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Sir John Walsh Research Institute researcher profile

Professor Karl Lyons

PositionHead of Department
DepartmentDepartment of Oral Rehabilitation
QualificationsMDS CertMaxillofacialPros PhD FRACDS
Research summaryProsthodontics

Research

Professor Lyons has carried out research in dental implants and materials and in microbial adhesion to dental obturator prostheses, particularly adhesion of C. albicans and S. epidermidis. The latter was the topic of his PhD, which was awarded in 2012. Dental obturator prostheses can restore surgical resection defects in the maxilla of patients who have had surgery to remove cancer in the palate or sinuses, but microbial adhesion, especially C. albicans, to these prostheses reduces the lifetime of the prosthesis and can affect the health of these patients, particularly during radiotherapy.

Professor Lyons' research has included both clinical and laboratory research. The most significant clinical findings have been:

  1. During head and neck radiotherapy there are large and rapid increases in microbial colonisation and a very high C. albicans colonisation count at the end of week one of radiotherapy can be used as a predictor for the need for anti-fungal treatment (and frequently hospitalisation) to manage oral complication from radiotherapy.
  2. Microbial colonisation of obturators increases during prosthodontic treatment, and during up to 10 years of follow-up, until a new obturator prosthesis is provided to a patient suggesting obturator prostheses should be relined or remade regularly.

Significant laboratory findings have been:

  1. The influence saliva has on either increasing or reducing microbial adhesion.
  2. Identifying a salivary protein that C. albicans adheres to. This research has been carried out with Professor Richard Cannon, Professor Robert Love and Dr Ann Holmes.

Professor Lyons has also been collaborating with DClinDent students with a research emphasis on clinical and in vitro research in the areas of implant prosthodontics and dental materials, particularly ceramics.

Publications

Chen, M. H.-M., Lyons, K., Tawse-Smith, A., & Ma, S. (2019). Resonance frequency analysis in assessing implant stability: A retrospective analysis. International Journal of Prosthodontics, 32(4), 317-326. doi: 10.11607/ijp.6057

Barazanchi, A., Li, K. C., Al-Amleh, B., Lyons, K., & Waddell, J. N. (2019). Adhesion of porcelain to three-dimensionally printed and soft milled cobalt chromium. Journal of Prosthodontic Research. Advance online publication. doi: 10.1016/j.jpor.2019.05.007

Friedlander, L. T., Meldrum, A. M., & Lyons, K. (2019). Curriculum development in final year dentistry to enhance competency and professionalism for contemporary general dental practice. European Journal of Dental Education. Advance online publication. doi: 10.1111/eje.12458

Thomson, W. M., Ibrahim, H., Lyons, K. M., Foster Page, L. A., & Hanlin, S. M. (2019). Personality, xerostomia and OHRQoL among 35-54-year-olds. Acta Odontologica Scandinavica, 77(2), 114-118. doi: 10.1080/00016357.2018.1510138

Kothari, S., Gray, A. R., Lyons, K., Tan, X. W., & Brunton, P. A. (2019). Vital bleaching and oral-health-related quality of life in adults: A systematic review and meta-analysis. Journal of Dentistry, 84, 22-29. doi: 10.1016/j.jdent.2019.03.007

Chapter in Book - Research

Cannon, R. D., Lyons, K. M., Chong, K., Newsham-West, K., Niimi, K., & Holmes, A. R. (2017). Adhesion of yeast and bacteria to oral surfaces. In G. J. Seymour, M. P. Cullinan & N. C. K. Heng (Eds.), Oral biology: Molecular techniques and applications: Methods in molecular biology (Vol. 1537). (2nd ed.) (pp. 165-190). New York, NY: Springer. doi: 10.1007/978-1-4939-6685-1_10

Beumer, III, J., Lyons, K., Jayanetti, J., & Sung, E. C. (2017). Restoration of acquired oral defects with osseointegrated implants. In S. J. Sadowski (Ed.), Evidence-based implant treatment planning clinical protocols. (pp. 302-324). Chichester, UK: Wiley Blackwell.

Beumer, III, J., Sung, E. C., & Lyons, K. (2015). Implants in irradiated tissues. In J. Beumer, III, R. F. Faulkner, K. C. Shah & P. K. Moy (Eds.), Fundamentals of implant dentistry: Prosthodontic principles (Vol. 1). (pp. 391-404). Hanover Park, IL: Quintessence.

