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Health Sciences profile

Dr Don Schwass

PositionSenior Lecturer
DepartmentDean's Office (Dentistry)
QualificationsBSc(Waikato) BDS DClinDent(Otago) FPFA
Research summaryCaries diagnosis and management, biomaterials, prosthodontics
Teaching
  • Paper co-ordinator for BDS third-year DENT 361 and DENT 364
  • Teaching into undergraduate BDS curriculum and postgraduate prosthodontics
  • Interests in diagnostic tools for clinical dentistry including CBCT, CAD-CAM, and dental simulation
Memberships
  • Member of the New Zealand Dental Association
  • Past President, Otago Branch, New Zealand Dental Association
  • Member of the New Zealand Association of Prosthodontists and Restorative Dentists
  • Member of the Academy of Australian and New Zealand Prosthodontists
  • Member of the ITI International Team for Implantology
  • Member of Faculty of Dentistry Building Project Team
  • Chair of Faculty of Dentistry Digitisation Committee
  • Chair of Faculty of Dentistry Cone Beam Computerised Tomography (CBCT) Committee
  • Member of Research Commercialisation – Strategic and Implementation Committee for Health Sciences Division
  • Consultant for ACC
  • Consultant for the Health and Disability Commissioner (HDC)
  • Consultant and examiner for the Dental Council of New Zealand, and co-ordinator of continuing education activities provided by the Faculty of Dentistry for the Dental Council of New Zealand
  • Scientific Editor of the New Zealand Dental Journal
  • Fellow of the Pierrre Fauchard Academy
Clinical
  • Specialist Prosthodontist
  • Part-time private specialist prosthodontic practice
  • Interests in prosthodontics, cariology, diagnostic tools, and operative dentistry

Research

Dr Schwass's research interests focus on the assessment and application of diagnostic tools for cariology, the management of dental caries, and the use of micro-CT (micro- computer tomography) and CBCT (cone beam computer tomography) for evaluation of mineralised tissues.

In collaboration with Dr Carla Meledandri (Chemistry, University of Otago), he has developed several methods for size-controlled synthesis of micelle-stabilised silver nanoparticles, engineered for optimal antimicrobial and optical properties, specifically designed for application on teeth to prevent, control progression, or eliminate, dental caries. In January 2013 a provisional patent application was filed pertaining to the 'assembly of micelle aggregates of surfactant micelles and silver nanopar ticles, and use as an antibacterial agent'.Working with Dr Meledandri, and with support from Otago Innovation Ltd, he is currently seeking engagement from a commercial partner to further develop this novel treatment into a marketable dental product.

Dr Schwass is enrolled in a PhD (part-time) relating to his work with silver nanoparticles, and is an advisor for several other PhD students providing technical support on micro-CT and CBCT.

He also contributes as a researcher in a randomised controlled clinical trial exploring the efficacy of resin infiltration as a means of inhibiting caries progression in children providing microscopy and technical support, collaborating with other department academic staff.

Publications

Kabaliuk, N., Nejati, A., Loch, C., Schwass, D., Cater, J. E., & Jermy, M. C. (2017). Strategies for segmenting the upper airway in Cone-Beam Computed Tomography (CBCT) data. Open Journal of Medical Imaging, 7(4), 196-219. doi: 10.4236/ojmi.2017.74019

Kim, K. H., Loch, C., Waddell, J. N., Tompkins, G., & Schwass, D. (2017). Surface characteristics and biofilm development on selected dental ceramic materials. International Journal of Dentistry, 2017, 7627945. doi: 10.1155/2017/7627945

Hsu, B., Lee, S., Schwass, D., & Tompkins, G. (2017). Antimicrobial activity of chemomechanical gingival retraction products. Journal of the American Dental Association. Advance online publication. doi: 10.1016/j.adaj.2017.03.006

Foster Page, L. A., Beckett, D., Ahmadi, R., Schwass, D. R., Leon de la Barra, S., Moffat, S. M., Meldrum, A. M., & Thomson, W. M. (2017). Resin infiltration of caries in primary molars in a community setting: 24-month randomized controlled trial findings. JDR Clinical & Translational Research. Advance online publication. doi: 10.1177/2380084417699400

Tiu, J., Cheng, E., Hung, T.-C., Yu, C.-C., Lin, T., Schwass, D., & Al-Amleh, B. (2016). Effectiveness of crown preparation assessment software as an educational tool in simulation clinic: A pilot study. Journal of Dental Education, 80(8), 1004-1011.

Chapter in Book - Research

Faulkner, R. F., Beumer, III, J., Shah, K. C., Schwass, D. R., & Wadhwani, C. (2015). Restoration of the posterior quadrants of partially edentulous patients: Examination and prosthodontic procedures. In J. Beumer, III, R. F. Faulkner, K. C. Shah & P. K. Moy (Eds.), Fundamentals of implant dentistry: Prosthodontic principles (Vol. 1). (pp. 231-283). Hanover Park, IL: Quintessence.

