Background and Aim: The curve of Spee (COS) is a physiological entity in human dentition. A functional masticatory system necessitates an appropriate occlusal curvature. The primary objective of this investigation was to assess the skeletal and dental parameters in individuals with variation in the depth of curve of Spee. Materials and Methods: A total of 276 patients with pre-treatment lateral cephalograms and dental cast models were investigated in the Orthodontics and Dentofacial Orthopedics Unit of a Tertiary Care Hospital of Mardan, Pakistan from January 2021 to December 2022. Patients with no prior history of orthopedic treatment for functional jaw, prosthodontic treatment, no prior history of cleft lip and palate and cranio-facial disorders were enrolled. Ethical approval was obtained and all the patients were categorized into three groups based on the depth of curve of Spee (COS): Group-I (flat curvature < 2 mm), Group-II (normal curvature 2-3 mm), and Group-III (deep curvature > 3 mm). Lateral cephalometric analysiswas done to measure the four angular and four linear parameters. Molar relation, overbite, COS depth, and overjet were measured based on the occlusal classification. SPSS version 27 was used for data analysis.
OBJECTIVE: To find out number of roots, root-canals and canal configuration in permanent mandibular third molars through tooth clearing technique. METHODS: In this cross-sectional study, 193 extracted human mandibular permanent third molars with completely formed apical foramen and intact roots were collected from both genders treated at dental hospitals in Peshawar, Pakistan from 1st July to 31st December 2019. After collection teeth were visually inspected to count number of roots, followed by access cavity preparation, pulp extirpation and canal staining with black Indian ink. Decalcification was done by placing teeth in nitric acid for 5 days followed by dehydration in ascending concentrations of alcohol. Complete transparency was achieved by immersing teeth in methyl-salicylate for 72 hours. Transparent teeth were inspected again for number of roots and root-canals. RESULTS: Among 193 extracted mandibular third molars, (n=161; 83.4%) had two-roots and (n=24; 12.4%) were single-rooted. Two-canals were present in vast majority (n=142; 73.6%) whereas three and one-canal were seen in (n=37; 19.2%) and (n=13; 6.7%) teeth respectively. Most common type of root canal pattern was Vertucci’s Type-I in mesial-roots (n=79; 63.7%) and distal-roots (n=120; 96.8%). Vertucci’s Type-II and Type-IV were (n=15; 12.1%) and (n=12; 9.7%) in the mesial-roots respectively. Mandibular third molars didn’t present with any configurations that didn’t fullfill Vertucci’s criteria. Correlation between number of roots and root-canals of mandibular third molars was non-significant. CONCLUSION: Two-roots and two-canals were common patterns for mandibular third molars. Mesial and distal roots were predominant in Type-I followed by Type-II and Type-IV Vertucci’s classification.
Background: Third molars have root canal structure that is frequently incredibly complicated and highly varied. Greater heterogeneity in root patterns and canal shape has been linked to mandibular third molars. Aim: To assess the root and canal anatomy of mandibular third molar in the people of Peshawar using cone beam computed tomography. Study Design: Retrospective study. Place and Duration of Study: Khyber College of Dentistry and Rehman College of Dentistry, from 1st December 2020 to 31st January 2022. Methodology: One hundred and ninety five CBCT scans of third mandibular molars were examined and the data in regards to their root number, canal number, Vertucci’s classification, gender and age relation of morphology in mandibular third molars was statistically assessed. Results: Greater number of 3rdmandibular molars had two roots (89.7%) and two canals (67.7%). Most mesial roots had Vertucci Type I (61%), distal root had type I canals as well (92.8%) Conclusion: The current study concluded that mandibular third molars showed great variation in Root canal configuration. Majority had two roots and two canals per root. Keywords: Canal configuration, Vertucci’s classification, Mandibular third molars, Cone beam computed tomography (CBCT)
Background: Knowledge of tooth morphology is obligatory for achieving success in dental treatment. The root canal configuration of maxillary first premolar (MFP) has been shown to be highly varying. The study was conducted to assess the canal configurations in the roots of upper first premolars within a sample population of Peshawar with the help of tooth cross-sectioning method. Methods: The extracted 250 maxillary first premolars had undergone access cavity preparation after cleaning and pulp was removed from each individual tooth. The root canals were located in the pulp chamber floor and then India ink was injected in to their orifices. When the canals get stained the roots were cross-sectioned at three levels to assess the configurations of root canals using a categorization method devised by Weine. SPSS version 19 was used to analyze the data. A p-value of less than 0.05 was considered statistically significant. Results: Among 250 maxillary first premolars, the common root canal configuration was Weine's type-IV in 30.4% and type-III in 30.0% teeth. Weine's type-I and type-II were observed in 24.8% and 8.8% premolars, respectively. Variable root canal configurations were seen in 6.0% teeth. Apical delta was found in 1 (0.4%) tooth. A highly statistically significant difference was observed when root canal configuration was compared with external root morphology. Conclusion: Weine's type-IV and type-III root canal configurations were frequently observed in maxillary first bicuspids.
Objectives: To document the frequency and grading of supernumerary cusps in permanent teeth in patients visiting Peshawar Dental College and Khyber College of Dentistry Peshawar.Methods and materials: A cross sectional study was carried out in which 753 patients attending the outdoor patients department who fulfi lled the inclusion criteria were examined, out of which 229 (Males: 122, Females: 107) were recruited for participation in the study through consecutive sampling technique. Age group selected for the study was from 13 to 50 years. The patients were examined 4 days a week until the required sample size was accomplished. Permanent maxillary first molars and permanent maxillary incisors (central, lateral) were studied for the presence of cusp of Carabelli and Talon cusp respectively, while mandibular second premolars were examined for central cusp. Data were analyzed using SPSS version 20 and statistical analysis was done using Chi-square test.Results: The overall frequency of supernumerary cusps was calculated to be 30.4% out of which cusp of Carabelli was29.1% and Talon cusp was 1.33%. Gender-wise distribution was significant at p<0.05. In the present study, grade III (overlapped tubercle) showed the highest degree of expression of cusp of Carabelli and type 3 Talon cusp was prevalent in our local population.Conclusion: Amongst the reported frequency of supernumerary cusps, cusp of Carabelli occurrence was higher in our local population with a signifi cant diff erence seen among genders. Central cusp was not seen in any of the subjects. There was higher incidence of cusp of Carabelli in male patients compared to Talon cusp which was more frequently present in females.
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