Medicine and Health Sciences Commons^™

A Clinical Method For Predicting Orthodontic Band Sizes, Robert P. Mohr

Loma Linda University Electronic Theses, Dissertations & Projects

A correlation was established among the orthodontic band sizes in a given individual. The original sample contained 258 data sets (Unitek Corp. band sizes from first molar through the first molar in both arches) which were computer analyzed. The maxillary right central incisor band size was selected as the "predictor size" for a band size prediction table developed from this study.

An additional 56 data sets were tabulated and became the test sample to test the accuracy of the band size prediction table. Band sizes of the test sample were predicted within ±1 band size 66% of the time and …

Development Of A Short Form For The Carrow Elicited Language Inventory, Janet Lee Lawson

Loma Linda University Electronic Theses, Dissertations & Projects

This investigation was designed to determine if a shortened or screening form could be developed for use with the Carrow Elicited Language Inventory (CELl) at the first grade level. The sample for this research was comprised of fifty-six children between the ages of 5 years 9 months and 6 years 9 months. The children were chosen according to availability and time factors and came from middle socioeconomic backgrounds.

All subjects were tested with the CELl. After selection of items for the short form, each child's score on the short form was compared with his score on the CELI with the …

Stress Analysis Of Post And Crown Restorations Of Endodontically Treated Teeth, Ronald C. Hansen

Loma Linda University Electronic Theses, Dissertations & Projects

Forty-four similar sized maxillary lateral incisor teeth were randomly divided into four equal groups to test their resistance to fracture. Group 1 teeth were the controls, no treatment was done. Group 2 teeth consisted of endodontically treated teeth, restored with composite resin in the access opening. Group 3 teeth were endodontically treated and restored with a post and flat surface standardized aluminum crown. The teeth in Group 4 were endodontically treated and restored with a post and composite resin core buildup with a cast gold crown. The metal collar of gold incorporated 1.5 mm of tooth structure below the core …

Comparison Of Root Surfaces In Endodontic Lesions, Periodontic Lesions And Normal Human Teeth, Robert W. Hanson

Loma Linda University Electronic Theses, Dissertations & Projects

The healing potential of an endodontic lesion is usually greater than a periodontic lesion (Simon et al. 1972; Hiatt 1977). Periodontal regeneration places particular emphasis on the soft tissue-tooth interface (Stahl 1977). This interface was examined in fifteen extracted human teeth.

The teeth were divided into three groups: (1) periapical lesions, (2) periodontal lesions, and (3) healthy periodontal tissue. Criteria were established for each group. Freshly extracted human teeth meeting the criteria were fixed in gluteraldehyde or paraformaldehyde. The teeth were then selected for surface observation or cracked for cross sectional examination. The teeth were post fixed, dehydrated, and coated …

Tensile Properties Of Stainless Steel Orthodontic Wire, Elbert E. Jackson

Loma Linda University Electronic Theses, Dissertations & Projects

Ten types of .020 inch stainless steel wire were compared using a tensile test. The wires were tested in the as-received condition and after heat treatment at 750°F for eleven minutes. The data were then analyzed statistically using the general linear hypothesis.

In the as-received condition each of four mechanical properties--elastic modulus, 0.2 per cent yield strength, tensile strength, and percent elongation--was found to vary significantly from one type to another.

When subjected to heat treatment, the elastic modulus proved to be the most stable of the four properties, changing only slightly in three cases. There was no significant change …

Effect Of Storage On The Elastic Properties Of The Red Cell Membrane, Caroline M. Ballweg

Loma Linda University Electronic Theses, Dissertations & Projects

The goal for the preservation of blood is the optimal survival and function of the stored blood after reinfusion. In vivo means of assessing viability after storage would be ideal but these survival studies are expensive, involved, and not without danger. Thus, in vitro means have been sought to evaluate preservation. The most frequently used of the in vitro tests for predicting red blood cell survival is deformability.

