Objectives The objectives were to measure fluoride release and assess the antimicrobial behavior of fluoride-doped nano bioactive glass (F-nBG) and nano zinc oxide (ZnO)-enriched novel dentifrices. Materials and Methods Experimental dentifrices were synthesized by incorporating ZnO nanoparticles and F-nBG (1.5 wt% and 4 wt%) as active ingredients. The fluoride release behavior of suspensions and elutes of samples were analyzed by ion selective electrode. Antimicrobial activity and minimum bactericidal concentration against Streptococcus mutans and Lactobacillus casei were evaluated. Microbial stability against contamination was also assessed by a challenge test. Results The fluoride release behavior of experimental dentifrices was higher than that of commercial dentifrices and was dependent on filler loading. The fluoride release was more from suspensions than elutes. Zones of inhibition (ZOIs) and minimum bactericidal concentration values for novel dentifrices showed direct proportionality with filler loading, and effectiveness was exhibited against both strains. Experimental dentifrices exhibited effective antibacterial potential, which could possibly be due to release of sufficient fluoride and zinc ions in aqueous media from F-nBG and ZnO present in their formulations. Conclusion Combination of F-nBG and ZnO may provide a multi-benefit approach for simultaneously treating early white spot lesions, reducing bacterial growth, and providing core plaque control.
Objective: To assess the attitude of resident and consultant Prosthodontists towards clinical decision-making in complete denture prosthodontics Study Design: A cross-sectional study. Place and Duration of Study: Armed Forces Institute of Dentistry, Rawalpindi, from Nov 2019 to Jan 2020. Methodology: Fifty trainee and consultant prosthodontists from all over the country were included in the study. A questionnaire consisting of 10 questions aimed at assessing the approach towards clinical decision-making in complete denture prosthodontics was circulated among the study subjects using Google Forms. Data was analyzed using SPSS version 24. Results: Around 20 (40%) prosthodontists regarded patient’s personal values and preferences to be “very important” in clinical decision-making in contrast to their own values. Most of the clinicians 47 (94%) believed their patients were quite satisfied with them and around 31 (62%) prosthodontists believed that “choice of the best treatment results from negotiation between patients and clinicians after they have shared technical information as well as their values and preferences about the options”. No significant difference was observed in choice of response between males and females or between prosthodontists with varying clinical experience for any of the questions asked (p>0.05). Conclusion: Prosthodontists participating in the present study demonstrated a positive attitude towards shared decisionmaking in complete denture prosthodontics. No differences were observed between males and females in terms of attitude towards shared decision-making practices.
BACKGROUND & OBJECTIVE: Missed root/canal is one of the main causes of endodontic failure. Permanent mandibular canine is considered to be a single rooted tooth. The complex pattern of root canal system poses difficulty in the root canal treatment and the prognosis becomes uncertain if the debridement and obturation of the root canals is not satisfactory therefore our objective of the study is to assess frequency of two roots in permanent mandibular canine of Pakistani population using CBCT scan. METHODOLOGY: A descriptive; retrospective study was planned by using Cone Beam Computerized Tomography (CBCT) images of the past 02 year, i.e. December 2017 till November 2018. Images were assessed for the number of roots in permanent mandibular canines using software NNTVIEWER NewTOM. Data was entered and analyzed using SPSS 21. RESULTS: 134 permanent mandibular canines of 67 patients were studied. 64.2% of the images were of male patients while 35.8% were of females. Mean age of the patients was 48.12 ± 15.92 years. 7 (5.22%) out of 134 canines had two roots. 4 patients (5.97%) had canines with 2 roots of which 3 patients (4.48%) had bilateral two-rooted canines and 1 patient (1.49%) had unilateral two-rooted canines. Frequency of two roots in mandibular canines had no association with gender (p= 0.127). CONCLUSION: All mandibular permanent canines were single rooted but 5.2% of the permanent mandibular canines had two roots.
Objectives: To assess the concepts of complete denture occlusion among dental fraternity. Study Design And Setting: Cross-sectional study conducted at various dental hospitals and institutes of Karachi, for a period of six months, from 1st June’2019 to 30th November’2019 Methodology: Total 849 dental practitioners who are currently practising were included. A well-structured and validated questionnaire was used for data collection. SPSS version 25 was used. Results: Bilateral balanced occlusion was an ideal occlusion by majority subjects i.e, 530(62.4%) in patients with wellformed ridges, followed by 464(54.7%) candidates with skeletal class 1, total 376(44.3%) chose it with uncontrolled diabetes mellitus, 365(43%) in single complete denture cases, 339(39.9%) with increased inter-arch space, 298(35.1%) with parafunction habits, 296(34.9%) in patients with history of neuromuscular disorder and 271(31.9%) where a complete denture opposes a removable partial denture. Furthermore, Lingualized occlusion was preferred by 341(40.25%) participants for patients with skeletal class 3. Total 316(37.2%) candidates chose it for patients with displaceable supporting tissue followed by 264(31.1%) who chose it for skeletal 2 and 260(30.6%) for cases of highly resorbed ridges. Lastly, 311(36.6%) chose canine guided occlusion with highly resorbed ridges accompanied by high aesthetic demand A significant difference between education level and knowledge of occlusal schemes was also found. Chi-square (73.87), df 6, p-value =0.000. Conclusion: Dental practitioners lack adequate knowledge of occlusal schemes in terms of prescription in complete denture patients. A significant difference between the education level and knowledge of occlusal schemes was found. Therefore, awareness of various occlusal schemes should be increased at undergraduate level.
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