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Review Articles

Potential airborne asbestos exposures in dentistry: a comprehensive review and risk assessment

ORCID Icon, , , ORCID Icon, ORCID Icon & ORCID Icon
Pages 301-327 | Received 16 Oct 2020, Accepted 26 Mar 2021, Published online: 01 Jun 2021

References

  • Addison J, McConnell EE. 2008. A review of carcinogenicity studies of asbestos and non-asbestos tremolite and other amphiboles. Regul Toxicol Pharmacol. 52(1 Suppl):S187–S199.
  • Agency for Toxic Substances and Disease Registry [ATSDR]. 2001. Toxicological profile for asbestos. Atlanta (GA): U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry.
  • American Thoracic Society [ATS]. 1990. Health effects of tremolite. This official statement of the American Thoracic Society was adopted by the ATS Board of Directors, June 1990. Am Rev Resp Dis. 142(6 Pt 1):1453–1458.
  • Anderson JN. 1956. Applied dental materials. Oxford: Blackwell Scientific Publishers.
  • Asgarzadeh K, Mahler DB, Peyton FA. 1954. The behavior and measurement of hygroscopic expansion of dental casting investment. J Dent Res. 33(4):519–530.
  • Attanoos RL, Churg A, Galateau-Salle F, Gibbs AR, Roggli VL. 2018. Malignant mesothelioma and its non-asbestos causes. Arch Pathol Lab Med. 142(6):753–760.
  • Baghani Z, Kadkhodazadeh M. 2013. Periodontal dressing: a review article. J Dent Res Dent Clin Dent Prosp. 7(4):183–191.
  • Bakdash MB, Frydman A. 1976. Asbestos in periodontal dressings: a possible health hazard. Quintessence Int Dent Dig. 7(10):61–65.
  • Barrett TE, Pietra GG, Maycock RL, Rossman MD, Minda JM, Johns LW. 1989. Acrylic resin pneumoconiosis: report of a case in a dental student. Am Rev Respir Dis. 139(3):841–843.
  • Berman DW, Crump KS. 2003. Final draft: technical support document for a protocol to assess asbestos-related risk (EPA# 9345.4-06). Washington (DC): U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response.
  • Blair A, Walrath J, Rogot E. 1985. Mortality patterns among U.S. veterans by occupation. I. Cancer. J Natl Cancer Inst. 75(6):1039–1047.
  • Bouchardy C, Schuler G, Minder C, Hotz P, Bousquet A, Levi F, Fisch T, Torhorst J, Raymond L. 2002. Cancer risk by occupation and socioeconomic group among men–a study by the Association of Swiss Cancer Registries. Scand J Work Environ Health. 28(Suppl 1):1–88.
  • Brantley WA, Liu JC, Kos WL, Ziebert GJ. 1986. Evaluation of four substitutes for asbestos in lining casting rings. Oper Dent. 11(1):25–32.
  • Brecker SC. 1961. Crowns; preparation of the teeth and construction of the various types of full coverage restorations. Philadelphia (PA): W. B. Saunders Co.
  • Brennom EF. 1973. Technic for creating disposable inlay rings. Dent Surv. 49(4):40–41.
  • Broomell IN. 1908. Practical dentistry, by practical dentists. Philadelphia (PA): L.D. Caulk Co.
  • Brownson RC, Petitti DB. 2006. Applied epidemiology: theory to practice. 2nd ed. New York (NY): Oxford University Press.
  • Brune D, Beltesbrekke H. 1980. Dust in dental laboratories. Part I: types and levels in specific operations. J Prosth Dent. 43(6):687–692.
  • Brune D, Beltesbrekke H. 1981. Levels of methylmethacrylate, formaldehyde, and asbestos in dental workroom air. Scand J Dent Res. 89(1):113–116.
  • Brune D, Beltesbrekke H, Melsom S. 1981. Dust in workroom air of dental laboratories. Swed Dent J. 5(5–6):247–251.
  • Bureau of Labor Statistics [BLS]. 2019a. Occupational outlook handbook: dental and ophthalmic laboratory technicians and medical appliance technicians. Washington (DC): U.S. Department of Labor, Bureau of Labor Statistics [last modified 2019 Sep 4]. https://www.bls.gov/ooh/production/dental-and-ophthalmic-laboratory-technicians-and-medical-appliance-technicians.htm.
