Analytical, Diagnostic and Therapeutic Techniques and Equipment Commons^™

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 …

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 …

Xeroradiography & Conventional Radiography : Comparative Imaging Of The Temporomandibular Joint, Nelson R. Gatov

Loma Linda University Electronic Theses, Dissertations & Projects

An investigation was conducted to evaluate the application of Xeroradiography for imaging the Temporomandibular Joint using the Updegrave and Weinberg positioning boards and to compare these images to those obtained by conventional radiography using the same positioning boards.

A cadaver head in which three spherical radiopaque implants had been placed was used in this study. A General Electric Model 1000 (Dental Unit) was the source of radiation. The conventional radiographs were produced on Dupont Cronex 2DC film and processed by a Phillips 810 automatic processed by a Xerox "125 System".

MAGNIFICATION

A comparison of the implant sphere diameters and the …

Relationship Between Some Demographic Characteristics And Adverse Reactions Experienced By Women Undergoing A Therapeutic Abortion While Awake, Karen K. House

Loma Linda University Electronic Theses, Dissertations & Projects

With the liberalization of abortion laws by the Supreme Court in 1973, American women have been able to obtain therapeutic abortions in hospitals and out-patient clinics in ever increasing numbers. With the increased number of women seeking abortions the medical field has responded with abortion procedures that are safe and relatively quick. With the speed doctors use to perform the procedure, many women may wish to take advantage of the medically safer method of abortion under local anesthesia. However, some women are unable to withstand the psychological and physical stress associated with a therapeutic abortion while awake. It would be …

Cephalometric Objectives For The Maxillary Central Incisor, John Mickey Damerell

Loma Linda University Electronic Theses, Dissertations & Projects

A cephalometric study was conducted to determine the ideal inclination of the maxillary central incisor for various facial patterns. Selected measurements were made on lateral headplate tracings of three samples: ideal, random and Class III malocclusions. Statistical analysis of data included means, standard deviations, simple correlations and stepwise regressions.

The Frankfort plane was found to be the most reliable reference plane when measuring the inclination of the maxillary central incisor. The maxillary central incisor inclination was found to be dependent upon the lower incisor position and inclination, chin position and the anterior cranial base inclination. A formula was produced to …

A Comparison Of Overbite Relapse To Age, Interincisal Angle And Lower Face Height In Class Ii Deepbite Cases, James E. Macalpine

Loma Linda University Electronic Theses, Dissertations & Projects

Patients with deep skeletal or dental bites before treatment have been noted to have a greater tendency towards relapsing to this deepbite following orthodontic treatment than do patients whose malocclusion showed a more ideal overbite relationship before treatment.

This study utilized patients selected from Rocky Mountain Data Systems for their deepbite trends. Three areas were compared to overbite relapse, 1) age, 2) interincisal angle 3) lower face height.

Results of this study indicate that overbite cases that have the most problems in retention were skeletal deepbites. This study also indicates that there was no disadvantage to early treatment, that the …

Evaluation Of A Precision Filing Test For Predicting Dental Technic Performance, Douglass Roberts

Loma Linda University Electronic Theses, Dissertations & Projects

A precision filing test involving the reduction of a steel cylinder to a perfect cube with the use of a hand file and bench vise was devised as a diagnostic tool for the early detection of freshman students having technic difficulties. The test was administered to 188 freshman dental students in three classes at Loma Linda University, School of Dentistry. Subjective and objective scores were then statistically compared with subsequent technic and clinic grades of the students. The simple linear correlations between the predictor test variable and criterion grades were statistically significant for one class and for the combined classes …

The Prediction Of Circumferential Tooth Measurements As An Aid In Orthodontic Banding, Roland D. W. Neufeld

Loma Linda University Electronic Theses, Dissertations & Projects

A correlation was established among the circumferential measurements of the teeth in a given individual. The maxillary central incisor was selected as the predictor tooth to predict the remaining teeth in the set. The circumferences of the teeth were predicted within + two band sizes 69% of the time. Agreement in prediction percentages was found using measurements taken intraorally.

Growth Augmentation With Activators, John R. Sibley

Loma Linda University Electronic Theses, Dissertations & Projects

This research was performed to determine if bony changes could be effected by activator treatment and how stable this treatment is.

From a sample of twenty-seven cases with before activator treatment cephalometric radiographs. Rocky Mountain Data Systems provided growth projections, with and without edgewise treatment, for the period of time each patient was in treatment. These forecasts were compared to the post-treatment cephalograms to analyze the orthopedic effects of activator treatment with normal growth and with edgewise therapy.

Nine of the twenty-seven case treated sample responded to recall for post-treatment cephalograms and were analyzed for relapse.

