Objective: To find out the frequency of cusp of Carabelli and its association with dental caries in maxillary permanent first molars in both male and female patients of Peshawar. Study Design: Cross Sectional Study. Setting: OPD of Peshawar Dental Hospital, Peshawar. Period: July 2016 to December 2016. Material & Methods: A total of 300 patients (125 males and 175 females) were selected through consecutive sampling technique and the number of teeth examined was 600 (two teeth per patient). Age group selected for the patients was from 13 to 30 years. Both the genders having fully erupted maxillary permanent first molars on both sides of the jaw were included in the study and the teeth were examined usin0g mouth mirror while the presence of caries in Carabelli groove was checked with the help of dental explorer (probe). Results: Of the total 300 patients, 118 (39.3%) presented the cusp of Carabelli on maxillary permanent first molars and the number of teeth having the cusp was 192 (32%) out of the total 600 among them. 24.7% of the patients had cusp present on both right and left MPFM while 10.3% of patients had CC present only on right maxillary molars and in 4.3% of patients, it was located on left molars. Gender differentiation of the cusp did not show a statistically significant difference (p-value 0.140). The frequency of caries associated with the cusp of Carabelli groove was found to be 17.7%. Out these patients, 8 males (34.7%) and 15 females (65.2%) were affected. P value for this distribution was 0.651, which shows no statistically significant difference between genders for the presence of caries. Conclusion: The cusp of Carabelli is a common finding on the palatal surface of mesiolingual cusp of maxillary permanent first molars in a hospital-based population of Peshawar with no statistically significant difference between males and females. Caries in cusp of Carabelli groove is a common association with the cusp having no significant difference between genders.
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: 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.
Objectives: To determine the frequency of second mesiobuccal canal (MB2) in a sample of 223 extracted maxillary permanent 1st molars. Study Design: In-vitro Cross-sectional study. Setting: Department of Endodontic at Peshawar Dental Hospital. Period: June 2019-Nov 2019. Material & Methods: The samples were processed with application of the Clearing Technique which includes demineralization with nitric acid, dehydration with ethanol and clearing with methyl salicylate. The samples were classified according to Weine’s system of root canal classification. Results: Among the 223 samples, 30% were found to have Weine’s type1 root canal in the mesiobuccal root (second mesiobuccal canal absent). Second mesiobuccal canal was present in majority of the samples (70%) with Weines type2 (2-1) predominant with 23.32%, Weines type3 (2-2) present in 15.7% and Weines type 4 (1-2) present in 21% of the samples. 9% of the samples could not fit into Weines classification so they were placed in Vertuccis classification for root canal system type 6 (2-1-2). Conclusion: The present study concludes that the second mesiobuccal canal is more frequently found in maxillary permanent 1st molar teeth than our textbooks report, irrespective of quadrant and gender. Therefore, time should be given to evaluation of its anatomy by the clinician before starting the root canal treatment for the greater good of the community.
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