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Loma Linda University Dentistry - Volume 23, Number 2, Loma Linda University School Of Dentistry, Mathew T. Kattadiyil, Charles J. Goodacre

Articulator (Dentistry)

Contents:

9 | Gathering of Alumni 2012
14 | Joni Stephens Retires
16 | CAD/CAM Technology
26 | Student Research Awards
30 | Commencement Number 56
48 | Donor Appreciation
58 | Recently Departed

Effectiveness Of Resin Infiltration And Mi Paste Cpp-Acp In Masking White Spot Lesions, Melissa Wu Bailey

Loma Linda University Electronic Theses, Dissertations & Projects

The development of decalcification around orthodontic brackets and bands, commonly called white spot lesions (WSLs), is often observed in patients with poor oral hygiene during treatment (Behnan et al., 2010, Rodgers et al., 2010). In many instances, these WSLs continue to be visible after the removal of fixed appliances and after natural remineralization. The purpose of this in vitro study was to compare the effectiveness of two treatment modalities, resin infiltration (RI) and Casein Phosphopeptide Amorphous Calcium Phosphate (CPP-ACP), at improving the light reflectivity and thus the appearance of WSLs using spectrophotometric analysis. Sixty extracted human third molars were partially …

Accuracy Of Ortho Insight 3d Digital Scanner In Mesial-Distal Tooth Measurements, Andrew A. Ferris

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Digital scanners and software may be used to measure mesial-distal (MD) tooth width for orthodontic diagnosis and treatment planning. Although there have been many studies performed on different digital scanners, accuracy of mesial-distal tooth measurements using the Ortho Insight 3D scanner and its software (Motionview Software LLC) has not been reported. Purpose: The objective of this study was to determine if the MD tooth measurements from the digital models scanned by Ortho Insight 3D are accurate compared to the measurements taken directly from the teeth and models with a digital caliper. Material and Methods: Individual MD tooth measurements were …

Dental And Buccal Bone Stability After Rapid Maxillary Expansion And Fixed Orthodontic Treatment, Allison Milliner

Loma Linda University Electronic Theses, Dissertations & Projects

The objective of this study was to quantitatively evaluate, via CBCT, the dental and osseous effects of patients who had completed comprehensive orthodontic treatment with rapid maxillary expansion (RME) in conjunction with Ricketts prescription brackets. Thirty consecutive patients (16 males, 14 females; mean age = 13.9  1.9 years) who required RME as part of their orthodontic treatment and had pre-RME (T1), post-RME (T2) and final orthodontic (T3) CBCT images were included in the study. Thirteen patients had 2-banded, while 17 had 4-banded appliances. Measurements of interdental distance (ID), interdental angle (IA), buccal bone thickness (BBT) and buccal marginal bone …

Evaluation Of Apical, Coronal And Occlusal Form Diffrences With Conventional Orthodontic Treatment, Tamar Sardarian

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Cone-beam computed tomography (CBCT) can be used to accurately identify dental landmarks in order to detect changes in dental arch forms. Purpose: The objective of this study was to determine how apical, coronal and occlusal arch forms change following orthodontic treatment with fixed appliances and to establish a base for future studies. Material and Methods: Maxillary and mandibular apical, coronal and occlusal landmarks of 27 subjects were selected on their respective CBCT images at two time points: pre-orthodontic treatment (T1) and post-orthodontic treatment (T2). Comparisons were made between the two time points to evaluate how each arch form changed …

Mechanical Evaluation Of Mandibular Defects Restored With Rhbmp-2: A Finite Element Model, Jelson Yalung

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: The utilization of recombinant human Bone Morphogenetic Protein-2 (rh- BMP2) to form new bone has been shown to be a promising alternative to autogenous bone grafts. Understanding the biomechanical properties of rhBMP-2 restored mandibular defects would provide useful knowledge in the future success of orthopedic and dental treatment in patients who have had restoration of mandibular defects with rhBMP-2. The aim of the study was to evaluate and compare the biomechanical characteristics of rhBMP-2 regenerated bone in mandibular defects using 2 different concentrations of rhBMP-2 with a given carrier in non-human primates Material and Methods: Critical-sized defects (approximately 2.5 …

Influence Of Outdoor Air Quality On Maxillofacial Growth And Development, Ryan Rudd

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Mild to moderate deviations from normal facial types can significantly change orthodontic treatment modalities. Studies linking ambient air pollution with respiratory problems, as well as craniofacial morphology with respiratory problems are well established.1-19 In this study we aimed to determine if there was a correlation between ambient air pollution and maxillofacial growth and development. We also wanted to determine if further research should be done in this area, and if so how can the study be improved. Materials and Methods: We selected Santa Maria, CA and Upland, CA as sample areas due to their significant differences in air quality. …

Analysis Of Periapical Biopsies Submitted For Histopathological Evaluation: A Retrospective Study, Abdullah I. Alqaied

Master's Theses

Apical periodontitis is the most common pathological process in the periapical region. Disciplined clinical and radiographic evaluations and appropriate diagnostic tests can detect lesions related to apical periodontitis. Aside from this, lesions mimicking pulp-related pathology but unrelated to pulpal infection and necrosis are occasionally discovered in the periapical region. The objective of this study was two-fold: (1) to determine the prevalence of diverse periapically located pathological entities, and (2) to apply that information to evaluate the rationale for routine submission of surgically obtained tissue for histological examination and diagnosis. Methods: A 5-year retrospective analysis of pathology reports from the UCONN …

Commencement Program 2012, Loma Linda University

Commencement Programs

CONTENTS

1 | Message from the President

3 | 2012 Events of Commencement

5 | The Academic Procession

7 | Significance of Academic Regalia

9 The Good Samaritan

10 | University History Highlights

12 | Loma Linda University Song - "Healing Love"

13 | The Speakers

24 | The University Honorees

36 | The School Honorees

54 | The Program

• School of Medicine, 55
• School of Pharmacy, 72
• School of Dentistry, 79
• School of Science and Technology/School of Behavioral Health and School of Religion, 97
• School of Nursing, 109
• School of Allied Health Professions - Physical Therapy, 117
• School of …

Remarkable Resilience Of Teeth (How Are Teeth So Brittle Yet So Resilient), Paul J. Constantino

Biological Sciences Faculty Research

Tooth enamel is inherently weak, with fracture toughness comparable with glass, yet it is remarkably resilient, surviving millions of functional contacts over a lifetime. We propose a microstructural mechanism of damage resistance, based on observations from ex situ loading of human and sea otter molars (teeth with strikingly similar structural features). Section views of the enamel implicate tufts, hypomineralized crack-like defects at the enamel–dentin junction, as primary fracture sources. We report a stabilization in the evolution of these defects, by ‘‘stress shielding’’ from neighbors, by inhibition of ensuing crack extension from prism interweaving (decussation), and by self-healing. These factors, coupled …