It was apparent that …

A Cephalometric Study Of Post-Retention Relapse In Mandibular Expansion Of Cuspids And Molars, Randall J. Schuler

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this research was to determine if the advancements of cephalometrics and the capacity of the computer to quantify skeletal relationships could help the orthodontist recognize those cases where arch length could be gained through buccal expansion with little risk of relapse. To determine the stability of orthodontic treatment changes, the mandibular arches of 72 patients were studied. The cases were treated by Drs. Bench and Ricketts and were selected on the basis that each case must include three complete sets of frontal and lateral headplates, before and after treatment, and a minimum of two years out of …

The Effect Of Diet On Neutrophilic Phagocytosis, Linda L. Hoover

Loma Linda University Electronic Theses, Dissertations & Projects

Two series of experiments were conducted in order to determine the effects of diet on neutrophilic phagocytosis. The first series was designed to determine the effects of varying amounts of oral glucose on phagocytosis. Blood samples from 6 to 8 subjects were drawn at fasting, and at various time periods following ingestion of 12.5, 25, 50, 75, and 100 grams of glucose. In the second series of experiments, blood samples were taken from 11 subjects after an overnight fast and 2 hours following ingestion of one of 4 different liquid diets, which included the following: the meal (I), consisting of …

The Development Of A Means Of Applying Extraoral Pressure To The Buccal Arch Positioner, David C. Hobson

Loma Linda University Electronic Theses, Dissertations & Projects

A problem common to all of the full-banded orthodontic techniques currently in use is the delivery of an optimum force to each tooth without disrupting the forces on other teeth. This problem becomes especially acute during finishing. It arises out of Newton's third law, which states that for every action, there is an equal and opposite reaction. Thus, in full-banded techniques, a force on one tooth gives rise to generally undesirable reactive forces on other teeth in its vicinity.

The theory behind the buccal arch positioner (BAP) is dissipation of the force on any one tooth over every other tooth …

A Cephalometric Study Of Mandibulo-Facial Disostosis In Monozygotic Twins Using Computerized Methods, Lyn M. Lamberton

Loma Linda University Electronic Theses, Dissertations & Projects

An investigation using computerized cephalometrics has been conducted to consider the cephalometric factors responsible for the characteristic appearance evident in individuals afflicted with Mandibulo-Facial Dysostosis. A pair of Negro monozygotic affected twins were studied using the other 10 non-affected members of the family as a control to minimize the environmental and hereditary factors. The Rocky Mountain Data System was utilized to analyze the lateral and frontal cephalometric radiographs of each individual using Ricketts Analysis and the data were subjected to statistical tests to determine the factors contributory to the syndrome. Age and size were considered and adjustments were made to …

Cephalometric Norms For The Mexican Population Using The Ricketts, Steinar, And Tweed Analyses, Eduardo A. Velarde

Loma Linda University Electronic Theses, Dissertations & Projects

In order to investigate the characteristics of the facial complex of the Mexican and to compare them with the Caucasian, a sample of 40 subjects, 31 males and nine females, of Latin American origin from Chihuahua, Chihuahua, Mexico, with a mean age of 16.6 years, were selected for this study. The criteria for selection were visual and only individuals with clinical normal, Angle Class I occlusion were chosen.

Lateral head Roentgenograms were obtained and cephalometric evaluation of the Skeletal and Dental Pattern was carried out using the Ricketts, Steiner, and Tweed Analyses.

The mean values for the Mexican were compared …

Cephalometrics For The Oral Surgeon In The Diagnosis Of Facial Deformities, Frederick J. Mantz

Loma Linda University Electronic Theses, Dissertations & Projects

Surgical orthodontics presents a challenge to the oral surgeon. By the nature of the oral surgeon's training and discipline he should be the one best qualified to treat the surgical aspect of the surgical orthodontic case. The establishment of a proper diagnosis and means of communication between the oral surgeon and orthodontist are essential in achieving a good final result for the surgically treated case. Fortunately, a scientific method of diagnosis is available that can provide both specialties with a common language. Computerized cephalometric analysis can provide the diagnosis and link of communication for the discussion of goals and treatment. …

Selected Physiological Responses To A Back Rub, Norma (Ewing) Anderson

Loma Linda University Electronic Theses, Dissertations & Projects

The back rub, which has been an established part of evening patient care for many years, is given to promote relaxation and sleep as well as to promote skin care. Yet its place in modern nursing seems questionable. Today's nurse is less willing to practice using empirically established procedures.