  • Bureau of Labor Statistics [BLS] 2019b. Occupational Outlook Handbook: Dental Assistants. Washington (DC): U.S. Department of Labor, Bureau of Labor Statistics [last modified 2019 Oct 15]. https://www.bls.gov/ooh/healthcare/dental-assistants.htm.
  • Bureau of Labor Statistics [BLS] 2019c. Occupational outlook handbook: dental hygienists. Washington (DC): U.S. Department of Labor, Bureau of Labor Statistics [last modified 2019 Dec 6]. https://www.bls.gov/ooh/healthcare/dental-hygienists.htm.
  • Bureau of Labor Statistics [BLS]. 2019d. Occupational outlook handbook: dentists. Washington (DC): U.S. Department of Labor, Bureau of Labor Statistics [last modified 2019 Sep 4]. https://www.bls.gov/ooh/healthcare/dentists.htm.
  • Burnett G. 1976. Letter to the editor: substitute for asbestos in casting rings. Br Dent J. 141(6):171.
  • Choël L, Grosgogeat B, Bourgeois D, Descotes J. 1999. Occupational toxic risks in dental laboratory technicians. J Environ Med. 1(4):307–314.
  • Choudat D. 1994. Occupational lung diseases among dental technicians. Tuber Lung Dis. 75(2):99–104.
  • Choudat D, Triem S, Weill B, Vicrey C, Ameille J, Brochard P, Letourneux M, Rossignol C. 1993. Respiratory symptoms, lung function, and pneumoconiosis among self employed dental technicians. Br J Ind Med. 50(5):443–449.
  • Clarke CC, Mowat FS, Kelsh MA, Roberts MA. 2006. Pleural plaques: a review of diagnostic issues and possible nonasbestos factors. Arch Environ Occup Health. 61(4):183–192.
  • Coleman RL. 1928. Physical properties of dental materials (Gold alloys and accessory materials). Bur Stan J Res. 1(6):867–938.
  • Collard SM, Vogel JJ, Ladd GD. 1991. Respirability, microstructure and filler content of composite dusts. Am J Dent. 4(3):143–151.
  • Compton SP, Millette JR. 2010a. Report of results: MVA8587. Asbestos fiber analysis Kerr strip asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2010b. Report of results: MVA8587. Asbestos fiber release from a Kerr asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2010c. Report of results: MVA8589. Asbestos fiber analysis whip mix asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2010d. Report of results: MVA8589. Asbestos fiber release from a whip mix asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2011a. Report of results: MVA8589. Asbestos fiber analysis and release from a whip mix asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2011b. Report of results: MVA8589. Asbestos fiber release during tearing of a whip mix asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2011c. Report of results: MVA8814. Asbestos fiber analysis and release from a Kerr asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2011d. Report of results: MVA8814. Asbestos fiber release during tearing of a Kerr asbestos dental liner. Duluth (GA): MVA Scientific Consultants..
  • Compton SP, Millette JR. 2011e. Report of results: MVA9045. Asbestos fiber analysis of asbestos dental liner. Duluth (GA): MVA Scientific Consultants.
  • Compton SP, Millette JR. 2012. Report of results: MVA9046. Asbestos fiber analysis of dental materials – Petitpas case. Duluth (GA): MVA Scientific Consultants.
  • Consumer Product Safety Commission [CPSC]. 1988. Briefing package of the CPSC Office of the Secretary on a petition to ban play sand with non-asbestiform tremolite. Washington (DC): U.S. Consumer Product Safety Commission.
  • Cook A. 2008. Asbestos dressing. Br Dent J. 204(5):224.
  • Council on Dental Therapeutics [CDT]. 1976. Hazards of asbestos in dentistry. J Am Dent Assoc. 92(4):777–778.
  • Cutright DE, Huget EF, Brady JM. 1980. Asbestos: a subtle carcinogen in the dental laboratory. Gen Dent. 28(3):46–50.
  • Davis DR. 1986. The nature and hazards of asbestos. Cda J. 14(6):28–34.
  • Davis DR. 1987. Potential health hazards of ceramic ring lining material. J Prosth Dent. 57(3):362–369.
  • Davis DR. 1995. Release of asbestos fibers during casting ring liner manipulation. J Prosthet Dent. 74(3):294–298.
