Journal of endodontics
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Journal of endodontics · May 2013
Randomized Controlled Trial Comparative StudyA prospective, randomized, double-blind comparison of the injection pain and anesthetic onset of 2% lidocaine with 1:100,000 epinephrine buffered with 5% and 10% sodium bicarbonate in maxillary infiltrations.
Local anesthetics can be buffered to a physiological pH before injection to decrease the time of onset and reduce injection pain. ⋯ Two percent lidocaine with 1:100,000 epinephrine buffered with 5% or 10% sodium bicarbonate did not differ from nonbuffered solutions in anesthetic onset or injection pain in maxillary infiltrations of canines with healthy pulps.
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Journal of endodontics · May 2013
Second canal in mesiobuccal root of maxillary molars is correlated with root third and patient age: a cone-beam computed tomographic study.
There is little evidence supporting the use of cone-beam computed tomographic (CBCT) scanning in root canal anatomy investigation. This study aimed to investigate the presence of second mesiobuccal canals (MB2) in different thirds of the mesiobuccal root of first and second maxillary molars using CBCT scanning and to correlate findings with patient sex and age. ⋯ The prevalence of MB2 canals decreases as the root canal approaches the apical third and as age increases. No association with sex was observed. CBCT scanning proved effective in mapping MB2 canals present in different thirds of the root.