Introduction: Porphyromonas gingivalis is one among the major etiological agent in periodontal diseases and has been proved to cause gingival inflammation under orthodontic appliances. Aim: To assess the effect of amine fluoride and probiotic mouthwashes on levels of P. gingivalis during orthodontic treatment, using real time-polymerase chain reaction (RT-PCR). Materials and Methods: A randomised controlled trial was performed including 45 patients. There were three groups: Group A (control group), Group B (patients using Amflor mouthwash) and Group C (patients using probiotic mouthwash). During the treatment, all the 3 groups were advised to brush twice a day using Colgate tooth paste and Group B patients were advised to swish 15 ml fluoridated mouthwash (Amflor) and Group C advised to swish probiotic for 60 s before swallowing, once in the morning and once before sleep. After gently removing supragingival plaque, subgingival plaque samples were collected by inserting a sterile dental curette into the bottom of the gingival crevice around 31, 32, 41, and 42 at two different intervals: T1 at start and T2 after 6 months of fixed orthodontic treatment. Sub-gingival plaque samples collected were transferred to laboratory within 48 h for RT-PCR analysis in Tris-buffer solution, to maintain the integrity of bacterial DNA. Results: The levels of P. gingivalis were significantly decreased with probiotic mouth wash. Conclusions: Probiotic mouth wash can be used as an adjunctive measure along with regular brushing to improve periodontal status during fixed orthodontic treatment.

No abstract

No abstract

Aim:The aim of this study was to design and introduce a retainer that overcomes the common shortcomings seen in other retainers. Materials and methods:Hard thermoplastic sheet of 0.5 mm thickness is vacuum or pressure-molded onto the patient cast. Lingual portion of the retainer is trimmed according to the contours of the anterior teeth. Contact points between the maxillary and mandibular anterior teeth are marked on the retainer and reduced. Punch cut holes are placed on the retainer for the exit of flash and air bubbles while fixation. The retainer is bonded onto the lingual surface of the anterior teeth using composite.Results: A 1-month review of the retainer showed no patient discomfort, occlusal interference, or bond failure. The aim of the article was found to have been achieved. Conclusion:Initial evaluation has shown positive findings. Long-term clinical findings will determine the overall success of this new retainer.Clinical significance: As compared with other retainers, thermoplastic retainer has shown reduced tendency to debond from occlusal forces, decreased patient discomfort, and occlusal interference.