THE MICROBIAL PROFILES OF DENTAL UNIT WATERLINES IN A
DENTAL SCHOOL CLINIC
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Juma ALKHABULI
BDS, MDentSci, MFDS RCPS, FICD, PhD
Associate Professor and Chair of Basic and Medical Sciences Department
Ras Al-Khaimah (RAK) College of Dental Sciences
RAK Medical and Health Sciences University (RAKMHSU), UAE
CV
Dr Alkhabuli obtained BDS from University of Garyounis, Libya (1985). Between 1986-199, worked in health
sector in different regions, where he gained most of his clinical experience as a general practitioner. He was
appointed as director of Aujalah health center, head of regional Medical & Dental Association and director of
dental section of SIRTCO medical department.
2001-2005 obtained his MDS and PhD in oral pathology from Leeds University, UK. MFDS RCPS (Glasgow),
FICD (North Africa).
His research interest is in role of immunosurveillance cells in tumours and published several papers in this
context.
He worked as Associate Professor in Ajman University, UAE in 2006. Joined RAK College of Dental Science in
2008 as Associate Professor and contributed massively in its foundation and was the dean in charge between
2010 and 2011.
Questions
Presence of which of the following bacteria in a water sample suggests an oral source?
qa.
qb.
qc.
qd.
Staphylococcus;
Leifsonia;
Pseudomonas aeruginosa;
A and C.
The most commonly present bacteria in the main water source, distilled water source and
dental units’ water line tubes was:
qa.
qb.
qc.
qd.
Leifsonia;
Sphingomonas paucimobilis;
Ralstonia spp.;
A, B and C above.
Samples from which of the following sources met the CDC recommendations for non-surgical
dental water which have a heterotrophic count of ≤500 CFU/ml?
qa.
qb.
qc.
qd.
Main Water Source samples;
Distilled water source;
Both A and B;
None of the samples.
Which of the following statements is CORRECT?
qa.
qb.
qc.
qd.
132
Non-bottled units contained significantly higher numbers of CFU compared to bottled units;
Bottled units contained significantly higher numbers of CFU compared to non-bottled units;
The difference in bacterial count between bottled and non-bottled units was not statistically significant;
None of the statements is correct.
Stoma Edu J. 2017;4(2): 126-132
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