GROSS ANATOMY OF DENTAL ROOT: EXPERIMENTAL STUDY Bernardi S., (1) , Fantozzi G.,(2) Donnini F.,(2) Nardi G.M.,(3) Leuter C.,(4) Continenza M.A. (1) (1) Health Sciences Department, University of L'Aquila, (2) Private Practitioner, (3) Odontostomatological Sciences Department, "La Sapienza" University of Rome, (4) Internal Medicine and Public Health Department, University of L'Aquila e-mail address: mariaadelaide.continenza@cc.univaq.it Introduction: Aim of this study is to investigate the external gross anatomy of dental root. A review of dental literature, in fact, can easily show that the morphology of the root apparatus was investigated in the past only from the inner side with a reach descriptions about the pulp chamber for the related endodontic reasons. Materials and methods: In order to be admitted into the study, the teeth had to be undamaged, as at the cement-enamel junction as at the root apex. Each tooth was identified by a serial number and measured by a millimetered tape (to obtain the root length around all the root sides), a protractor (to obtain the root angle), and a millimeter gauge (to measure the root diameter) in three defined points along the root axis. The common root trunk, that is the distance from the cervical line up to the root separation, has been measured and classified as short (<4mm), medium (>4-<5mm) and long (>5mm) trunk. Also, the obtained data have been statistical elaborated to underline the ranges of variations of the radicular surface along the different sides of the same root for each tooth. At the end of the morphological analisys, 12 parameters for each single-root tooth, and 24 parameters for the bi or thee-roots teeth were collected and statistically analysed. Results: The study highlighted significant differences from the literature data (p<0.01) only in two dental elements of the maxillary arch (central incisor and canine) and also in two dental elements of the mandibular arch (central incisor and first molar). In all these cases, the significant differences may be due to the winding course of the cervical line in these teeth. Summary tables for each considered parameter was obtained for all class of teeth, but a comparison with the literature data was possible only for the "root length" parameter. Conclusions: This study can be considered very innovative, because it fills an ancient hole in the odontostomatological literature about the external root morphology and its frequent variations, also statistically evaluated for all measured parameters besides that of the "root length". Nevertheless, even about this more classic parameter some statistically significant details has been pointed out, such as its remarkable different length when measured around the various surfaces of the same root. Then an important knowledge gap was filled to ameliorate the clinical practice for all dental operators.

Gross anatomy of dental root: experimental study

S. BERNARDI;LEUTER, CINZIA;CONTINENZA, Maria Adelaide
2010-01-01

Abstract

GROSS ANATOMY OF DENTAL ROOT: EXPERIMENTAL STUDY Bernardi S., (1) , Fantozzi G.,(2) Donnini F.,(2) Nardi G.M.,(3) Leuter C.,(4) Continenza M.A. (1) (1) Health Sciences Department, University of L'Aquila, (2) Private Practitioner, (3) Odontostomatological Sciences Department, "La Sapienza" University of Rome, (4) Internal Medicine and Public Health Department, University of L'Aquila e-mail address: mariaadelaide.continenza@cc.univaq.it Introduction: Aim of this study is to investigate the external gross anatomy of dental root. A review of dental literature, in fact, can easily show that the morphology of the root apparatus was investigated in the past only from the inner side with a reach descriptions about the pulp chamber for the related endodontic reasons. Materials and methods: In order to be admitted into the study, the teeth had to be undamaged, as at the cement-enamel junction as at the root apex. Each tooth was identified by a serial number and measured by a millimetered tape (to obtain the root length around all the root sides), a protractor (to obtain the root angle), and a millimeter gauge (to measure the root diameter) in three defined points along the root axis. The common root trunk, that is the distance from the cervical line up to the root separation, has been measured and classified as short (<4mm), medium (>4-<5mm) and long (>5mm) trunk. Also, the obtained data have been statistical elaborated to underline the ranges of variations of the radicular surface along the different sides of the same root for each tooth. At the end of the morphological analisys, 12 parameters for each single-root tooth, and 24 parameters for the bi or thee-roots teeth were collected and statistically analysed. Results: The study highlighted significant differences from the literature data (p<0.01) only in two dental elements of the maxillary arch (central incisor and canine) and also in two dental elements of the mandibular arch (central incisor and first molar). In all these cases, the significant differences may be due to the winding course of the cervical line in these teeth. Summary tables for each considered parameter was obtained for all class of teeth, but a comparison with the literature data was possible only for the "root length" parameter. Conclusions: This study can be considered very innovative, because it fills an ancient hole in the odontostomatological literature about the external root morphology and its frequent variations, also statistically evaluated for all measured parameters besides that of the "root length". Nevertheless, even about this more classic parameter some statistically significant details has been pointed out, such as its remarkable different length when measured around the various surfaces of the same root. Then an important knowledge gap was filled to ameliorate the clinical practice for all dental operators.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11697/30532
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