There have been few investigations showing the effect of massage to the back and no studies have shown that a brief back rub, as given by nurses, promotes relaxation. In cardiovascular nursing there is some controversy as to whether or not the back rub causes stimulation to the cardiovascular system that …

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 …

Modifications, Adaptations, And Clinical Observations On The Buccal Arch Positioner, Bill J. Miller

Loma Linda University Electronic Theses, Dissertations & Projects

Buccal arch positioners (BAP) were constructed for four orthodontic patients banded with edgewise brackets, which were clinically observed during the finishing stages of treatment. At 2-4 week intervals data were collected on oral hygiene, tissue tolerance, magnitude and duration of soreness, and ease of appliance insertion and adjustments.

During the construction of the BAP, an ideal set up was found to be necessary for construction of the flexible components. It had the final location of each tooth visible so the investigator could work towards that goal.

Heat treatment of the rigid component was done to remove the cold working stress …

Clinical Photographic Analysis Of Dentofacial Midline Asymmetries, Larry A. Okmin

Loma Linda University Electronic Theses, Dissertations & Projects

Clinical diagnosis of dentofacial midline asymmetries has been difficult because of the problems in locating a reliable median sagittal reference plane, and because of the complexity and time involved in analysis. For these reasons, the clinician has generally resorted to direct visual observation in diagnosing midline discrepancies. A quick, precise, chairside method of dentofacial midline analysis would be of benefit to the orthodontist.

This study presented a clinical photographic method of dentofacial midline analysis and compared its precision with that of direct observation. The photographic method employed an Orthoscan Polaroid intraoral camera (Unitek) with a positioning device used to relate …

Kinesiology Of Knee Flexion Deformity Using Electromyography, Paul J. Roby

Loma Linda University Electronic Theses, Dissertations & Projects

A kinesiological electromyographic study was completed to determine the relative changes in muscle activity as a person walks and stands with different degrees of knee flexion deformity. The ultimate aim was to establish criteria for appropriate preventive and corrective measures relating to knee flexion deformity.

Six different muscles were implanted with wire electrodes. The subjects performed a series of walking and standing experiments with the knee flexed at selected angles by a locking leg brace to simulate knee flexion deformity. The electromyographic action potentials were monitored by analog tapes, oscilloscopes and closed circuit television. The analog tapes were displayed on …

Patient Preference In Two Types Of Colostomy Irrigations, Mildred Ann Marks

Loma Linda University Electronic Theses, Dissertations & Projects

The purposes of this study were threefold: (1) to find which method of colostomy irrigation (enema bag vs. bulb syringe) was best accepted by colostomy patients; (2) to functionally evaluate the two types of colostomy irrigation methods; and (3) to report the results of this study to medical personnel interested in advancements for colostomy irrigations. The population in this study consisted of colostomy patients who had irrigated on a regular basis with the bag technique for a minimum of six months. Twelve colostomates completed this study by recording the parameter of time, amount of irrigation fluid used, quality of return, …

Value Of Oxygen With Innovar And Methohexital For Outpatient Oral Surgery, Andrew D. Harsany

Loma Linda University Electronic Theses, Dissertations & Projects

This paper demonstrates the value of oxygen in maintaining arterial blood gas in an adequate range during outpatient oral surgery. Dental extractions were completed on ten patients under an anesthetic technique utilizing Innovar and methohexital with supplemental nasal oxygen. Blood gas samples were drawn at five stages during the procedure.

The mean of the PaO₂ samples drawn with the patient at the point of deepest sedation was approximately three times the normal value.

Oxygen for pulmonary ventilation provides a reservoir in the lungs, saturation of hemoglobin, and increased oxygen in the plasma which provides a margin of safety if …

Endodontic Sealing Properties Of Cavit, Chloro-Rosin Gutta Percha, N2, And Silver Cones Using Radioisotopes, Frank H. Beal

Loma Linda University Electronic Theses, Dissertations & Projects

The main purpose of this investigation was to test the endodontic sealing abilities of silver cones, N2, warm gutta percha, chemically softened gutta percha, laterally condensed gutta percha and Cavit under carefully controlled conditions. Evaluations were done by radiographic, macroscopic, microscopic, and autoradiographic examinations.

The four points which must be considered when evaluating the efficacy of sealing root canal systems, in vivo, were presented and discussed.

Cavit as a total endodontic filling material was presented, investigated and discussed.

An improvement of the chloro-rosin - gutta percha diffusion technique was presented.

The concept of surface as well as marginal leakage was …

A Clinical Comparison Of Six Orthodontic Techniques, Erik H. Madsen

Loma Linda University Electronic Theses, Dissertations & Projects

Controversy exists concerning the relative superiority of various orthodontic techniques because of the difficulties encountered in making comparative clinical studies of these techniques which are scientific and statistically meaningful. The purpose of this study was to clinically compare six different orthodontic techniques which are currently being taught, relative to a number of criteria, and to do it in a scientifically significant manner.