This study applies a recently developed method of measuring deformability to assess changes in stored blood. In brief, the method involves drawing a "mini" unit of blood from each of three normal …

Utilization Of Dietetic Technicians In Hospitals, Elmer Beck

Loma Linda University Electronic Theses, Dissertations & Projects

There is a shortage of educationally qualified dietetic technician personnel in the health care industry. The job opportunities for dietetic technicians exceed the supply. Because of this shortage and the need to deliver high quality nutritional care to individuals and groups, dietitians should function at the highest level of professional competency. To accomplish this goal requires delegating certain routine task functions to the dietetic technician.

The purpose of this research was to determine the degree of change between 1973 to 1977 in the willingness of dietitians to delegate task function to the dietetic technician. The instrument used to collect data …

The Effect Of Preoperative Instruction And Unit Orientation On Selected Postoperative Factors Of Nonemergency Critical Care Surgical Patients, Sharon Stephens Espersen

Loma Linda University Electronic Theses, Dissertations & Projects

The intensive care unit's effect on the patient has become a subject discussed often by nurses and other health team members. One of the nursing interventions that has been implemented to attempt to de crease the potentially harmful environmental effects of the ICU on the patient is orienting the patient about what to expect prior to the ICU admittance.

A major problem is that most intensive care unit (ICU) patients are admitted to the unit on an emergency basis. Few studies, therefore, have focused on the effects of preoperative instruction of ICU patients. The studies that have been done were …

Effect Of Time And Diet On The Immune Status Of Mice Challenged With Herpes-Transformed Cells, Daila S. Gridley

Loma Linda University Electronic Theses, Dissertations & Projects

Human Herpes simplex virus type 2 (HSV 2)-transformed Balb/c mouse cells (H238 cells) are malignant in Balb/c mice. The immune stratus of mice bearing H238 cell-induced tumors was studied and changes in immune response with time and with altered diet of the mice were measured.

In the experiments dealing with the status of immunity with time after tumor cell injection, mice were fed Purina Laboratory Chow (P.L.C.), injected with H238 cells, and sacrificed three to eight weeks post-injection. In the diet experiments, groups of mice were fed either P.L.C. or one of six equicaloric diets, consisting of low or high …

The Effect Of Perceptual Set On Listener Judgments Of Voice Quality Deviations, Patricia M. Hansen

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to test the possible influence of perceptual set on listeners' judgments of voice quality deviations. Perceptual set was created by instructions given to an experimental group which limited their choices, thus encouraging a particular response. The effect of set on the overall performance of the group, on backward versus forward voice samples and on the level of experience of the listener were all investigated.

The sample for this study was comprised of 24 students of speech pathology and audiology. The subjects were divided into matched experimental and control groups and asked to listen to …

The Effect Of The Warm Water Bath On Axillary Temperature In Normal Newborns, Ann J. Morton

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to compare the effects of the warm water bath and the radiant heater on the axillary temperatures of normal newborns. The sample group consisted of thirty newborns--15 babies placed into the water bath in Group I, and 15 babies placed under the radiant heater in Group II. Birth weights were between 6.25 and 8.75 pounds, gestational ages between 37 and 41 weeks, and 5-minute Apgar scores were 8 or more. The maternal temperatures, taken within two hours before birth, ranged between 97 and 99 degrees. All infants were born by spontaneous or low-forceps vertex …

Computer Modeling Of Cardiac Electrical Activity By Polarcardiogram Patterns, Daniel K. Berry

Loma Linda University Electronic Theses, Dissertations & Projects

The objective of this thesis is to provide for the cardiologist polarcardiograms and additional diagnostic criteria which will enable him to diagnose heart disease more easily. Other contributions are those of: (a) providing a system of data acquisition and (b) analyzing Dr. Gordon Dower’s criteria for myocardial infarction using the programs provided in this thesis.

