Marium Iqbal, Asmat Jameel, Amynah Charania.
Locating MB2 Canal in Maxillary First Molars with Magnification: In Vitro Study Molars: Six Months Study.
J Pak Dent Assoc Jan ;21(1):28-30.

OBJECTIVE: To determine the ability of locating the second mesiobuccal canals in maxillary first molars with magnification (dental loupes 3.5x) METHODOLOGY: a Cross sectional study. 300 freshly extractedmaxillary firstmolarswere stored in 1% thymol solution for 1 week. Rhomboidal access cavities were prepared in these teeth and chamber cleared to look for canals first with naked eye and then with dental loupes (x3.5). If MB2 was detected two periapical radiographswere exposed with files inMB andMB2 canals. The data was analyzed using chi squared test on SPSS version 10. RESULTS: In 77 out of 300 extracted teethMB2 canalwas locatedwith naked eye andwith the use of dental loupes the number of located canals increased to 265. There was a statistically significant difference between the two methods of identification of MB2 canals (p value <0.005) CONCLUSION: Use of magnification increases the number of MB2 canals located in maxillary first molars compared to those locatedwith naked eye examination alone in vitro.

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