  • De Vuyst P, Vande Weyer R, De Coster A, Marchandise FX, Dumortier P, Ketelbant P, Jedwab J, Yernault JC. 1986. Dental technician's pneumoconiosis. A report of two cases. Am Rev Respir Dis. 133(2):316–320.
  • Delgado VP, Peyton FA. 1953. The hygroscopic setting expansion of a dental casting investment. J Prosth Dent. 3(3):423–433.
  • Dellisanti F, Minguzzi V, Morandi N. 2001–2002. Experimental results from thermal treatment of asbestos containing materials. GeoActa. 1:61–70.
  • Dinger EJ. 1963. Guide to laboratory procedures for constructing a removable partial denture. Ann Arbor (MI): Overbeck.
  • Donovan EP, Donovan BL, Sahmel J, Scott PK, Paustenbach DJ. 2011. Evaluation of bystander exposures to asbestos in occupational settings: A review of the literature and application of a simple eddy diffusion model. Crit Rev Toxicol. 41(1):50–72.
  • Dyer MRY. 1967. The possible adverse effects of asbestos in gingivectomy pacts. Br Dent J. 122(11):507.
  • Earnshaw R. 1988. The effect of casting ring liners on the potential expansion of a gypsum-bonded investment. J Dent Res. 67(11):1366–1370.
  • Eriksson M, Hardell L, Malker H, Weiner J. 1998. Increased cancer incidence in physicians, dentists, and health care workers. Oncol Rep. 5(6):1413–1418.
  • Finley BL, Pierce JS, Phelka AD, Adams RE, Paustenbach DJ, Thuett KA, Barlow CA. 2012. Evaluation of tremolite asbestos exposures associated with the use of commercial products. Crit Rev Toxicol. 42(2):119–146.
  • Froudarakis ME, Voloudaki A, Bouros D, Drakonakis G, Hatzakis K, Siafakas NM. 1999. Pneumoconiosis among Cretan dental technicians. Respiration. 66(4):338–342.
  • Fry C. 2008. Asbestos awareness. Br Dent J. 204(9):476–477.
  • Fry C. 2009. An investigation into asbestos related disease in the dental industry. Br Dent J. 206(10):515–516.
  • Fulton RS, Madden RM, Cheff SO. 1989. Ultrastructural pulmonary changes in mice exposed to aerosolized periodontal pack powder. Dent Mater. 5(3):194–200.
  • Gamble J, Gibbs GW. 2008. An evaluation of the risks of lung cancer and mesothelioma from exposure to amphibole cleavage fragments. Regul Toxicol Pharmacol. 52(1 Suppl):S154–S186.
  • Glass RL. 1966. Mortality of New England dentists 1921–1960, May, 1966. Public health service publication No.: 999-RH-18. Washington (DC): U.S. Department of Health, Education, and Welfare, Public Health Service, Division of Radiological Health.
  • Guglani LM, Allen EF. 1965. Connective tissue reaction to implants of periodontal packs. J Periodontol. 36:279–282.
  • Haldorsen T, Andersen A, Boffetta P. 2004. Smoking-adjusted incidence of lung cancer by occupation among Norwegian men. Cancer Causes Control. 15(2):139–147.
  • Hewett P, Logan P, Mulhausen J, Ramachandran G, Banerjee S. 2006. Rating exposure control using Bayesian decision analysis. J Occup Environ Hyg. 3(10):568–581.
  • Hill GB, Harvey W. 1972. The mortality of dentists. Br Dent J. 132(5):179–182.
  • Hollenback GM. 1962. A brief history of the cast restoration. J S CA State Dent Assoc. 30(1):8–18.
  • Hollenback GM. 1964. Chapter 1: history of the cast restoration science and technic of the cast restoration. St. Louis (MO): C.V. Mosby; p. 17–33.
  • Hollenback GM, Rhoads JE. 1960. A comparison of the linear expansion of investment with the linear casting shrinkage of gold: part IV. J S CA State Dent Assoc. 28(2):40–46.
  • Infante PF, Lemen RA. 1976. Letter: asbestos in dentistry. J Am Dent Assoc. 93(2):221–222.