The problem inherent in the reading of a polarcardiogram is the identification of the "loop" patterns with the associated heart disease. This can be accomplished by reading and interpreting both vectorcardiograms and electrocardiograms as well as angiograms, then relating the interpretation to the polarcardiogram patterns. …

The Stability Of Expanded Mandibular Canines, Premolars, And Molars Concomitant With Rapid Midpalatal Expansion, Ralph S. Kurti

Loma Linda University Electronic Theses, Dissertations & Projects

The view of not expanding mandibular canines to accommodate incisor crowding because of the fear of relapse of of the incisors has been generally accepted in orthodontics for many years. Most studies that have investigated expanded mandibular canine stability have concluded that they could not be permanently expanded to any degree. By adding another variable (rapid midpalatal expansion) to canine expansion it was thought that this might possibly increase canine expansion stability.

The purpose of this research was to determine if the stability of the expanded canines through 1st permanent molars was enhanced by concomitant rapid expansion of the midpalatal …

Performance Of Task Functions By Dietetic Technicians, James C. Rose

Loma Linda University Electronic Theses, Dissertations & Projects

The effective use of professional dietitians is predicated on the effective delegation of less demanding responsibilities and routine tasks to educationally qualified dietetic technicians. This is essential to effect optimal nutrition care at lowest cost.

The purpose of this research was to determine the degree to which dietetic technicians were performing identified tasks of the role as defined by the American Dietetic Association. A questionnaire was the survey instrument used to collect data from the 130 dietetic technicians who were members of the American Dietetic Association.

Task scores were derived by determining the average per cent of listed functions the …

Phytate Extraction And Stimulation Of Phytase By Zn & Mg In Seeds, Sandra Gin-San Chow

Loma Linda University Electronic Theses, Dissertations & Projects

Almonds, peanuts, mung beans and soy beans were soaked in distilled water for 0, 2, 6, 18 and 24 hours, and the phytate in the seeds and in the soak water was quantitatively analyzed. A comparison of phytate content was made after the seeds were soaked in 0.01 N HCl or in saturated NaHco 3. The seeds soaked in distilled water served as controls. The effects of zinc and magnesium on stimulation of phytase in seeds were determined by comparing the quantity of substrate (phytate) with that of the control group.

The method for analyzing the phytate content was based …

The Effects Of Environmentally Induced Influences On The Neurologial Maturation And Weight Gain Of Premature Infants, Valerie Eastman

Loma Linda University Electronic Theses, Dissertations & Projects

Premature birth deprives the infant of the influences of maternal uterine stimulation on his physical growth and neurological development. It also deprives the newborn of the influences of the maternal sleep cycle and other aspects of maternal cyclicity. This problem has been recognized and studied for at least two decades by physiologists and neonatologists, but very few studies have been done on manipulating the premature infant's environment in order to foster cyclic patterns such as sleep.

It had been observed by this investigator that premature infants in a neonatal intensive care unit are often disturbed from quiet sleep so that …

The Effect Of 72 Consecutive Hours In The Coronary Care Unit On The Night Sleep Of 10 Patients Age 65 And Older, Eugenia J. Creason

Loma Linda University Electronic Theses, Dissertations & Projects

The prevalence of heart disease in the population over age 65 has contributed to the increasing number of aged patients hospitalized in critical care units (Gsell, 1977). Changes which occur in the process of aging and in cardiac disease should be considered when providing nursing care to these patients. A disturbance in the sleep wakefulness cycle resulting in a decrease of restorative sleep is a major change occurring at age 65 and after (Feinberg, 1967). The cardiac patient finds that it takes longer to go to sleep, and then awakens often during the night (Karacan et al., 1969).

