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To compare the skeletal stability of rigid versus semirigid fixation for advancement genioplasty by the assessment of vertical and horizontal measurements preoperatively and post-operatively on lateral cephalometric radiographs. The study comprised of patients who underwent standard advancement genioplasty by inferior osteotomy of the chin with broadest musculoperiosteal pedicle with either rigid fixation or wire fixation. The displacements of vertical and horizontal measurements resulting following surgery was derived by calculating the difference between preoperative, immediate post-operative and 1 year post-operatively on lateral cephalometric radiographs. Preoperative measurements were marked as T1, immediate post-operative as T2, 1 year follow up post-operative as T3. In the semirigid group a mean horizontal advancement of 5.97 mm was accompanied by a relapse of 1.623 mm during a period of minimum 1 year. The mean superior repositioning of menton was 0.7 mm. This was accompanied by a relapse of 0.325 mm during a period of 1 year. In the rigid group a mean horizontal advancement of 4.815 mm was accompanied by a relapse of 0.2 mm during a period of 1 year. The mean superior repositioning of menton was 0.975 mm. This was accompanied by a relapse of 0.1 mm during a period of 1 year. This study confirms the findings of several previous studies that contribute data specific towards the use of rigid fixation in advancement genioplasty. In our study we also observed that, in cases where large advancements are necessary, wire fixation may offer insufficient means of fixation particularly if the movement is complex and asymmetrical, in which case rigid fixation devices are more helpful.

Aim: The rate of healing of periapical lesion after the antibacterial dressing with triple antibiotic paste and calcium hydroxide was assessed. Materials and Methods: Case reports which used triple antibiotic paste and calcium hydroxide as the intracanal dressing was searched in PubMed, Google Scholar and Cochrane Oral Health's Trials Register up to August 2020, without language and period restriction. Two authors independently reviewed all identified titles and abstracts for eligibility. Tables were generated to summarize the included studies. Results: Sixteen ( n = 16) articles met the eligibility criteria. Nonsurgical endodontic treatment was carried out in eleven cases with triple antibiotic paste and in nineteen cases calcium hydroxide was used. Results of the study after analyzing the case reports indicate that both triple antibiotic paste and calcium hydroxide are equally effective as intracanal medicament. In cases where calcium hydroxide failed to eliminate symptoms, triple antibiotic paste was found to be effective. Conclusion: As far as the effect on the healing of the periapical lesions is concerned, all the studies showed a high success rate. Available scientific data indicates nonsurgical treatment can be adopted as a routine measure to conservatively treat large periapical lesions of endodontic origin.

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Background: Various techniques have been employed to enhance the root canal disinfection rate using sodium hypochlorite (NaOCl) as an irrigant. Photon initiated photo-acoustic streaming using lasers is a newer method of endodontic disinfection. Aim: The aim of this study is to evaluate and compare the efficacy of photo-initiated photoacoustic streaming and conventional irrigation technique using 2.5% NaOCl for root canal disinfection in primary teeth. Setting and Design: Laboratory setting and ex-vivo design. Materials and Methods: Twenty extracted primary teeth were selected in which Enterococcus faecalis incubation was done in the root canals and bacterial counts were obtained before the intervention. The teeth were randomly allocated into two groups. Group I samples were irrigated with conventional syringe method using 2.5% NaOCl and Group II samples were irrigated using photon-initiated photo-acoustic streaming method with erbium-doped yttrium aluminum garnet laser (wavelength - 2940 nm). Postintervention samples were obtained, and bacterial colony count was done. Wilcoxon Signed- Ranks Test and Mann–Whitney test were applied to test the intragroup and intergroup differences in the bacterial counts. Results: Postintervention results showed no bacterial growth in the canals irrigated using Laser ( P = 0.004) whereas, fewer bacterial colonies were observed in NaOCl group ( P = 0.005). There was statistically significantly higher reduction in E. faecalis counts in Laser Activated irrigation (LAI) group compared to NaOCl group ( P < 0.05). Conclusion: Total elimination of E. faecalis counts was obtained by the use of laser activated NaOCl irrigation in the infected root canals, hence, it can be considered as an effective method for pediatric endodontic disinfection.