Medicine and Health Sciences Commons^™

The Modified Index Of Severity Scale, Marion Gamundoy

Loma Linda University Electronic Theses, Dissertations & Projects

[No Abstract Included]

Force Relaxation In Matched Light Titanium And Stainless Steel Wires, Granville Gene Wilson

Loma Linda University Electronic Theses, Dissertations & Projects

Force relaxation was constantly monitored in light titanium alloy and stainless steel wires over a 7 day period in a simulated use test. The smallest dimension of round titanium wires now available were matched with round stainless steel wires in dimensions that most closely approximated the same stiffness. The .016" NITINOL (Unitek) and TITANAL (Lancer Pacific) wires were compared to .012" Standard Permachrome (Unitek) wire. The .016" TMA (Ormco) wire was compared to .014" Standard Permachrome (Unitek) wire. Six samples were tested for each wire type.

Each wire was ligated with Alastic modules (Unitek) into .018" x .025" slots of …

Effects Of Dentin Chips, Hydroxyapatite, And Demineralized Dentin As Apical Plugs, D. Wylie Brandell

Loma Linda University Electronic Theses, Dissertations & Projects

Two mm plugs of demineralized dentin, hydroxyapatite, or dentin chips were condensed into the apical perforations of 48 anterior teeth of eight adult cynamolgus monkeys. The remainder of the canals were obturated with gutta percha and Grossmans sealer using lateral condensation technique. The degree of hard tissue formation and inflammation was evaluated at three and six months. No significant changes were noted between various materials at three months. However, after six months, the samples with apical plugs of hydroxyapatite had more hard tissue formation and less inflammation than others.

A Comparison Of Enamel Detachments After Debonding Between Unitek's "Dynalok" Bracket And A Foil-Mesh Bracket: A Scanning Electron Microscope Study, Robert E. Meister

Loma Linda University Electronic Theses, Dissertations & Projects

The intent of this paper was to: 1. Evaluate the mode of adhesive failure when debonding both flexible and rigid base orthodontic brackets. 2. Evaluate the bracket bases for enamel detachments. 3. Measure the enamel detachments.

After preforming shear test on flexible and rigid base orthodontic brackets mounted to extracted human teeth it was determined that failure occurred at the enamel/adhesive interface 30% of the time, at the bracket/adhesive interface 10% of the time and a combination of these 60% of the time for both groups.

Five brackets from each group were evaluated for enamel detachments using energy dispersive x-ray …

Extrathyroidal Human Biochemistry Of Monoiodotyrosine, Stanley Andrew Tan

Loma Linda University Electronic Theses, Dissertations & Projects

The existence of extrathyroidal monoiodotyrosine (MIT) has been debated because of uncertain results from measuring serum MIT. The reason is that the isotopic and chromatographic assays used have not been sensitive enough. This investigation undertook to establish the existence of MIT in serum utilizing a radioimmunoassay (RIA), to study the physiology of serum MIT, and to discover the pharmacologic effects of exogenous MIT.

MIT-binding antibody was raised in rabbits by immunization with an MIT-porcine thyroglobulin conjugate. The antiserum bound 40% of the labeled MIT at a final dilution of 1:1000. Incubation of 100 µ1 antiserum with 50 pg [^{125 …}

Age-Related Changes Of Neurites In Meissner Corpuscles Of Diabetic, Vicky R. Ras

Loma Linda University Electronic Theses, Dissertations & Projects

This thesis is based on a qualitative and quantitative study of the neural component of Meissner corpuscles of diabetic and non-diabetic mice. Age-related changes were also documented in these mechanoreceptors. Corpuscles from forty-six diabetic mice and forty-six non-diabetic mice ranging from 2.5 to 17 months old were studied. Forepaw index digital pads were formalin-fixed and frozen-sectioned parallel to each digit and perpendicular to the skin. Serial sections were then silver-impregnated to allow light microscopic examination of the neurites in the corpuscles.