  • International Agency for Research on Cancer [IARC]. 1977. Asbestos. IARC monographs on the evaluation of carcinogenic risks to humans. Volume 14. Lyon: World Health Organization, International Agency for Research on Cancer; p. 11–81.
  • J. F. Jelenko & Co. 1963. Crown and bridge construction: a handbook of dental laboratory procedures. 5th ed. New Rochelle (NY): Jelenko.
  • Jacobsen N, Derand T, Hensten-Pettersen A. 1996. Profile of work-related health complaints among Swedish dental laboratory technicians. Commun Dent Oral Epidemiol. 24(2):138–144.
  • Jahn SD, Bullock WH, Ignacio JS. 2015. A strategy for assessing and managing occupational exposures. 4th ed. Fairfax (VA): American Industrial Hygiene Association (AIHA).
  • Jung IH. 2011. Airborne asbestos concentrations of dental laboratories in one metropolitan city. J Korea Conv Soc. 2:31–36.
  • Kartaloglu Z, Ilvan A, Aydilek R, Cerrahoglu K, Tahaoglu K, Baloglu H, Misirli Z. 2003. Dental technician's pneumoconiosis: mineralogical analysis of two cases. Yonsei Med J. 44(1):169–173.
  • Kempen JH. 2011. Appropriate use and reporting of uncontrolled case series in the medical literature. Am J Ophthalmol. 151(1):7–10.e1.
  • Koifman S, Malhao TA, Pinto de Oliveira G, de Magalhaes Camara V, Koifman RJ, Meyer A. 2014. Cancer mortality among Brazilian dentists. Am J Ind Med. 57(11):1255–1264.
  • Kusiorowski R, Zaremba T, Piotrowski J, Adamek J. 2012. Thermal decomposition of different types of asbestos. J Therm Anal Calorim. 109(2):693–704.
  • Lacy AM, Fukui H, Jendresen MD. 1983. Three factors affecting investment setting expansion and casting size. J Prosthet Dent. 49(1):52–58.
  • Legan J, Madden R, Thoma G, Patten J. 1973. Biologic exposure to dental materials. Oral Surg Oral Med Oral Pathol. 36(6):908–914.
  • Loewen GM, Weiner D, McMahan J. 1988. Pneumoconiosis in an elderly dentist. Chest. 93(6):1312–1313.
  • Lung disease in dental laboratory technicians. 1985. Lancet. 1(8439):1200–1201.
  • Maguire SR. 1993. Employer and occupational tenure: 1991 update. Mon Labor Rev. 116(6):45–60.
  • Markowitz SB, Moline JM. 2017. Malignant mesothelioma due to asbestos exposure in dental tape. Am J Ind Med. 60(5):437–442.
  • Menck HR, Henderson BE. 1976. Occupational differences in rates of lung cancer. J Occup Med. 18(12):797–801.
  • Mensi C, Ciullo F, Barbieri GP, Riboldi L, Somigliana A, Rasperini G, Pesatori AC, Consonni D. 2017. Pleural malignant mesothelioma in dental laboratory technicians: a case series. Am J Ind Med. 60(5):443–448.
  • Millette JR. 2004. Report of results MVA6171. Asbestos fiber release dental casting ring liner. Duluth (GA): MVA Scientific Consultants.
  • Millette JR. 2005a. Report of results MVA6352. Asbestos fiber examination dental casting ring liner. Duluth (GA): MVA Scientific Consultants.
  • Millette JR. 2005b. Report of results MVA6352. Asbestos fiber release dental casting ring liner. Duluth (GA): MVA Scientific Consultants.
  • Millette JR. 2005c. Report of results: MVA6353. Asbestos fiber release dental casting ring liner PK-1. Duluth (GA): MVA Scientific Consultants.
  • Millette JR. 2005d. Report of results: MVA6353. Asbestos fiber release dental casting ring liner PK-2. Duluth (GA): MVA Scientific Consultants.
  • Millette JR. 2008. Report of results: MVA7382. Asbestos fiber analysis dental casting ring liner. Duluth (GA): MVA Scientific Consultants.
  • Millette JR. 2013. Supplemental report of results: MVA9389. Examination of jewelry making products for amphibole asbestos – Paul Greene case. Duluth (GA): MVA Scientific Consultants.
  • Millette JR, Compton S, DePasquale C. 2019. Microscopical analyses of asbestos-containing dental tape. Microscope. 67(3):99–109.
