Top mark on the mesial edge of mandibular central incisor
of the forth quadrant and the bottom mark on the anterior attachment of the lingual frenum.
On the other hand, a study examined 230 male subjects and found little variation between tooth diameter of subjects with and without crowding.8 Determining the causal factors that contribute to the development of lower incisor
crowding in the mixed dentition is essential.
The initial displacement was the largest in the incisal edge of lateral incisors
compared with the canine central incisors
The procedure followed for estimating age from incisor
Selection of tooth for grinding: the permanent first incisor
tooth from mandible was selected mainly because of the ease of obtaining it from the mandible and of having only one root in comparison to more than one in premolars and molars.
Reviewing Table 1 revealed that there was a significantly high difference between the genders for most of the measurements except the width of maxillary laterals and mandibular left central incisor
. This difference is in the agreement with previous findings indicating significantly wider teeth in males (18, 19).
The mandibular symphysis proportions, ratio of i3 to i1, length of premolar row, hypoconulid with two anterior lobes, thick incisor
and canine processes assess the studied specimen to Hex.
Methods: The study group comprised of 26 extruded immature maxillary incisors
in 25 trauma patients.
 As with the Holdaway VTO, the upper incisor
is positioned after the soft tissue has been constructed.
U1 to SN plane angle: It is the inferior inside angle formed between the long axis of the upper incisor
and Sella-nasion plane.
In the present case, availability of tooth fragment with satisfactory surface area and size indicated fragment reattachment technique for maxillary left lateral incisor
Conclusion: The study concluded that the most frequent cause was fall and right central incisor
and Elis's II classification were the most common amongst traumatic dental injuries.