Neurites became more coarse, tortuous, branched, varicose, and thus more complex until middle age. Corpuscle size appeared greatest at …

Physical Activity And Its Relationship To Life Satisfaction And General Health In The Elderly, Joan A. Hannicker Clay

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to Investigate the relationship between the level of physical activity and life satisfaction and general health in the elderly.

The null hypothesis stated there would be no relationship between levels of physical activity and life satisfaction, common ailments, and health perception in the elderly (alpha = 0.05). The study was a correlational survey using a convenience sample from four groups of elderly subjects.

Ordinal data was obtained through a health questionnaire administered to sixty subjects who met the criteria. Statistical analysis using chi-square found no relationship between the physical activity level and life satisfaction …

Temporomandibular Joint Relations Of Bone And Lateral Pterygoid Muscle : A Computerized Tomography Study, Duane K. Yamashiro

Loma Linda University Electronic Theses, Dissertations & Projects

This study utilized the imaging technique of computerized tomography (CT). Scans taken with a GE CT/N 8800 scanner of an adult cadaver and a 12-patient group were obtained through the Loma Linda University School of Dentistry, TMJ Department, and Loma Linda University Medical Center, Department of Neuroradiology.

The lateral scout image and a lateral cephalogram of the cadaver were compared using six angular measurements for facial type from Ricketts' Cephalometric Analysis. The six measurements, Maxillary Depth, Facial Depth, Mandibular Arc, Mandibular Plane, Lower Face Height and Facial Axis, were found to be similar. This allowed the investigator to rely exclusively …

A Comparison Of Indirect Lingual Bracket Placement By Practitioners And A Commercial Laboratory As It Relates To Crown Torque, Randy E. Buchmiller

Loma Linda University Electronic Theses, Dissertations & Projects

Four sets of patient models were selected from the eighty cases Ormco Corporation used in the development of their lingual bonded appliance. These four sets of models were duplicated and identical sets of four models were sent to each practitioner and the laboratory. The practitioners and the laboratory were to position the lingual brackets on the models from second bicuspid to second bicuspid upper and lower and return them to Loma Linda University Department of Orthodontics for evaluation.

The laboratory chosen for placement of the brackets was the Ormco laboratory in Glendora, California. The laboratory ran these four cases through …

The Effects Of Maternal Administration Of Methadone On Beta-Endorphin Content In The Brain And Pituitary Of The Rat Progeny, Randall L. Braun

Loma Linda University Electronic Theses, Dissertations & Projects

Methadone is often used in the maintenance and detoxification of opioid-dependent pregnant women. This use of methadone during pregnancy is known to be associated with teratogenic effects observed in the progeny. The present study is an attempt to gain insight into possible pathophysiologic mechanism(s) responsible for these teratogenic effects: specifically, a relationship between maternal methadone administration and the content of the endogenous opioid peptide, beta-endorphin, in the brain and pituitary of the rat progeny.

In brief, nulliparous mature female Sprague-Dawley rats received daily injections (5 mg./kg.) of methadone hydrochloride (methadone-treated) or a similar volume of physiological saline (controls), treatment started …

Cephalometric Changes In The Soft Tissue Chin After Orthodontic Treatment, Ruchi Nanda Singh

Loma Linda University Electronic Theses, Dissertations & Projects

This study was performed to cephalometrically assess the soft tissue chin changes from orthodontic treatment and after 5 years post-treatment. Variability in the soft tissue chin structure between the different facial types and between the sexes was also evaluated.

Sixty patients, treated by Dr. Ricketts, were selected from the Rocky Mountain Data system files. Pretreatment, post-treatment and 5 year post-treatment cephalograms were taken on each patient and the soft tissue chin thickness was measured at six points around the symphysis. Means and standard deviations were calculated for each point on the symphysis by sex and facial type.

The post-treatment data …

Measuring The Effectiveness Of Patient Teaching In Postpartum Patients, Nancy Racine

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

Third Molar Eruption Prediction, Michael L. Jacobsen

Loma Linda University Electronic Theses, Dissertations & Projects

The diagnosis and treatment of third molars has often been cited as a special problem to the orthodontist. If the prognosis of third molars could be determined, orthodontic treatment could progress on a more positive basis.