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Journal - Research Article

Kabaliuk, N., Nejati, A., Loch, C., Schwass, D., Cater, J. E., & Jermy, M. C. (2017). Strategies for segmenting the upper airway in Cone-Beam Computed Tomography (CBCT) data. Open Journal of Medical Imaging, 7(4), 196-219. doi: 10.4236/ojmi.2017.74019

Foster Page, L. A., Beckett, D., Ahmadi, R., Schwass, D. R., Leon de la Barra, S., Moffat, S. M., Meldrum, A. M., & Thomson, W. M. (2017). Resin infiltration of caries in primary molars in a community setting: 24-month randomized controlled trial findings. JDR Clinical & Translational Research. Advance online publication. doi: 10.1177/2380084417699400

Hsu, B., Lee, S., Schwass, D., & Tompkins, G. (2017). Antimicrobial activity of chemomechanical gingival retraction products. Journal of the American Dental Association. Advance online publication. doi: 10.1016/j.adaj.2017.03.006

Kim, K. H., Loch, C., Waddell, J. N., Tompkins, G., & Schwass, D. (2017). Surface characteristics and biofilm development on selected dental ceramic materials. International Journal of Dentistry, 2017, 7627945. doi: 10.1155/2017/7627945

Tiu, J., Cheng, E., Hung, T.-C., Yu, C.-C., Lin, T., Schwass, D., & Al-Amleh, B. (2016). Effectiveness of crown preparation assessment software as an educational tool in simulation clinic: A pilot study. Journal of Dental Education, 80(8), 1004-1011.

Atieh, M. A., Alsabeeha, N. H. M., Payne, A. G. T., de Silva, R. K., Schwass, D. R., & Duncan, W. J. (2014). The prognostic accuracy of resonance frequency analysis in predicting failure risk of immediately restored implants. Clinical Oral Implants Research, 25(1), 29-35. doi: 10.1111/clr.12057

Garden, A. L., Scholz, K., Schwass, D. R., & Meledandri, C. J. (2014). Optimized colloidal chemistry for micelle-templated synthesis and assembly of silver nanocomposite materials. Colloids & Surfaces A, 441, 367-377. doi: 10.1016/j.colsurfa.2013.09.012

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.

Atieh, M. A., Alsabeeha, N. H. M., Duncan, W. J., de Silva, R. K., Cullinan, M. P., Schwass, D., & Payne, A. G. T. (2013). Immediate single implant restorations in mandibular molar extraction sockets: A controlled clinical trial. Clinical Oral Implants Research, 24(5), 484-496. doi: 10.1111/j.1600-0501.2011.02415.x

Schwass, D. R., Leichter, J. W., Purton, D. G., & Swain, M. V. (2013). Evaluating the efficiency of caries removal using an Er:YAG laser driven by fluorescence feedback control. Archives of Oral Biology, 58(6), 603-610. doi: 10.1016/j.archoralbio.2012.09.017

Garden, A. L., van der Salm, L., Schwass, D. R., & Meledandri, C. J. (2013). Towards a tunable microemulsion method for nanoparticle synthesis. RSC Advances, 3(7), 2192-2196. doi: 10.1039/C2RA21491A

Loch, C., Schwass, D. R., Kieser, J. A., & Fordyce, R. E. (2013). Use of micro-computed tomography for dental studies in modern and fossil odontocetes: Potential applications and limitations. NAMMCO Scientific Publications, 10. doi: 10.7557/3.2616

Loch, C., Grando, L. J., Schwass, D. R., Kieser, J. A., Fordyce, R. E., & Simões-Lopes, P. C. (2013). Dental erosion in South Atlantic dolphins (Cetacea: Delphinidae): A macro and microscopic approach. Marine Mammal Science, 29(2), 338-347. doi: 10.1111/j.1748-7692.2012.00562.x

Atieh, M. A., Alsabeeha, N. H. M., Payne, A. G. T., Schwass, D. R., & Duncan, W. J. (2012). Insertion torque of immediate wide-diameter implants: A finite element analysis. Quintessence International, 43(9), e115-e126.

Schwass, D. R., Swain, M. V., Purton, D. G., & Leichter, J. W. (2009). A system of calibrating microtomography for use in Caries Research. Caries Research, 43(4), 314-321. doi: 10.1159/000226230

Bennani, V., Schwass, D., & Chandler, N. (2008). Gingival retraction techniques for implants versus teeth: Current status. Journal of the American Dental Association, 139(10), 1354-1363.

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Journal - Research Other

Schwass, D. R., & Meledandri, C. J. (2014). Enhanced penetration of silver nanocomposite assemblies into dentine using iontophoresis: Toward the treatment of dental caries [Communication]. ChemPlusChem, 79(12), 1671-1675. doi: 10.1002/cplu.201402132

Bennani, V., Schwass, D., & Chandler, N. (2009). Gingival retraction: Author's response [Letter]. Journal of the American Dental Association, 140(2), 143-144.

Schwass, D. (2008). Most cited: Number 2: Laser irradiation of human dental enamel and dentine [Report]. New Zealand Dental Journal, 104(3), 110-111.

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