width/length ratios of unworn and worn maxillary teeth in white subjects.
The root canal system is divided into two parts: the pulp chamber, located in the anatomic crown
of the tooth, and the root canal, found in the anatomic root of the tooth.6
The maximum mesiodistal width (perpendicular to the longitudinal axis of the tooth) and the maximum crown-root length, (parallel to the longitudinal axis of the tooth and between the most apical point of the gingival margin and the most incisal point of the anatomic crown
) of the maxillary central incisors, lateral incisors, and canines was recorded for each tooth.
width/ length ratios of unworn and worn maxillary teeth in white subjects.
In these situations lip line, gingi- val line and anatomic crown
length are important factors for esthetic results.8 A high smile line can be an obstacle to achieving an esthetic outcome.
In experimental groups (C, Z and T) the anatomic crowns
of the teeth were sectioned perpendicular to the long axis, and the root canals were prepared for the posts.