This study was designed to provide a method of deciding whether developing third molars will erupt or become impacted.

Records from 130 orthodontically treated cases of Dr. Fredsall⁸ were studied. Several factors were evaluated and measured using the patients' cephalometric radiographs.

The actual fate of the third molars were recorded in the hope it could be used to predict what to expect from …

A Comparison Of The Nance Holding Arch And Kloehn Headgear In Maxilliary Molar Anchorage, Michael J. Fillman

Loma Linda University Electronic Theses, Dissertations & Projects

A sample of thirty first bicuspid extraction patients, ages 9 through adult, were evaluated for maxillary molar anchorage loss during cuspid retraction. The Nance Holding Arch and Kloehn cervical headgear were compared as anchorage devices. A control group received no anchorage mechanics during cuspid retraction. All cuspids were retracted with Hilger's loop retractors.

Anchorage loss was measured cephalometrically by comparing the difference in the 6 to PTV measurement on the initial and post cuspid retraction lateral head films.

Anchorage loss, as the dependent variable, was compared to the study groups, Angle class, facial type, treatment length, palatal angle and distance …

Chronic Respiratory Disease Symptom Effects Of Long-Term Cumulative Exposure To Passive Tobacco Smoke And To Ambient Levels Of Tsp, Oxidants, So2, And No2 In Southern California, Gary L. Euler

Loma Linda University Electronic Theses, Dissertations & Projects

To assess risk of chronic respiratory disease symptoms due to long-term exposure to the ambient levels of TSP, oxidants, SO2 and NO2 in photochemical air pollution, symptoms were ascertained using NHLBI questions on 8,572 Southern California Seventh-day Adventist, nonsmokers, 25 years and older, who lived eleven years or longer in their 1977 residential area. Tobacco smoke, active and passive, and occupational exposures were measured by questionnaires, as well as lifestyle characteristics relative to pollution exposure such as time spent outside and residence history. A pulmonary function feasibility study was done on a subsample of 86 women 50-64 years of age …

The Effect Of Dietary Alpha - Linolenic Acid On Apparent Risk Factors Of Cardiovascular Disease, Kelvin D. Lindbeck

Loma Linda University Electronic Theses, Dissertations & Projects

Eight healthy male lacto-ovo-vegetarian subjects averaging 28.0 ± 3.6 years of age (22 to 53 years) were fed a diet rich in α-linolenic acid (18:3 ω 3) for four weeks. Arterial blood pressure and body weight were recorded each week. Plasma 6-keto-prostaglandin F_1α (6-keto- PGF_1α ), thromboxane B₂ (TXB₂), total cholesterol, triglyceride, and total phospholipid fatty acid composition were analyzed at 0, 2 and 4 weeks.

Systolic blood pressure increased significantly between weeks 0 and 1 (106.5 ± 2.7 mmHg to 114.0 ± 3.7 mmHg; p < 0.003), but decreased to 107.3 t 2.6 mrHg (p < 0.02) at week 2. There was an insignificant increase in both systolic and diastolic blood pressures after four weeks. There was no significant change in either total cholesterol or triglyceride levels during the four weeks.

Plasma 6-keto-PGF_1α levels increased significantly from 60.13 ± …

Clinical Dietetic Technician A.D.A. Role Delineation Verification, Carol S. Hilovsky

Loma Linda University Electronic Theses, Dissertations & Projects

The changing role of the clinical dietitian has resulted in evaluation and identification of the appropriate role for the clinical dietetic technician. In 1981 the American Dietetic Association published the Role Delineation for Entry Level Clinical Dietetics including the responsibilities for the clinical dietetic technician practice level. Research comparing actual role performance of clinical dietetic technicians to the role defined in the delineation study was not found in a review of the literature.

