Predictable endodontic and periodontic failures as a result of radicular anomalies

El Surco Palato Radicular: Su relación con patología pulpar y/o periodontal

“…La presencia de un área radiolúcida en forma de lágrima debe hacer sospechar la existencia de esta anomalía aunque no existan manifestaciones periodontales, tanto en casos de problema pulpar inicial como en aquellos en los que se hubiera producido fracaso endodóntico (18).En este último caso la existencia de una apertura cameral previa o incluso de una obturación podrían dificultar el diagnóstico a la exploración. A veces, cuando el surco es lo suficientemente profundo, se pude visualizar radiográficamente en forma de una línea negra que recorre la raiz, dando una imagen similar a la que produce la fractura vertical radicular con la que habrá que realizar diagnósti-co diferencial (17).…”

The palato-gingival groove - anatomical anomaly occurred in maxillary lateral incisors: case reports

“…Ennes and Lara suggested that the palatal groove could be the result of an alteration of genetic mechanisms 4) . The anomaly has been termed the radicular anomaly 3) , distolingual groove 5) , radicular lingual groove 6) , palatoradicular groove 7) , radicular groove 8) and cinguloradicular groove 9) . As the name implies, this malformation is actually a groove, which starts near the cingulum of the tooth and runs towards the cementoenamel junction in an apical direction at various depths and distances along the root surface.…”

“…The formation of palatogingival groove is probably caused by infolding of the enamel organ and the epithelial sheath of Hertwig during odontogenesis 2) and has been speculated to be an aborted formation of an additional root 3) . Ennes and Lara suggested that the palatal groove could be the result of an alteration of genetic mechanisms 4) .…”

Conservative management of a periradicular lesion associated with a palatogingival groove

“…[10] Although the exact etiology of PGGs remains unclear, alteration of genetic mechanisms, enfolding of the enamel organ and Hertwig's epithelial root sheath, and the effort required to form another root are considered as causal elements of PGG. [1,6,8,11] Gu [11] classified PGGs into three types according to the degree of severity based on microcomputed tomography studies: In type I, the groove is short (not beyond the coronal third of the root); in type II, the groove is long (beyond the coronal third of the root) but shallow, corresponding to a normal or simple root canal; in type III, the groove is long (beyond the coronal third of the root) and deep, corresponding to a complex root canal system. PGGs are clinically significant because they allow bacterial plaque and calculus to accumulate, thereby aiding…”

“…This malformation is known by different names, including the radicular groove, [3] a palatal groove, [4] a radicular lingual groove, [5] a disto-lingual groove, [6] a vertical developmental radicular groove, [5] a cinguloradicular groove, [7] a developmental radicular anomaly, [8] an interruption groove, [9] and a coronoradicular groove. [10] Although the exact etiology of PGGs remains unclear, alteration of genetic mechanisms, enfolding of the enamel organ and Hertwig's epithelial root sheath, and the effort required to form another root are considered as causal elements of PGG.…”