Beumer, III, J., Faulkner, R. F., Lyons, K., Ma, S., Hanlin, S. M., & Okabe, H. (2015). Restoration of edentulous mandibles with overdentures. In J. Beumer, III, R. F. Faulkner, K. C. Shah & P. K. Moy (Eds.), Fundamentals of implant dentistry: Prosthodontic principles (Vol. 1). (pp. 39-74). Hanover Park, IL: Quintessence.

Beumer, III, J., Faulkner, R. F., Lyons, K., & Okabe, H. (2015). Restoration of edentulous maxillae with overdentures. In J. Beumer, III, R. F. Faulkner, K. C. Shah & P. K. Moy (Eds.), Fundamentals of implant dentistry: Prosthodontic principles (Vol. 1). (pp. 115-149). Hanover Park, IL: Quintessence.

Beumer, III, J., Sung, E. C., Kagan, R., Lyons, K. M., Gulbransen, H. J., Venkatachalam, B., & Ghaem-Maghami, N. (2011). Oral management of patients treated with radiation therapy and/or chemoradiation. In J. Beumer, III, M. T. Marunick & S. J. Esposito (Eds.), Maxillofacial rehabilitation: Prosthodontic and surgical management of cancer-related, acquired, and congenital defects of the head and neck. (3rd ed.) (pp. 1-59). Chicago: Quintessence Books.

Cannon, R. D., Lyons, K. M., Chong, K., & Holmes, A. R. (2010). Adhesion of yeast and bacteria to oral surfaces. In G. J. Seymour, M. P. Cullinan & N. C. K. Heng (Eds.), Oral Biology. (pp. 103-124). New York: Springer. doi: 10.1007/978-1-60761-820-1_8

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Journal - Research Article

Chen, M. H.-M., Lyons, K., Tawse-Smith, A., & Ma, S. (2019). Resonance frequency analysis in assessing implant stability: A retrospective analysis. International Journal of Prosthodontics, 32(4), 317-326. doi: 10.11607/ijp.6057

Kothari, S., Gray, A. R., Lyons, K., Tan, X. W., & Brunton, P. A. (2019). Vital bleaching and oral-health-related quality of life in adults: A systematic review and meta-analysis. Journal of Dentistry, 84, 22-29. doi: 10.1016/j.jdent.2019.03.007

Thomson, W. M., Ibrahim, H., Lyons, K. M., Foster Page, L. A., & Hanlin, S. M. (2019). Personality, xerostomia and OHRQoL among 35-54-year-olds. Acta Odontologica Scandinavica, 77(2), 114-118. doi: 10.1080/00016357.2018.1510138

Friedlander, L. T., Meldrum, A. M., & Lyons, K. (2019). Curriculum development in final year dentistry to enhance competency and professionalism for contemporary general dental practice. European Journal of Dental Education. Advance online publication. doi: 10.1111/eje.12458

Barazanchi, A., Li, K. C., Al-Amleh, B., Lyons, K., & Waddell, J. N. (2019). Adhesion of porcelain to three-dimensionally printed and soft milled cobalt chromium. Journal of Prosthodontic Research. Advance online publication. doi: 10.1016/j.jpor.2019.05.007

Lovelock, B., Lovelock, K., & Lyons, K. (2018). The impact of outbound medical (dental) tourism on the generating region: New Zealand dental professionals’ perspectives. Tourism Management, 67, 399-410. doi: 10.1016/j.tourman.2018.02.001

Schwass, D. R., Lyons, K. M., Love, R., Tompkins, G. R., & Meledandri, C. J. (2018). Antimicrobial activity of a colloidal AgNP suspension demonstrated in vitro against monoculture biofilms: Toward a novel tooth disinfectant for treating dental caries. Advances in Dental Research, 29(1), 117-123. doi: 10.1177/0022034517736495

Jansen van Vuuren, W.-A., Wong, P., Al-Amleh, B., Lyons, K. M., Li, K. C., & Waddell, J. N. (2018). Effect of a glaze layer on adhesion energy between resin cements to zirconia ceramic. International Journal of Adhesion & Adhesives, 84, 451-456. doi: 10.1016/j.ijadhadh.2018.03.003

Chai, S. Y., Bennani, V., Aarts, J. M., & Lyons, K. (2018). Incisal preparation design for ceramic veneers: A critical review. Journal of the American Dental Association, 149(1), 25-37. doi: 10.1016/j.adaj.2017.08.031

Lyons, K., Egan, J., Polyzois, G., Lagouvardos, P., Kranjcic, J., & Vojvodic, D. (2018). Flexible removable partial denture prostheses in New Zealand dental practice. New Zealand Dental Journal, 114(2), 79-84.

