Knowledge and awareness regarding uses of extracted natural tooth in clinical practice

Restoration of aesthetics is one the major patients’ concern in dentistry which may be disrupted due to tooth-loss secondary to trauma, or as part of orthodontic treatment or periodontal problem. A number of treatment options are available for the replacement of teeth, but they may be expensive, and time-consuming, involving artificial teeth. For immediate tooth replacement, patient’s own intentionally extracted or unintentionally avulsed tooth maybe used. The current narrative review was planned to discuss various techniques for the use of natural tooth pontic, which preserves the original contours, size and colour of the replaced tooth. Before using these teeth in a prosthesis, they need to be thoroughly disinfected and stored in appropriate medium according to the global guidelines. This reversible option would boost patient’s confidence, preserve natural tooth anatomy and improve patient’s acceptanc

Comparison of surface defects in Protaper Next and Hyflex EDM files after single clinical use: A stereoscopic evaluation

Objective: To compare the surface defects created on the ProTaper Next files versus HyFlex Electrical Discharge Machining files after single clinical use in molars.Methods: The cross-sectional study was conducted in the dental department of the Aga Khan University Hospital, Karachi, from December 2018 to June 2019, and comprised Nickel-Titanium files belonging to HyFlex Electrical Discharge Machining and ProTaper Next to perform complete root canal treatment of molar teeth. The files were first visually examined and then analysed under 25.6x magnification using a stereomicroscope for the evaluation of surface defects. A photographic record was maintained and studied. Data was analysed using SPSS 23.0.Results: Of the 114 files, 38(33.3%) each were ProTaper Next X1, ProTaper Next X2 and HyFlex Electrical Discharge Machining. The number of files showing defects under microscopic evaluation were 17(14.9%). Deformation of the cutting edge was the most frequently seen defect type, found in 9(7.9%) files. The frequency of fractured files was 4(3.5%). The odds of microscopic defects in HyFlex Electrical Discharge Machining files was 2.64 times that of ProTaper Next files.Conclusion: Even after single clinical use, HyFlex Electrical Discharge Machining files were more likely to get microscopic defects on their surface compared to ProTaper files

Cone Beam Computed Tomography based evaluation of position of mental foramen and its relation to apices of mandibular posterior teeth in a sample of Pakistani population

Objective: To radiographically determine the mental foramen position, its distance to the nearest apex and the prevalence of anterior loop of mandibular nerve using cone-beam computed tomography scans. Method: The cross-sectional study was conducted at the Aga Khan University Hospital, Karachi, from January to June 2020, and comprised cone-beam computed tomography scans of males or females of Pakistani origin aged 15-65 years with intact mandibular dentition and fully formed roots with matured apex. The scans were analysed to determine the horizontal position of mental foramen and to classify it according to the Tebo and Telford classification. The vertical distance from mental foramen to the nearest tooth apex was measured and the mandibular nerve configuration was determined. Data was analysed using SPSS 23. Results: Among the 96 scans, the most frequent location of mental foramen MF was along the long axis of 2nd premolars for both right 50(52.1%) and left 49(51%) sides, followed by between 1st and 2nd premolars for both right 28(29.2%) and left 38(39.6%) sides. The mean minimum distance from mental foramen to the nearest root apex was 3.75±2.59mm and 3.99±2.26mm on right and left sides, respectively. There was bilateral symmetry on both sides. The most frequent mandibular nerve configuration on the right 69(72.6%) and left 75(78.1%) sides, with anterior loop being the least common; right side 3(3.2%) and 5(5.2%) left side. Conclusion: The most common position of mental foramen was along the long axis of 2nd premolars while the anterior loop was the least common. Key Words: CBCT, Mental foramen, Mandibular teeth, Pakistani population, Tebo and Telford classification, Mandibular nerve

Surgical and prosthodontics management of a perforating giant radicular cyst in anterior maxilla: a case report

Abstract Radicular cyst is the most common type of odontogenic cyst associated with the apex of non-vital teeth. The lining of the radicular cyst usually arises from the epithelial rests of Malassez. These cyst usually persists even after the elimination of microbial load from the root canals. Surgical removal is deemed necessary for the management. For larger lesions extending to the facial or palatal cortical plates, additional regenerative procedures such as bone grafting along with collagen membrane are warranted. This case report describes the surgical and prosthetic management of a giant radicular cyst that was perforating the cortical plates in the anterior maxilla. Key words: cysts, radicular cyst; bone grafting, esthetic management, regeneration

Comparison of surface defects in Protaper Next and Hyflex EDM files after single clinical use – A stereoscopic evaluation

Objective: To compare the surface defects created on the ProTaper Next files versus Hyflex EDM files after single clinical use in molars. Methods: One hundred and fourteen Nickel-Titanium files belonging to two contemporary systems, HyFlex EDM and ProTaper Next, were used to perform complete root canal treatment of a molar tooth. The files were first visually examined and then analyzed under 25.6x magnification using a stereomicroscope for evaluation of surface defects. A photographic record was maintained and studied. Descriptive statistics were calculated for frequency of defects. Chi-square test was used to check the association between file and defect type. Odd’s ratio was calculated to check the strength of association between file type and microscopic presence of defects. Results: Frequency of files showing defects was 14.9%. Deformation of the cutting edge was the most frequently seen defect type, found in 7.9% files. The frequency of fractured files was 3.5%. The odds of microscopic defects in HyFlex EDM is 2.64 times that of ProTaper Next. Conclusion: Even after single clinical use, HyFlex EDM files are more likely to get microscopic defects on their surface compared to ProTaper files. Continuous..