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Dynamic Smile Analysis : Changes With Age, Shyam G. Desai
Dynamic Smile Analysis : Changes With Age, Shyam G. Desai
SoDM Masters Theses
Introduction: The objective of this study was to define age-related changes in the human smile. The areas of interest were: upper lip length at smile and repose, upper lip thickness at smile and repose, maxillary incisal display at smile, interlabial gap height at smile, smile index, percent buccal corridors, intercommissural width at rest, smile height, and smile arc. A secondary objective was to study the perioral changes from rest to smile and compare them on the basis of age.
Materials and Method: Video equipment was used to capture video for 261 subjects. Two frames for each subject were selected; one …
Characterization Of Chemical And Biological Properties Of Purified Porphyromonas Gingivalis Free Dihydroceramides, Andrew Robert Chapokas
Characterization Of Chemical And Biological Properties Of Purified Porphyromonas Gingivalis Free Dihydroceramides, Andrew Robert Chapokas
SoDM Masters Theses
The aim of the present investigation is to purify, characterize, and determine the chemical and biological properties of Porphyromonas gingivalis free dihydroceramides (fDHC). Effects were tested by examination of human gingival fibroblast morphologic changes in addition to their synthesis of prostaglandin E2 (PGE2) and prostaglandin F2α (PGF2&#;) produced in vitro. Free dihydroceramides as well as phosphoglycerol dihydroceramide (PGDHC), and de-esterified phosphoglycerol dihydroceramide (PGDHC-C15:0) were obtained by total lipid extraction of P. gingivalis followed by high performance liquid chromatography (HPLC). Confirmation and structural analysis was obtained by electrospray mass spectrometry (ES-/+MS) and nuclear magnetic resonance spectroscopy (NMR). A synthetic free dihydroceramide …
Characterization Of Structural Changes In The Subchondral Bone And Fibrocartilage From A Mouse Model Of Temporomandibular Joint Osteoarthritis, Tina Rattan Gupta
Characterization Of Structural Changes In The Subchondral Bone And Fibrocartilage From A Mouse Model Of Temporomandibular Joint Osteoarthritis, Tina Rattan Gupta
SoDM Masters Theses
No abstract provided.
Permeability Alterations Of Bio-Silicified Treated Human Dentin: An In Vitro Study, Takashi Komabayashi
Permeability Alterations Of Bio-Silicified Treated Human Dentin: An In Vitro Study, Takashi Komabayashi
SoDM Masters Theses
No abstract provided.
First Order Archwire Deflections: Comparing Conventional, Active Self-Ligating And Passive Self-Ligating Mechanisms, Michael B. Holbert
First Order Archwire Deflections: Comparing Conventional, Active Self-Ligating And Passive Self-Ligating Mechanisms, Michael B. Holbert
SoDM Masters Theses
Our aim in this study was to compare conventional, active self-ligating and passive self-ligating mechanisms using first order archwire deflections. A cantilever and three point bend model were used to assess degree of bracket play, deactivation force, and superelastic range. Methods: We studied five different bracket types: victoryTM( 3M-Unitek, St. Paul, MN), smartClipTM( 3M-Unitek, St. Paul, MN), Damon hYTM( ~ rmc oG, lendora, CA), CarriereTM( Ortho Organizers, Carlsbad, CA) and In- Ovation R~~ (GAC Intl., Bohemia, NY). These brackets were tested with round superelastic nickel titanium wires varying in diameter: 0.014", 0.016", 0.018" and 0.020" (Ultimate Wireforms Inc., Bristol, CT). …