Plenty of studies have been published on permanent mandibular first molar
root canal anatomy among various population groups using CBCT.21,22 In local literature, so far only two studies have been published on root canal morphology of these teeth.10,11 However, none of the studies used CBCT as an assessment tool.
However, it is reported that there are different number of cusps and their degree of expression differs in dentition of different ethnic groups.3-5 It has been reported that in mandibular molars the buccal accessory cusps are very rare and existence of an oblique ridge even more rare in mandibular molars.6,7 Another study done on Australian natives has reported that maxillary first molar
which forms early showed less variations than the cusps of maxillary second molar.8
On the right side, one of the mini-screws was inserted between the first molar
and second premolar, whereas on the left side it was inserted between the premolars (Figure 2).
A line was drawn starting from the distal contact of the first upper molar extending anteriorly along the free gingival margin up to the distal contact of first opposite side first molar
and back to the starting point in a straight line, thus making a closed loop.
conducted a study to evaluate the mesiodistal root inclination of permanent incisors, canines, and first molar
of Brazilian children with mixed dentition, using the horizontal reference line drawn on a panoramic radiograph.
Images were taken using the New Tom VGi (QR SRL Co., Verona, Italy) using the following inclusion criteria: Age 18 years or older, bilateral presence of mandibular first and second premolar, and first molar
teeth, absence of any pathology, gross malalignment, asymmetry, and fracture in the ROI.
In an urgent motion filed before the court's Third Division, Reyes said she had been experiencing "acute pain" in her upper right first molar
Using X-rays to examine the teeth's internal structure revealed that the first molar
, which typically sprouts through the gums at around age 6 in kids today, had erupted a few months before death.
One study showed that the mandibular first molar
is the tooth with a greater requirement for endodontic treatment (4).
In this article, a case of hemisection is presented as a treatment option for a tooth where only the mesial root of a mandibular first molar
Sealant application was identified using the D1351 code and was counted as a first molar
sealant when reported with tooth number 3, 14, 19, or 30.
Since only approximately 28% of the population has an MSA nerve to innervate the mesiobuccal root of the maxillary first molar
, the second molar was selected as the test tooth to be studied.