Bennani, V., Ibrahim, H., Al-Harthi, L., & Lyons, K. M. (2017). The periodontal restorative interface: Esthetic considerations. Periodontology 2000, 74(1), 74-101. doi: 10.1111/prd.12191

Choi, J. E., Lyons, K. M., Kieser, J. A., & Waddell, N. J. (2017). Diurnal variation of intraoral pH and temperature. BDJ Open, 3, 17015. doi: 10.1038/bdjopen.2017.15

Ibrahim, H., Lyons, K. M., Armfield, J. M., & Thomson, W. M. (2017). Performance of the Index of Dental Anxiety and Fear in a population-based sample of adults. Australian Dental Journal, 62(4), 478-484. doi: 10.1111/adj.12541

Barazanchi, A., Li, K. C., Al-Amleh, B., Lyons, K., & Waddell, J. N. (2017). Additive technology: Update on current materials and applications in dentistry. Journal of Prosthodontics, 26(2), 156-163. doi: 10.1111/jopr.12510

Abduo, J., & Lyons, K. M. (2017). Interdisciplinary interface between fixed prosthodontics and periodontics. Periodontology 2000, 74(1), 40-62. doi: 10.1111/prd.12189

Jansen van Vuuren, W.-A., Milmine, H., Al-Amleh, B., Lyons, K. M., & Waddell, N. J. (2017). Effect of multiple firings on the physical properties of a CAD/CAM produced lithium disilicate restorative material. New Zealand Dental Journal, 113(4), 31-38.

Choi, J. E., Lyons, K. M., McLean, M. C. B., & Waddell, J. N. (2016). Interarch comparison of intraoral pH and temperature: A pilot study. BDJ Open, 2, 16008. doi: 10.1038/bdjopen.2016.8

Chen, V., Foster Page, L., McMillan, J., Lyons, K., & Gibson, B. (2016). Measuring the attitudes of dental students towards social accountability following dental education: Qualitative findings. Medical Teacher, 38(6), 599-606. doi: 10.3109/0142159X.2015.1060303

Choi, J. E., Waddell, J. N., Lyons, K. M., & Kieser, J. A. (2016). Intraoral pH and temperature during sleep with and without mouth breathing. Journal of Oral Rehabilitation, 43(5), 356-363. doi: 10.1111/joor.12372

Choi, J. E., Loke, C., Waddell, J. N., Lyons, K. M., Kieser, J. A., & Farella, M. (2015). Continuous measurement of intra-oral pH and temperature: Development, validation of an appliance and a pilot study. Journal of Oral Rehabilitation, 42(8), 563-570. doi: 10.1111/joor.12294

Holmes, A. R., Rodrigues, E., van der Wielen, P., Lyons, K. M., Haigh, B. J., Wheeler, T. T., Dawes, P. J. D., & Cannon, R. D. (2014). Adherence of Candida albicans to silicone is promoted by the human salivary protein SPLUNC2/PSP/BPIFA2. Molecular Oral Microbiology, 29(2), 90-98. doi: 10.1111/mom.12048

Al-Amleh, B., Waddell, J. N., Lyons, K., & Swain, M. V. (2014). Influence of veneering porcelain thickness and cooling rate on residual stresses in zirconia molar crowns. Dental Materials, 30(3), 271-280. doi: 10.1016/j.dental.2013.11.011

Polyzois, G., & Lyons, K. (2014). Monitoring Shore A hardness of silicone facial elastomers: The effect of natural aging and silicone type after 1 year. Journal of Craniofacial Surgery, 25(4), 1217-1221. doi: 10.1097/scs.0000000000000871