In order to eliminate as many of the irrelevant variables as possible, the patients were required to pass a relatively stringent screening to participate. Among other things, the patients had to have first molars in Class I relation …

Selected Factors Related To Ability To Regain Bladder Function Following Indwelling Catheterization, Jongkolnee Padmasiri

Loma Linda University Electronic Theses, Dissertations & Projects

This exploratory retrospective study was designed to evaluate selected factors, including the ability to regain bladder function related to post indwelling urethral catheterization in an acute general hospital population.

The records of 107 patients who met the study criteria became the study population. These patients had three-way urethral catheters, continuous antibacterial irrigation and closed drainage system. Twenty patients died (19 percent) before the catheter was removed. Of the 87 patients who were alive, 37 percent (32 patients) had in-adequate bladder function. Of these 32 patients, no attempt was made to remove the catheter from 15 prior to their hospital discharge. …

A Clinical Study Of Cuspid And Incisor Retraction Using A Simplified Long Acting Edgewise Technique, James M. Prichard

Loma Linda University Electronic Theses, Dissertations & Projects

Six patients were treated by means of a simplified edgewise technique. The rate of the cuspid retraction and molar movement was measured and difficulty of appliance, adjustment, length of appointments, severity and duration of pain, and root resorption were assessed. The technique of treatment is described and evaluated relative to these criteria. The measurements were made utilizing a unique intra-oral camera and a measuring device designed for the study.

It was found that approximately 44.4 percent of the extraction space was closed by anterior movement of the molar and 55.6 percent was closed by distal movement of the cuspid. The …

A Clinical Evaluation Of The Light Progressive Technique During Cuspid And Anterior Retraction, Gary R. Keszler

Loma Linda University Electronic Theses, Dissertations & Projects

This study was conducted to clinically evaluate cuspid and anterior retraction in first bicuspid extraction cases using the Light Progressive Technique. More specifically interest was centered on rate of cuspid and anterior retraction, anchorage preservation or control, difficulty of appliance adjustments, time involved in adjustments, frequency of adjustments, total retraction time, patient discomfort, root resorption, as well as a complete cephalometric appraisal. Seven patients were treated for ten months. The appliance was activated at three week intervals, and progress recorded monthly.

It was shown that this technique maintains molar anchorage during rapid cuspid retraction without relying on patient cooperation for …

A Clinical Evaluation Of A Technique Utilizing Plastic Modules For Cuspid And Incisor Retraction, Dwane I. Johnston

Loma Linda University Electronic Theses, Dissertations & Projects

In a clinical study, polyurethane-type plastic modules were evaluated for use in retracting cuspids and incisors in Class I extraction cases.

Seven patients were selected to be treated with a technique utilizing these plastic modules. All cases were in Class I molar relationship and were either bimaxillary, protrusive or had tooth-size, arch-length discrepancies.

Evaluation was based on rate of cuspid and incisor retraction and the control of molar anchorage during the retraction phase.

At four-week intervals data were collected on space closure. At the same time, such subjective data as amount and duration of pain, difficulty of appliance adjustment and …

An Evaluation Of Cuspid And Anterior Retraction Using Burstone Mechanics In First Bicuspid Extraction Cases, George Rodney Heath

Loma Linda University Electronic Theses, Dissertations & Projects

This study was conducted to clinically evaluate cuspid and anterior retraction in first bicuspid extraction cases using the Burstone segmented arch technique. More specifically interest was centered on rate of cuspid and anterior retraction, anchorage preservation or control, difficulty of appliance adjustments, time involved and frequency of adjustments, total retraction time, patient discomfort, root resorption, as well as a complete cephalometric appraisal. Six patients were treated for seven months with measurements and records taken to asses (sic) the above desired information.

The results of the patients undergoing lower cuspid retraction showed a mean percentage of 26.0% for the molars and …

A Clinical Study Of Cuspid And Incisor Retraction Using The Mechanics Of Charles H. Tweed, Eugene R. Humphries

Loma Linda University Electronic Theses, Dissertations & Projects

A controlled clinical study of cuspid and incisor retraction using the mechanics advocated by Charles H. Tweed on class I four first bicuspid extraction cases was conducted. A carefully restricted sample of seven patients, three boys and four girls, was treated by seven graduate orthodontic students at Loma Linda University.

Measurements were made at monthly intervals to assess cuspid, incisor, and molar movements. Data were collected at each appliance adjustment to evaluate pain, difficulty, length of appointment, and the observations and impressions of each clinician regarding the technique.

The mean rates of cuspid movement during the cuspid retraction phase of …