared in the literature.

In order to establish a standard …

An Evaluation Of The Physical Properties Of Cohesive Gold (Mat And Foil), Earl W. Collard

Loma Linda University Electronic Theses, Dissertations & Projects

Methods and instruments were devised particularly for this research project on the physical properties of cohesive gold, whereby the following procedures were accomplished:

1. Cohesive gold can be annealed under controlled conditions.
2. The blow delivered by an automatic spring mallet, pneumatic mallet, and Electro-Mallet can be evaluated and controlled.
3. The condensing point can be stepped in accurate and controlled increments.
4. Increments of laminated gold can be used permitting a known thickness of foil beneath the condensing point at all times.
5. A standard analytical balance can easily be converted for specific gravity tests.
6. Specimens were tested for adaptation by air pressure while …

The Effect Of Preweanling Administration Of Carbohydrates Used In Infant Formulas On Subsequent Dental Caries In White Rats, Erlinda Amor Romulo

Loma Linda University Electronic Theses, Dissertations & Projects

The high incidence of tooth decay, one of the most common diseases found in all age groups, gives a reason for the study of methods to prevent dental caries. Certain dietary factors, specifically carbohydrates, have been implicated in the decay process. Since diet influences both the oral and systemic environments in which the teeth develop, mature, age, and decay (1), many studies have been conducted to determine the effects of oral administration of different carbohydrates on dental caries. The extrinsic effects of diet on the mature erupted tooth have, however, been the major concern of the research (2).

The first …