Postendodontic restoration of severely decayed primary tooth using modified omega loop as a post.

The esthetic concern of severely mutilated primary anterior teeth in the case of early childhood caries has been a challenge to pediatric dentist. Early childhood caries is the most common chronic disease of the preschool child. The case report presented here is of a three year old boy with severely decayed maxillary anterior teeth. After root canal treatment, the primary maxillary central incisors were reinforced using modified omega post and followed by using celluloid strip crowns. The technique described here offers a simple and effective method for restoring severely decayed primary anterior teeth that reestablishes shape, function, and esthetics.

Assessment of microbial contamination on twice a day used toothbrush head after 1-month and 3 months: An in vitro study.

PURPOSE: The purpose of vitro study was to assessment of the bacterial contamination on daily twice-used toothbrushes in different conditions after 1-month and 3 months. MATERIALS AND METHODS: Forty children aged between 6 and 12 years were selected for this study. Toothbrushes and toothpaste were distributed among those children. Among those children, 20 children brushed their teeth for 1-month and 20 brushed their teeth for 3 months twice a day. Among those, 10 were kept in same brush box with a family member and 10 were kept in separate brush box after the use. Toothbrush from every child was recollected to investigate the contamination of microorganisms. Head of the toothbrushes transferred to a tube containing 10 ml of tryptone soy broth. This was followed by vortex mixing for 1 min to dislodge suspected adherent bacteria. The bacterial suspension was serially diluted to obtain dilution factors of up to 10(-3). 1 ml each of the dilution factors was obtained using a sterile pipette and plated on plate count agar. Petri dishes containing agar media were incubated and examined using a compound microscope. RESULTS: There was high mean difference between 1-month and 3 months, twice a day used toothbrush those kept with family members and those kept separate. CONCLUSIONS: Toothbrush should keep in a separate box. Moreover, toothbrush should to be change after 3-4 weeks.

An in vitro Evaluation of Microleakage of Posterior Teeth Restored with Amalgam, Composite and Zirconomer - A Stereomicroscopic Study.

BACKGROUND: Numerous restorative materials are being used in dentistry to achieve adequate strength and restore aesthetics. However, a perfect ideal restorative material has still eluded dentist. Dental amalgam is versatile material with self-sealing property, but is unaesthetic. Other restorative materials like, composites require conservative preparation, but exhibits polymerisation shrinkage resulting in microleakage. To overcome these drawbacks a high strength restorative material reinforced with ceramic and zirconia fillers known as zirconomer has been introduced. The aim of this study was to evaluate the micro-leakage of these three different restorative materials. MATERIALS AND METHODS: Thirty non-carious human permanent first and second molars were utilized in this study. Class I cavities were prepared on the occlusal surface; cavities were then restored with amalgam, composite and zirconomer as per manufacture's instruction. All samples were stored for 24 hours in distilled water followed by thermocycling. The entire tooth surface was painted with two coats of varnish to within 1mm of the restoration margins. The teeth were immersed in dye. Teeth were sectioned and observed under stereomicroscope. RESULTS: In this study the zirconomer exhibited the highest micro leakage as compared to composite and amalgam but composite having higher micro leakage as compared to amalgam and lower micro leakage as compared to zirconomer. CONCLUSION: Even though composite and amalgam are being marketed aggressively and new material like zirconomer are on origin, amalgam still proves to be one of the best materials.