Aim of this study was to investigate the gross anatomy of the root of European anterior teeth. A review of the dental literature shows that in the past the root morphology was investigated from the inner pulp chamber for endodontic therapies. In order to be admitted to the study, the teeth had to be undamaged. Each tooth was identified by a serial number and gauged by a millimeter tape (for the root length), a goniometer (for the root angle), and a millimeter gauge (for the root diameter). Furthermore, a statistical elaboration of the data was performed to underline the shape variations of the surface around the different sides of the root. At the end of the analysis, 12 parameters for each single-root tooth were described. The study highlights significant differences (p<0.01) only in two teeth of the maxillary arch (central incisor and canine) and in one tooth of the mandibular arch (central incisor). In both cases, the observed differences may be due to the sinuosity of the cement-enamel line. The Tables for each measured param- eter were obtained for all examined classes of teeth, but a comparison with literature data was possible only for the “root length” parameter. This study can be considered innovative for the absence, in the scientific literature, of a statistical analysis of all parameters with the exception of the “root length”. Moreover, it gives a detailed updating of the data relative to the European population creating a useful tool as well for surgical interventions during periodontal therapy (for example in the choice of the right ultrasonic handpiece) as for new CAD/CAM assisted implant manufacturing techniques.
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