Drawing on both academic insight and years of clinical experience, Amir H. Nejat, DDS, MSc, MSD, has developed a restorative philosophy grounded in precision, material science, and predictability. That philosophy is what first led Nejat, a clinician and researcher with a background in dental materials, to Kuraray’s restorative ecosystem.
“What first drew me to Kuraray was their reputation for scientific rigor and consistency,” Nejat explains. “PANAVIA™ has long been recognized as a gold standard in adhesive dentistry, and the chemistry behind their 10-MDP monomer set a benchmark for durable bonding. When KATANA™ Zirconia came onto the scene, I was impressed by its balance of strength and esthetics—something that historically was difficult to achieve in one material.”
Nejat integrates PANAVIA Universal Bond (UBQ2) into most of his indirect restorative cases, from zirconia to lithium disilicate to metal restorations. “I appreciate its versatility and simplicity,” he says. “The universal application protocol saves time without compromising bond strength. I often use it as a primer for both tooth and restorative surfaces, ensuring a seamless and durable interface. Even under challenging clinical conditions—like subgingival margins or limited isolation—I can rely on consistent adhesion.”
PANAVIA, Nejat continues, offers proven long-term durability, particularly on zirconia and metal substrates. “The MDP monomer forms a true chemical bond with the restoration and dentin, which translates into fewer debonds and less postoperative sensitivity.” He adds that the thin film layer and reliable polymerization allow him to achieve precision fit and lasting performance.
Nejat considers the unique multilayer gradient technology of KATANA™ Zirconia as a clinical game changer. “The ability to deliver both high flexural strength and lifelike translucency in a single material has changed the way I approach full-contour restorations,” he notes. “Its natural optical transition mimics enamel and dentin beautifully, allowing me to reduce the need for extensive staining or layering.”
Clinically, PANAVIA and KATANA complement each other seamlessly. “They’re an ideal pairing—KATANA provides the strength and esthetic foundation, while PANAVIA ensures that the restoration stays securely bonded for the long term,” Nejat says. “The chemistry between the MDP in PANAVIA and the zirconia structure of KATANA creates a chemical synergy that optimizes retention and marginal integrity.”
Nejat recalls a recent full-mouth rehabilitation case on a patient who was a heavy bruxer with severe enamel loss. Using KATANA™ Zirconia restorations bonded with PANAVIA V5, he reports: “Even after 3 years of follow-up, the restorations remain intact with excellent marginal adaptation and no debonding.”
Efficiency gains are also notable. “Both PANAVIA and KATANA have streamlined my workflow significantly,” Nejat attests. “The universal bonding protocol and simplified cementation steps reduce chairtime and eliminate confusion for my team.”
For Nejat, the integration of KATANA and PANAVIA provides “a cohesive, predictable restorative system that delivers consistent results.”
Amir H. Nejat,
DDS, MSc, MSD
Associate Professor of Prosthodontics, Louisiana State University School of Dentistry, and part-time Private Practice limited to Prosthodontics in the Dental Faculty Practice clinic
“KATANA™ Zirconia provides the strength and esthetic foundation, while PANAVIA™ ensures that the restoration stays securely bonded for the long term,” Nejat says.
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