Aim : To investigate the number and. patterns of. root canals. of mandibular. first. molars.. Methods.: Descriptive observational study to investigate the canal morphology using clearing technique. The duration of the study was one year from 1st February 2020 to 1st February 2021.Non purposive sampling technique was used and 200 mandibular first molar were collected. Data collected was analysed using the SPSS Vr 10. Study variables include Number and pattern of the roots in mandibular teeth. Descriptive statistics were used; frequencies of the root canals and their canal pattern were calculated. Results: In the mesial root, 14 teeth had a one root canal,186 possessed double root canals were observed. Distal root of 160 teeth possessed one canal, 40 teeth possessed two root canals with type 1 pattern mostly observed. Conclusion: Like other populations Pakistani population may have a diverse root canal system in the mandibular molars that ultimately affect endodontic therapy. Keywords: Roots, canals, anatomy, tooth clearing technique, demineralization
Aim. The study aimed to evaluate the root and canal system in maxillary 1st premolar teeth in our patients using cone-beam computed tomography in subpopulation of Pakistan in Lahore. Material & methods. This retrospective study in vivo assessed Cone Beam Computed Tomography (CBCT) imaginings of maxillary 1st premolars from February 2017 to January 2019. This study determined the number of roots, canals and root canal conformation as described by Vertucci’s classification. Results. 150 subjects aged 17-75 years were enrolled with 90 females and 60 males. From 200 1st maxillary pre-molars, 75% of the teeth had two roots. 21% had one root. 4% had three roots. 94% teeth had two canals. Three canals were detected in 4% teeth. One canal in 2% teeth. Regarding canal configuration, type I canal in 72% cases and type V canal in 13% of cases. Conclusion. The Cone-beam computed tomography system is par excellence diagnostic modality than radiographic diagnosis providing improved and exact knowledge of root and canal variations plus configuration. Keywords: CBCT, Maxillary premolars, Endodontic treatment, Vertucci’s classification, root canal.
Aim: To evaluate the histological pulp response to three direct pulp capping agents (Propolis, Mineral Trioxide Aggregate and Calcium Enriched Mixture) in primary molars. Study design: Comparative study Place and duration of study: Pediatric Dentistry department and Oral Pathology department at de’Montmorency College of Dentistry, Lahore from 1st May 2016 to 31st December 2016. Methodology: Fifty-seven human vital primary first molars were selected from patients aged 8 years. They were divided into three groups of nineteen each. Propolis, mineral trioxide aggregate (MTA) and calcium enriched mixture (CEM) were used as direct pulp capping (DPC) agents in primary molars. After pinpoint exposure, the teeth were directly pulp capped with above mentioned materials. Teeth were extracted after fifteen days for histological examination of inflammatory pulpal cell response. Results: In Propolis group (15 days duration), 15 teeth (78.9%) were in grade 1inflammation, 1 tooth (5%) was in grade 2 inflammation and 3 teeth (15.7%) were in grade 3 inflammation. In Mineral Trioxide Aggregate group 14 teeth (73.7%) were in grade 1 inflammation, 3 teeth (15.7%) were in grade 2 inflammation and 2 teeth (10.5%) were in grade 3 inflammation. In Calcium Enriched Mixture group 15 teeth (78.9%) were in grade 1 inflammation, 3 teeth (15.7%) were in grade 2 inflammation and 1 tooth (5.3%) were in grade 3 inflammation. Conclusion: The effects of Propolis, Mineral Trioxide Aggregate (MTA) and Calcium Enriched Mixture (CEM) on pulpal tissue are comparable to each other. Propolis is a cheaper material as compared to other direct pulp capping agents and easily available. Therefore, it may be used as an alternative pulp capping agent however, further investigation is required to analyze human pulpal response. Keywords: Direct pulp capping. Propolis, Mineral trioxide aggregate, Calcium enriched mixture, Primary molars
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