This research was conducted to verify the degree to which clinical dietetic technicians are performing tasks identified for their role and to identify educational deficiencies and/or excesses. …

The Effect Of Electroshock On The Passage Of Bacteria From A Contaminated Transducer Past A Protective Membrane Into A Disposable Chamber Dome, Patricia K. Taylor Pothier

Loma Linda University Electronic Theses, Dissertations & Projects

Infection related to use of Intra-arterial Hemodynamic Monitoring Devices is a serious complication. In an attempt to decrease the risk of infection presterilized chamber domes were developed to isolate the patient vascular system from the pressure transducer. Users were informed by manufacturers of the domes that routine decontamination of transducer heads was not necessary. Since the development of these disposable chamber domes infection outbreaks have continued to occur. Epidemiological investigation has implicated contact transmission of bacteria due to poor handling techniques in some outbreaks. However, in other outbreaks the source of the epidemic was found to be contaminated transducer heads …

Facilitation Of C.O.P.D. Patient Compliance In Self-Administration Of Medical Modalities Through In-Hospital Specialized Education Program, Elizabeth Maddox

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

Telephone Inquiries, Types Of Calls : Are Emergency Service Nurses Qualified To Give Answers?, Constance M. Boskin

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract not included]

The Effect Of Dextrose Ingestion On Cardiovascular Endurance, Judith M. Axford

Loma Linda University Electronic Theses, Dissertations & Projects

This study was designed to investigate the effectiveness of dextrose on cardiovascular endurance. The subjects were nineteen male students enrolled at Loma Linda University in Riverside, California. The subjects were exercised to their maximum while being tested on the treadmill.· Subjects were each tested twice. Thirty minutes before exercising, they ingested one hundred grams of dextrose for one test and ten ounces of sugar-free Kool-aid for the second test. The difference in exhaustion times was then recorded.

The data indicated that dextrose ingestion decreased exhaustion time on the treadmill. Subjects were able to exercise for a longer period of time …

Distribution And Proportion Of Immunoreactive Neuron Specific Enoclase Containing Cells In The Rat Pineal Gland, Alfonso Miranda C.

Loma Linda University Electronic Theses, Dissertations & Projects

The distribution and proportion of cytoplasm containing immunoreactive neuron specific enolase (NSE) in the rat pineal have been investigated. Step serial sections of the pineal glands of 7 male Sprague-Dawley rats were stained for NSE using an indirect immunoperoxidase method. The volumes of the pineals and of the regions containing reactive cells were derived from the distance between sections and the sum of the corresponding sectional areas of camera lucida drawings. The proportion of the NSE areas actually consisting of NSE reactive cytoplasm was measured using an image array processor.

Cytoplasm reactive for NSE was consistently localized to the posterior …

The Zinc Status Of Pregnant Vegetarian Women, Michelle J. Abu-Assal

Loma Linda University Electronic Theses, Dissertations & Projects

The zinc status of twelve lacto-ovo-vegetariah pregnant women and seventeen non-vegetarian pregnant women was evaluated. Zinc intakes were calculated from three-day dietary records and twenty-four hour dietary histories. Plasma zinc levels were drawn during the last trimester of pregnancy and approximately ten weeks postpartum. Gestational age at birth, birthweight, and APGAR scores of the infants born were obtained from the medical charts. Dietary zinc intakes for the vegetarians (10.5 ± 4.0 mg) did not differ significantly from the intakes of the non-vegetarians (10.9 ± 3.0 mg). The vegetarian last trimester plasma zinc levels (47.9 ± 12.4 mcg/dl) and postpartum plasma …

Autoregulation Of Cortical Blood Flow In Response To Phenylephrine Induced Hypertension In The Normocapnic And Hypercapnic Cat, Forrest Ritland

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this research was to determine the degree of autoregulation of cortical blood flow in the cat, and to evaluate the usefulness of the heated thermocouple technique for measurement of local cortical blood flow. We determined the relationship between local flow and voltage output from our thermoelectric flow probe by in vitro experiments with an artificial kidney. We measured local cortical blood flow in 17 cats during episodes of phenylephrine-induced hypertension, under conditions of normocapnia and, in some cases, hypercapnia. Arterial blood pressure and voltage output from the flow probe thermocouples were recorded continuously with a Physiograph-six monitor. …

An Evaluation Of 17-4 Precipitation-Hardenable Stainless Steel Alloy For Use As An Orthodontic Wire, Martin G. Martz

Loma Linda University Electronic Theses, Dissertations & Projects

17-4 precipitation-hardenable stainless steel, a high strength alloy developed for aircraft applications, has been examined for possible use in orthodontics. The effects of solution treatment, various refrigeration treatments, and various aging treatments on standard tensile properties were measured. Comparisons were made with the tensile properties of 18-8 stainless steel and a Co-Cr alloy presently used in orthodontics.

