Dental Casting Tape & Periodontal Strips — Asbestos Exposure Crosswalk

What This Equipment Is

A small but well-documented occupational-asbestos category in dentistry: asbestos-bearing dental products used in restorative dental work and dental-lab fabrication. The product family included:

  • Asbestos casting tape — wrapped around dental crown molds during the lost-wax casting process, with asbestos providing dimensional stability against thermal shock when molten gold or alloy was poured into the mold
  • Periodontal asbestos strips — used in periodontal surgery for hemostasis and tissue retraction
  • Dental investment material — asbestos-bearing investment compounds for casting
  • Dental ligature ties — asbestos in some early-era ligature products
  • Dental-chair heat shielding — asbestos millboard around certain dental-chair heating elements

The exposure was distinct from general consumer asbestos products: it was an occupational exposure category for the dental trades. From the 1930s through approximately the late 1970s, asbestos casting tape and investment compounds were standard dental-lab supply items.

Why Dental Asbestos Was an Asbestos Exposure Pathway

Dental-lab technicians working in crown-and-bridge fabrication handled asbestos tape and investment materials daily — wrapping molds, cutting tape, mixing investment compound (the dustiest step), removing cured investment from finished castings (also dusty).

Dentists performing in-office casting work in the era when dentists fabricated their own restorations were similarly exposed.

Dental hygienists and dental assistants were exposed in periodontal-surgery contexts using asbestos strips.

The occupational cohort is small relative to industrial asbestos categories but well documented in dental-occupational-health literature. Dental laboratories serving multiple dental offices had concentrated employee exposure.

Manufacturers Named in Dental-Asbestos Litigation

  • Jelenko — dental-lab supply company (historic dental investment products)
  • Whip Mix — dental-lab supply
  • Various smaller dental-lab supply manufacturers of the era
  • Johns-Manville — asbestos paper and tape supplied for dental applications

Documented Product References

Images sourced from publicly available product-identification reference materials. Inclusion does not constitute a finding of liability against any company.

Trust Funds That May Apply

  • Manville Personal Injury Settlement Trust
  • Smaller dental-supply-related trusts depending on specific named entities

Categories Most Exposed to Dental Asbestos

Dental-laboratory technicians (primary exposed group), dentists practicing in the in-office casting era, dental hygienists and assistants involved in periodontal-surgery contexts, dental-supply distribution workers.

Cross-References

Compiled from publicly filed asbestos litigation, dental-occupational-health literature, and industry-publication histories. Product and company references reflect what has been alleged or documented in publicly filed litigation. This page does not constitute a finding of liability against any company. Not legal advice; consult a licensed attorney about your specific situation.