The DCG Office of Research, in collaboration with the American Student Dental Association, presents Research and Table Clinic Day (RTCD) to promote scientific research and innovative clinical care with a focus on current practices and projects being conducted at the Dental College of Georgia. Please see the DCG's website for RTCD current events and information:

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Recent Submissions

  • Surgical Management of the Nasopalatine Canal

    Brockway, Daniel; Restorative Sciences (2020-02)
    The nasopalatine canal can pose an obstacle when placing implants in the anterior maxilla and is the most common site for non-odontogenic cysts. This clinical topic sought to present two clinical cases involving surgical techniques involving this important anatomical canal space.
  • Hand Fatigue Differences Between Air-Driven and Electric Handpieces

    Sananez, Andreina; Robles-Moreno, Marlen; Mettenburg, Don; Rueggeberg, Fred; Restorative Sciences (2020-02)
    To compare “hand fatigue” between use of air-turbine and electric handpieces following preparation of a full coverage crown
  • Effect of Print Angulation on Dimensional Reproducibility of 3D-Printed Models

    Rueggeberg, Fred; Brenes, Christian; Fantaski, Lincoln; Mettenburg, Don; Restorative Sciences; General Dentistry (2020-02)
    To measure/compare dimensions of 3D-printed models made from the same STL file and fabricated using a variety of printer/resin types at different angulations.
  • Impact on Dental Schools of Providing Interpretation/Translation Services

    Milano, Michael; PEDO (2020-02)
    To determine the impact of providing interpretation/translation services for patients with limited English proficiency (LEP) on a dental school’s finances and patient care efficiency.
  • Inflammation and Carcinogenesis Are Enhanced in a Modified 4-Nitroquinolone 1-Oxide and Ethanol Animal Model

    Kurago, Zoya; Palani, C.; Ramanathapuram, L.; Manicassamy, S.; ORAL DIAGNOSIS (2020-02)
    Chemical carcinogen 4-NQO is widely used in animal studies for induction of squamous carcinoma (SCC) in the upper aerodigestive tract (UADT), as it mimics the effects of smoking tobacco. Typical murine protocols deliver 4-NQO in drinking water alone for several weeks, followed by weeks of observation, with or without addition of ethanol during the follow-up. Important drawbacks of these methods are the long time to generation of tumors (25-35 weeks), as well as sparse mucosal inflammation. Moreover, recent studies indicate that inflammatory pathways regulated by microbial toll-like receptor 2 (TLR2) may contribute to carcinogenesis at mucosal surfaces.
  • ATAD3A plays an oncogenic role in head and neck cancer

    Loveless, Jenni; Lang, Lewei; Jensen, Caleb; Teng, Yong; Dentistry (2020-02)
    With approximately 500,000 new cases diagnosed each year, head and neck squamous cell carcinomas (HNSCC) remain one of the leading causes of cancer related deaths. Thus, there is great interest to identify novel therapeutic targets against HNSCC. In this project, we aim to gain a deeper appreciation of ATAD3A, the ATPase family AAA-domain containing protein3A, and its oncogenic role in HNSCC, as well as its potential as a target in future patient therapies.
  • Effect of Print Angulation on Surface Roughness of 3D-Printed Models

    Tolbert, Tyler; Brenes, Christian; Fantaski, Lincoln; Mettenburg, Don; Rueggeberg, Fred; Dentistry (2020-02)
    To measure/compare surface roughness of 3D-printed models made from the same STL file and fabricated using a variety of printer/resin types at different angulations.
  • Wavelength-Dependent Strength of Photo-activated Resin Veneer Cements

    Okoye, Makua; Britton, Eduardo; Capehart, Kim; Mettenburg, Don; Rueggeberg, Fred; Dentistry (2020-02)
    To evaluate the effects of application of violet or blue light on strength of light-curable-only resin cements.
  • Human Saliva Contact Angles on Three Types of Denture Bases

    Baxter, John; Baxter, Mary; Brenes, Christian; Messer, Regina; Sheen, Goeff; Mettenburg, Don; Rueggeberg, Fred; Denistry (2020-02)
    Contemporary denture base resins are available as 3 types: conventional, heat-processed (CONV), 3D printed (PRINT), or 3D milled (MILLED). This project measured and compared surface contact angle of human saliva to each type denture base, either as-processed (AP) or polished (POL).
  • Tooth Curvature and Enamel Loss/Resin Removal At Bracket Debonding

