| Abstract | U slučaju većeg nedostatka tvrdih zubnih tkiva, uporaba vlaknima ojačanih intrakanalnih kolčića omogućava adhezivno vezivanje na tvrda zubna tkiva i nadogradnju, dobra fizičko-mehanička svojstva i estetiku završnog rada. U ovom je prikazu slučaja kod pacijentice, nakon primjene lokalne anestezije, uklonjena metal-keramička kruna sa zuba te je izrađena privremena kruna. U idućoj posjeti, gumenom plahticom izoliran je zub nakon čega je uklonjena metalna nadogradnja. Revizija postojećeg punjenja provedena je strojnom tehnikom instrumentacije (Reciproc, VDW, München, Njemačka). Nakon tjedan dana, Gates Glidden svrdlom uklonjene su 2/3 punjenja iz korijenskog kanala. Korijenski je kanal ispran fiziološkom otopinom i posušen papirnatim štapićima nakon čega je izrađen individualni intrakanalni kolčić (everStick POST, 1.2, GC, Tokio, Japan) koji odgovara obliku preparacije u korijenskom kanalu. Intrakanalni je kolčić cementiran i koronarni je dio zuba nadograđen kompozitnim materijalom za cementiranje i izradu nadogradnje (Gradia Core GC, Tokio, Japan) uz polimerizaciju polimerizacijskom lampom. Potom je zub izbrušen, uzeti su otisci te je izrađena i, nakon probe, cementirana cirkonska kruna.
U opisanom prikazu slučaja, kod pacijentice je zamijenjena metalna nadogradnja i metal-keramička kruna s lošom estetikom na gornjem desnom središnjem sjekutiću. Nakon uklanjanja metalne nadogradnje i revizije punjenja, izrađen je individualni kolčić ojačan vlaknima, ne samo u svrhu poboljšanja estetike, nego i zbog svojih dobrih fizičko-mehaničkih svojstava. Izradom individualnog kolčića ojačanog vlaknima, korijenski je dentin ostao sačuvan te je kolčić adhezivno vezan na stijenke dentina i na koronarnu nadogradnju što omogućuje stvaranje monobloka i ravnomjernu raspodjelu sila na preostala tvrda zubna tkiva. |
| Abstract (english) | In case of evidental loss of clinical crown, the use of fiber reinforced intracanal posts enables adhesive bonding to hard dental tissues and core build up, good physico-mechanical properties and aesthetics. In this case report, after the application of local anesthesia, the metal-ceramic crown was removed and a temporary crown wasfabricated. During the next visit, the tooth was isolated with a rubber dam, after which the metal post was removed. Retreatment of the existing rooth canal filling was performed using rotary endodontic instruments (Reciproc, VDW, Munich, Germany). After one week, two thirds of the rooth canal filling were removed using Gates Glidden drill. The root canal was rinsed using saline and then dried with paper points, followed by fabrication of individually formed intracanal post (everStick POST, 1.2, GC, Tokyo, Japan),corresponding to the form of preparation in the root canal. The intracanal post was cemented and the core build up was done using Gradia Core (GC, Tokyo, Japan), followed by polymerisation with a polymerisation lamp. Afterwards, the tooth preparation for the crown was performed and, after taking jaw impressions, a zirconia crown was fabricated and cemented.
In the case report presented, metal post and the metal-ceramic crown of the upper right central incisor due to poor aesthetic were replaced. After the removal of metal post and retreatment of root canal filling, an individually formed fiber reinforced post was fabricated not only because of aesthetics but also due to its good physico-mechanical properties. By fabricating an individually formed fiber reinforced post, the root dentin was preserved and the post was adhesively bonded to the dentin walls and to the core build up, forming a monoblock with equal distribution of forces to the remaining hard dental tissue. |