  • Moolgavkar SH, Chang ET, Mezei G, Mowat FS. 2017. Chapter 3, epidemiology of mesothelioma. In: Testa JR, editor. Asbestos and mesothelioma current cancer research. Cham, Switzerland: Springer; p. 43–72.
  • Morey EF. 1991a. Dimensional accuracy of small gold alloy castings. Part 1. A brief history and the behaviour of inlay waxes. Aust Dent J. 36(4):302–309.
  • Morey EF. 1991b. Dimensional accuracy of small gold alloy castings. Part 2. Gold alloy shrinkage. Aust Dent J. 36(5):391–396.
  • Morey EF. 1992a. Dimensional accuracy of small gold alloy castings. Part 3. Gypsum-bonded investment expansion. Aust Dent J. 37(1):43–54.
  • Morey EF. 1992b. Dimensional accuracy of small gold alloy castings. Part 4. The casting ring and ring liners. Aust Dent J. 37(2):91–97.
  • Morey EF, Earnshaw R. 1992. The fit of gold-alloy full-crown castings made with pre-wetted casting ring liners. J Dent Res. 71(12):1858–1864.
  • Morgenroth K, Kronenberger H, Michalke G, Schnabel R. 1985. Morphology and pathogenesis of pneumoconiosis in dental technicians. Pathol Res Pract. 179(4-5):528–536.
  • Mossman BT. 2008. Assessment of the pathogenic potential of asbestiform vs. nonasbestiform particulates (cleavage fragments) in in vitro (cell or organ culture) models and bioassays. Regul Toxicol Pharmacol. 52(1 Suppl):S200–S203.
  • Mossman BT. 2018. Mechanistic in vitro studies: What they have told us about carcinogenic properties of elongated mineral particles (EMPs). Toxicol Appl Pharmacol. 361:62–67.
  • Moyer RS. 1959. A laboratory procedure guide for operative and crown bridge technics. Ann Arbor (MI): Overbeck.
  • National Institute for Occupational Safety and Health [NIOSH]. 1994. NIOSH method 7400: asbestos and other fibers by phase contrast microscopy. NIOSH manual of analytical methods. Cincinnati, OH: National Institute for Occupational Safety and Health.
  • Nayebzadeh A, Dufresne A, Harvie S, Begin R. 1999. Mineralogy of lung tissue in dental laboratory technicians' pneumoconiosis. Am Ind Hyg Assoc J. 60(3):349–353.
  • Naylor WP, Moore BK, Phillips RW. 1987. A topographical assessment of casting ring liners using scanning electron microscopy (SEM). Quint Dent Tech. 11(6):415–420.
  • Nishio N, Tanaka H, Tsukuma H, Tokunaga R. 2004. Lung cancer risk in male dentists: a retrospective cohort study in Japan, 1964–1997. J Occup Health. 46(1):37–42.
  • Nissen T, Wynn R. 2014. The clinical case report: a review of its merits and limitations. BMC Res Notes. 7:264.
  • Occupational Safety and Health Administration [OSHA]. 1992. 29 CFR parts 1910 and 1926: occupational exposure to asbestos, tremolite, anthophyllite and actinolite; final rule. Fed Reg. 57(110):24310–24331.
  • Ogus H, Bourne R. 2007. Obituary: Richard James Bourne. Br Dent J. 203 (12):715.
  • Ohno H, Miyakawa O, Shiokawa N. 1982. Distortion of a MOD pattern caused by the setting and hygroscopic expansion of the investment in the casting ring. II. Influence of W/P ratio, pattern position in the ring, and the condition of the asbestos lining. Dent Mater J. 1(1):47–54.
  • Oliveira GJ, Leles CR. 2006. Critical appraisal and positive outcome bias in case reports published in Brazilian dental journals. J Dent Educ. 70(8):869–874.
  • Otterson EJ, Arra MC. 1974. Potential hazards of asbestos in periodontal packs. J Wisc Dent Assoc. 50(11):435–438.
  • Palmen N. 2005. Criteria document for Swedish occupational standards: cobalt and cobalt compounds. Vol. 2005. Stockholm: Arbetslivsinstitutet. (Arbete och hälsa); p. 12.
