The Effect of Chlorhexidine on Bacterial Contamination of Hall Technique Elastomeric Orthodontic Separators and Gingival Health: A Pilot Study

ABSTRACT Objective: To study the effect of chlorhexidine on elastomeric orthodontic separators (EOS) bacterial-colonisation and gingival-health in Hall technique (HT) patients. Material and Methods: Prospective in-vivo pilot clinical study of EOS bacterial colonisation and primary-molar gingival health assessment in 20 patients (mean age 5.45±1.27 years) requiring bilateral HT crowns (40 teeth). One side received 1-minute 0.12% chlorhexidine-soaked-EOSs (Chx-EOSs), and the other side dry-EOSs (NoChx-EOSs). The EOSs were removed five-days later and underwent a bacterial enumeration technique. Plaque (PI) and Gingival (GI) indices were assessed pre-, five-days and three-months post-treatment. Wilcoxon-Signed-Rank/McNemar-Chi-square statistics were used (p<0.05). Results: Baseline unused/packaged EOSs' sterility check yielded zero colony-forming-units (CFU) per millilitre, but 100% of the used EOSs became colonised by oral-microorganisms. An overall trend of lower mean CFU count in Chx-EOSs (3.415± 0.78 x105 CFU/ml) compared to NoChx-EOSs (6.157±1.48 x105 CFU/ml) was observed (p=0.009). Both NoChx-EOSs and Chx-EOSs insertion sites showed evidence of gingivitis with no difference between PI and GI indices by site over time. Conclusion: There was a lower trend of bacterial colonization in chlorhexidine treated EOSs and an occurrence of gingivitis pre/post HT-treatment regardless of EOS type. The lack of difference in the gingival health may be inconclusive due to this pilot's low power suggesting the need for robust large scale studies.

Emergency Management of Traumatic Dental Injuries: Knowledge of Dubai School Nurses

Abstract Objective: To assess the knowledge of school nurses in Dubai, United Arab Emirates, about the emergency management of Traumatic Dental Injuries (TDIs) at schools. Material and Methods: A cross-sectional questionnaire survey was conducted amongst 68 school nurses (SN) prior to inviting them to an educational workshop on the emergency management of TDIs. The educational workshop covered all the topics in the questionnaire and provided basic necessary information to the SN regarding the emergency management of TDIs. Descriptive statistics were used to describe the characteristics of the sample; the Kolmogorov-Smirnov test was used to test normality for the score of knowledge and Mann-Whitney U test to correlate score of knowledge with different demographical variables (p<0.05) Results: An overall lack of knowledge about the emergency management of TDIs was observed. The overall average for the score of knowledge for all the participants was 10.75 out of a total of 16 correct answers. Female participants had significantly higher scores of knowledge compared to males (p=0.02). None of the other demographic variables were significantly associated with the score of knowledge Conclusion: More training programs are essential for school nurses to improve their knowledge and awareness for better future handling of traumatic dental injuries.

Referral Patterns of Pediatric Oral Surgery Cases: A Pilot Survey of United Arab Emirate Dentists

Objective: To assess the referral patterns of General Dental Practitioners (GDPs) and Pediatric Dentists (PDs) when faced with a range of Pediatric-Oral Surgery (POS) cases. Material and Methods: Eighty-two dentists treating children [51.2% GDPs (n=42) and 48.8% PDs (n=40)] were shown clinical photographs or radiographs of twelve common POS cases. Opinions on whether to "manage it yourself", "refer to a/another pediatric dentist", "refer to an oral surgeon (OS)", "refer to a multidisciplinary clinic (MDC)", or "do nothing" were sought. Statistical analysis was carried out using SPSS software with Chi-square test (p≤0.05). Results: Both GDPs and PDs reported significantly higher referrals to OS of: 1) lower lip mucoceles (50%, 52.5% respectively), 2) exposure of impacted maxillary canine (64%, 51.3%) and 3) dento-alveolar trauma cases (73.8%, 65%). A majority of GDPs and PDs reported self-managing of: 1) removal of multiple deciduous carious teeth (81%, 97.5%), 2) odontogenic infections with facial swelling (57.1%, 92.5%), 3) removal of ankylosed submerged primary molars (66.7%, 95%) and 4) dental trauma (71.4%, 100%). PDs reported self-managing primary herpetic gingivostomatitis (PHGS, 95%) compared to 45.2% of GDPs. GDP referral of PHGS to the PDs was 42.9%. There were no significant differences between both groups regarding removal of a mesiodens, release of a tongue-tie, a labial frenectomy, or a lip laceration, but the majority would refer to oral surgeons in these cases. Conclusion: Whilst United Arab Emirates dentists sampled referred some pediatric-oral surgery cases to oral surgeons, general dental practitioners were reluctant to refer pediatric-oral surgery cases to pediatric dentists, preferring to self-manage them.