Lee, A., Swain, M., He, L., & Lyons, K. (2014). Wear behavior of human enamel against lithium disilicate glass ceramic and type III gold. Journal of Prosthetic Dentistry, 112(6), 1399-1405. doi: 10.1016/j.prosdent.2014.08.002

Law, C., Bennani, V., Lyons, K., & Swain, M. (2014). Influence of implant framework and mandibular flexure on the strain distribution on a Kennedy class II mandible restored with a long-span implant fixed restoration: A pilot study. Journal of Prosthetic Dentistry, 112(1), 31-37. doi: 10.1016/j.prosdent.2013.08.012

Abduo, J., Lyons, K., & Bennamoun, M. (2014). Trends in computer-aided manufacturing in prosthodontics: A review of the available streams. International Journal of Dentistry, 2014, 783948. doi: 10.1155/2014/783948

Jiang, Y., Foster Page, L. A., McMillan, J., Lyons, K., Broadbent, J., & Morgaine, K. C. (2014). Is New Zealand water fluoridation justified? New Zealand Medical Journal, 127(1406). Retrieved from http://www.nzma.org.nz/journal

Schwass, D. R., Lyons, K. M., & Purton, D. G. (2013). How long will it last? The expected longevity of prosthodontic and restorative treatment. New Zealand Dental Journal, 109(3), 98-105.

Abduo, J., & Lyons, K. (2013). Rationale for the use of CAD/CAM technology in implant prosthodontics. International Journal of Dentistry, 2013, 768121. doi: 10.1155/2013/768121

Law, C., Bennani, V., Lyons, K., & Swain, M. (2012). Mandibular flexure and its significance on implant fixed prostheses: A review. Journal of Prosthodontics, 21(3), 219-224. doi: 10.1111/j.1532-849X.2011.00798.x

Lee, A., He, L. H., Lyons, K., & Swain, M. V. (2012). Tooth wear and wear investigations in dentistry. Journal of Oral Rehabilitation, 39(3), 217-225. doi: 10.1111/j.1365-2842.2011.02257.x

Abduo, J., Lyons, K., Waddell, N., Bennani, V., & Swain, M. (2012). A comparison of fit of CNC-milled titanium and zirconia frameworks to implants. Clinical Implant Dentistry & Related Research, 14(Suppl. 1), e20-e29. doi: 10.1111/j.1708-8208.2010.00334.x

Abduo, J., & Lyons, K. (2012). Effect of vertical misfit on strain within screw-retained implant titanium and zirconia frameworks. Journal of Prosthodontic Research, 56(2), 102-109. doi: 10.1016/j.jpor.2011.09.001

Abduo, J., & Lyons, K. (2012). Clinical considerations for increasing occlusal vertical dimension: A review. Australian Dental Journal, 57(1), 2-10. doi: 10.1111/j.1834-7819.2011.01640.x

Abduo, J., Lyons, K., Bennani, V., Waddell, N., & Swain, M. (2011). Fit of screw-retained fixed implant frameworks fabricated by different methods: A systematic review. International Journal of Prosthodontics, 24(3), 207-220.

Mackie, A., Lyons, K., Thomson, W. M., & Payne, A. G. T. (2011). Mandibular two-implant overdentures: Prosthodontic maintenance using different loading protocols and attachment systems. International Journal of Prosthodontics, 24(5), 405-416.

Mackie, A., Lyons, K., Thomson, W. M., & Payne, A. G. T. (2011). Mandibular two-implant overdentures: Three-year prosthodontic maintenance using the locator attachment system. International Journal of Prosthodontics, 24(4), 328-331.

Abduo, J., Lyons, K., Bennani, V., Waddell, N., & Swain, M. (2011). Ajuste de estructuras fijas atornilladas sobre implantes, fabricadas mediante diferentes métodos [Adjusting screw fixed structures on implants, manufactured by different methods: A systematic review]. Revista Internacional de Prótesis Estomatológica, 13(4), 253-265.

Chang, C. W., Waddell, J. N., Lyons, K. M., & Swain, M. V. (2011). Cracking of porcelain surfaces arising from abrasive grinding with a dental air turbine. Journal of Prosthodontics, 20(8), 613-620. doi: 10.1111/j.1532-849X.2011.00760.x

Abduo, J., Bennani, V., Lyons, K., Waddell, N., & Swain, M. (2011). A novel in vitro approach to assess the fit of implant frameworks. Clinical Oral Implants Research, 22(6), 658-663. doi: 10.1111/j.1600-0501.2010.02019.x

Abduo, J., Bennani, V., Waddell, N., Lyons, K., & Swain, M. (2010). Assessing the fit of implant fixed prostheses: A critical review. International Journal of Oral & Maxillofacial Implants, 25(3), 506-515.