  • Persson B, Brune D. 1989. Chapter 18: dental laboratories. In: Brune DK, Edling C, editors. Occupational hazards in the health professions. Boca Raton (FL): CRC Press; p. 333–345.
  • Pesch B, Kendzia B, Gustavsson P, Jockel K, Johnen G, Pohlabeln H, Olsson A, Ahrens W, Gross IM, Bruske I, et al. 2012. Cigarette smoking and lung cancer-relative risk estimates for the major histological types from a pooled analysis of case-control studies. Int J Cancer. 131(5):1210–1219.
  • Pierce JS, McKinley MA, Paustenbach DJ, Finley BL. 2008. An evaluation of reported no-effect chrysotile asbestos exposures for lung cancer and mesothelioma. Crit Rev Toxicol. 38(3):191–214.
  • Pierce JS, Ruestow PS, Finley BL. 2016. An updated evaluation of reported no-observed adverse effect levels for chrysotile asbestos for lung cancer and mesothelioma. Crit Rev Toxicol. 46(7):561–586.
  • Price B, Ware A. 2009. Time trend of mesothelioma incidence in the United States and projection of future cases: an update based on SEER data for 1973 through 2005. Crit Rev Toxicol. 39(7):576–588.
  • Priest G, Horner JA. 1980. Fibrous ceramic aluminum silicate as an alternative to asbestos liners. J Prosth Dent. 44(1):51–56.
  • Pukkala E, Martinsen JI, Lynge E, Gunnarsdottir HK, Sparen P, Tryggvadottir L, Weiderpass E, Kjaerheim K. 2009. Occupation and cancer – follow-up of 15 million people in five Nordic countries. Acta Oncol. 48(5):646–790.
  • Radi S, Dalphin JC, Manzoni P, Pernet D, Leboube MP, Viel JF. 2002. Respiratory morbidity in a population of French dental technicians. Occup Environ Med. 59(6):398–404.
  • Reid AS, Causton BE, Jones JS, Ellis IO. 1991. Malignant mesothelioma after exposure to asbestos in dental practice. Lancet. 338(8768):696.
  • Rix BA, Lynge E. 1996. Cancer incidence in Danish health care workers. Scand J Soc Med. 24(2):114–120.
  • Rom WN, Lockey JE, Lee JS, Kimball AC, Bang KM, Leaman H, Johns RE, Jr., Perrota D, Gibbons HL. 1984. Pneumoconiosis and exposures of dental laboratory technicians. Am J Public Health. 74(11):1252–1257.
  • Sankila R, Karjalainen S, Laara E, Pukkala E, Teppo L. 1990. Cancer risk among health care personnel in Finland, 1971-1980. Scand J Work Environ Health. 16(4):252–257.
  • Selden AI, Persson B, Bornberger-Dankvardt SI, Winstrom LE, Bodin LS. 1995. Exposure to cobalt chromium dust and lung disorders in dental technicians. Thorax. 50(7):769–772.
  • Setcos JC, Vrijhoef MM, Blumershine R, Phillips RW. 1983. Airborne particles from alginate powders. J Am Dent Assoc. 106(3):355–358.
  • Shell JS. 1968a. Setting and thermal expansion of investments. I. Effect of short vs. full length asbestos liners. J Ala Dent Assoc. 52(3):17–21.
  • Shell JS. 1968b. Setting and thermal expansion of investments. II. Effects of: changes in water/powder ratio, dry vs. wet liners, and liner short on one end of ring only. J Ala Dent Assoc. 52(4):22–25.
  • Shell JS. 1969. Setting and thermal expansion of investments. 3. Effects of: no asbestos liner, coating asbestos with petroleum jelly, and double asbestos liner. J Ala Dent Assoc. 53(1):31–34.
  • Sherson D, Maltbaek N, Heydorn K. 1990. A dental technician with pulmonary fibrosis: a case of chromium-cobalt alloy pneumoconiosis? Eur Respir J. 3(10):1227–1229.
  • Sherson D, Maltbaek N, Olsen O. 1988. Small opacities among dental laboratory technicians in Copenhagen. Br J Ind Med. 45(5):320–324.
  • Shibuya M, Ohsawa M, Matsumoto H, Hisatsune K, Yasuda K. 1997. Anisotropic expansion in gypsum-bonded cristobalite investment mold. Dent Mater J. 16(1):48–59.