Rome (1969) …

The Cardiovascular Effects Of Human Contact With Coronary Artery Disease Patients In The Coronary Care Unit, Margaret A. Palmour

Loma Linda University Electronic Theses, Dissertations & Projects

Ten coronary artery disease patients were selected using purposive method of sampling and observed for six hours. It was postulated that 1) Human contact with coronary artery disease patients in the coronary intensive care unit would be associated with significant (p = 0.05) changes in the electrocardiogram such as: (a) increased heart rate more than 10 per cent, (b) changed atrio-ventricular conduction more than 10 per cent, (c) changed ST segment one millimeter or more and (d) increased frequency of ectopic beats more than 10 per cent. 2) The degree of stress and cardiac response was related to a number …

The Effect Of Warmed Humidified Oxygen On The Temperature Of Depressed Newborns, Earlene Scharping

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to evaluate the effect of warmed humidified oxygen on the body temperature of depressed newborns and compare it to the effect of unwarned un-humidified oxygen administered under similar circumstances. The sample group consisted of a total of ten infants (five control and five experimental) with birth weights > 2000 gms who had an Apgar score of less than seven at birth and who required the administration of oxygen. The control group received oxygen in the routine delivery room manner (unwarned and un-humidified). The experimental group received oxygen which had been warmed to a temperature of …

Maternal Perception Of The Neonate, Linda Bertucci

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to determine the maternal perception of the neonate in two groups of patients. The Broussard Neonatal Perception Inventory was used to measure maternal perception. The Inventory was modified by the researcher for use with both primiparae and multiparae. The control group consisted of fifteen mothers receiving traditional postpartum care in the hospital setting. The study group was composed of fifteen mothers who, prior to delivery, chose to participate in an early discharge program. In the early discharge program the patient and her newborn returned home twelve to twenty-four hours after delivery with home follow-up …

The Effects Of Inducing Functional Class Iii Malocclusion On Actively Growing Rat Mandibles, Aarin Chu

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

Leadership Potentials And Personality Traits Of Associate Degree And Baccalaureate Degree Students In Selected Associate And Baccalaureate Nursing Programs, Beverely J. Cobb

Loma Linda University Electronic Theses, Dissertations & Projects

Leadership potentials and personality profiles of 27 associate degree and 20 baccalaureate degree nursing students were compared, using the California Psychological Inventory (CPI) and the Managerial Key for the CPI. The mean values on each of the 18 scales of the CPI and the mean values of the Managerial Score were compared and revealed no significant difference (p=.05) between the two groups of nursing students, and were within normal range, indicating average social and intellectual adjustment. Though the associate degree students had a higher mean value on the Managerial Score than the baccalaureate students the difference was not significant (p=.05). …

The Effects Of Heavy Vs. Light Force Cervical Headgear, Kenneth Grant Corbett

Loma Linda University Electronic Theses, Dissertations & Projects

A sample of 27 cases treated with CHG were selected from the files of Rocky Mountain Data Systems, Inc. and Dr. B. Fletcher. The cases were divided into two groups according to forces used during treatment to initiate and continue distal molar movement. Group I consisted of 15.cases which had been treated by Dr. Ricketts using heavy cervical traction (250-500 grams); Group II included 12 cases which Dr. Fletcher had treated with very light cervical traction (120-240 grams).

The measurements of distal molar movement, facial axis and maxillary depth were recorded for each of the groups and t-tests were used …

Role Of The Consultant Dietitian, Kathryn Hutchinson Dexter

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to determine: (a) the level of disagreement/agreement (role consensus) between skilled nursing facility administrators and consultant dietitians on the activities, responsibilities, and guilities which compose the ideal role (role expectations) of the consultant dietitian; (b) the extent to which administrators and consultant dietitians perceive discrepancies/consistencies between ideal (role expectations) and actual (reality) performance of the dietitian at present; and (c) the common deterrents, which consultant dietitians perceive as the basis for the dichotomy between ideal (role expectations) and actual (reality) role performance.

The one most significant inventory item for both disagreement and discrepancy was …

Ultrasonic Versus Hand Filing Of The Human Root Canal System, Howard W. Scholz Jr.

Loma Linda University Electronic Theses, Dissertations & Projects

A comparison was made of ultrasonic filing versus hand filing using three solutions to flood the canals of 24 extracted human maxillary central incisors. A modified PR-30 Cavitron insert was used in a Cavitron 1010 unit for the ultrasonic filing. The clinical crown was removed with a diamond saw and water spray at the cemento-enamel junction. The two major groups were ultrasonic filing versus hand filing; the three subgroups were solution/solvents - 10% EDTA, 2.0% NaOCl, and distilled water.