    Spillers, Jerry; Clayton, Christopher; DeLeon, Eladio; Fortson, Weston; Mettenburg, Don; Rueggeberg, Fred; Dentistry (2020-02)
    To measure and compare in vitro enamel loss and residual resin presence on extracted teeth of differing facial convexities.
  • Testing for Photoinitiator Type in Light-cured Orthodontic Bracket Adhesives

    Janzen, Jackie; Humes, Haylee; DeLeon, Eladio; Fortson, Weston; Mettenburg, Don; Rueggeberg, Fred; Dentistry (2020-02)
    To measure/compare flexural strength of light-cured orthodontic resins when exposed to different wavelength curing light sources.
  • Exposure Duration and Adhesive Cure Uniformity Under a Stainless Steel Bracket

    Patel, Mohit; Moquin, Caitlin; DeLeon, Eladio; Fortson, Weston; Mettenburg, Don; Rueggeberg, Fred; Pre-Dentistry (2020-02)
    Determine the effect of curing light exposure on adhesive paste hardness underneath a simulated stainless steel bracket.
  • UV-VIS Spectral Profiles of Probable Photoinitiators in 3D Dental Resins

    Bowerman, Brielle; Brenes, Christian; Rueggeberg, Fred; Dentistry (2020-02)
    Dental 3D printing resins utilize a different range of wavelengths for photo-activation than those commonly found in visible light-cured, direct dental restorative materials, and thus contain different photoinitiators (PIs). This project sought to provide preliminary identification of PIs present in a wide variety of commercial, 3D photo-printing dental resins.
  • Invasion and Survival of Porphyromonas gingivalis in Human ARPE-19 Cells

    Yuan, Jessie; Swaminathan, Radhika; Cutler, Christopher; Arjunan, Pachiappan; Dentistry (2020-02)
    Age-related macular degeneration (AMD), a leading cause of irreversible vision loss in elderly is associated with several systemic conditions. Recent studies link Periodontal Disease (PD) to AMD. As we demonstrated previously, Porphyromonas gingivalis (Pg),a keystone oral-pathobiont that cause periodontitis, invades blood dendritic and gingival epithelial cells. However, there is no evidence that Pg invades retinal-pigment epithelial (RPE) cells. The primary objective of this study is to test whether Pg and its fimbrial-mutants invade human ARPE-19 cells after infection.
  • Tip-to-Target Distance Effect on Irradiance Delivered by Dental Curing Lights

    Klein, Laura; Rueggeberg, Fred; Dentistry (2020-02)
    Dental light curing units (LCUs) are often evaluated using exitance irradiance values. These values do not predict irradiance levels observed at common working distances. This project categorized LCUs by the tip-to-target distances where exitance irradiance dropped by 50%.
  • Comparison of Bulk Fill composite and effectiveness of use by skill of practitioner.

    Patterson, Zachary; Rueggeberg, Fred; Hampton, Mary Cameron; Babb, Courtney; Arce, Roger; Urbanawiz, David; Dentistry (2020-02)
    To compare the brands Fill-Up and Sonic fill and the efficacy of the peripheral seal alone, as well as to the skill levels of novice and experienced practitioners.
  • Optimizing Bond Strength of RMGI and Conventional Composite

    Villalobos, Vanessa; Pate, Charmi; Mettenburg, Don; Rueggeberg, Fred; Bloomquist, Ryan; Dentistry (2020-02)
    The “sandwich technique” of placing resin modified glass ionomer (RMGI) as the initial restorative material increment, followed by overlaying with light-cured composite, is a common clinical procedure. This project evaluated the effects of RMGI surface abrasion as well as dentin bonding agent components on the shear bond strength (SBS) of composite to RMGI.
  • Resin Infiltration and Contouring for an Esthetic Makeover

    Alverson, Benjamin; Romero, Mario; Capehar, Kim; Dentistry (2020-02)
    Using bleaching, Icon resin infiltration technique and a putty matrix to improve esthetics and contour of anterior teeth with mild fluorosis.
  • Rheumatoid Arthritis and Periodontal Disease

    Wolfe, Hannah; Corley, Morgan; Dental Hygiene (2020-02)
    The objective is to find a correlation between Periodontal Disease and Rheumatoid Arthritis.
  • Quality of Dental Care at Long-Term Care Facilities

    Crittenden, Erika; Lollie, Renisha; Dental Hygiene (2020-02)
    To examine whether direct access to dental hygienists in long-term care facilities would improve the oral health of the residents.

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