  • Shimpo H, Yokoyama E, Tsurumaki K. 1998. Causes of death and life expectancies among dentists. Int Dent J. 48(6):563–570.
  • Sichletidis L, Spyratos D, Chloros D, Michailidis K, Fourkiotou I. 2009. Pleural plaques in dentists from occupational asbestos exposure: a report of three cases. Am J Ind Med. 52(12):926–930.
  • Simning A, van Wijngaarden E. 2007. Literature review of cancer mortality and incidence among dentists. Occup Environ Med. 64(7):432–438.
  • Skinner EW. 1963. Some recent technical advance in dental materials. J Am Dent Assoc. 66:176–182.
  • Slitzbach LE. 1939. The silicosis hazard in mechanical dentistry. JAMA. 113(12):1116–1119.
  • Solomon ES. 2012. The past and future evolution of the dental workforce team. J Dent Ed. 76(8):1028–1035.
  • Souder WH, Paffenbarger GC. 1942. Physical properties of dental materials. United States National Bureau of Standards Circular C433. Washington (DC): U.S. Government Publishing Office.
  • Souder W, Sweeney WT. 1930. Tentative specifications for dental casting investment. J Am Dent Assoc. 17(5):780–782.
  • Swartz ML. 1969. Research in dental materials. J Am Dent Assoc. 79(4):901–917.
  • Sweeney WT. 1933. Cristobalite for dental investment. J Am Dent Assoc. 20(1):108–119.
  • Taggart WH. 1907. A new and accurate method of making gold inlays. Dent Cosmos. 49(11):1117–1121.
  • Takahashi J, Okazaki M, Kimura H, Hiraiwa K, Iwakawa Y, Mori S, Joshin K, Moriwaki Y, Doi Y. Y. 1983. The accuracy of occlusal cusp height in cast crowns. J Prosth Dent. 50(3):392–398.
  • Taylor NO, Paffenbarger GC, Sweeney WT. 1930. Dental inlay casting investments: physical properties and a specification. J Am Dent Assoc. 17(12):2266–2286.
  • Torbica N, Krstev S. 2006. World at work: dental laboratory technicians. Occup Environ Med. 63(2):145–148.
  • Tuengerthal S, Kronenberger H, Meyer-Sydow J, Morgenroth H, Rieman H, Schneider M. 1983. Radiological findings in chest x-ray examinations of dental technicians. Proceedings of the Sixth International Pneumoconiosis Conference; Geneva: ILO. p. 1201–1210.
  • Tulachka GJ, Brantley WA, McGivney GP, Ziebert GJ. 1987. An investigation of the potential biohazards associated with asbestos-substitute casting ring liners. J Prosthet Dent. 57(1):108–112.
  • Virta RL. 2002. Asbestos: geology, mineralogy, mining, and uses (open-file report 02-149). Reston (VA): U.S. Department of the Interior, U.S. Geological Survey.
  • Vu VT. 1993. Chapter 19, regulatory approaches to reduce human health risks associated with exposures to mineral fibers. In: Guthrie Jr. GD, Mossman BT, editors. Health effects of mineral dusts Volume 28: Reviews in Mineralogy. Washington (DC): Mineralogical Society of America; p. 545–554.
  • Wagner M. 1985. Safeguarding the physical well-being of dentists. J Am Dent Assoc. 110(1):16–24.
  • Williams C, Dell L, Adams R, Rose T, Van Orden D. 2013. State-of-the-science assessment of non-asbestos amphibole exposure: Is there a cancer risk? Environ Geochem Health. 35(3):357–377.
  • Woody RD, Huget EF, Cutright DE. 1977. Characterization of airborne particles from irreversible hydrocolloids. J Am Dent Assoc. 94(3):501–504.
  • Xu H, Veblen DR, Luo G, Xue J. 1996. Transmission electron microscopy study of the thermal decomposition of tremolite into clinopyroxene. Am Min. 81:1126–1132.
  • Yewe-Dyer M. 2008. Carcinogenic asbestos. Br Dent J. 204(10):544.
  • Yli-Urpo A, Oilo G, Syverud M. 1982. The effect of asbestos-alternatives on the accuracy of cast veneer crowns. Swed Dent J. 6(3):127–131.