Nathaniel C. Lawson

ORCID: 0000-0001-9684-2015
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About
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Research Areas
  • Dental materials and restorations
  • Dental Implant Techniques and Outcomes
  • Dental Research and COVID-19
  • Endodontics and Root Canal Treatments
  • Dental Erosion and Treatment
  • Bone Tissue Engineering Materials
  • Temporomandibular Joint Disorders
  • Orthopaedic implants and arthroplasty
  • Dental Radiography and Imaging
  • Additive Manufacturing and 3D Printing Technologies
  • Dental Trauma and Treatments
  • Digital Imaging in Medicine
  • Orthodontics and Dentofacial Orthopedics
  • Advanced materials and composites
  • Periodontal Regeneration and Treatments
  • Dental Education, Practice, Research
  • Nuclear materials and radiation effects
  • Photopolymerization techniques and applications
  • Anatomy and Medical Technology
  • Oral microbiology and periodontitis research
  • Conservation Techniques and Studies
  • HIV/AIDS oral health manifestations
  • Cervical Cancer and HPV Research
  • Medical Education and Admissions
  • Recycled Aggregate Concrete Performance

University of Alabama at Birmingham
2016-2025

University of Alabama
2014-2024

Marquette University
2020

Information Technology Laboratory
2017

John Wiley & Sons (United States)
2017

Hudson Institute
2017

In-Q-Tel
2014

American Association for Dental Research
2014

Nottingham City Hospital
1996

10.1016/j.prosdent.2016.09.022 article EN Journal of Prosthetic Dentistry 2016-12-24

Abstract Objectives To compare the strength and translucency of CAD/CAM zirconia blocks, with traditional high‐speed sintering, to lithium disilicate. Materials Methods Three materials (Katana STML Block, Prettau Anterior, Zpex Smile) were tested either (7 hours) or (18 30 minutes in a SpeedFire furnace) sintering. A disilicate material (IPS e.max CAD) was as reference. Three‐point bend flexural specimens (16 mm × 4 1.2 mm, n = 10) on 14‐mm‐separated supports loaded failure at 1 mm/min....

10.1111/jerd.12524 article EN Journal of Esthetic and Restorative Dentistry 2019-09-13

Abstract Objectives To compare the filler weight percentage (wt%), and resin composition, flexural strength, modulus, hardness of several 3D‐printed resins to direct indirect restorative materials. Materials Methods Four (C&B MFH, Ceramic Crown, OnX, OnX Tough), one milled composite (Lava Ultimate), conventional (Filtek Supreme), ceramic (IPS e.max CAD) were evaluated. Filler wt% was determined by burned ash technique, particle morphology composition analyzed scanning electron microscopy...

10.1111/jerd.13174 article EN Journal of Esthetic and Restorative Dentistry 2023-11-26

To determine if surface treatment and cement selection for traditional 3 mol% yttria partially stabilized zirconia (3Y-PSZ), "translucent" 5 yttria-stabilized (5Y-Z), or lithium disilicate crowns affected their fracture load.Crowns with 0.8 mm uniform thickness (96, n = 8/group) were milled of 3Y-PSZ (Lava Plus), 5Y-Z Esthetic), (e.max CAD) sintered/crystallized. Half the either particle-abraded 30 µm alumina (zirconias) etched 5% hydrofluoric acid (lithium disilicate), other half received...

10.1111/jopr.13088 article EN Journal of Prosthodontics 2019-05-30

Abstract Purpose To determine the best method of cleaning saliva‐contaminated zirconia in preparation for resin bonding. Material and Methods Flat blocks were particle abraded with aluminum oxide divided into eight groups (n = 10). Groups 1 to 4 first treated one coat an MDP primer (Z‐prime Plus) 5 8 left untreated. A thin fresh whole saliva was painted on all specimens (except control, group 1) contact 3 minutes. The then cleaned by rinsing water 20 seconds (groups 2 5), or 35% phosphoric...

10.1111/jopr.12441 article EN Journal of Prosthodontics 2016-02-02

Abstract Objective To evaluate the gloss and stain resistance of several new ceramic‐polymer CAD / CAM blocks Materials Methods Specimens (4 mm) were sectioned from: Enamic (polymer‐infused ceramic), LAVA Ultimate (nano‐ceramic reinforced polymer), e.max (lithium disilicate), P aradigm C (porcelain), MZ 100 (composite). wet polished on a polishing wheel to either 320 grit silicon paper (un‐polished, N = 8) or 2000 carbide papers followed by 0.05 μm alumina slurry (polished, 8). Initial color...

10.1111/jerd.12166 article EN Journal of Esthetic and Restorative Dentistry 2015-06-01

Two 3D-printed crown materials (Crown and Ceramic Crown) were examined to determine the best surface treatment primers for bonding. Discs of two printed mounted with their "intaglio" surfaces untouched. Half specimens from each group sandblasted 50 µm alumina. Then, divided into four groups (n = 10): Gr1-no further treatment; Gr2-one coat silane; Gr3-one universal adhesive; Gr4-one silane, then one adhesive. Bond strength prepared an Ultradent shear bond apparatus using Filtek Supreme...

10.3390/ma18020265 article EN Materials 2025-01-09

To measure and compare the radiopacity values of available computer-aided design/computer-aided manufacturing (CAD/CAM) restorative materials used for fabrication long-term single-tooth indirect restorations. 1 2 mm thick samples (n = 10 per material) were fabricated from different CAD/CAM materials, including glass-matrix (VITA mark II, Empress CAD, VITA Suprinity, Celtra DUO, e.max CAD), polycrystalline (3Y zirconia, Katana HTML Plus), resin-matrix ceramics Enamic, Lava Ultimate, Flexcera...

10.1111/jerd.13464 article EN Journal of Esthetic and Restorative Dentistry 2025-03-24

ABSTRACT Objectives To evaluate the clinical performance and survival of Enamic crowns placed in a prosthodontic dental practice. Methods Thirty‐five patients 45 were included study. At 1‐year recall appointments, restorations examined for survival. 2‐year appointment, all clinically evaluated by an independent evaluator CDA criteria. Kaplan‐Meier method log‐rank test used to compare with resin resin‐modified glass ionomer (RMGI) cements. Results Out that followed, 2 lost follow‐up 1 year 7...

10.1111/jerd.12206 article EN Journal of Esthetic and Restorative Dentistry 2016-05-24

Background: To determine what thickness of 5 mol% yttria zirconia (5Y-Z) translucent crowns cemented with different cements and surface treatments would have equivalent fracture resistance as 3 (3Y-Z) crowns. Methods: The study included 0.8 mm, 1.0 1.2 mm 5Y-Z (Katana UTML) 0.5 3Y-Z HT) controls. were divided among three treatment subgroups (n = 10/subgroup): (1) using RMGIC (Rely X Luting Cement), (2) alumina particle-abraded then luted the same cement, (3) a resin cement (Panavia SA Cement...

10.3390/ma17020365 article EN Materials 2024-01-11
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