Al-Ani, A., Bennani, V., Chandler, N. P., Lyons, K. M., & Thomson, W. M. (2010). New Zealand dentists' use of gingival retraction techniques for fixed prosthodontics and implants. New Zealand Dental Journal, 106(3), 92-96.

Al-Amleh, B., Lyons, K., & Swain, M. (2010). Clinical trials in zirconia: A systematic review. Journal of Oral Rehabilitation, 37(8), 641-652. doi: 10.1111/j.1365-2842.2010.02094.x

Abduo, J., Lyons, K., & Swain, M. (2010). Fit of zirconia fixed partial denture: A systematic review. Journal of Oral Rehabilitation, 37(11), 866-876. doi: 10.1111/j.1365-2842.2010.02113.x

Kuzmanovic, D., & Lyons, K. M. (2009). Tooth shade selection using a colorimetric instrument compared with that using a conventional shade guide. New Zealand Dental Journal, 105(4), 131-134.

Lyons, K. M., Beumer, III, J., & Caputo, A. A. (2005). Abutment load transfer by removable partial denture obturator frameworks in different acquired maxillary defects. Journal of Prosthetic Dentistry, 94(3), 281-288.

Turner, S. R., Love, R. M., & Lyons, K. M. (2004). An in-vitro investigation of the antibacterial effect of nisin in root canals and canal wall radicular dentine. International Endodontic Journal, 37, 664-671.

Healey, D. L., & Lyons, K. M. (2002). Evidence-based practice in dentistry. New Zealand Dental Journal, 98, 32-35.

Lyons, K. M. (2001). Aetiology of abfraction lesions. New Zealand Dental Journal, 97, 93-98.

Hood, J. A., Lyons, K. M., & Rodda, J. C. (1999). Barodontalgia: A review, and the influence of simulated diving on microleakage and on the retention of full cast crowns. Military Medicine, 164(3), 221.

Lyons, K. M., & Ng, B. P. (1998). Nightguard vital bleaching: A review and clinical study. New Zealand Dental Journal, 94, 100-105.

Lyons, K. M. (1997). Alternatives to amalgam. New Zealand Dental Journal, 93(412), 47-51.

Lyons, K. M., Rodda, J. C., & Hood, J. A. (1997). Use of a pressure chamber to compare microleakage of three luting agents. International Journal of Prosthodontics, 10(5), 426-433.

Lyons, K. M., Rodda, J. C., & Hood, J. A. (1997). The effect of environmental pressure changes during diving on the retentive strength of different luting agents for full cast crowns. Journal of Prosthetic Dentistry, 78(5), 522-527.

Lyons, K. M., Rodda, J. C., & Hood, J. A. A. (1997). Uso di una camera barica per confrontare las microinfiltrazione di tre cementi. La Rivista Internazionale di Odontoiatria Protesica, 10, 426-433.

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Journal - Research Other

Ma, R., Lyons, K., & Mei, L. (2019). Strategies for the management of biofilm on silicone maxillofacial prosthesis: A review of the literature. New Zealand Dental Journal, 115(2), 59-65. [Review].

Chen, M. H.-M., Lyons, K. M., Tawse-Smith, A., & Ma, S. (2019). Clinical significance of the use of resonance frequency analysis in assessing implant stability: A systematic review. International Journal of Prosthodontics, 32(1), 51-58. doi: 10.11607/ijp.6048

Lyons, K. M., & Darby, I. (2017). Interdisciplinary periodontics: The multidisciplinary approach to the planning and treatment of complex cases. Periodontology 2000, 74(1), 7-10. doi: 10.1111/prd.12187

Mackie, A., & Lyons, K. (2008). The role of occlusion in temporomandibular disorders: A review of the literature. New Zealand Dental Journal, 104(1), 54-59.

Minguez, C., & Lyons, K. (2007). Failure of crowns and bridges: A review of the literature. New Zealand Dental Journal, 103(1), 7-13.

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