After filing, the roots were grooved longitudinally with a high speed bur and cracked opened with a mallet and chisel. The …

Relationships Between Central Auditory Function And Learning Disabilities, Joan M. Hirabayashi

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to compare the performance of "learning disabled" (LD) children and children with no identified learning problems on tests of central auditory function. Katz's Staggered.Spondaic Word (SSW) test and Willeford's Tests of Central Auditory Function (TCAF) were administered.

The groups consisted of twenty-one LD children (experimental) and twenty-one children with no identified learning problems (control). The groups were matched for age, sex, socioeconomic background, and IQ. None of the subjects had a peripheral auditory impairment.

Experimental and control groups differed significantly on the corrected left SSW ear scores at the 0.03 level, the corrected total …

Community Health Nursing Assessment And Counseling Of The Breast-Feeding Primipara, Donita Rotherham

Loma Linda University Electronic Theses, Dissertations & Projects

An experimental study was conducted with twenty-one breast-feeding primiparas during the initial four-week post-partal period to test the effect of in-home community health nursing assessment and counseling on the breast-feeding success rate. It was hypothesized that mothers receiving assessment and counseling regarding physical, informational and psychosocial needs, would be more successful than those who were not counseled.

Criteria for success were: (1) breast-feeding at four weeks postpartum, (2) an adequate milk supply as evidenced by no need for formula supplementation to keep the baby satisfied, (3) an infant weight gain of one to two pounds during the four-week period, and …

Human Placental Alkaline Phosphatase And Steroid Metabolism By Rat Adrenals, Allen G. Meier

Loma Linda University Electronic Theses, Dissertations & Projects

Human placental alkaline phosphatase was purified by butanol extraction, methanol precipitation and chromatography on DEAE-cellulose. The pH optimum was found to be 10.9. The enzyme was competitively inhibited by di-ethyl-p-nitrobenzyl-phosphonate and copper sulfate. An increase in enzymatic activity occurred in the presence of the phosphate ion (HPO₄) and ATP.

The enzyme was crystallized from a 40% saturated solution of ammonium sulfate and shown to be homogeneous by sedimentation analysis. Homogeneity of the enzyme was also demonstrated using poly-acrylamide-gel-electrophoresis. At a pH of 7.5% the electrophoretic pattern yielded a single band and showed no significant contamination.

The metabolic transformation …

The Effect Of Endodontic Therapy On The Incidence Of Radiation Caries In Dogs, James A. Abbott

Loma Linda University Electronic Theses, Dissertations & Projects

Endodontic therapy was evaluated as a possible control or prevention modality of radiation type dental caries in dogs. Two adult male dogs with permanent dentitions had endodontic therapy performed on alternating teeth in each jaw. The nontreated teeth served as controls.

The dogs were irradiated with 7000 rad Cobalt-60 radiation fractionated over an eight week period. The dogs were killed at 60 and 182 days post-irradiation. The teeth were removed from the jaws and immersed in methylene blue dye, sectioned, and the dye penetration pattern photographed. Diffusion of the dye into the tooth structure was quantified and statistically analyzed.

A …

Community Health Nursing Assessment And Counseling Of The Breast-Feeding Primipara, Donita Rotherham

Loma Linda University Electronic Theses, Dissertations & Projects

An experimental study was conducted with twenty-one breast-feeding primiparas during the initial four-week post-partal period to test the effect of in-home community health nursing assessment and counseling on the breast-feeding success rate. It was hypothesized that mothers receiving assessment and counseling regarding physical, informational and psychosocial needs, would be more successful than those who were not counseled.

Criteria for success were: (1) breast-feeding at four weeks postpartum, (2) an adequate milk supply as evidenced by no need for formula supplementation to keep the baby satisfied, (3) an infant weight gain of one to two pounds during the four-week period, and …