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Publications: O’Donnell MJ, Shore AC, Russell RJ, Coleman DC.
(2007). Optimisation of the long-term efficacy of dental
Coleman DC, O’Donnell MJ, Shore AC, Russell chair waterline disinfection by the identification and recti-
RJ. (2009). Biofilm problems in dental unit water fication of factors associated with waterline disinfection
systems and its practical control. Journal of Applied failure. Journal of Dentistry, 35:438-451.
Microbiology, 106:1424-1437.
O’Donnell MJ, Shore AC. Coleman DC. (2006).
O’Donnell MJ, Boyle M, Swan J, Russell RJ, A novel automated waterline cleaning system that facili-
Coleman DC. (2009). A centralised, automated tates effective and consistent control of microbial biofilm
dental hospital water quality and biofilm manage- contamination of dental chair unit waterlines: A one-year
ment system using neutral Ecasol maintains dental study. Journal of Dentistry, 34:648-661.
unit waterline output at better than potable quality:
a 2-year longitudinal study. Journal of Dentistry, Tuttlebee CM, O’Donnell MJ, Keane CT, Russell RJ,
37:748-762. Sullivan DJ, Falkiner F, Coleman DC. (2002). Effective
control of dental chair unit waterline biofilm and marked
Coleman DC, O’Donnell MJ, Shore AC, Swan J, reduction of bacterial contamination of output water using
Russell RJ. (2007). The role of manufacturers in two peroxide-based disinfectants. Journal of Hospital
reducing biofilms in dental chair waterlines. Journal Infection, 52:192-205.
of Dentistry, 35:701-711.

Coleman DC, O’Donnell, MJ. (2007). Guest
editorial. Journal of Dentistry, 35:699-700.

hydrogen peroxide and silver-ion-containing between DDSH, Planmeca and Trustwater Planmeca's water 19
waterline disinfectant Planosil, which effici- (Clonmel, Ireland) have resulted in the deve- systems were found to
ently removes water­line biofilm. lopment of a fully automated and centrali- provide user-friendly
sed water treatment system capable of and effective solutions to
Design, human and microbiological maintaining dental unit supply and output the problem of dental unit
factors that can adversely affect waterline water at better than potable quality simul- waterline biofilm.
cleaning were identified during the course taneously in hundreds of dental units. All
of this research. This information was used that is required is the activation of a prepro-
constructively to improve the design of grammed daily flushing cycle of dental unit
the waterline cleaning systems and clea- waterline outlets.
ning protocols. This approach of extensive
field-testing and improvement of Planmeca Dr Mary O'Donnell and Prof. David Coleman at the Trinity College have
waterline cleaning systems resulted in water- collaborated with Planmeca in terms of dental unit waterline infection
line cleaning systems that are robust, reliable control since the late 1990's.
and effective in the long-term.

Other research resulted in design changes
to suction system components that made
them more robust and identified the best
disinfectant to use for suction system disin-
fection. Planmeca engineers were very will­
ing to adopt our suggestions and in recent
years this resulted in the developm­ ent of an
automated suction disinfection system that
is now available in current Planmeca dental
units. This new process makes suction disin-
fection simpler and more reliable, a signifi-
cant benefit in busy dental clinics.

More recently, collaborative research