Solution treatment was found to decrease ultimate strength by 37.8%, 0.2% yield strength by 45.9%, and (YS)/E ratio by 36.7%, while having almost no effect on elastic modulus or percentage elongation. Refrigeration treatments had statistically significant but small effects on tensile properties. Aging …

Cost-Benefit Analysis Of Computer Systems In Community Hospital Food Service, Beverly Kittle

Loma Linda University Electronic Theses, Dissertations & Projects

Cost containment has always been a major concern to managers. Therefore, any system which decreases costs by reducing labor time is given serious evaluation.

A five week comparison was made between financial record keeping by the manual method and by the computerized method. A continuous time study was utilized to make this comparison.

Over the five weeks, an average overall time savings of 245 minutes for the computerized versus the manual method was observed. The net savings to the institution was 223 minutes per week which translates to approximately $140.00 per month over a 5 year period.

The rapid payback …

Signs And Symptoms Of Infection In Newborn Infants With And Without Sibling Visits, Marilyn Thunquest

Loma Linda University Electronic Theses, Dissertations & Projects

[No Abstract Included]

Age-Changes Of The Neuronal Component Of Meissner Corpuscles In The Mouse Digital Pad, Roger C. Mathewson

Loma Linda University Electronic Theses, Dissertations & Projects

Silver impregnated sections of mouse digital pads were studied using light microscopy to detect age-related changes of the neuronal component of Meissner corpuscles. Direct microscopic observation, photomicrographs and camera lucida tracing were utilized. From qualitative observation, the corpuscular neurites were found to undergo morphological age-related changes of diameter, tortuosity, varicosity, branching and terminal expansion size. Quantitative examination was made of the number of corpuscles, corpuscular neurites, branching neurites, cross-innervations, terminal neurite expansions, neurite intraepidermal continuations and terminal axonal processes. The number of corpuscles and neurite intraepidermal continuations decreased with age while having significant linear correlation; whereas, branching increased with age …

Effects Of Stress Relief To Decrease Force Loss In Retraction Springs, Richard Earl Dunn

Loma Linda University Electronic Theses, Dissertations & Projects

Orthodontic wire may be heat treated to relieve residual stresses resulting from the formation of bent configurations. This study utilized electronic equipment to detect and record the initial amount of activation force, and the amount of force lost due to the intrinsic properties of the wire. The information was gathered at three hour intervals over fifteen one-week periods. The data were statistically analyzed by a computer to deter mine means and standard deviations. A general linear hypothesis was utilized to test covariants and the main effects.

A total of forty-eight wires were tested. Closed he lix retraction springs fabricated from …

The Copper Status Of Vegetarian And Non-Vegetarian Men, Susan Bruce

Loma Linda University Electronic Theses, Dissertations & Projects

In this study, the copper status of 18 vegetarian and 17 non-vegetarian men were compared. Copper status was assessed by determining red blood cell superoxide dismutase (RBC-SOD) activity and plasma copper. Plasma copper levels were measured by atomic absorption spectroscopy. Plasma cholesterol, triacyclglycerols, HDL cholesterol, LDL cholesterol VLDL cholesterol were also determined. Twenty-four hour recalls and three-day food records were obtained to determine copper, zinc, energy, protein, fat, fiber, saturated fat, oleic acid, linoleic acid and cholesterol intake. Non-vegetarians had a significantly higher plasma cholesterol and LDL cholesterol than vegetarians. They also had a significantly higher cholesterol, saturated fat, percent …