Endodontic Morphology of Permanent Teeth

Uspješnost liječenja zubne pulpe uvjetovana je dobrim poznavanjem endodontskoga prostora i njegovih raznolikosti. Najčešći uzrok neuspjeha jest što se ne nađu korijenski kanali, jedan ili više njih, ili pak njihove anatomske osobitosti. Premda svi zubi imaju više-manje određenu građu endodonta, ipak terapeut mora biti spreman i na moguće varijacije. Najrjeđe varijabilnosti u građi endodontskoga prostora pokazuju gornji sjekutići i očnjak. Oni gotovo u 100% slučajeva imaju jedan korijen i korijenski kanal, a u praksi je zabilježeno tek nekoliko slučajeva gornjih sjekutića sa dva korijena ili korijenska kanala. Donji sjekutići i očnjaci najčešće imaju korijen i korijenski kanal, no moguće ih je naći dva, pa čak i tri. Pretkutnjaci i kutnjaci često variraju u građi endodontskoga prostora. Stomatolog mora biti spreman na postojanje dvaju ili triju korijenskih kanala kod pretkutnjaka, te čak četiriju, pet ili više korijenskih kanala kod kutnjaka. Raspored kanala također može biti vrlo raznolik, pa tako u bilo kojem od korijena tih zuba može postojati više korijenskih kanala. Osobitost u građi gornjih i donjih kutnjaka jest da je moguć i tzv. C- -oblik endodonta, a nastaje kao posljedica sraštanja korijena tih zuba. Primjeri iz prakse danomice potvrđuju vrlo složenu morfologiju endodontskoga prostora zuba i zato stomatolog mora biti spreman na te raznolikosti kako bi postigao što bolji uspjeh u endodontskoj terapiji.The prerequisite for successful treatment of dental pulp is a good knowledge of endodontic space and its diversities. The most common reason of not succeeding is failing to notice one or more root canals or their anatomic particularities. Maxillary incisors and canines show least variability in the structure of endodontic morphology. In almost 100% of cases they have one root and one root canal, and in practice only a few cases of maxillary incisors with two roots or root canals have been noted. In mandibular incisors and canine, along with the most often incidence of one, the incidence of two and even three roots and root canals is possible. Premolars and molars often vary in the structure of their endodontic morphology. The stomatologist must be prepared for the existence of two or even three root canals in the premolar and even four, five or more roots canals in the molar. The configuration of canals can also vary a lot and there may exist more roots canals in any of the root of these teeth. The particularity in the structure of maxillary and mandibular molars is the possible occurrence of the socalled C-shaped canals which result as a consequence of the growing into one of the roots in these teeth. Examples from daily practice demonstrate the very complex endodontic morphology of teeth and, therefore, the stomatologist must be prepared for these diversities, in order to achieve the best possible endodontic treatment