Efficacy of antiseptics for rubber dam sterilization prior to endodontic treatment.

PURPOSE: This study investigated the efficacy of various antiseptics for disinfection of rubber dams used during endodontic treatment, the duration of disinfection effectiveness, and the disinfection protocol employed by dental schools in Thailand. METHODS: The efficacy of 10% povidone-iodine, 1.5% tincture iodine and 70% ethyl alcohol in eliminating Enterococcus faecalis (E. faecalis) and Candida albicans (C. albicans) on the rubber dam was investigated. Time duration of disinfection was evaluated at 0, 30, 60, and 120 min. The two-step disinfection method adopted at Thai dental school was examined. Independent t-test or Kruskal-Wallis followed by a Dunnett's test was used for statistical analysis. RESULTS: Among the three antiseptics, 10% povidone and 1.5% tincture iodine eradicated the microorganisms completely, whereas 70% ethyl alcohol did not achieve a statistically significant decrease. The duration of sterilization effectiveness was 120 min for 10% povidone-iodine, but bacteria were eliminated only at 0 min by 1.5% tincture iodine. The results also indicated that the two-step protocol scarcely eliminated the microorganisms. CONCLUSION: The best antiseptic for rubber dam disinfection is 10% povidone-iodine, which remains effective for 120 min. The two-step protocol typically practiced in Thai dental schools needs to be updated. The use of 10% povidone-iodine alone is adequate for complete eradication of E. faecalis and C. albicans.

Risk Factors of Dental Caries in the Thai Population: The Retrospective Cohort Study.

Aim: The aim of this retrospective cohort study was to determine the risk factors associated with the occurrence of dental caries increments in Thai dental patients. Materials and Methods: The dental chart records of 500 patients who visited the Department of Advanced General Dentistry, Mahidol University during 2003-2013 were included in this research. Risk factors such as age, gender, medical history, marital status, routine oral checkup, oral appliance usage, initial and final records of decayed (DT)-missing-filled (DMF-T), dental history of tooth extraction due to caries, xerostomia, presence of visible plaque, presence of interproximal restoration, and caries risk level were retrieved from dental records. Cox proportional hazard regression model was used to determine the association of caries risk factors and new dental caries increments. Results: The results indicated that the rate of incidence of new dental caries was 2.1 per 100 person-month. In the multivariate hazard model, past caries experience in more than three teeth (adjusted hazard ratio: 2.29, 95%CI: 1.53-3.44) and xerostomia (adjusted hazard ratio: 4.47, 95%CI: 1.82-10.98) were independent risk factors of dental caries increments. Other factors, such as demographic data, physical factors, clinical factors, and other contributing factors, were not associated with the incidence of new dental caries. Conclusion: The presence of past caries experience and xerostomia were predictors of the occurrence of new dental caries.

Scanning electron microscope analysis of working ends of standard and modified Gracey curettes.

Context: Gracey curettes are the most frequently used manual instruments in periodontal treatments. Aim: This study aimed to evaluate morphology of working ends of standard and modified Gracey curettes no. 1-2. Materials and Methods: Using scanning electron microscopy, four batches of unused standard curettes from seven manufacturers and modified curettes from 6 manufacturers were investigated for blade length, blade width, blade thickness, toe morphology, surface roughness, and cutting-edge morphology. Results: Working ends of the standard Gracey curettes were longer than the modified ones, with mean lengths of 5.65 ± 0.68 and 4.42 ± 0.82 mm, respectively. However, both standard and modified Gracey curettes had comparable widths and thicknesses, with the mean width of 0.86 mm and the mean thickness of 0.71 mm. Most samples had acceptably symmetrical toes, except those from three manufacturers which had unacceptable toes with angulations. Moreover, only two manufacturers produced curettes with smooth blades on all their surfaces. In addition, sharp or functional wire edges were seen in cutting edges of curettes from three manufacturers. Conclusions: Working ends of standard and modified Gracey curettes could have different morphological features if they were from different manufacturers or different batches. It is suggested that dentists or dental hygienists make a purchase decision based on their knowledge on morphology of a good curette in relation to its intended use in dental practice, rather than their familiarity or the curette's price. Furthermore, the curette needs to be examined using a widely available magnifying device when possible.

The Impact of Contemplative Practice in Dental Education: A Qualitative Study in General Dentistry.

Aim: This study explored perceptions of dental postgraduates regarding the impact of contemplative practice in a patient care aspect. Materials and Methods: The qualitative research approach using semi-structured interview was employed. Postgraduate students from the General Dentistry Residency Training Program were selected by purposive sampling by considering sex and working experience. The retrieved data were transcribed using a verbatim technique and analyzed using framework analysis. Results: There were 12 students participating in this research. The retrieved data were analyzed and categorized into two main themes, which were mindfulness and humanized patient-centered care paradigm. Mindfulness can be categorized into four subthemes to represent its required skills, including concentration, deep listening, emotional regulation, as well as critical thinking and problem-solving skill. There were six subthemes for humanized patient-centered care paradigm, which were understanding in patients' context, development of individualized comprehensive treatment planning, treatment with humanization and compassion, management with phycological integrated care, rapport establishment with patients, and good attitudes toward special care needs patients. These skills are considered necessary for patient-centered dental practice, which could be expected from the learning process through contemplative practice. Conclusion: This research supports the implementation of contemplative practice in dental education, as the data demonstrated the positive impact of contemplative practice in both personal and professional perspectives. These included the cultivation of mindfulness and other relevant skills, which were required for humanized patient-centered care in dental practice.

Attitude of Physicians towards Periodontal Disease and Diabetes Mellitus Screening in Dental Clinics in Thailand.

BACKGROUND: Diabetes mellitus (DM) is one of the top causes of death in many places of the world. Diagnosing DM in the early stage is necessary to avoid severe cases and death. OBJECTIVES: To evaluate the knowledge of association between DM and periodontal disease (PD) among Thai physicians and assess their attitudes towards DM screening in dental clinics in Thailand. METHODS: Online survey of currently practicing physicians in Thailand was conducted on voluntary basis using the newly developed questionnaire. RESULT: We received 403 responses that are statistically sufficient to represent the entire population of currently practicing physicians in Thailand. A total of 97.3% of all responses indicate that Thai physicians have knowledge about the association between DM and PD. More than 90% know that DM has an effect on PD; however, 70% know about the effect of untreated PD in DM patients. Most of physicians think that DM screening in dental clinics is important (79.1%) and are ready to accept referred cases for definite DM diagnosis from a dentist (84.1%). The concerned issues among the participants were the accuracy of the test results in DM screening (73%) and ability of a dentist to perform the screening (71.5%). CONCLUSIONS: The majority of participating physicians have adequate knowledge about the bidirectional relationship between DM and PD. They have a positive attitude towards DM screening in dental setting. The collaboration between physicians and dental professionals should be established to reduce the number of undiagnosed DM patients and enhance the medical care of DM patients.